Antarctic Cryosphere Access Portal (A-CAP)
The National Snow and Ice Data Center (NSIDC) Antarctic Cryosphere Access Portal (A-CAP) is a map server that provides data and information pertinent to the frozen regions of the Antarctic ice sheet and the Southern Ocean, including monthly climatologies of sea ice extent and concentration, ice sheet elevation and accumulation, satellite imagery, and more. In addition to providing map images and source data through Open Geospatial Consortium, Inc. (OGC) protocols--Web Map Service (WMS), Web Feature Service (WFS), and Web Coverage Service (WCS)--a dynamic Web interface for exploring these data is also available at http://nsidc.org/agdc/acap/. If you have questions, comments or suggestions, please contact NSIDC User Services at +1.303.492.6199 or nsidc@nsidc.org.
Antarctica
Cryosphere
Earth Science
Glacial Landforms/Processes
Ice Sheets
Oceans
Polar
Sea Ice
Sea Ice Concentration
Snow/Ice
Snow Cover
Snow Water Equivalent
Southern Hemisphere
OGC WCS
1.1.1
none
none
National Snow and Ice Data Center
NSIDC User Services
User Services
+1 303.492.6199
+1 303.492.2468
CIRES, 449 UCB, University of Colorado
Boulder
CO
80309-0449
USA
nsidc@nsidc.org
Our hours of operation are 9:00 A.M. to 5:00 P.M., U.S. Mountain Time, Monday through Friday. We are closed on most major United States holidays.
None.
resourceProvider
WCS
1.1.1
WCS
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Stroeve, J. and W. Meier. 1999, updated 2008. Sea Ice Trends and Climatologies from SMMR and SSM/I. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/smmr_ssmi_ancillary/monthly_means.html. Accessed 27 June 2008. Compiled from: Cavalieri, D., C. Parkinson, P. Gloersen, and H. J. Zwally. 1996. Sea ice concentrations from Nimbus-7 SMMR and DMSP SSM/I passive microwave data. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/nsidc-0051.html. Background: Monthly climatologies of sea ice concentration represent mean ice concentration percentages for each month over the entire time period 1979-2007, which is generated from passive microwave brightness temperature data derived from Nimbus-7 Scanning Multichannel Microwave Radiometer (SMMR) and Defense Meteorological Satellite Program (DMSP) -F8, -F11 and -F13 Special Sensor Microwave/Imager (SSM/I) radiances at a grid cell size of 25 x 25 km using the NASA Team algorithm developed by the Oceans and Ice Branch, Laboratory for Hydrospheric Processes at NASA Goddard Space Flight Center (GSFC). A threshold of 15 percent concentration has been applied to the monthly climatologies.
Stroeve, J. and W. Meier. 1999, updated 2008. Sea Ice Trends and Climatologies from SMMR and SSM/I. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/smmr_ssmi_ancillary/monthly_means.html. Accessed 27 June 2008. Compiled from: Cavalieri, D., C. Parkinson, P. Gloersen, and H. J. Zwally. 1996. Sea ice concentrations from Nimbus-7 SMMR and DMSP SSM/I passive microwave data. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/nsidc-0051.html. Background: Monthly climatologies of sea ice concentration represent mean ice concentration percentages for each month over the entire time period 1979-2007, which is generated from passive microwave brightness temperature data derived from Nimbus-7 Scanning Multichannel Microwave Radiometer (SMMR) and Defense Meteorological Satellite Program (DMSP) -F8, -F11 and -F13 Special Sensor Microwave/Imager (SSM/I) radiances at a grid cell size of 25 x 25 km using the NASA Team algorithm developed by the Oceans and Ice Branch, Laboratory for Hydrospheric Processes at NASA Goddard Space Flight Center (GSFC). A threshold of 15 percent concentration has been applied to the monthly climatologies.
sea_ice_concentration_01
Antarctica
Cryosphere
Earth Science
Oceans
Polar
Sea Ice
Sea Ice Concentration
Southern Hemisphere
Southern Ocean
0 0
316 332
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Stroeve, J. and W. Meier. 1999, updated 2008. Sea Ice Trends and Climatologies from SMMR and SSM/I. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/smmr_ssmi_ancillary/monthly_means.html. Accessed 27 June 2008. Compiled from: Cavalieri, D., C. Parkinson, P. Gloersen, and H. J. Zwally. 1996. Sea ice concentrations from Nimbus-7 SMMR and DMSP SSM/I passive microwave data. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/nsidc-0051.html. Background: Monthly climatologies of sea ice concentration represent mean ice concentration percentages for each month over the entire time period 1979-2007, which is generated from passive microwave brightness temperature data derived from Nimbus-7 Scanning Multichannel Microwave Radiometer (SMMR) and Defense Meteorological Satellite Program (DMSP) -F8, -F11 and -F13 Special Sensor Microwave/Imager (SSM/I) radiances at a grid cell size of 25 x 25 km using the NASA Team algorithm developed by the Oceans and Ice Branch, Laboratory for Hydrospheric Processes at NASA Goddard Space Flight Center (GSFC). A threshold of 15 percent concentration has been applied to the monthly climatologies.
Stroeve, J. and W. Meier. 1999, updated 2008. Sea Ice Trends and Climatologies from SMMR and SSM/I. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/smmr_ssmi_ancillary/monthly_means.html. Accessed 27 June 2008. Compiled from: Cavalieri, D., C. Parkinson, P. Gloersen, and H. J. Zwally. 1996. Sea ice concentrations from Nimbus-7 SMMR and DMSP SSM/I passive microwave data. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/nsidc-0051.html. Background: Monthly climatologies of sea ice concentration represent mean ice concentration percentages for each month over the entire time period 1979-2007, which is generated from passive microwave brightness temperature data derived from Nimbus-7 Scanning Multichannel Microwave Radiometer (SMMR) and Defense Meteorological Satellite Program (DMSP) -F8, -F11 and -F13 Special Sensor Microwave/Imager (SSM/I) radiances at a grid cell size of 25 x 25 km using the NASA Team algorithm developed by the Oceans and Ice Branch, Laboratory for Hydrospheric Processes at NASA Goddard Space Flight Center (GSFC). A threshold of 15 percent concentration has been applied to the monthly climatologies.
sea_ice_concentration_02
Antarctica
Cryosphere
Earth Science
Oceans
Polar
Sea Ice
Sea Ice Concentration
Southern Hemisphere
Southern Ocean
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Stroeve, J. and W. Meier. 1999, updated 2008. Sea Ice Trends and Climatologies from SMMR and SSM/I. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/smmr_ssmi_ancillary/monthly_means.html. Accessed 27 June 2008. Compiled from: Cavalieri, D., C. Parkinson, P. Gloersen, and H. J. Zwally. 1996. Sea ice concentrations from Nimbus-7 SMMR and DMSP SSM/I passive microwave data. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/nsidc-0051.html. Background: Monthly climatologies of sea ice concentration represent mean ice concentration percentages for each month over the entire time period 1979-2007, which is generated from passive microwave brightness temperature data derived from Nimbus-7 Scanning Multichannel Microwave Radiometer (SMMR) and Defense Meteorological Satellite Program (DMSP) -F8, -F11 and -F13 Special Sensor Microwave/Imager (SSM/I) radiances at a grid cell size of 25 x 25 km using the NASA Team algorithm developed by the Oceans and Ice Branch, Laboratory for Hydrospheric Processes at NASA Goddard Space Flight Center (GSFC). A threshold of 15 percent concentration has been applied to the monthly climatologies.
Stroeve, J. and W. Meier. 1999, updated 2008. Sea Ice Trends and Climatologies from SMMR and SSM/I. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/smmr_ssmi_ancillary/monthly_means.html. Accessed 27 June 2008. Compiled from: Cavalieri, D., C. Parkinson, P. Gloersen, and H. J. Zwally. 1996. Sea ice concentrations from Nimbus-7 SMMR and DMSP SSM/I passive microwave data. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/nsidc-0051.html. Background: Monthly climatologies of sea ice concentration represent mean ice concentration percentages for each month over the entire time period 1979-2007, which is generated from passive microwave brightness temperature data derived from Nimbus-7 Scanning Multichannel Microwave Radiometer (SMMR) and Defense Meteorological Satellite Program (DMSP) -F8, -F11 and -F13 Special Sensor Microwave/Imager (SSM/I) radiances at a grid cell size of 25 x 25 km using the NASA Team algorithm developed by the Oceans and Ice Branch, Laboratory for Hydrospheric Processes at NASA Goddard Space Flight Center (GSFC). A threshold of 15 percent concentration has been applied to the monthly climatologies.
sea_ice_concentration_03
Antarctica
Cryosphere
Earth Science
Oceans
Polar
Sea Ice
Sea Ice Concentration
Southern Hemisphere
Southern Ocean
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Stroeve, J. and W. Meier. 1999, updated 2008. Sea Ice Trends and Climatologies from SMMR and SSM/I. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/smmr_ssmi_ancillary/monthly_means.html. Accessed 27 June 2008. Compiled from: Cavalieri, D., C. Parkinson, P. Gloersen, and H. J. Zwally. 1996. Sea ice concentrations from Nimbus-7 SMMR and DMSP SSM/I passive microwave data. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/nsidc-0051.html. Background: Monthly climatologies of sea ice concentration represent mean ice concentration percentages for each month over the entire time period 1979-2007, which is generated from passive microwave brightness temperature data derived from Nimbus-7 Scanning Multichannel Microwave Radiometer (SMMR) and Defense Meteorological Satellite Program (DMSP) -F8, -F11 and -F13 Special Sensor Microwave/Imager (SSM/I) radiances at a grid cell size of 25 x 25 km using the NASA Team algorithm developed by the Oceans and Ice Branch, Laboratory for Hydrospheric Processes at NASA Goddard Space Flight Center (GSFC). A threshold of 15 percent concentration has been app
lied to the monthly climatologies.
Stroeve, J. and W. Meier. 1999, updated 2008. Sea Ice Trends and Climatologies from SMMR and SSM/I. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/smmr_ssmi_ancillary/monthly_means.html. Accessed 27 June 2008. Compiled from: Cavalieri, D., C. Parkinson, P. Gloersen, and H. J. Zwally. 1996. Sea ice concentrations from Nimbus-7 SMMR and DMSP SSM/I passive microwave data. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/nsidc-0051.html. Background: Monthly climatologies of sea ice concentration represent mean ice concentration percentages for each month over the entire time period 1979-2007, which is generated from passive microwave brightness temperature data derived from Nimbus-7 Scanning Multichannel Microwave Radiometer (SMMR) and Defense Meteorological Satellite Program (DMSP) -F8, -F11 and -F13 Special Sensor Microwave/Imager (SSM/I) radiances at a grid cell size of 25 x 25 km using the NASA Team algorithm developed by the Oceans and Ice Branch, Laboratory for Hydrospheric Processes at NASA Goddard Space Flight Center (GSFC). A threshold of 15 percent concentration has been applied to the monthly climatologies.
sea_ice_concentration_04
Antarctica
Cryosphere
Earth Science
Oceans
Polar
Sea Ice
Sea Ice Concentration
Southern Hemisphere
Southern Ocean
0 0
316 332
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Stroeve, J. and W. Meier. 1999, updated 2008. Sea Ice Trends and Climatologies from SMMR and SSM/I. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/smmr_ssmi_ancillary/monthly_means.html. Accessed 27 June 2008. Compiled from: Cavalieri, D., C. Parkinson, P. Gloersen, and H. J. Zwally. 1996. Sea ice concentrations from Nimbus-7 SMMR and DMSP SSM/I passive microwave data. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/nsidc-0051.html. Background: Monthly climatologies of sea ice concentration represent mean ice concentration percentages for each month over the entire time period 1979-2007, which is generated from passive microwave brightness temperature data derived from Nimbus-7 Scanning Multichannel Microwave Radiometer (SMMR) and Defense Meteorological Satellite Program (DMSP) -F8, -F11 and -F13 Special Sensor Microwave/Imager (SSM/I) radiances at a grid cell size of 25 x 25 km using the NASA Team algorithm developed by the Oceans and Ice Branch, Laboratory for Hydrospheric Processes at NASA Goddard Space Flight Center (GSFC). A threshold of 15 percent concentration has been applied to the monthly climatologies.
Stroeve, J. and W. Meier. 1999, updated 2008. Sea Ice Trends and Climatologies from SMMR and SSM/I. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/smmr_ssmi_ancillary/monthly_means.html. Accessed 27 June 2008. Compiled from: Cavalieri, D., C. Parkinson, P. Gloersen, and H. J. Zwally. 1996. Sea ice concentrations from Nimbus-7 SMMR and DMSP SSM/I passive microwave data. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/nsidc-0051.html. Background: Monthly climatologies of sea ice concentration represent mean ice concentration percentages for each month over the entire time period 1979-2007, which is generated from passive microwave brightness temperature data derived from Nimbus-7 Scanning Multichannel Microwave Radiometer (SMMR) and Defense Meteorological Satellite Program (DMSP) -F8, -F11 and -F13 Special Sensor Microwave/Imager (SSM/I) radiances at a grid cell size of 25 x 25 km using the NASA Team algorithm developed by the Oceans and Ice Branch, Laboratory for Hydrospheric Processes at NASA Goddard Space Flight Center (GSFC). A threshold of 15 percent concentration has been applied to the monthly climatologies.
sea_ice_concentration_05
Antarctica
Cryosphere
Earth Science
Oceans
Polar
Sea Ice
Sea Ice Concentration
Southern Hemisphere
Southern Ocean
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Stroeve, J. and W. Meier. 1999, updated 2008. Sea Ice Trends and Climatologies from SMMR and SSM/I. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/smmr_ssmi_ancillary/monthly_means.html. Accessed 27 June 2008. Compiled from: Cavalieri, D., C. Parkinson, P. Gloersen, and H. J. Zwally. 1996. Sea ice concentrations from Nimbus-7 SMMR and DMSP SSM/I passive microwave data. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/nsidc-0051.html. Background: Monthly climatologies of sea ice concentration represent mean ice concentration percentages for each month over the entire time period 1979-2007, which is generated from passive microwave brightness temperature data derived from Nimbus-7 Scanning Multichannel Microwave Radiometer (SMMR) and Defense Meteorological Satellite Program (DMSP) -F8, -F11 and -F13 Special Sensor Microwave/Imager (SSM/I) radiances at a grid cell size of 25 x 25 km using the NASA Team algorithm developed by the Oceans and Ice Branch, Laboratory for Hydrospheric Processes at NASA Goddard Space Flight Center (GSFC). A threshold of 15 percent concentration has been applied to the monthly climatologies.
Stroeve, J. and W. Meier. 1999, updated 2008. Sea Ice Trends and Climatologies from SMMR and SSM/I. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/smmr_ssmi_ancillary/monthly_means.html. Accessed 27 June 2008. Compiled from: Cavalieri, D., C. Parkinson, P. Gloersen, and H. J. Zwally. 1996. Sea ice concentrations from Nimbus-7 SMMR and DMSP SSM/I passive microwave data. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/nsidc-0051.html. Background: Monthly climatologies of sea ice concentration represent mean ice concentration percentages for each month over the entire time period 1979-2007, which is generated from passive microwave brightness temperature data derived from Nimbus-7 Scanning Multichannel Microwave Radiometer (SMMR) and Defense Meteorological Satellite Program (DMSP) -F8, -F11 and -F13 Special Sensor Microwave/Imager (SSM/I) radiances at a grid cell size of 25 x 25 km using the NASA Team algorithm developed by the Oceans and Ice Branch, Laboratory for Hydrospheric Processes at NASA Goddard Space Flight Center (GSFC). A threshold of 15 percent concentration has been applied to the monthly climatologies.
sea_ice_concentration_06
Antarctica
Cryosphere
Earth Science
Oceans
Polar
Sea Ice
Sea Ice Concentration
Southern Hemisphere
Southern Ocean
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316 332
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Stroeve, J. and W. Meier. 1999, updated 2008. Sea Ice Trends and Climatologies from SMMR and SSM/I. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/smmr_ssmi_ancillary/monthly_means.html. Accessed 27 June 2008. Compiled from: Cavalieri, D., C. Parkinson, P. Gloersen, and H. J. Zwally. 1996. Sea ice concentrations from Nimbus-7 SMMR and DMSP SSM/I passive microwave data. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/nsidc-0051.html. Background: Monthly climatologies of sea ice concentration represent mean ice concentration percentages for each month over the entire time period 1979-2007, which is generated from passive microwave brightness temperature data derived from Nimbus-7 Scanning Multichannel Microwave Radiometer (SMMR) and Defense Meteorological Satellite Program (DMSP) -F8, -F11 and -F13 Special Sensor Microwave/Imager (SSM/I) radiances at a grid cell size of 25 x 25 km using the NASA Team algorithm developed by the Oceans and Ice Branch, Laboratory for Hydrospheric Processes at NASA Goddard Space Flight Center (GSFC). A threshold of 15 percent concentration has been applied to the monthly climatologies.
Stroeve, J. and W. Meier. 1999, updated 2008. Sea Ice Trends and Climatologies from SMMR and SSM/I. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/smmr_ssmi_ancillary/monthly_means.html. Accessed 27 June 2008. Compiled from: Cavalieri, D., C. Parkinson, P. Gloersen, and H. J. Zwally. 1996. Sea ice concentrations from Nimbus-7 SMMR and DMSP SSM/I passive microwave data. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/nsidc-0051.html. Background: Monthly climatologies of sea ice concentration represent mean ice concentration percentages for each month over the entire time period 1979-2007, which is generated from passive microwave brightness temperature data derived from Nimbus-7 Scanning Multichannel Microwave Radiometer (SMMR) and Defense Meteorological Satellite Program (DMSP) -F8, -F11 and -F13 Special Sensor Microwave/Imager (SSM/I) radiances at a grid cell size of 25 x 25 km using the NASA Team algorithm developed by the Oceans and Ice Branch, Laboratory for Hydrospheric Processes at NASA Goddard Space Flight Center (GSFC). A threshold of 15 percent concentration has been applied to the monthly climatologies.
sea_ice_concentration_07
Antarctica
Cryosphere
Earth Science
Oceans
Polar
Sea Ice
Sea Ice Concentration
Southern Hemisphere
Southern Ocean
0 0
316 332
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urn:ogc:def:crs:EPSG::32761
Stroeve, J. and W. Meier. 1999, updated 2008. Sea Ice Trends and Climatologies from SMMR and SSM/I. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/smmr_ssmi_ancillary/monthly_means.html. Accessed 27 June 2008. Compiled from: Cavalieri, D., C. Parkinson, P. Gloersen, and H. J. Zwally. 1996. Sea ice concentrations from Nimbus-7 SMMR and DMSP SSM/I passive microwave data. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/nsidc-0051.html. Background: Monthly climatologies of sea ice concentration represent mean ice concentration percentages for each month over the entire time period 1979-2007, which is generated from passive microwave brightness temperature data derived from Nimbus-7 Scanning Multichannel Microwave Radiometer (SMMR) and Defense Meteorological Satellite Program (DMSP) -F8, -F11 and -F13 Special Sensor Microwave/Imager (SSM/I) radiances at a grid cell size of 25 x 25 km using the NASA Team algorithm developed by the Oceans and Ice Branch, Laboratory for Hydrospheric Processes at NASA Goddard Space Flight Center (GSFC). A threshold of 15 percent concentration has been applied to the monthly climatologies.
Stroeve, J. and W. Meier. 1999, updated 2008. Sea Ice Trends and Climatologies from SMMR and SSM/I. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/smmr_ssmi_ancillary/monthly_means.html. Accessed 27 June 2008. Compiled from: Cavalieri, D., C. Parkinson, P. Gloersen, and H. J. Zwally. 1996. Sea ice concentrations from Nimbus-7 SMMR and DMSP SSM/I passive microwave data. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/nsidc-0051.html. Background: Monthly climatologies of sea ice concentration represent mean ice concentration percentages for each month over the entire time period 1979-2007, which is generated from passive microwave brightness temperature data derived from Nimbus-7 Scanning Multichannel Microwave Radiometer (SMMR) and Defense Meteorological Satellite Program (DMSP) -F8, -F11 and -F13 Special Sensor Microwave/Imager (SSM/I) radiances at a grid cell size of 25 x 25 km using the NASA Team algorithm developed by the Oceans and Ice Branch, Laboratory for Hydrospheric Processes at NASA Goddard Space Flight Center (GSFC). A threshold of 15 percent concentration has been applied to the monthly climatologies.
sea_ice_concentration_08
Antarctica
Cryosphere
Earth Science
Oceans
Polar
Sea Ice
Sea Ice Concentration
Southern Hemisphere
Southern Ocean
0 0
316 332
-3961770.085 -3961769.906
3961769.894 4362961.971
-179.999998618863 -54.5580266938627
178.854238518267 -39.0981783533309
image/tiff
urn:ogc:def:crs:EPSG::3031
urn:ogc:def:crs:EPSG::4326
urn:ogc:def:crs:EPSG::3409
urn:ogc:def:crs:EPSG::3410
urn:ogc:def:crs:EPSG::3412
urn:ogc:def:crs:EPSG::3974
urn:ogc:def:crs:EPSG::3975
urn:ogc:def:crs:EPSG::3976
urn:ogc:def:crs:EPSG::32761
Stroeve, J. and W. Meier. 1999, updated 2008. Sea Ice Trends and Climatologies from SMMR and SSM/I. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/smmr_ssmi_ancillary/monthly_means.html. Accessed 27 June 2008. Compiled from: Cavalieri, D., C. Parkinson, P. Gloersen, and H. J. Zwally. 1996. Sea ice concentrations from Nimbus-7 SMMR and DMSP SSM/I passive microwave data. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/nsidc-0051.html. Background: Monthly climatologies of sea ice concentration represent mean ice concentration percentages for each month over the entire time period 1979-2007, which is generated from passive microwave brightness temperature data derived from Nimbus-7 Scanning Multichannel Microwave Radiometer (SMMR) and Defense Meteorological Satellite Program (DMSP) -F8, -F11 and -F13 Special Sensor Microwave/Imager (SSM/I) radiances at a grid cell size of 25 x 25 km using the NASA Team algorithm developed by the Oceans and Ice Branch, Laboratory for Hydrospheric Processes at NASA Goddard Space Flight Center (GSFC). A threshold of 15 percent concentration has been applied to the monthly climatologies.
Stroeve, J. and W. Meier. 1999, updated 2008. Sea Ice Trends and Climatologies from SMMR and SSM/I. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/smmr_ssmi_ancillary/monthly_means.html. Accessed 27 June 2008. Compiled from: Cavalieri, D., C. Parkinson, P. Gloersen, and H. J. Zwally. 1996. Sea ice concentrations from Nimbus-7 SMMR and DMSP SSM/I passive microwave data. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/nsidc-0051.html. Background: Monthly climatologies of sea ice concentration represent mean ice concentration percentages for each month over the entire time period 1979-2007, which is generated from passive microwave brightness temperature data derived from Nimbus-7 Scanning Multichannel Microwave Radiometer (SMMR) and Defense Meteorological Satellite Program (DMSP) -F8, -F11 and -F13 Special Sensor Microwave/Imager (SSM/I) radiances at a grid cell size of 25 x 25 km using the NASA Team algorithm developed by the Oceans and Ice Branch, Laboratory for Hydrospheric Processes at NASA Goddard Space Flight Center (GSFC). A threshold of 15 percent concentration has been applied to the monthly climatologies.
sea_ice_concentration_09
Antarctica
Cryosphere
Earth Science
Oceans
Polar
Sea Ice
Sea Ice Concentration
Southern Hemisphere
Southern Ocean
0 0
316 332
-3961770.085 -3961769.906
3961769.894 4362961.971
-179.999998618863 -54.5580266938627
178.854238518267 -39.0981783533309
image/tiff
urn:ogc:def:crs:EPSG::3031
urn:ogc:def:crs:EPSG::4326
urn:ogc:def:crs:EPSG::3409
urn:ogc:def:crs:EPSG::3410
urn:ogc:def:crs:EPSG::3412
urn:ogc:def:crs:EPSG::3974
urn:ogc:def:crs:EPSG::3975
urn:ogc:def:crs:EPSG::3976
urn:ogc:def:crs:EPSG::32761
Stroeve, J. and W. Meier. 1999, updated 2008. Sea Ice Trends and Climatologies from SMMR and SSM/I. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/smmr_ssmi_ancillary/monthly_means.html. Accessed 27 June 2008. Compiled from: Cavalieri, D., C. Parkinson, P. Gloersen, and H. J. Zwally. 1996. Sea ice concentrations from Nimbus-7 SMMR and DMSP SSM/I passive microwave data. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/nsidc-0051.html. Background: Monthly climatologies of sea ice concentration represent mean ice concentration percentages for each month over the entire time period 1979-2007, which is generated from passive microwave brightness temperature data derived from Nimbus-7 Scanning Multichannel Microwave Radiometer (SMMR) and Defense Meteorological Satellite Program (DMSP) -F8, -F11 and -F13 Special Sensor Microwave/Imager (SSM/I) radiances at a grid cell size of 25 x 25 km using the NASA Team algorithm developed by the Oceans and Ice Branch, Laboratory for Hydrospheric Processes at NASA Goddard Space Flight Center (GSFC). A threshold of 15 percent concentration has been applied to the monthly climatologies.
Stroeve, J. and W. Meier. 1999, updated 2008. Sea Ice Trends and Climatologies from SMMR and SSM/I. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/smmr_ssmi_ancillary/monthly_means.html. Accessed 27 June 2008. Compiled from: Cavalieri, D., C. Parkinson, P. Gloersen, and H. J. Zwally. 1996. Sea ice concentrations from Nimbus-7 SMMR and DMSP SSM/I passive microwave data. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/nsidc-0051.html. Background: Monthly climatologies of sea ice concentration represent mean ice concentration percentages for each month over the entire time period 1979-2007, which is generated from passive microwave brightness temperature data derived from Nimbus-7 Scanning Multichannel Microwave Radiometer (SMMR) and Defense Meteorological Satellite Program (DMSP) -F8, -F11 and -F13 Special Sensor Microwave/Imager (SSM/I) radiances at a grid cell size of 25 x 25 km using the NASA Team algorithm developed by the Oceans and Ice Branch, Laboratory for Hydrospheric Processes at NASA Goddard Space Flight Center (GSFC). A threshold of 15 percent concentration has been applied to the monthly climatologies.
sea_ice_concentration_10
Antarctica
Cryosphere
Earth Science
Oceans
Polar
Sea Ice
Sea Ice Concentration
Southern Hemisphere
Southern Ocean
0 0
316 332
-3961770.085 -3961769.906
3961769.894 4362961.971
-179.999998618863 -54.5580266938627
178.854238518267 -39.0981783533309
image/tiff
urn:ogc:def:crs:EPSG::3031
urn:ogc:def:crs:EPSG::4326
urn:ogc:def:crs:EPSG::3409
urn:ogc:def:crs:EPSG::3410
urn:ogc:def:crs:EPSG::3412
urn:ogc:def:crs:EPSG::3974
urn:ogc:def:crs:EPSG::3975
urn:ogc:def:crs:EPSG::3976
urn:ogc:def:crs:EPSG::32761
Stroeve, J. and W. Meier. 1999, updated 2008. Sea Ice Trends and Climatologies from SMMR and SSM/I. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/smmr_ssmi_ancillary/monthly_means.html. Accessed 27 June 2008. Compiled from: Cavalieri, D., C. Parkinson, P. Gloersen, and H. J. Zwally. 1996. Sea ice concentrations from Nimbus-7 SMMR and DMSP SSM/I passive microwave data. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/nsidc-0051.html. Background: Monthly climatologies of sea ice concentration represent mean ice concentration percentages for each month over the entire time period 1979-2007, which is generated from passive microwave brightness temperature data derived from Nimbus-7 Scanning Multichannel Microwave Radiometer (SMMR) and Defense Meteorological Satellite Program (DMSP) -F8, -F11 and -F13 Special Sensor Microwave/Imager (SSM/I) radiances at a grid cell size of 25 x 25 km using the NASA Team algorithm developed by the Oceans and Ice Branch, Laboratory for Hydrospheric Processes at NASA Goddard Space Flight Center (GSFC). A threshold of 15 percent concentration has been applied to the monthly climatologies.
Stroeve, J. and W. Meier. 1999, updated 2008. Sea Ice Trends and Climatologies from SMMR and SSM/I. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/smmr_ssmi_ancillary/monthly_means.html. Accessed 27 June 2008. Compiled from: Cavalieri, D., C. Parkinson, P. Gloersen, and H. J. Zwally. 1996. Sea ice concentrations from Nimbus-7 SMMR and DMSP SSM/I passive microwave data. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/nsidc-0051.html. Background: Monthly climatologies of sea ice concentration represent mean ice concentration percentages for each month over the entire time period 1979-2007, which is generated from passive microwave brightness temperature data derived from Nimbus-7 Scanning Multichannel Microwave Radiometer (SMMR) and Defense Meteorological Satellite Program (DMSP) -F8, -F11 and -F13 Special Sensor Microwave/Imager (SSM/I) radiances at a grid cell size of 25 x 25 km using the NASA Team algorithm developed by the Oceans and Ice Branch, Laboratory for Hydrospheric Processes at NASA Goddard Space Flight Center (GSFC). A threshold of 15 percent concentration has been applied to the monthly climatologies.
sea_ice_concentration_11
Antarctica
Cryosphere
Earth Science
Oceans
Polar
Sea Ice
Sea Ice Concentration
Southern Hemisphere
Southern Ocean
0 0
316 332
-3961770.085 -3961769.906
3961769.894 4362961.971
-179.999998618863 -54.5580266938627
178.854238518267 -39.0981783533309
image/tiff
urn:ogc:def:crs:EPSG::3031
urn:ogc:def:crs:EPSG::4326
urn:ogc:def:crs:EPSG::3409
urn:ogc:def:crs:EPSG::3410
urn:ogc:def:crs:EPSG::3412
urn:ogc:def:crs:EPSG::3974
urn:ogc:def:crs:EPSG::3975
urn:ogc:def:crs:EPSG::3976
urn:ogc:def:crs:EPSG::32761
Stroeve, J. and W. Meier. 1999, updated 2008. Sea Ice Trends and Climatologies from SMMR and SSM/I. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/smmr_ssmi_ancillary/monthly_means.html. Accessed 27 June 2008. Compiled from: Cavalieri, D., C. Parkinson, P. Gloersen, and H. J. Zwally. 1996. Sea ice concentrations from Nimbus-7 SMMR and DMSP SSM/I passive microwave data. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/nsidc-0051.html. Background: Monthly climatologies of sea ice concentration represent mean ice concentration percentages for each month over the entire time period 1979-2007, which is generated from passive microwave brightness temperature data derived from Nimbus-7 Scanning Multichannel Microwave Radiometer (SMMR) and Defense Meteorological Satellite Program (DMSP) -F8, -F11 and -F13 Special Sensor Microwave/Imager (SSM/I) radiances at a grid cell size of 25 x 25 km using the NASA Team algorithm developed by the Oceans and Ice Branch, Laboratory for Hydrospheric Processes at NASA Goddard Space Flight Center (GSFC). A threshold of 15 percent concentration has been applied to the monthly climatologies.
Stroeve, J. and W. Meier. 1999, updated 2008. Sea Ice Trends and Climatologies from SMMR and SSM/I. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/smmr_ssmi_ancillary/monthly_means.html. Accessed 27 June 2008. Compiled from: Cavalieri, D., C. Parkinson, P. Gloersen, and H. J. Zwally. 1996. Sea ice concentrations from Nimbus-7 SMMR and DMSP SSM/I passive microwave data. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/nsidc-0051.html. Background: Monthly climatologies of sea ice concentration represent mean ice concentration percentages for each month over the entire time period 1979-2007, which is generated from passive microwave brightness temperature data derived from Nimbus-7 Scanning Multichannel Microwave Radiometer (SMMR) and Defense Meteorological Satellite Program (DMSP) -F8, -F11 and -F13 Special Sensor Microwave/Imager (SSM/I) radiances at a grid cell size of 25 x 25 km using the NASA Team algorithm developed by the Oceans and Ice Branch, Laboratory for Hydrospheric Processes at NASA Goddard Space Flight Center (GSFC). A threshold of 15 percent concentration has been applied to the monthly climatologies.
sea_ice_concentration_12
Antarctica
Cryosphere
Earth Science
Oceans
Polar
Sea Ice
Sea Ice Concentration
Southern Hemisphere
Southern Ocean
0 0
316 332
-3961770.085 -3961769.906
3961769.894 4362961.971
-179.999998618863 -54.5580266938627
178.854238518267 -39.0981783533309
image/tiff
urn:ogc:def:crs:EPSG::3031
urn:ogc:def:crs:EPSG::4326
urn:ogc:def:crs:EPSG::3409
urn:ogc:def:crs:EPSG::3410
urn:ogc:def:crs:EPSG::3412
urn:ogc:def:crs:EPSG::3974
urn:ogc:def:crs:EPSG::3975
urn:ogc:def:crs:EPSG::3976
urn:ogc:def:crs:EPSG::32761
Haran, T., J. Bohlander, T. Scambos, T. Painter, and M. Fahnestock compilers. 2005, updated 2006. MODIS mosaic of Antarctica (MOA) image map. Boulder, CO, USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/nsidc-0280.html. Background: The MODIS Mosaic of Antarctica (MOA) surface morphology image map is derived from composites of 260 MODIS (Moderate-resolution Imaging Spectroradiometer) orbit swaths acquired between 20 November 2003 and 29 February 2004. The MOA provides a cloud-free view of the ice sheet, ice shelves, and land surfaces. All land areas larger than a few hundred meters that are south of 60 deg S are included in the mosaic, as well as persistent fast ice regions and some grounded icebergs present near the coast in the 2003-2004 austral summer. The MOA surface morphology image map is derived from digitally processed MODIS Band 1 data: this is viewable in here at a grid scale of 125 m.
Haran, T., J. Bohlander, T. Scambos, T. Painter, and M. Fahnestock compilers. 2005, updated 2006. MODIS mosaic of Antarctica (MOA) image map. Boulder, CO, USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/nsidc-0280.html. Background: The MODIS Mosaic of Antarctica (MOA) surface morphology image map is derived from composites of 260 MODIS (Moderate-resolution Imaging Spectroradiometer) orbit swaths acquired between 20 November 2003 and 29 February 2004. The MOA provides a cloud-free view of the ice sheet, ice shelves, and land surfaces. All land areas larger than a few hundred meters that are south of 60 deg S are included in the mosaic, as well as persistent fast ice regions and some grounded icebergs present near the coast in the 2003-2004 austral summer. The MOA surface morphology image map is derived from digitally processed MODIS Band 1 data: this is viewable here at a grid scale of 125 m and using a nominal contrast stretch with minimum and maximum surface brightness values of 15000 and 17000 respectively.
moa
Antarctica
Cryosphere
Earth Science
Glacial Landforms/Processes
Ice Sheets
Polar
Surface Morphology
0 0
48332 48332
-3174450 -3225675
2867175 2815950
-179.417324048405 -64.4944023635578
179.509569483768 -49.9903764186185
image/tiff
urn:ogc:def:crs:EPSG::3031
urn:ogc:def:crs:EPSG::4326
urn:ogc:def:crs:EPSG::3409
urn:ogc:def:crs:EPSG::3410
urn:ogc:def:crs:EPSG::3412
urn:ogc:def:crs:EPSG::3974
urn:ogc:def:crs:EPSG::3975
urn:ogc:def:crs:EPSG::3976
urn:ogc:def:crs:EPSG::32761
Ferrigno, J.G., J.L. Mullins, J. Stapleton, P.S. Chavez, Jr., M.G. Velasco, R.S. Williams, Jr., G.F. Delinski, Jr., and D. Lear. 1995. Image Data for: Satellite Image Map of Antarctica Using Advanced Very High Resolution Radiometer (AVHRR) Images. Flagstaff, Arizona, USA: United States Geological Survey (USGS). Available at http://terraweb.wr.usgs.gov/TRS/projects/Antarctica/AVHRR.html. Accessed on 09 May 2008. Background: The satellite images used in the mosaic were acquired by the Advanced Very High Resolution Radiometer (AVHRR) sensors on the National Oceanic and Atmospheric Administration (NOAA) satellites; the images used in the mosaic were collected during the period 1980 to 1994. Although the AVHRR scans a 2400 km-wide swath and can image nearly half of the continent of Antarctica on a single orbit, 63 sections of 38 scenes were needed to compile the nearly cloud-free digital mosaic. Band 1 of AVHRR covers the wavelengths of 580 to 680 nm.
Ferrigno, J.G., J.L. Mullins, J. Stapleton, P.S. Chavez, Jr., M.G. Velasco, R.S. Williams, Jr., G.F. Delinski, Jr., and D. Lear. 1995. Image Data for: Satellite Image Map of Antarctica Using Advanced Very High Resolution Radiometer (AVHRR) Images. Flagstaff, Arizona, USA: United States Geological Survey (USGS). Available at http://terraweb.wr.usgs.gov/TRS/projects/Antarctica/AVHRR.html. Accessed on 09 May 2008. Background: The satellite images used in the mosaic were acquired by the Advanced Very High Resolution Radiometer (AVHRR) sensors on the National Oceanic and Atmospheric Administration (NOAA) satellites; the images used in the mosaic were collected during the period 1980 to 1994. Although the AVHRR scans a 2400 km-wide swath and can image nearly half of the continent of Antarctica on a single orbit, 63 sections of 38 scenes were needed to compile the nearly cloud-free digital mosaic. Band 1 of AVHRR covers the wavelengths of 580 to 680 nm. This mosaic is viewable here using a nominal contrast stretch.
avhrr_mosaic_band1
Antarctica
Cryosphere
Earth Science
Glacial Landforms/Processes
Ice Sheets
Polar
Surface Morphology
0 0
5739 4899
-2878479.6155 -2534711.7514
2918920.3845 2414288.2486
-179.146663171272 -68.0408744135757
179.542938909638 -55.4629247822698
image/tiff
urn:ogc:def:crs:EPSG::3031
urn:ogc:def:crs:EPSG::4326
urn:ogc:def:crs:EPSG::3409
urn:ogc:def:crs:EPSG::3410
urn:ogc:def:crs:EPSG::3412
urn:ogc:def:crs:EPSG::3974
urn:ogc:def:crs:EPSG::3975
urn:ogc:def:crs:EPSG::3976
urn:ogc:def:crs:EPSG::32761
Ferrigno, J.G., J.L. Mullins, J. Stapleton, P.S. Chavez, Jr., M.G. Velasco, R.S. Williams, Jr., G.F. Delinski, Jr., and D. Lear. 1995. Image Data for: Satellite Image Map of Antarctica Using Advanced Very High Resolution Radiometer (AVHRR) Images. Flagstaff, Arizona, USA: United States Geological Survey (USGS). Available at http://terraweb.wr.usgs.gov/TRS/projects/Antarctica/AVHRR.html. Accessed on 09 May 2008. Background: The satellite images used in the mosaic were acquired by the Advanced Very High Resolution Radiometer (AVHRR) sensors on the National Oceanic and Atmospheric Administration (NOAA) satellites; the images used in the mosaic were collected during the period 1980 to 1994. Although the AVHRR scans a 2400 km-wide swath and can image nearly half of the continent of Antarctica on a single orbit, 63 sections of 38 scenes were needed to compile the nearly cloud-free digital mosaic. Band 1 of AVHRR covers the wavelengths of 725 to 1100 nm.
Ferrigno, J.G., J.L. Mullins, J. Stapleton, P.S. Chavez, Jr., M.G. Velasco, R.S. Williams, Jr., G.F. Delinski, Jr., and D. Lear. 1995. Image Data for: Satellite Image Map of Antarctica Using Advanced Very High Resolution Radiometer (AVHRR) Images. Flagstaff, Arizona, USA: United States Geological Survey (USGS). Available at http://terraweb.wr.usgs.gov/TRS/projects/Antarctica/AVHRR.html. Accessed on 09 May 2008. Background: The satellite images used in the mosaic were acquired by the Advanced Very High Resolution Radiometer (AVHRR) sensors on the National Oceanic and Atmospheric Administration (NOAA) satellites; the images used in the mosaic were collected during the period 1980 to 1994. Although the AVHRR scans a 2400 km-wide swath and can image nearly half of the continent of Antarctica on a single orbit, 63 sections of 38 scenes were needed to compile the nearly cloud-free digital mosaic. Band 2 of AVHRR covers the wavelengths of 725 to 1100 nm. This mosaic is viewable here using a nominal contrast stretch.
avhrr_mosaic_band2
Antarctica
Cryosphere
Earth Science
Glacial Landforms/Processes
Ice Sheets
Polar
Surface Morphology
0 0
5739 4899
-2878479.6155 -2534711.7514
2918920.3845 2414288.2486
-179.146663171272 -68.0408744135757
179.542938909638 -55.4629247822698
image/tiff
urn:ogc:def:crs:EPSG::3031
urn:ogc:def:crs:EPSG::4326
urn:ogc:def:crs:EPSG::3409
urn:ogc:def:crs:EPSG::3410
urn:ogc:def:crs:EPSG::3412
urn:ogc:def:crs:EPSG::3974
urn:ogc:def:crs:EPSG::3975
urn:ogc:def:crs:EPSG::3976
urn:ogc:def:crs:EPSG::32761
Jezek, K. and RAMP Product Team. 2002. RAMP AMM-1 SAR image mosaic of Antarctica. Fairbanks, Alaska USA: Alaska SAR Facility, in association with the National Snow and Ice Data Center, Boulder, Colorado USA. Digital media. Available at http://nsidc.org/data/nsidc-0103.html. Accessed 28 June 2008. Background: In 1997, the Canadian RADARSAT-1 satellite was rotated in orbit, so that its synthetic aperture radar (SAR) antenna looked south towards Antarctica. This permitted the first high-resolution mapping of the entire continent of Antarctica. In eighteen days, the satellite acquired a complete coverage of radar image swaths as part of the first Antarctic Mapping Mission (AMM-1). Swath images have been assembled into an image mosaic depicting the entire continent. Instrument: RADARSAT-1 Synthetic Aperture Radar (SAR). Resolution: 125 m. Frequency/Wavelength: C-Band/5.66 cm. Time Period: September through October 1997.
Jezek, K. and RAMP Product Team. 2002. RAMP AMM-1 SAR image mosaic of Antarctica. Fairbanks, Alaska USA: Alaska SAR Facility, in association with the National Snow and Ice Data Center, Boulder, Colorado USA. Digital media. Available at http://nsidc.org/data/nsidc-0103.html. Accessed 28 June 2008. Background: In 1997, the Canadian RADARSAT-1 satellite was rotated in orbit, so that its synthetic aperture radar (SAR) antenna looked south towards Antarctica. This permitted the first high-resolution mapping of the entire continent of Antarctica. In eighteen days, the satellite acquired a complete coverage of radar image swaths as part of the first Antarctic Mapping Mission (AMM-1). Swath images have been assembled into an image mosaic depicting the entire continent. Instrument: RADARSAT-1 Synthetic Aperture Radar (SAR). Resolution: 125 m. Frequency/Wavelength: C-Band/5.66 cm. Time Period: September through October 1997. This mosaic is viewable here using a nominal contrast stretch.
ramp_sar_mosaic
Antarctica
Cryosphere
Earth Science
Glacial Landforms/Processes
Ice Sheets
Polar
Surface Morphology
0 0
48332 41778
-3174450 -2816050
2867175 2406325
-179.332574695053 -68.1109610327008
179.438235330196 -52.3100104724043
image/tiff
urn:ogc:def:crs:EPSG::3031
urn:ogc:def:crs:EPSG::4326
urn:ogc:def:crs:EPSG::3409
urn:ogc:def:crs:EPSG::3410
urn:ogc:def:crs:EPSG::3412
urn:ogc:def:crs:EPSG::3974
urn:ogc:def:crs:EPSG::3975
urn:ogc:def:crs:EPSG::3976
urn:ogc:def:crs:EPSG::32761
Jezek, K. and RAMP Product Team. 2002. RAMP AMM-1 SAR image mosaic of Antarctica. Fairbanks, Alaska USA: Alaska SAR Facility, in association with the National Snow and Ice Data Center, Boulder, Colorado USA. Digital media. Available at http://nsidc.org/data/nsidc-0103.html. Accessed 28 June 2008. Background: In 1997, the Canadian RADARSAT-1 satellite was rotated in orbit, so that its synthetic aperture radar (SAR) antenna looked south towards Antarctica. This permitted the first high-resolution mapping of the entire continent of Antarctica. In eighteen days, the satellite acquired a complete coverage of radar image swaths as part of the first Antarctic Mapping Mission (AMM-1). Swath images have been assembled into an image mosaic depicting the entire continent. Instrument: RADARSAT-1 Synthetic Aperture Radar (SAR). Resolution: 125 m. Frequency/Wavelength: C-Band/5.66 cm. Time Period: September through October 1997. This mosaic is viewable here with its true backscatter values (sigma-naught), ranging from -30.000610 dB to 9.999390 dB.
Jezek, K. and RAMP Product Team. 2002. RAMP AMM-1 SAR image mosaic of Antarctica. Fairbanks, Alaska USA: Alaska SAR Facility, in association with the National Snow and Ice Data Center, Boulder, Colorado USA. Digital media. Available at http://nsidc.org/data/nsidc-0103.html. Accessed 28 June 2008. Background: In 1997, the Canadian RADARSAT-1 satellite was rotated in orbit, so that its synthetic aperture radar (SAR) antenna looked south towards Antarctica. This permitted the first high-resolution mapping of the entire continent of Antarctica. In eighteen days, the satellite acquired a complete coverage of radar image swaths as part of the first Antarctic Mapping Mission (AMM-1). Swath images have been assembled into an image mosaic depicting the entire continent. Instrument: RADARSAT-1 Synthetic Aperture Radar (SAR). Resolution: 125 m. Frequency/Wavelength: C-Band/5.66 cm. Time Period: September through October 1997. This mosaic is viewable here with its true backscatter values (sigma-naught), ranging from -30.000610 dB to 9.999390 dB.
ramp_sar_mosaic_true_backscatter
Antarctica
Cryosphere
Earth Science
Glacial Landforms/Processes
Ice Sheets
Polar
Surface Morphology
0 0
48332 41778
-3174450 -2816050
2867175 2406325
-179.332574695053 -68.1109610327008
179.438235330196 -52.3100104724043
image/tiff
urn:ogc:def:crs:EPSG::3031
urn:ogc:def:crs:EPSG::4326
urn:ogc:def:crs:EPSG::3409
urn:ogc:def:crs:EPSG::3410
urn:ogc:def:crs:EPSG::3412
urn:ogc:def:crs:EPSG::3974
urn:ogc:def:crs:EPSG::3975
urn:ogc:def:crs:EPSG::3976
urn:ogc:def:crs:EPSG::32761
Kim, K., K. Jezek, and H. Lui. 2006. DISP image mosaic of coastal Antarctica. Columbus, Ohio USA: Byrd Polar Research Center, Remote Sensing Laboratory. Digital Media. Available at http://bprc.osu.edu/rsl/index_files/BPRCData.htm. Accessed 09 May 2008. Background: This mosaic of coastal Antarctica was compiled from U.S. Declassified Intelligence Satellite Photographs (DISP) at 100 m resolution from the time period 29 August - 03 November 1963.
Kim, K., K. Jezek, and H. Lui. 2006. DISP image mosaic of coastal Antarctica. Columbus, Ohio USA: Byrd Polar Research Center, Remote Sensing Laboratory. Digital Media. Available at http://bprc.osu.edu/rsl/index_files/BPRCData.htm. Accessed 09 May 2008. Background: This mosaic of coastal Antarctica was compiled from U.S. Declassified Intelligence Satellite Photographs (DISP) at 100 m resolution from the time period 29 August - 03 November 1963. This mosaic is viewable here using a nominal contrast stretch.
disp_mosaic
Antarctica
Cryosphere
Earth Science
Glacial Landforms/Processes
Ice Sheets
Polar
Surface Morphology
0 0
57423 48673
-2757100 -2485300
2985300 2382100
-179.982755706844 -68.3276710298734
178.693625372302 -55.3066695744563
image/tiff
urn:ogc:def:crs:EPSG::3031
urn:ogc:def:crs:EPSG::4326
urn:ogc:def:crs:EPSG::3409
urn:ogc:def:crs:EPSG::3410
urn:ogc:def:crs:EPSG::3412
urn:ogc:def:crs:EPSG::3974
urn:ogc:def:crs:EPSG::3975
urn:ogc:def:crs:EPSG::3976
urn:ogc:def:crs:EPSG::32761
Lythe, M. B., D. G. Vaughan, and the BEDMAP Consortium. 2000. BEDMAP - bed topography of the Antarctic. Cambridge, United Kingdom: British Antarctic Survey. Digital Media. Available at http://www.antarctica.ac.uk//bas_research/data/access/bedmap/. Accessed 28 June 2008. Background: The BEDMAP project was conceived as an attempt to rationalise the coverage of ice thickness measurements over Antarctica, collect the data together and produce a new topographic model of the bed of the Antarctic Ice Sheet, to provide a new basis for all aspects of Antarctic geoscience. Includes the entire area south of 60 degrees south latitude. Resolution: 5 km. Time Period: 1951-1999. Sources: ground-based and airborne surveys, primarily from radar and seismic sounding as well as gravimetric measurements. Elevations are relative to the OSU91A geoid.
Lythe, M. B., D. G. Vaughan, and the BEDMAP Consortium. 2000. BEDMAP - bed topography of the Antarctic. Cambridge, United Kingdom: British Antarctic Survey. Digital Media. Available at http://www.antarctica.ac.uk//bas_research/data/access/bedmap/. Accessed 28 June 2008. Background: The BEDMAP project was conceived as an attempt to rationalise the coverage of ice thickness measurements over Antarctica, collect the data together and produce a new topographic model of the bed of the Antarctic Ice Sheet, to provide a new basis for all aspects of Antarctic geoscience. Includes the entire area south of 60 degrees south latitude. Resolution: 5 km. Time Period: 1951-1999. Sources: ground-based and airborne surveys, primarily from radar and seismic sounding as well as gravimetric measurements. Elevations are relative to the OSU91A geoid. This map is viewable here using a nominal contrast stretch with minimum and maximum elevations (m) of -2500 and 3600 respectively.
bedmap
Antarctica
Bedrock Elevation
Cryosphere
Earth Science
Ice Sheets
Ice Sheet Elevation
Polar
0 0
1332 1332
-3330000 -3335000
3335000 3330000
-178.898029672624 -60.0269755419945
179.95704964859 -48.4415197516681
image/tiff
urn:ogc:def:crs:EPSG::3031
urn:ogc:def:crs:EPSG::4326
urn:ogc:def:crs:EPSG::3409
urn:ogc:def:crs:EPSG::3410
urn:ogc:def:crs:EPSG::3412
urn:ogc:def:crs:EPSG::3974
urn:ogc:def:crs:EPSG::3975
urn:ogc:def:crs:EPSG::3976
urn:ogc:def:crs:EPSG::32761
Bamber, J. L. and R. A. Bindschadler. 1997. An improved elevation dataset for climate and ice-sheet modelling: validation with satellite imagery. Annals of Glaciology 25:438-444.; Bamber, J. L. and R. A. Bindschadler. 1997. Antarctic 5-km digital elevation model from ERS-1 altimetry. Boulder, Colorado USA: National Snow and Ice Data Center. Digital Media. Available at http://nsidc.org/data/nsidc-0076.html. Accessed 03 July 2008. Background: This data set provides a digital elevation model (DEM) for Antarctica to 81.5 degrees south latitude, at a resolution of 5 km. Approximately twenty million data points were used to generate this data set. Data points were derived from European Remote Sensing Satellite-1 (ERS-1) radar altimetry during the geodetic phase from March 1994 to May 1995. The improved density in coverage and resolution, compared with past satellite altimetry missions, provides better detection of topographic detail such as surface undulations, ice streams, grounding zones, and interstream ridges. This DEM is viewable here using a nominal contrast stretch with minimum and maximum OSU91A elevations (m) of 0 and 3600 respectively.
Bamber, J. L. and R. A. Bindschadler. 1997. An improved elevation dataset for climate and ice-sheet modelling: validation with satellite imagery. Annals of Glaciology 25:438-444.; Bamber, J. L. and R. A. Bindschadler. 1997. Antarctic 5-km digital elevation model from ERS-1 altimetry. Boulder, Colorado USA: National Snow and Ice Data Center. Digital Media. Available at http://nsidc.org/data/nsidc-0076.html. Accessed 03 July 2008. Background: This data set provides a digital elevation model (DEM) for Antarctica to 81.5 degrees south latitude, at a resolution of 5 km. Approximately twenty million data points were used to generate this data set. Data points were derived from European Remote Sensing Satellite-1 (ERS-1) radar altimetry during the geodetic phase from March 1994 to May 1995. The improved density in coverage and resolution, compared with past satellite altimetry missions, provides better detection of topographic detail such as surface undulations, ice streams, grounding zones, and interstream ridges. This DEM is viewable here using a nominal contrast stretch with minimum and maximum OSU91A elevations (m) of 0 and 3600 respectively.
bamber_dem
Antarctica
Cryosphere
Earth Science
Ice Sheets
Ice Sheet Elevation
Polar
0 0
1120 1120
-2802500 -2802500
2802500 2802500
-178.854237161825 -64.6135985034764
180 -54.6438837793572
image/tiff
urn:ogc:def:crs:EPSG::3031
urn:ogc:def:crs:EPSG::4326
urn:ogc:def:crs:EPSG::3409
urn:ogc:def:crs:EPSG::3410
urn:ogc:def:crs:EPSG::3412
urn:ogc:def:crs:EPSG::3974
urn:ogc:def:crs:EPSG::3975
urn:ogc:def:crs:EPSG::3976
urn:ogc:def:crs:EPSG::32761
DiMarzio, J., A. Brenner, R. Schutz, C. A. Shuman, and H. J. Zwally. 2007. GLAS/ICESat 500 m laser altimetry digital elevation model of Antarctica. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/nsidc-0304.html. Accessed 03 July 2008. Background: This digital elevation model (DEM) of Antarctica is derived from Geoscience Laser Altimeter System (GLAS)/Ice, Cloud, and land Elevation Satellite (ICESat) laser altimetry profile data and provides new surface elevation grids of the ice sheets and coastal areas, with greater latitudinal extent and fewer slope-related effects than radar altimetry. This DEM is generated from the first seven operational periods (from February 2003 through June 2005) of the GLAS instrument. The grid is provided at 500 m spacing and covers all of Antarctica north of 86 degrees S. Elevations are reported as centimeters above the WGS84 ellipsoid.
DiMarzio, J., A. Brenner, R. Schutz, C. A. Shuman, and H. J. Zwally. 2007. GLAS/ICESat 500 m laser altimetry digital elevation model of Antarctica. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/nsidc-0304.html. Accessed 03 July 2008. Background: This digital elevation model (DEM) of Antarctica is derived from Geoscience Laser Altimeter System (GLAS)/Ice, Cloud, and land Elevation Satellite (ICESat) laser altimetry profile data and provides new surface elevation grids of the ice sheets and coastal areas, with greater latitudinal extent and fewer slope-related effects than radar altimetry. This DEM is generated from the first seven operational periods (from February 2003 through June 2005) of the GLAS instrument. The grid is provided at 500 m spacing and covers all of Antarctica north of 86 degrees S. Elevations are reported as centimeters above the WGS84 ellipsoid. This DEM is viewable here using a nominal contrast stretch with minimum and maximum WGS84 elevations (cm) of 1 and 360000 respectively.
glas_dem
Antarctica
Cryosphere
Earth Science
Ice Sheets
Ice Sheet Elevation
Polar
0 0
11351 9367
-2812250 -2384250
2863750 2299750
-179.254842425175 -68.9978885616801
179.381227235488 -56.5465281891636
image/tiff
urn:ogc:def:crs:EPSG::3031
urn:ogc:def:crs:EPSG::4326
urn:ogc:def:crs:EPSG::3409
urn:ogc:def:crs:EPSG::3410
urn:ogc:def:crs:EPSG::3412
urn:ogc:def:crs:EPSG::3974
urn:ogc:def:crs:EPSG::3975
urn:ogc:def:crs:EPSG::3976
urn:ogc:def:crs:EPSG::32761
Liu, H., K. Jezek, B. Li, and Z. Zhao. 2001. Radarsat Antarctic Mapping Project digital elevation model version 2. Boulder, CO, USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/nsidc-0082.html. Accessed on 06 June 2008. Background: The high-resolution (200 m) Radarsat Antarctic Mapping Project (RAMP) Digital Elevation Model (DEM) combines topographic data from a variety of sources to provide consistent coverage of all of Antarctica. Version 2 improves upon the original version by incorporating new topographic data, error corrections, extended coverage, and other modifications. The DEM incorporates topographic data from satellite radar altimetry, airborne radar surveys, the recently-updated Antarctic Digital Database (version 2), and large-scale topographic maps from the U.S. Geological Survey (USGS) and the Australian Antarctic Division. Data were collected between the 1940s and present, with most collected during the 1980s and 1990s. Although the RAMP DEM was created to aid in processing RAMP radar data, it does not utilize any RAMP radar data. Elevations are reported here with reference to WGS84.
Liu, H., K. Jezek, B. Li, and Z. Zhao. 2001. Radarsat Antarctic Mapping Project digital elevation model version 2. Boulder, CO, USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/nsidc-0082.html. Accessed on 06 June 2008. Background: The high-resolution (200 m) Radarsat Antarctic Mapping Project (RAMP) Digital Elevation Model (DEM) combines topographic data from a variety of sources to provide consistent coverage of all of Antarctica. Version 2 improves upon the original version by incorporating new topographic data, error corrections, extended coverage, and other modifications. The DEM incorporates topographic data from satellite radar altimetry, airborne radar surveys, the recently-updated Antarctic Digital Database (version 2), and large-scale topographic maps from the U.S. Geological Survey (USGS) and the Australian Antarctic Division. Data were collected between the 1940s and present, with most collected during the 1980s and 1990s. Although the RAMP DEM was created to aid in processing RAMP radar data, it does not utilize any RAMP radar data. This DEM is viewable here at a grid scale of 200 m and using a nominal contrast stretch with minimum and maximum WGS84 elevations (m) of -67 and 3600 respectively.
ramp_dem
Antarctica
Cryosphere
Earth Science
Ice Sheets
Ice Sheet Elevation
Polar
0 0
28679 24579
-2868000 -2458000
2868000 2458000
-178.663185706785 -67.6536030512112
180 -56.2110109437751
image/tiff
urn:ogc:def:crs:EPSG::3031
urn:ogc:def:crs:EPSG::4326
urn:ogc:def:crs:EPSG::3409
urn:ogc:def:crs:EPSG::3410
urn:ogc:def:crs:EPSG::3412
urn:ogc:def:crs:EPSG::3974
urn:ogc:def:crs:EPSG::3975
urn:ogc:def:crs:EPSG::3976
urn:ogc:def:crs:EPSG::32761
Arthern, R. J., D. P. Winebrenner, and D. G. Vaughan. 2006. Antarctic snow accumulation mapped using polarization of 4.3-cm wavelength microwave emission. Journal of Geophysical Research. 111, D06107, doi:10.1029/2004JD005667. Data provided by the British Antarctic Survery, Cambridge, United Kingdom. Available at http://www.antarctica.ac.uk//bas_research/data/online_resources/snow_accumulation/. Accessed 27 October 2006. Background: This map of Antarctic snow accumulation is derived from a compilation of field measurements. Satellite observations from AMSR-E and AVHRR are used to guide the interpolation. Values for locations subject to snow melt may be unreliable. From this map can be obtained a value of 143 +/- 4 mm per year snow water equivalent for the average rate of snow accumulation upon the grounded ice sheet of Antarctica. Resolution: 125 km.
Arthern, R. J., D. P. Winebrenner, and D. G. Vaughan. 2006. Antarctic snow accumulation mapped using polarization of 4.3-cm wavelength microwave emission. Journal of Geophysical Research. 111, D06107, doi:10.1029/2004JD005667. Data provided by the British Antarctic Survery, Cambridge, United Kingdom. Available at http://www.antarctica.ac.uk//bas_research/data/online_resources/snow_accumulation/. Accessed 27 October 2006. Background: This map of Antarctic snow accumulation is derived from a compilation of field measurements. Satellite observations from AMSR-E and AVHRR are used to guide the interpolation. Values for locations subject to snow melt may be unreliable. From this map can be obtained a value of 143 +/- 4 mm per year snow water equivalent for the average rate of snow accumulation upon the grounded ice sheet of Antarctica. Resolution: 125 km.
accumulation_arthern
Antarctica
Cryosphere
Earth Science
Ice Sheets
Polar
Snow Accumulation
Snow Water Equivalent
0 0
315 331
-3950000 -3950000
3950000 4350000
-178.854237161825 -54.7557082804248
180 -39.363354916617
image/tiff
urn:ogc:def:crs:EPSG::3031
urn:ogc:def:crs:EPSG::4326
urn:ogc:def:crs:EPSG::3409
urn:ogc:def:crs:EPSG::3410
urn:ogc:def:crs:EPSG::3412
urn:ogc:def:crs:EPSG::3974
urn:ogc:def:crs:EPSG::3975
urn:ogc:def:crs:EPSG::3976
urn:ogc:def:crs:EPSG::32761
Monaghan, A. J., D. H. Bromwich, and S.-H. Wang. 2006. Recent trends in Antarctic snow accumulation from Polar MM5 simulations. Philisophical Transactions of the Royal Society A 364: 1683-1708. Data provided by the Ohio State University, Byrd Polar Research Center, Polar Meteorology Group, Columbus, Ohio USA. Available at http://polarmet.mps.ohio-state.edu/PolarMet/ant_hindcast.html. Accessed 10 August 2008. Background: Polar MM5, a mesoscale atmospheric model optimized for use over polar ice sheets, is employed to simulate Antarctic accumulation in recent decades by subtracting model-simulated precipitation from sublimation. Negative values therefore indicate areas where sublimation is greater than precipitation. Resolution: 60 km.
Monaghan, A. J., D. H. Bromwich, and S.-H. Wang. 2006. Recent trends in Antarctic snow accumulation from Polar MM5 simulations. Philisophical Transactions of the Royal Society A 364: 1683-1708. Data provided by the Ohio State University, Byrd Polar Research Center, Polar Meteorology Group, Columbus, Ohio USA. Available at http://polarmet.mps.ohio-state.edu/PolarMet/ant_hindcast.html. Accessed 10 August 2008. Background: Polar MM5, a mesoscale atmospheric model optimized for use over polar ice sheets, is employed to simulate Antarctic accumulation in recent decades by subtracting model-simulated precipitation from sublimation. Negative values therefore indicate areas where sublimation is greater than precipitation. Resolution: 60 km.
accumulation_monaghan
Antarctica
Cryosphere
Earth Science
Ice Sheets
Polar
Snow Accumulation
Snow Water Equivalent
0 0
120 120
-3600000 -3660000
3660000 3600000
-179.333144810304 -57.6030763030004
179.53037298031 -44.6634666514563
image/tiff
urn:ogc:def:crs:EPSG::3031
urn:ogc:def:crs:EPSG::4326
urn:ogc:def:crs:EPSG::3409
urn:ogc:def:crs:EPSG::3410
urn:ogc:def:crs:EPSG::3412
urn:ogc:def:crs:EPSG::3974
urn:ogc:def:crs:EPSG::3975
urn:ogc:def:crs:EPSG::3976
urn:ogc:def:crs:EPSG::32761
Van de Berg, W. J., M. R. van den Broeke, C. H. Reijmer, and E. van Meijgaard. 2005. Characteristics of the Antarctic surface mass balance, 1958-2002, using a regional atmospheric climate model. Annals of Glaciology 41:97-104. Data provided by Utrecht University, Utrecht, Netherlands. Accessed 10 August 2008. Background: Regional Atmospheric Climate Model version 2 (RACMO2/ANT) simulations with initial and boundary conditions provided by the European Centre for Medium-Range Weather Forecasts (ECMWF) 40-year Reanalysis (ERA-40). Resolution: 60 km. Time Period: 1958-2002. RACMO2/ANT is employed to simulate Antarctic specific surface mass balance (SSMB) in recent decades as the sum of modeled solid precipitation, sublimation/deposition, and melt.
Van de Berg, W. J., M. R. van den Broeke, C. H. Reijmer, and E. van Meijgaard. 2005. Characteristics of the Antarctic surface mass balance, 1958-2002, using a regional atmospheric climate model. Annals of Glaciology 41:97-104. Data provided by Utrecht University, Utrecht, Netherlands. Accessed 10 August 2008. Background: Regional Atmospheric Climate Model version 2 (RACMO2/ANT) simulations with initial and boundary conditions provided by the European Centre for Medium-Range Weather Forecasts (ECMWF) 40-year Reanalysis (ERA-40). Resolution: 60 km. Time Period: 1958-2002. RACMO2/ANT is employed to simulate Antarctic specific surface mass balance (SSMB) in recent decades as the sum of modeled solid precipitation, sublimation/deposition, and melt.
surface_mass_balance_van_de_berg
Antarctica
Cryosphere
Earth Science
Ice Sheet Mass Balance
Ice Sheets
Polar
Snow Accumulation
Snow Water Equivalent
0 0
120 120
-3600000 -3660000
3660000 3600000
-179.333144810304 -57.6030763030004
179.53037298031 -44.6634666514563
image/tiff
urn:ogc:def:crs:EPSG::3031
urn:ogc:def:crs:EPSG::4326
urn:ogc:def:crs:EPSG::3409
urn:ogc:def:crs:EPSG::3410
urn:ogc:def:crs:EPSG::3412
urn:ogc:def:crs:EPSG::3974
urn:ogc:def:crs:EPSG::3975
urn:ogc:def:crs:EPSG::3976
urn:ogc:def:crs:EPSG::32761
Luyendyk, B. and D. Wilson. 2003. Surface elevation and ice thickness, western Marie Byrd Land, Antarctica Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/nsidc-0119.html. Accessed 23 December 2008. Background: This layer provides surface elevation data for a portion of the Marie Byrd Land sector of West Antarctica, including the Ford Ranges, the Sulzberger Ice Shelf, much of the Edward VII Peninsula, and the Shirase Coast region of the eastern Ross Ice Shelf. The investigators used laser altimetry from a Twin Otter aircraft flying at varying altitudes, at least 300 m above the surface, at an air speed of about 130 knots. Time period: 25-27 December 1998. Flight tracks: 64. Track spacing: either 5.3 or 10.6 km. Sample points: 2,536,493. Sample spacing: ~10 m. Units: m (vs. WGS84 ellipsoid). This layer is a reduced resolution grid (750 m) of linearly interpolated values.
Luyendyk, B. and D. Wilson. 2003. Surface elevation and ice thickness, western Marie Byrd Land, Antarctica Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/nsidc-0119.html. Accessed 23 December 2008. Background: This layer provides surface elevation data for a portion of the Marie Byrd Land sector of West Antarctica, including the Ford Ranges, the Sulzberger Ice Shelf, much of the Edward VII Peninsula, and the Shirase Coast region of the eastern Ross Ice Shelf. The investigators used laser altimetry from a Twin Otter aircraft flying at varying altitudes, at least 300 m above the surface, at an air speed of about 130 knots. Time period: 25-27 December 1998. Flight tracks: 64. Track spacing: either 5.3 or 10.6 km. Sample points: 2,536,493. Sample spacing: ~10 m. Units: m (vs. WGS84 ellipsoid). This layer is a reduced resolution grid (750 m) of linearly interpolated values.
nsidc-0119.elevation.lowres
Antarctica
Cryosphere
Earth Science
Ice Sheets
Ice Sheet Elevation
Polar
0 0
1456 1456
-1897959 -951599
-805114 141246
-139.766629692109 -82.5998898477305
-80.0495162367056 -70.6381368646289
image/tiff
urn:ogc:def:crs:EPSG::3031
urn:ogc:def:crs:EPSG::4326
urn:ogc:def:crs:EPSG::3409
urn:ogc:def:crs:EPSG::3410
urn:ogc:def:crs:EPSG::3412
urn:ogc:def:crs:EPSG::3974
urn:ogc:def:crs:EPSG::3975
urn:ogc:def:crs:EPSG::3976
urn:ogc:def:crs:EPSG::32761
Luyendyk, B. and D. Wilson. 2003. Surface elevation and ice thickness, western Marie Byrd Land, Antarctica Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/nsidc-0119.html. Accessed 23 December 2008. Background: This layer provides ice thickness data for a portion of the Marie Byrd Land sector of West Antarctica, including the Ford Ranges, the Sulzberger Ice Shelf, much of the Edward VII Peninsula, and the Shirase Coast region of the eastern Ross Ice Shelf. The investigators used radar sounding from a Twin Otter aircraft flying at varying altitudes, at least 300 m above the surface, at an air speed of about 130 knots. Time period: 25-27 December 1998. Flight tracks: 64. Track spacing: either 5.3 or 10.6 km. Sample points: 1,882,811. Sample spacing: ~10 m. Units: m. This layer is a reduced resolution grid (750 m) of linearly interpolated values.
Luyendyk, B. and D. Wilson. 2003. Surface elevation and ice thickness, western Marie Byrd Land, Antarctica Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/nsidc-0119.html. Accessed 23 December 2008. Background: This layer provides ice thickness data for a portion of the Marie Byrd Land sector of West Antarctica, including the Ford Ranges, the Sulzberger Ice Shelf, much of the Edward VII Peninsula, and the Shirase Coast region of the eastern Ross Ice Shelf. The investigators used radar sounding from a Twin Otter aircraft flying at varying altitudes, at least 300 m above the surface, at an air speed of about 130 knots. Time period: 25-27 December 1998. Flight tracks: 64. Track spacing: either 5.3 or 10.6 km. Sample points: 1,882,811. Sample spacing: ~10 m. Units: m. This layer is a reduced resolution grid (750 m) of linearly interpolated values.
nsidc-0119.ice_thickness.lowres
Antarctica
Cryosphere
Earth Science
Ice Sheets
Ice Sheet Thickness
Polar
0 0
1456 1456
-1897959 -951599
-805114 141246
-139.766629692109 -82.5998898477305
-80.0495162367056 -70.6381368646289
image/tiff
urn:ogc:def:crs:EPSG::3031
urn:ogc:def:crs:EPSG::4326
urn:ogc:def:crs:EPSG::3409
urn:ogc:def:crs:EPSG::3410
urn:ogc:def:crs:EPSG::3412
urn:ogc:def:crs:EPSG::3974
urn:ogc:def:crs:EPSG::3975
urn:ogc:def:crs:EPSG::3976
urn:ogc:def:crs:EPSG::32761
Young, D. A., S. D. Kempf, D. D. Blankenship, J. W. Holt, and D. L. Morse. 2008. Airborne laser altimetry of the Thwaites Glacier Catchment, West Antarctica Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/nsidc-0334.html. Accessed 05 December 2008. Background: This data set includes airborne altimetry collected over the catchment and main trunk of Thwaites Glacier, one of Antarctica's most active ice streams. The airborne altimetry comprises 35,000 line-kilometers sampled at 20 meters along track. The full dataset has an internal error of +/-20 cm; a primary subset has an error of +/-8 cm. We find a +20 cm bias with Geoscience Laser Altimeter System data over a flat interior region. These data will serve as an additional temporal reference for the evolution of Thwaites Glacier surface, as well as aid the construction of future high resolution Digital Elevation Models (DEM). Time Period: 10 December 2004 through 29 January 2005. Track Spacing: typically 15 km. Sample Points: 1,600,801. Sample Spacing: 20 m. Units: m surface elevation (vs. WGS84 ellipsoid). This layer is a reduced resolution grid (750 m) of linearly interpolated values.
Young, D. A., S. D. Kempf, D. D. Blankenship, J. W. Holt, and D. L. Morse. 2008. Airborne laser altimetry of the Thwaites Glacier Catchment, West Antarctica Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. Available at http://nsidc.org/data/nsidc-0334.html. Accessed 05 December 2008. Background: This data set includes airborne altimetry collected over the catchment and main trunk of Thwaites Glacier, one of Antarctica's most active ice streams. The airborne altimetry comprises 35,000 line-kilometers sampled at 20 meters along track. The full dataset has an internal error of +/-20 cm; a primary subset has an error of +/-8 cm. We find a +20 cm bias with Geoscience Laser Altimeter System data over a flat interior region. These data will serve as an additional temporal reference for the evolution of Thwaites Glacier surface, as well as aid the construction of future high resolution Digital Elevation Models (DEM). Time Period: 10 December 2004 through 29 January 2005. Track Spacing: typically 15 km. Sample Points: 1,600,801. Sample Spacing: 20 m. Units: m surface elevation (vs. WGS84 ellipsoid). This layer is a reduced resolution grid (750 m) of linearly interpolated values.
nsidc-0334.lowres
Antarctica
Cryosphere
Earth Science
Ice Sheets
Ice Sheet Elevation
Polar
0 0
961 961
-1702578 -885245
-980922 -163589
-132.065057552701 -80.8658557679777
-95.4883091331111 -72.4709817592022
image/tiff
urn:ogc:def:crs:EPSG::3031
urn:ogc:def:crs:EPSG::4326
urn:ogc:def:crs:EPSG::3409
urn:ogc:def:crs:EPSG::3410
urn:ogc:def:crs:EPSG::3412
urn:ogc:def:crs:EPSG::3974
urn:ogc:def:crs:EPSG::3975
urn:ogc:def:crs:EPSG::3976
urn:ogc:def:crs:EPSG::32761