G02135 Fetterer, F., K. Knowles, W. Meier, and M. Savoie. 20021205 Sea Ice Index Boulder, Colorado USA NSIDC: National Snow and Ice Data Center http://nsidc.org/data/g02135.html http://dx.doi.org/10.7265/N5QJ7F7W The Sea Ice Index provides a quick look at sea ice changes in spatial and historical context, and gives a consistent, up-to-date source of sea ice extent and sea ice concentration values and images. The NSIDC Near-Real-Time DMSP SSM/I Daily Polar Gridded Sea Ice Concentrations and the Sea Ice Concentrations from Nimbus-7 SSMR and DMSP SSM/I Passive Microwave Data data sets are used to generate the monthly records of sea ice extent and sea ice concentration for the Arctic and Antarctica from satellite passive microwave data. Data files tabulate monthly mean extent and area, in millions of square kilometers, by year for a given month. Plots of monthly sea ice extent anomalies with trend lines and significance intervals are available. Monthly images show sea ice extent (with an outline of the median extent for that month for comparison), sea ice concentration, trends in sea ice concentration, and anomalies in sea ice concentration. Anomalies and median extent are calculated using a reference period of 1979 through 2000. Daily images of sea ice extent and concentration, along with a time series plot of extent for the most recent four months, can be viewed and downloaded on the data product site but are not archived. Some products are available as GIS compatible shapefiles and KML files. The Browse Image Spreadsheet Tool (BIST) can be used for animated images and for displaying archived images of extent and trends side by side, to make it easy to compare images from different years and months. Data are stored in ASCII text, Portable Network Graphics (PNG), Keyhole Markup Language (KML), and Geospatial Vector Data format and are available from November 1978 to present via FTP or the Sea Ice Index Web site. scientific research Fetterer, F., K. Knowles, W. Meier, and M. Savoie. 20021205 Sea Ice Index Boulder, Colorado USA NSIDC: National Snow and Ice Data Center http://nsidc.org/data/docs/noaa/g02135_seaice_index/index.html 19790101 Unknown publication date In work Unknown -180 180 90 -90 NASA Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > Cryosphere > Sea Ice > Ice Extent EARTH SCIENCE > Cryosphere > Sea Ice > Ice Growth/Melt EARTH SCIENCE > Cryosphere > Sea Ice > Reflectance EARTH SCIENCE > Cryosphere > Sea Ice > Sea Ice Concentration EARTH SCIENCE > Oceans > Sea Ice > Ice Extent EARTH SCIENCE > Oceans > Sea Ice > Ice Growth/Melt EARTH SCIENCE > Oceans > Sea Ice > Reflectance EARTH SCIENCE > Oceans > Sea Ice > Sea Ice Concentration None NASA Global Change Master Directory (GCMD) Instrument Keywords SMMR > Scanning Multichannel Microwave Radiometer SSM/I > Special Sensor Microwave/Imager NASA Global Change Master Directory (GCMD) Platform Keywords DMSP > Defense Meteorological Satellite Program NIMBUS-7 SATELLITES ISO 19115 Topic Categories climatologyMeteorologyAtmosphere oceans None NOAA Sea Ice Sea Ice Anomalies Sea Ice Conditions Sea Ice Trends NASA Global Change Master Directory (GCMD) Location Keywords Continent > Antarctica Geographic Region > Arctic 8 NASA Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > Cryosphere > Sea Ice > Ice Extent NASA Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > Cryosphere > Sea Ice > Ice Growth/Melt NASA Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > Cryosphere > Sea Ice > Reflectance NASA Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > Cryosphere > Sea Ice > Sea Ice Concentration NASA Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > Oceans > Sea Ice > Ice Extent NASA Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > Oceans > Sea Ice > Ice Growth/Melt NASA Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > Oceans > Sea Ice > Reflectance NASA Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > Oceans > Sea Ice > Sea Ice Concentration None None NSIDC User Services National Snow and Ice Data Center mailing
CIRES, 449 UCB
University of Colorado
Boulder CO 80309-0449 USA 1 303 492-6199 x 1 303 492-2468 x nsidc@nsidc.org National Snow and Ice Data Center NSIDC User Services mailing
National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
Boulder CO 80309-0449 USA 1 303 492-6199 1 303 492-2468 nsidc@nsidc.org G02135 NSIDC cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NSIDC makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty. ASCII Text ftp://sidads.colorado.edu/DATASETS/NOAA/G02135/ None ESRI Shapefiles ftp://sidads.colorado.edu/DATASETS/NOAA/G02135/ None PNG ftp://sidads.colorado.edu/DATASETS/NOAA/G02135/ None 20130307 20130307 NSIDC User Services National Snow and Ice Data Center mailing
National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
Boulder CO 80309-0449 USA 1 303 492-6199 1 303 492-2468 nsidc@nsidc.org FGDC Content Standard for Digital Geospatial Metadata: Extensions for Remote Sensing Metadata FGDC-STD-012-2002