NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC)
Data Updates
NASA IceBridge Ku-Band Radar Level-1B Geolocated Radar Echo Strength Profiles for 2012 Arctic are now available from NSIDC. For documentation, and to access the data, see the IceBridge Ku-Band Radar L1B catalog page.
Global, monthly land surface emissivity data from the Advanced Microwave Scanning Radiometer - Earth Observing System (AMSR-E) are now available at NSIDC. These data complement existing passive microwave measurements from the Special Sensor Microwave Imager (SSM/I) and Advanced Microwave Sounding Unit (AMSU) by offering land emissivity from 18.7, 23.8, 36.5, and 89.0 GHz, as well from two lower frequencies: 6.9 and 10.65 GHz. According to Principal Investigator, Hamidreza Norouzi, observations from the lower C- and X-band frequencies are able to penetrate deeper into the soil layer.
NASA IceBridge Snow Radar L1B Geolocated Radar Echo Strength Profiles for 2012 Greenland are now available from NSIDC. For documentation, and to access the data, see the IceBridge Snow Radar L1B catalog page.
NASA IceBridge DMS Level-0 Raw Imagery for Arctic 2013 are now available from NSIDC. For documentation, and to access the data, see the IceBridge DMS L0 data set landing page.
Version 2 of the IceBridge MCoRDS Level-3 Gridded Ice Thickness, Surface, and Bottom data is now available from NSIDC. For data set documentation, details on changes in Version 2, and access to the data, see the IceBridge MCoRDS L3 data set landing page.
NSIDC is receiving new data from MEaSUREs, NASA's Making Earth System Data Records for Use in Research Environments Program. These offerings will expand NSIDC's current MEaSUREs roster with new data sets related to snow, sea ice, Greenland surface melt, and more.
Version 3 reprocessing is now complete for the AMSR-E/Aqua Level-2A Global Swath Spatially-Resampled Brightness Temperatures (AE_L2A) data set. Changes to the Version 3 algorithm for these data include:
NASA IceBridge POS/AV L1B Corrected Position and Attitude Data for Arctic 2013 are now available from NSIDC. For documentation, and to access the data, see the IceBridge POS/AV L1B data set landing page.
On 09 July 2013, the 2010 and 2011 Antarctica data were replaced with V01.1. For documentation, and to access data, see the IceBridge HiCARS 2 L2 Geolocated Ice Thickness data set landing page.
On 08 July, 2013, V01.1 data were replaced by V01.2. Data fields are revised in V01.2. For documentation, and to access data, see the IceBridge HiCARS 1 L2 Geolocated Ice Thickness data set landing page.
On 05 July, 2013, the V01 2009, 2010, and 2011 Antarctica data were replaced by V01.1. In the V01.1 data files, magnetic base corrections are removed and fields in the data files are re-ordered. For documentation, and to access data, see the IceBridge Geometrics 823A Cesium Magnetometer L2 Geolocated Magnetic Anomalies data set landing page.
On 05 July, 2013, the V01 2009, 2010, and 2011 Antarctica data were replaced by V01.1. V01.1 data files are revised in the Seconds field and the Laser Derived Surface field. For documentation, and to access data, see the IceBridge Riegl Laser Altimeter L2 Geolocated Surface Elevation Triplets data set landing page.
V01 data were replaced by V01.1. V01.1 data files include UTC timestamps and re-ordered fields. For documentation, and to access data, see the IceBridge BGM-3 Gravimeter L2 Geolocated Free Air Anomalies data set landing page.
On 31 January 2013 the ICESat Project Science Team announced that a correction to ICESat surface elevation data products is necessary due to an error in the range determination from transmit-pulse reference selection (centroid vs. Gaussian, G-C). Correction files and correction programs in FORTRAN and IDL are available via FTP. For more information about the findings and corrections please see Correction to ICESat Data Product Surface Elevations.
Updated Version 3 brightness temperature data are now available for the AMSR-E/Aqua Level-2A Global Swath Spatially-Resampled Brightness Temperatures (AE_L2A) data set. Changes to the Version 3 algorithm for these data include:
NASA IceBridge Narrow Swath ATM L1B Qfit Elevation and Return Strength data for 2012 Antarctica are now available from NSIDC. For documentation, and to access data, see the IceBridge Narrow Swath ATM L1B Qfit Elevation and Return Strength catalog page.
The NASA IceBridge CAMBOT L1B Geolocated Images for 2012 Antarctica are now available from NSIDC. For documentation, and to access data, see the IceBridge CAMBOT L1B Geolocated Images data set landing page.
The NASA IceBridge ATM L2 Icessn Elevation, Slope, and Roughness data for 2012 Antarctica are now available from NSIDC. For documentation, and to access data, see the IceBridge ATM L2 Icessn Elevation, Slope, and Roughness catalog page.
NASA IceBridge MCoRDS L1B Geolocated Radar Echo Strength Profiles 2012 Antarctica data are now available at NSIDC. For documentation, and to access data, see the IceBridge MCoRDS L1B Geolocated Radar Echo Strength Profiles data set landing page.
The NASA IceBridge Sea Ice Freeboard, Snow Depth, and Thickness Quick Look April 2013 Arctic evaluation product data are now available from NSIDC. The data are from flights completed during 22, 24, and 25 April 2013. See the NASA IceBridge Sea Ice Freeboard, Snow Depth, and Thickness Quick Look data set landing page for more information.