NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC)

Notice to Users of AMSR-E, ICESat/GLAS, IceBridge, MODIS and NISE Data.

The FTP location for accessing AMSR-E, ICESat/GLAS, IceBridge, MODIS, and NISE data changed in October from n4ftl01u.ecs.nasa.gov to n5eil01u.ecs.nsidc.org. Redirects that were previously put in place for users connecting to n4ftl01u.ecs.nasa.gov were removed. Users connecting to our FTP through a script or through an FTP download program should change the host name to n5eil01u.ecs.nasa.gov in order to continue retrieving data.

NASA IceBridge Narrow Swath ATM L1B Elevation and Return Strength data for 2013 Arctic are now available from NSIDC. For documentation, and to access the data, see the IceBridge Narrow Swath ATM L1B Elevation and Return Strength data catalog page.

NASA Aquarius Level-2 and Level-3 Soil Moisture data are now available from NSIDC. Learn more about the NSIDC DAAC Aquarius data collection.

NASA IceBridge ATM L1B Elevation and Return Strength data for 2013 Arctic are now available from NSIDC. For documentation, and to access the data, see the IceBridge ATM L1B Elevation and Return Strength data catalog page.

NASA IceBridge WISE L2 Ice Thickness and Surface Elevation data for 2013 Alaska are now available from NSIDC. This data set contains depth sounder measurements of elevation, surface, bottom, and thickness for Alaska taken from the Warm Ice Sounding Explorer (WISE). For documentation, and to access the data, see the IceBridge WISE L2 Ice Thickness and Surface Elevation landing page. Data Set DOI: https://doi.org/10.5067/0ZBRL3GY720R

NASA IceBridge CMG 1A Dynamic Gravity Meter Time-Tagged L1B Vertical Accelerations data for 2012 Antarctica are now available from NSIDC. For documentation, and to access the data, see the IceBridge CMG 1A Dynamic Gravity Meter L1B data catalog page.

NSIDC is pleased to announce that the Polar Pathfinder Daily 25 km EASE-Grid Sea Ice Motion Vectors data set has been updated to Version 2. Version 2 includes updated data through 31 December 2012 for both hemispheres.

NASA IceBridge DMS L1B Geolocated and Orthorectified Images for 2013 Arctic are now available from NSIDC. For documentation, and to access the data, see the IceBridge DMS L1B data set landing page.

Reprocessing is complete and updated data are now available through 31 December 2012 for all Sea Ice Trends and Sea Ice Trends and Climatologies from SMMR and SSM/I-SSMIS data sets. With this update, the following changes have been implemented:

Investigators Eric Rignot, Jeremie Mouginot, and Bernd Scheuchl have added a 450 m resolution map to their "MEaSUREs InSAR-Based Antarctica Ice Velocity Map" data set. NSIDC offers these data as part of NASA's Making Earth System Data Records for Use in Research Environments (MEaSUREs) program.

Visit the data set landing page for more information and to obtain the data.

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 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 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.