Data Announcements

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. 

Users of the Data Pool search and order feature should transition to NASA's Reverb | ECHO tool before the end of August. This feature of the Data Pool is being decommissioned. Reverb | ECHO provides the same subsetting, reformatting, and reprojecting services as the Data Pool interface. The Data Pool FTP site will remain available after the search and order interface is discontinued. Please contact NSIDC User Services with any questions.

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.

Recently recovered satellite images of Earth, captured between 23 April, 1969 to 21 January, 1970 by the Image Dissector Camera System onboard the Nimbus 3 satellite, are now available from NSIDC.

This data set contains sub-annually resolved ice core chemistry data from various sites on the Antarctic Ice Sheet during the US International Trans-Antarctic Scientific Expedition (US ITASE) deployments. Researchers conducted experiments approximately every 30 - 300 km looking for clues representing climatic conditions over the past 200-1000+ years. Ice cores obtained for the glaciochemical component of the US ITASE research were analyzed for soluble major ion content and in some cases trace elements.

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.

NmAVCS1H consists of black-and-white Advanced Vidicon Camera System images that were acquired by the Nimbus 1 satellite during August and September, 1964 and by Nimbus 2 from May to August, 1966. Learn more about the NSIDC DAAC Nimbus data rescue project data collection.

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.

Back in the 1960s, technology to process massive amounts of data and imagery did not exist. Advancements in technology now allow for the processing of film into a digital format. The Nimbus Data Rescue Project set out on a techno-archeological mission to convert data and images from the NASA Nimbus 1 and 2 satellites that were developed on film into a more manageable digital format.

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.

When monthly processing for the July 2013 update to the Sea Ice Index took place, the baseline climatological period for it and for the Arctic Sea Ice News and Analysis (ASINA) site changed from 22 years (1979-2000, inclusive) to 30 years (1981-2010, inclusive). Below is a summary of what changed and what did not change. Changes to the data:

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.