Data Announcements

NASA IceBridge ATM L1B Elevation and Return Strength data for 2014 Antarctica are now available from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set contains spot elevation measurements of Arctic and Antarctic sea ice, and Greenland, Antarctic Peninsula, and West Antarctic region ice surface acquired using the NASA Airborne Topographic Mapper (ATM) instrumentation. Data set DOI: https://doi.org/10.5067/19SIM5TXKPGT

Reprocessed NASA IceBridge Sea Ice Freeboard, Snow Depth, and Thickness Arctic data are now available from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). The IceBridge L4 Sea Ice Freeboard, Snow Depth, and Thickness (IDCSI4) product is informally regarded as Version 2 of the IceBridge Sea Ice Freeboard, Snow Depth, and Thickness (IDCSI2) product. Adding L4 (Level-4) to the data set name more accurately represents the data processing level. Currently, the reprocessed L4 data include Arctic campaigns from 2009 to 2012.

Due to a power failure on the Satélite de Aplicaciones Científicas (SAC)-D spacecraft on 08 June 2015, data from NASA’s Aquarius instrument are no longer being produced. For more information on this event, please refer to the official NASA announcement.

The Science Ice Exercise (SCICEX) Program, that uses U. S. Navy submarines to collect data about the Arctic Ocean, has been highlighted in two articles in the Spring 2015 issue of Witness the Arctic published by the Arctic Research Consortium of the United States (ARCUS).

NASA IceBridge ATM L2 Icessn Elevation, Slope, and Roughness data for 2014 Antarctica are now available from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set contains resampled and smoothed elevation measurements of Arctic and Antarctic sea ice, and Greenland, Antarctic Peninsula, and West Antarctic region land ice surface acquired using the NASA Airborne Topographic Mapper (ATM) instrumentation.

The Antarctic Glaciological Data Center (AGDC) at NSIDC is pleased to announce the release of a new data set, WAIS Divide Microparticle Concentration and Size Distribution, 0-2400 ka. These data describe raw dust microparticle data for the WAIS Divide deep core, WDC06A, from the surface to 577 m.

NASA IceBridge Narrow Swath ATM L1B Elevation and Return Strength data for 2014 Antarctica are now available from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set contains spot elevation measurements of Greenland, Arctic, and Antarctic sea ice acquired using the NASA Airborne Topographic Mapper (ATM) 4CT3 narrow scan instrumentation. Data set DOI: https://doi.org/10.5067/CXEQS8KVIXEI

NASA IceBridge BedMachine Greenland Version 2 data are now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set contains bed topography beneath the Greenland Ice Sheet based on mass conservation derived from airborne radar tracks and satellite radar for data collected between 1993 and 2014. Data set DOI: https://doi.org/10.5067/AD7B0HQNSJ29

NASA IceBridge Photon Counting Lidar L1B Unclassified Geolocated Photon Elevations data for 2011 Antarctica are now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set contains geolocated elevations captured over Antarctica using the Sigma Space photon counting lidar. Data set DOI: https://doi.org/10.5067/U3E4Q5WWVSP9

NASA IceBridge UAF Lidar Scanner L1B Geolocated Surface Elevation Triplets data for 2014, and additional data for 2009 through 2013, are now available from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set contains scanning laser altimetry data points of Alaska Glaciers acquired using the airborne University of Alaska Fairbanks (UAF) Glacier Lidar system. Data set DOI: https://doi.org/10.5067/AATE4JJ91EHC

The Antarctic Glaciological Data Center (AGDC) at NSIDC is pleased to announce the release of a new data set, the Borehole Temperature Measurements in WDC05A in January 2008 and January 2009. This data set includes borehole temperature measurements performed in January 2008 and January 2009 at the West Antarctic Ice sheet divide from the 300 m hole WDC05A.

The Antarctic Glaciological Data Center (AGDC) at NSIDC is pleased to announce the release of a new data set, Surface Temperature Reconstruction from Borehole Temperature Measurement in WDC05A. This data set shows the modeled surface temperature reconstruction from an inversion of the 300 m WDC05A borehole at the West Antarctic Divide Ice core site.

NOAA@NSIDC is pleased to announce that the MASIE daily 4 km sea ice extent product has resumed and all gaps in the data from the November 2014 to April 2015 outage have been back filled. In addition, all sea ice extent values for the entire time series have been made available via one comma separated value file: masie_allyears_extent_sqkm.csv. There is one value per day for the entire Arctic, as well as one for each of the 16 MASIE regions.

The Antarctic Glaciological Data Center (AGDC) at NSIDC is pleased to announce the release of a new data set, Snowpit Chemistry - Methods Comparison, WAIS Divide, Antarctica. This data set consists of measurements of a suite of trace elements in snow pit samples from WAIS Divide, Antarctica.

The Nimbus Data Rescue Project at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NASA DAAC) has updated its remapped Image Dissector Camera System data sets with newly digitized imagery from the Nimbus 4 satellite.

The NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) is pleased to announce that users can now obtain Version 6 (Collection 6) MODIS sea ice data. The MODIS Version 6 sea ice extent and ice surface temperature algorithms and products are the same as Version 5; however, Version 6 updates to algorithm inputs—in particular, the L1B calibrated radiances, land and water mask, and cloud mask products—have improved the sea ice outputs. For information about forward and reprocessing schedules, see MODIS collection.

NOAA@NSIDC is pleased to announce that the Google Earth files for the minimum and maximum annual sea ice extents have been updated. The September 2014 minimum KMZ file has been updated to use final instead of near-real-time data, and the March 2015 maximum KMZ file has been added to the time series. To view these, and other, Google Earth files, visit the NSIDC Data on Google Earth web page.

NOAA@NSIDC is pleased to announce the addition of almost 1200 photographs to the Glacier Photograph Collection. This collection was compiled by the World Glacier Monitoring Service (WGMS) who collect and disseminate standardized observations on glacier fluctuations such as length, area, volume, and mass. This special collection focuses on photographs of glaciers for which long fluctuation series are available, some of them dating back to the 18th century.

Beginning in March 2015, processing at NSIDC for passive-microwave-based sea ice products was updated to use monthly masks based on the U.S. National Ice Center's long-term, 1972 to 2007, manual sea ice analyses to filter out likely false ice detections. These masks are now available from the NASA NSIDC DAAC as a stand-alone data set: Polar Stereographic Valid Ice Masks Derived from National Ice Center Monthly Sea Ice Climatologies.

The NASA IceBridge-related CryoSat-2 Sea Ice Freeboard, Thickness, and Snow Depth Quick Look evaluation product now includes data for the March 2015 time period, available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set is an experimental sea ice thickness data set containing derived geophysical data products retrieved over the Arctic sea ice cover.