Data Announcements

The Antarctic Glaciological Data Center (AGDC) at NSIDC is pleased to announce the release of a new data set, Temperature Profile of the West Antarctic Ice Sheet Divide Deep Borehole. This data set reports depth versus temperatures in the fluid-filled portion of the West Antarctic Ice Sheet Divide (WAIS–D) deep borehole (70 to 3328 meters depth). Data were acquired on December 5, 2011 and have been post-processed to convert resistance to temperature.

The Antarctic Glaciological Data Center (AGDC) at NSIDC is pleased to announce the release of a new data set, Standing Water Depth on Larsen B Ice Shelf. This data set addresses why surface melt water lakes on ice shelves and ice sheets are notably influential in triggering ice-shelf break-up and modulating seasonal ice flow, and are thus principle avenues by which environmental change can be transmitted to the ice sheets of Antarctica and Greenland.

The NASA IceBridge Merged Photon Counting Lidar/Profiler L4 Surface Slope and Elevations data set is now available from NSIDC. For documentation, and to access the data, see the IceBridge Lidar/Profiler L4 Surface Slope and Elevations data catalog page.

The NASA IceBridge ATM L4 Surface Elevation Rate of Change data set is now available from NSIDC. For documentation, and to access the data, see the IceBridge ATM L4 Surface Elevation Rate of Change landing page. Data Set DOI: https://doi.org/10.5067/BCW6CI3TXOCY

NASA IceBridge KT19 IR Surface Temperature data for 2013 Arctic are now available from NSIDC. For documentation, and to access the data, see the IceBridge KT19 IR Surface Temperature data catalog page.

The NASA IceBridge Sea Ice Freeboard, Snow Depth, and Thickness data product now includes 2009 and 2010 Antarctica data. For documentation, and to access the data, see the IceBridge Sea Ice Freeboard, Snow Depth, and Thickness catalog page.

The Antarctic Glaciological Data Center (AGDC) at NSIDC is pleased to announce the release of a new data set, WAIS Divide Laser Dust Logger Data. This data set consists of data from optical logs made at the WAIS Divide with a laser dust logger in clear ice at depths between 1403.58 meters and 3329.8 meters.

The Antarctic Glaciological Data Center (AGDC) at NSIDC is pleased to announce the release of a new data set, Interaction of Ice Stream Flow with Heterogeneous Beds. This data set consists of outputs of several numerical models simulating ice stream flow over undulated bed, interaction of ice stream flow, and subglacial and supraglacial hydraulic systems. All simulations are performed for idealized geometries using finite-element models.

NASA IceBridge POS/AV L1B Corrected Position and Attitude Data for 2013 Antarctica are now available from NSIDC. For documentation, and to access the data, see the IceBridge POS/AV L1B Corrected Position and Attitude Data catalog page.

The Arctic Sea Ice Freeboard and Thickness data set has been updated to add Lasers 1, 2A, 2B, 2C, 3A, 3B, 3C, 3J, and 3K. The update also includes GeoTIFF grids. For documentation, and to access the data, see the Arctic Sea Ice Freeboard and Thickness catalog page.

NSIDC is pleased to announce that the "Snow Melt Onset Over Arctic Sea Ice from SMMR and SSM/I-SSMIS Brightness Temperatures" data set has been updated to Version 3. Version 3 updates the record through the 2012 melt season utilizing brightness temperatures from the SSMIS instrument aboard the DMSP F17 satellite. Other processing changes are included in the Version 3 release which improve upon the Version 2 data. For a full description of these changes see the Version History.

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

NASA IceBridge DMS L0 Raw Imagery for 2013 Antarctica are now available from NSIDC. For documentation, and to access the data, see the IceBridge DMS L0 Raw Imagery catalog page.

Until recently, detailed bathymetric maps of the Arctic Ocean using modern sounding techniques were virtually non-existent. The Submarine Arctic Science Program (SCICEX) has helped to fill in these gaps over the last two decades and provide validation for the International Bathymetric Chart of the Arctic Ocean (IBCAO). The SCICEX program is pleased to announce the release of additional bathymetry of the Arctic Ocean from the 2011 and 2012 SCICEX campaigns.

The Global Lake and River Ice Phenology Database has had several updates and one new lake added to its inventory at the beginning of this year. First, data for the years 2006 to 2012 for the lakes in the North Temperate Region have been added. Second, an inconsistency was noticed in the data for the St. Regis Lower lake (lake code KMS16), so an additional record was added for this lake with a correction to the data (lake code CS1).

Using satellite data from the Nimbus Data Rescue Project, NSIDC scientists have estimated the location of the North and South Pole sea ice edges at various times during the late 1960s.

We are pleased to announce the release of the official NSIDC DAAC Soil Moisture Active Passive (SMAP) Data Collection. As the SMAP mission progresses, this collection will provide one convenient location to access SMAP satellite and validation data, tools and services, data version history, news, published research, and other resources. In addition, seven data sets are currently available from the SMAP Validation Experiment 2012 (SMAPVEX12). 

NSIDC now offers a new website, Satellite Observations of Arctic Change (SOAC) with interactive maps of the Arctic based on NASA satellite and related data.

Draft data provide much-needed validation for estimates of sea ice thickness from satellites and models. The Submarine Arctic Science Program (SCICEX) is pleased to announce the release of sea ice draft data from the 2011 SCICEX campaign. The data were acquired with upward looking sonar on US Navy submarines traveling under the Arctic Ocean in March and April of 2011. These data contribute to a larger effort to collect comprehensive physical, biological, and chemical data of the Arctic Ocean.

The ARC at NSIDC is losing its archivist. Allaina Wallace’s tenure at NSIDC started with the task of making safe a disordered collection that included treasures such as glass plate negatives from early expeditions to Glacier Bay in Alaska. Over nine years, she worked tirelessly with her fellow librarian Gloria Hicks to promote the collection through activities such as hosting, in 2012, the Polar Libraries Colloquy here in Boulder, and bringing a showing of Good Days on the Trail to the Boulder International Film Series.