Data Announcements

NASA IceBridge Sea Ice Freeboard, Snow Depth, and Thickness Quick Look evaluation product data for the 2015 time period are now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set is an evaluation product containing derived geophysical data products retrieved over the Arctic sea ice cover from 2012 to 2015 using the IceBridge Airborne Topographic Mapper (ATM), Snow Radar, Digital Mapping System (DMS), and KT19 pyrometer.

The NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) is pleased to announce the release of the Polar Stereographic Valid Ice Masks Derived from National Ice Center Monthly Sea Ice Climatologies data set. These valid ice masks provide a way to remove spurious ice caused by residual weather effects and land spillover in passive microwave data, and are derived from the National Ice Center Arctic Sea Ice Charts and Climatologies data.

IceBridge DMS L1B Geolocated and Orthorectified Images for 2014 Antarctica are now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set contains Level-1B imagery taken from the Digital Mapping System (DMS) over Greenland and Antarctica. See the IceBridge DMS L1B landing page for more information. Data set DOI: https://doi.org/10.5067/OZ6VNOPMPRJ0

The NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) is pleased to announce that the Bootstrap Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS, Version 2 data set has been updated through 31 December 2014.

The Antarctic Glaciological Data Center (AGDC) at NSIDC is pleased to announce the release of a new data set, the WAIS Divide WDC06A Oxygen Isotope Record. This data set contains complete low resolution (0.25 to 100 cm) oxygen isotope data from the WAIS Divide Ice Core WDC06A, 0 to 3404.7 m depth. Also included is the WDC2014 timescale.

The NASA IceBridge LVIS POS/AV L1B Corrected Position and Attitude Data now include data for the Alaska 2014 Arctic Radiation - IceBridge Sea&Ice Experiment (ARISE) campaign. This data set contains georeferencing data from the Applanix 510 and 610 POS AV systems flown with the Land, Vegetation, and Ice Sensor (LVIS) over Greenland, Antarctica, and Alaska.

The NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) is pleased to announce that the Canadian Meteorological Centre (CMC) Daily Snow Depth Analysis data set has been updated with new data for 2014. This data set now includes daily and monthly snow depth analysis data for 01 August 1998 through 31 December 2014.

The Antarctic Glaciological Data Center (AGDC) at NSIDC is pleased to announce the release of a new data set, Fiber-Optic Distributed Temperature Sensing at Windless Bight. This data set contains ice shelf and ocean temperatures for Windless Bight, Antarctica, obtained from fiber-optic equipped moorings for Raman backscatter distributed temperature sensing (DTS).

The NASA IceBridge DMS L0 Raw Imagery data set now includes 2014 Antarctica data. This data set contains level zero imagery taken from the Digital Mapping System (DMS) over Antarctica and Greenland. For further information and to access the data from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), see the IceBridge DMS L0 Imagery landing page. Data Set DOI: https://doi.org/10.5067/UMFN22VHGGMH

NASA IceBridge LVIS-GH L1B Geolocated Return Energy Waveforms data are now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set contains laser altimetry energy waveform measurements taken by NASA's Land, Vegetation, and Ice Sensor - Global Hawk (LVIS-GH) over areas including Greenland and Antarctica. See the LVIS-GH L1B data landing page for more information.

NASA IceBridge LVIS-GH L2 Geolocated Surface Elevation Product data are now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set contains surface elevation measurements from NASA's Land, Vegetation, and Ice Sensor - Global Hawk (LVIS-GH) over areas including Greenland and Antarctica. See the LVIS-GH L2 data landing page for more information.

The Antarctic Glaciological Data Center (AGDC) at NSIDC is pleased to announce the release of a new data set, Reedy Glacier Exposure Ages, Antarctica Data. This data set contains site, sample, and analytical data from which to calculate cosmogenic nuclide-based exposure ages for glacial deposits adjacent to Reedy Glacier, Antarctica.

The NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) is pleased to announce the release of the EASE-Grid Sea Ice Age data set. This data set provides weekly estimates of sea ice age for the Arctic Ocean from remotely sensed sea ice motion and sea ice extent beginning in November 1978. The ice age data are derived from a number of passive microwave imagers, visible and infrared radiometers, drifting buoys, and wind data.

To meet a need for greater accuracy and higher resolution in ice concentration fields that are used to initialize an operational sea ice forecast model, a new sea ice concentration product has been developed by NOAA@NSIDC. Known as MASAM2, this sea ice concentration is a blend of two other daily sea ice data products. First is ice coverage from MASIE, the Multisensor Analyzed Sea Ice Extent product, at a 4 km grid cell size. Second are ice concentrations from the Advanced Microwave Scanning Radiometer 2 (AMSR2) at a 10 km grid cell size.

The NOAA@NSIDC program is pleased to announce that the Sea Ice Index data set has been updated with a reduced Arctic pole hole and improved Northern Hemisphere masks for removing spurious ice caused by residual weather effects. Beginning 01 January 2008, the data will include a pole hole that covers 0.029 million sq km rather than the previous pole hole of 1.19 million square kilometers. In addition, an error in the pole hole used for data from 01 July 1987 to 31 December 2007 was corrected.

The NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) is pleased to announce that the Near-Real-Time DMSP SSMIS Daily Polar Gridded Sea Ice Concentrations data set has been updated with a reduced pole hole for Northern Hemisphere data. In addition, this update includes improved Northern Hemisphere masks for removing residual weather effects. These two changes affect data beginning 01 January 2015.

The NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) is pleased to announce that the Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS Passive Microwave Data has been updated through 31 December 2014. In addition, SSMIS Northern Hemisphere data beginning 01 January 2008 has been replaced with data that includes a reduced pole hole covering 0.029 million sq km which is ten times smaller than the previous pole hole. This new pole hole will continue to be applied to new data going forward.

The Antarctic Glaciological Data Center (AGDC) at NSIDC is pleased to announce the release of a new data set, Firn Permeability and Density at WAIS Divide. This data set contains laboratory measurements of the density and permeability made from firn cores from the lock-in zone through pore close-off at the WAIS Divide and Megadunes sites.

The Antarctic Glaciological Data Center (AGDC) at NSIDC is pleased to announce the release of a new data set, Average Annual Layer Thickness of the WAIS Divide Ice Core from Visual Stratigraphy. This data set includes ~50 m averaged annual layer thicknesses down to 3403 m depth at the West Antarctic Ice Sheet (WAIS) Divide ice core as observed visually using diffuse transmitted light opposite a planed surface in a light-shielded booth in the core-processing line at the National Ice Core Lab in Denver, CO.

The Antarctic Glaciological Data Center (AGDC) at NSIDC is pleased to announce the release of a new data set, C-axis Fabric from Physical Properties Samples of the WAIS Divide Ice Core. This data set contains c-axis fabric measurements and grain area from the physical properties samples taken from the main West Antarctic Ice Sheet (WAIS) Divide ice core, WDC06A , Antarctica.