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

The Bootstrap Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS, Version 3 data set, available through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), has been updated through 31 December 2018. This data set consists of daily (provided every other day prior to July 1987) and monthly sea ice concentrations derived from brightness temperature measurements.

The High Mountain Asia LIS Model Terrestrial Hydrological Parameters, Version 1 data set is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set contains estimates of water, energy fluxes, and land surface states that were simulated using the Noah-Multiparameterization Land Surface Model (Noah-MP LSM) Version 3.6 within the NASA Land Information System (LIS) Version 7.2.

The IceBridge DMS L3 Ames Stereo Pipeline Photogrammetric DEM, Version 1 data set is now available in its entirety, from 16 October 2009 to 25 July 2017, at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC).

This data set represents a collection of digital elevation models (DEMs) obtained by processing Operation IceBridge DMS stereo images and lidar data using the NASA Ames Stereo Pipeline.

The IceBridge DMS L3 Ames Stereo Pipeline Orthorectified Images, Version 1 data set is now available in its entirety, from 16 October 2009 to 25 July 2017, at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC).

This data set represents a collection of orthorectified images obtained by processing Operation IceBridge DMS stereo images and lidar data using the NASA Ames Stereo Pipeline.

The IceBridge Radar L3 Tomographic Ice Thickness data set has been updated to version 2 at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). New in version 2, this data set presents ice thickness errors in addition to ice thickness measurements over areas of Greenland and Antarctica, two of the files contain bed elevation measurements, the files have been converted to netCDF4 from HDF5 and contain more robust metadata.

The Polar Pathfinder Daily 25 km EASE-Grid Sea Ice Motion Vectors, Version 4 data set is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). Version 4 of this data set includes improved filtering of the SSMI inputs, an update to the method for merging the input ice motion vectors, and an update to the averaging of the input buoy data. This data set provides daily and weekly sea ice motion vectors including browse images of the weekly data.

The AMSR-E/AMSR2 Unified L3 Daily 25 km Brightness Temperatures & Sea Ice Concentration Polar Grid Version 1 data set available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) has been reprocessed to correct an issue with the parameter designation (indexing) with the brightness temperature values in the B01 product. The file names for the data set have changed to reflect this update and are now designated with a B02 Product Maturity Code.

The AMSR-E/AMSR2 Unified L3 Daily 6.25 km Polar Gridded 89 GHz Brightness Temperatures, Version 1 data set available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) has been updated to reflect a new version. The data file names are now designated with a B02 Product Maturity Code.

The High Mountain Asia Gridded Glacier Thickness Change from Multi-Sensor DEMs, Version 1 data set is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set contains gridded thickness change measurements for approximately 650 Himalayan glaciers between 1975 and 2000, and 1040 Himalayan glaciers between 2000 and 2016. These data were derived from KH-9 HEXAGON and ASTER digital elevation models (DEMs) and are provided at a spatial resolution of 30 m.

The EASE-Grid Sea Ice Age, Version 4 data set is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set provides weekly estimates of sea ice age for the Arctic derived from remotely sensed sea ice motion and sea ice extent. The Version 4 input data are derived from the Polar Pathfinder Daily 25 km EASE-Grid Sea Ice Motion Vectors, Version 4 data set and the temporal coverage has been extended from 01 January 1984 to 31 December 2018.

The Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS Passive Microwave Data, Version 1 data set accessible from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) has been updated through 31 December 2018. This data set is generated from brightness temperature data and is designed to provide a consistent time series of sea ice concentrations spanning the coverage of several passive microwave instruments.

The SnowEx17 Radiometrics Surface-Based Radiometer Brightness Temperatures, Version 1 data set is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set consists of surface-based radiometer (SBR) brightness temperatures of the snow surface and vegetation for 37 locations across Grand Mesa, CO. The data were collected during the NASA 2017 SnowEx campaign from 14 February 2017 through 18 February 2017.

Interested in programmatic, scriptable access to data filtered by time or region of interest? While spatial and temporal data filtering and ordering can be done through applications such as NASA Earthdata Search, you may want to access data in a more programmatic way outside of a web interface. Our Application Programming Interface, or API, enables you to enter spatial and temporal filters into a single data access command, without the need to script against our data directory structure.

The MEaSUREs Greenland Ice Velocity: Selected Glacier Site Velocity Maps from InSAR, Version 1 data set, available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) has been updated with data through September 2018. Additional data for 2016 and 2017 were also added to the W68.60N grid.

The SnowEx17 CRREL Terrestrial Laser Scanner (TLS) Point Cloud, Version 1 data set is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC).

The Arctic Sea Ice Seasonal Change and Melt/Freeze Climate Indicators from Satellite Data, Version 1 data set is now available at the National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC).

The Sea Ice Trends and Climatologies from SMMR and SSM/I-SSMIS, Version 3 data set, available from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) has been extended through 31 December 2017. This update, representing Version 3.1 of the data set, now includes Version 3.1 of the “Bootstrap Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS” data set. The input data from “Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS Passive Microwave Data” remains the same.

The High Mountain Asia GFDL FLOR Modeled Extreme Precipitation Indices, Version 1 data set has been updated from a basic to a standard level of service at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). More extensive documentation and support options are now available. 

The High Mountain Asia TRMM-derived 3B42 Extreme Precipitation Indices, Version 1 data set has been updated from a basic to a standard level of service at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). More extensive documentation and support options are now available. 

The IceBridge Snow Radar L1B Geolocated Radar Echo Strength Profiles, Version 2 data set has been updated to include campaign data through 30 May 2018 at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC).