Data Announcements

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 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.

The Landsat 8 Ice Speed of Antarctica (LISA), Version 1 data set, is now available at the National Snow and Ice Data Center. This data set, as part of the Global Land Ice Velocity Extraction from Landsat (GoLIVE) project, provides a compilation of Antarctic ice flow velocity mappings generated from pairs of Landsat 8 panchromatic images between 1 July 2013 to 30 April 2017. The data are provided at a gridded spatial resolution of 750 m.

The process of accessing data from NSIDC is evolving, and with it, the design and function of data set landing pages. The first improvements, released on March 6, reorganize the layout of these pages. The most noticeable change will be the consolidation of data download functionality in a single tab, as illustrated below.

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.

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 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 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 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 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 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 Application for Extracting and Exploring Analysis Ready Samples (AppEEARS) now includes the newest versions of select Soil Moisture Active Passive (SMAP) data sets from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). AppEEARS offers a simple and efficient way to subset SMAP data sets using spatial, temporal, and layer parameters for both point and area samples.

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).

NOAA@NSIDC is pleased to announce that a team at the University of Washington, Applied Physics Lab, led by Axel Schweiger, has corrected and reprocessed the sea ice draft data for the 2011 USS Connecticut and USS New Hampshire SCICEX campaigns and the 2014 USS New Mexico SCICEX campaigns. When the data were first released in 2015, the upward looking sonar data received from the submarine were the peak returns instead of the first returns of the signal. This can cause the sea ice draft data to be biased towards thinner ice.

The Multilayer Greenland Surface Temperature, Surface Albedo, and Water Vapor from MODIS 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 includes MODIS Collection 6 ice surface temperature, surface albedo, water vapor, and derived melt maps, for Greenland from 01 March 2000 to 31 December 2017. These data are provided at a spatial resolution of 0.78 km.

The MEaSUREs Greenland Image Mosaics from Sentinel-1A and -1B, Version 2 data set, available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) has been extended through September 2018. This data set, part of the Making Earth System Data Records for Use in Research Environments (MEaSUREs) Program, provides 6 and 12-day 50 m resolution image mosaics of the Greenland coastline and ice sheet periphery beginning in January 2015.

The SnowEx17 Boise State University Raw 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).