Data Announcements

NOAA@NSIDC is pleased to announce that the Daily Great Lakes Ice Concentration, 1973 Onward, Version 1 data set is now available through the 2023 ice season. In addition, shapefiles for the 2003 ice season through the 2023 ice season have been added as a format of the data set. This data set consists of daily gridded lake ice concentration for the Laurentian Great Lakes from the NOAA Great Lakes Environmental Research Laboratory (GLERL).

The Randolph Glacier Inventory - A Dataset of Global Glacier Outlines, Version 7 dataset is now available through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set is a global set of glacier outlines intended as a snapshot of the world’s glaciers beyond the ice sheets. It provides a single outline for each glacier at approximately the year 2000 as well as a set of attributes and other relevant auxiliary information.

The MEaSUREs Global Record of Daily Landscape Freeze/Thaw Status, Version 5 data set, available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), has been updated through 31 December 2021. The F/T status is now provided as a single Earth System Data Record derived from SMMR, SSM/I, and SSMIS from 1979 to 2020, and AMSR2 from 2021 onwards. The separate AMSR-E–AMSR2 data record (2002 - 2020) has been discontinued.

The Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS Passive Microwave Data, Version 2 data set, available from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), has been updated through  31 March 2023. 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.

Due to planned maintenance aboard the SMAP spacecraft today September 14, 2023 data loss and latency impact are expected while the instrument is in safe-mode. Operations are estimated to resume as normal by tomorrow September 15, 2023. We apologize for any inconvenience.

The SnowEx20 Boise River Basin SnowMicroPen (SMP) Raw Penetration Force Profiles, Version 1 (SNEX20_BR_BSU_SMP) data set is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set contains raw penetration force profiles from the SnowEx 2020 time series campaign in the Boise River Basin in Idaho. Temporal coverage spans from 18 December 2019 to 24 January 2020.

The ATLAS/ICESat-2 L3B Monthly 3-Month Gridded Dynamic Ocean Topography (ATL23), Version 1 data set is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC).

Version 3 of the ATLAS/ICESat-2 L3B Mean Inland Surface Water Data (ATL22) data set, accessible through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), has been released.

The High Mountain Asia 5 Arc-Minute Hydrological Flow Direction for the Headwaters of the Amu Darya and Indus River Basins, 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 hydrological flow directions at 5 arc-minute resolution for the headwaters of the Amu Darya and Indus River basins. The domain spans parts of Afghanistan, Tajikistan, Kyrgyzstan, and Pakistan.

The SMAPVEX19-22 Millbrook Airborne Lidar and SMAPVEX19-22 Massachusetts Airborne Lidar, Version 1 data sets, are now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). These lidar measurements were collected in April and August 2022 in the vicinity of Millbrook, NY, and Petersham, MA during the SMAPVEX19-22 campaign.

NOAA@ NSIDC is pleased to announce that MASAM2: Daily 4 km Arctic Sea Ice Concentration, Version 2 is now available. MASAM2 is a blend of the 4 km Multisensor Analyzed Sea Ice Extent – Northern Hemisphere (MASIE-NH) ice extent product and a 10 km AMSR2 sea ice concentration product. With Version 2, the data set provides ice concentration values that may range between 40 percent and 100 percent everywhere that the MASIE product has detected ice.

Version 3 of the ATLAS/ICESat-2 L3B Monthly Gridded Dynamic Ocean Topography (ATL19) data set, accessible through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), has been released.  This data set contains monthly gridded dynamic ocean topography, derived from the along-track ATLAS/ICESat-2 L3A Ocean Surface Height product (ATL12).  Temporal coverage currently spans 14 October 2018 to 01 April 2023 and is updated regularly.  Spatial coverage is global.  Changes with

NOAA@NSIDC is pleased to announce that the Arctic Sea Ice Concentration and Extent from Danish Meteorological Institute Sea Ice Charts, 1901-1956, Version 1 data set has been updated to Version 1.1. Version 1.1 adds quarter-degree gridded fields of sea ice concentration in NetCDF format to the existing shapefile and image representations of ice concentration from the Danish chart series.

The Northern Hemisphere EASE-Grid 2.0 Weekly Snow Cover and Sea Ice Extent, Version 4 data set, accessible through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), has been updated through 1 January 2023. This data set contains snow cover and sea ice extent derived from SMMR and DMSP-F8, -F11, -F13, and -F17 SMM/I and SSMIS brightness temperature measurements. These data are provided on the 25 km Northern Hemisphere EASE-Grid 2.0.

Version 6 of the ATLAS/ICESat-2 L3B Slope-Corrected Land Ice Height Time Series (ATL11) data set, accessible through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), is now available.

The SMAP Radiometer Twice-Daily rSIR-Enhanced EASE-Grid 2.0 Brightness Temperatures, Version 2 data set, accessible through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), has been updated to include new data from 1 May 2021 to 31 December 2022. This data set contains twice-daily, enhanced-resolution brightness temperature data derived from the SMAP radiometer. Data set DOI: https://doi.org/10.5067/YAMX52BXFL10

The ATLAS/ICESat-2 L3B Daily and Monthly Gridded Sea Ice Freeboard (ATL20), Version 4 and ATLAS/ICESat-2 L3B Daily and Monthly Gridded Polar Sea Surface Height Anomaly (ATL21), Version 3 data sets, accessible through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), have been released.

The High Mountain Asia CMIP6 Monthly and Yearly Water Balance Projections, 2016-2099 for Parts of Afghanistan, Tajikistan, Kyrgyzstan, and Pakistan, Version 1 data set is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC).

The MEaSUREs Polar EASE-Grid 2.0 Daily 6 km Land Freeze/Thaw Status from AMSR-E and AMSR2, Version 2 data set, available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), has been updated through 31 December 2021. The daily GeoTIFF files from 2002 to 2020 have been replaced. Although the data in these files has not been modified, the file metadata has been updated to comply with a new standard for all daily GeoTIFF files, starting with the 2021 temporal coverage extension.

On 7 July 2023 the FOT (Flight Operation Team) transitioned fully to LOOps (Light-Out-Operations) following successful testing and Ops Readiness Review. Estimated data acquisitions are expected to remain above the mission data capture guideline of 95%. Beginning 7 July 2023 onward, all Terra, Aqua, and combined Terra+Aqua MODIS Version 6.1 data products will be directly impacted by these occurrences of non-recoverable data loss.