Data Announcements

The IceBridge Watson-Gyro Fluxgate Magnetometer L1B Time-Tagged Magnetic Field, Version 1 data set is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) from 29 December 2008 through 14 January 2013. This data set contains time-registered Level-1B field readings taken over Antarctica using the Watson-Gyro Fluxgate Magnetometer instrument. The data were collected as part of Operation IceBridge funded aircraft survey campaigns.

The High Mountain Asia GFDL FLOR Modeled Daily Precipitation for Extreme Analysis, 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 three climate simulations of daily precipitation over the Himalayan region for summer and winter: two 30-member ensemble simulations from 1961-2000 and 2061-2100, and one present-day climate simulation from 1982 to 2017 forced with observed sea surface temperatures, air temperatures, and winds.

NOAA@NSIDC is pleased to announce that the Sea Ice Index has been updated from near-real-time data to final data for the time period 01 January 2018 through 31 December 2018. Initially, when the Sea Ice Index is first processed, it uses a near-real-time (NRT) sea ice concentration product as it input. This NRT product can contain missing data and has less quality control procedures applied to it than the final sea ice concentration input product provided by NASA Goddard. However, the final input product often lags behind the present by approximately a year.

The DMSP SSM/I-SSMIS Daily Polar Gridded Brightness Temperatures, Version 5 data set is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set contains daily gridded brightness temperatures derived from the Special Sensor Microwave/Imager (SSM/I) sensor aboard the Defense Meteorological Satellite Program (DMSP) F8, F11, and F13 platforms and the Special Sensor Microwave Imager/Sounder (SSMIS) sensor aboard the DMSP F17 and F18 platforms.

The Snow Data Assimilation System (SNODAS), Version 1 data set, accessible through the NOAA@NSIDC program at the National Snow and Ice Data Center (NOAA@NSIDC), was updated to correct for an extra “./“ in some of the data file paths. Users accessing this data set through a script may need to update their scripts to account for this correction. In addition, the filename extensions for the uncompressed header files (.hdr) have been renamed to text (.txt) format.

On the evening of 19 June 2019, SMAP went into safe mode and data collection was disrupted. SMAP is currently in standby mode. The task team is in communication with the satellite and working to restore normal operations. On 02 July 2019 the Non-volatile Memory (NVM) Parameter Management (NPM) backup partition was successfully recovered. The attempt to recover additional partitions will continue while SMAP is in standby mode. NSIDC will continue to provide updates as we learn more information and gain a better understanding of the timeframe for resuming data collection.

The NASA Jet Propulsion Laboratory (JPL) and the National Snow and Ice Data Center (NSIDC) are pleased to announce the ITS_LIVE Regional Glacier and Ice Sheet Surface Velocities, Beta Version data sets are now accessible through the JPL and NSIDC.

On the evening of 19 June 2019, SMAP went into safe mode and data collection was disrupted. A task team has made progress in communicating with the satellite and diagnosing the malfunction. While they continue to work to return SMAP to normal operations, all instruments remain off. Currently, SMAP has been returned to standby mode with nominal nadir pointing and spinning antenna. Data collection has not restarted.

The DMSP SSM/I-SSMIS Pathfinder Daily EASE-Grid Brightness Temperatures, Version 2 data set, accessible through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), has been extended through 03 April 2019. This data set contains brightness temperatures derived from the Special Sensor Microwave/Imager (SSM/I) and the Special Sensor Microwave Imager/Sounder (SSMIS) instruments. The spatial resolution is 25 km for all channels; the 85 and 91 GHz channels are also provided at a 12.5 km resolution.

The Arctic Sea Ice Seasonal Change and Melt/Freeze Climate Indicators from Satellite Data, Version 1 data set, accessible through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), has been updated from a basic to a standard level of service. Please review our Levels of Service (LoS) page for more information.

On the evening of 19 June 2019, the SMAP satellite went into safe mode. Subsystems are investigating the cause and possible solutions. In the meantime, all instruments are shutdown and there is no science data collection. While SMAP remains in safe mode, generation of the model-based Level-4 product will continue, but the Level-4 data will not be informed by contemporaneous SMAP observations. As NSIDC gets updates, we will post more details on the state of the spacecraft and data for all product levels.

NOAA@NSIDC and the University of Colorado (CU) Boulder Libraries are pleased to announce that the Glacier Photograph Collection (GPC) has recently been updated with over 8,000 new historical images, collected from 1883 through 2012. The GPC holds digital images of glaciers from around the world, most of which were digitized by scanning prints or glass negatives, but many that also originated in digital form. Some of the images date back to the mid-19th century and provide an historical reference for glacier extent.

The ATLAS/ICESat-2 L3A Ocean Surface Height, Version 1 data set from the Ice, Cloud, and land Elevation Satellite-2 (ICESat-2) mission is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set contains along-track sea surface heights at variable length scales over cloud-free regions. Estimates of height distributions, surface roughness, surface slope, and apparent reflectance are also provided.

Two additional High Mountain Asia data sets are now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). The High Mountain Asia Landslide Catalog, Version 1 data set includes landslide event locations and characteristics from February 1956 to December 2018. The High Mountain Asia Langtang Snow Properties, Version 1 data set contains surface area measurements from the Yala Glacier, Nepal on 23-24 April 2018.

The Snow Melt Onset Over Arctic Sea Ice from SMMR and SSM/I-SSMIS Brightness Temperatures, 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 includes yearly snow melt onset dates derived from Scanning Multichannel Microwave Radiometer (SMMR), Special Sensor Microwave/Imager (SSM/I), and the Special Sensor Microwave Imager/Sounder (SSMIS) brightness temperature measurements.

New data access options are available for the MEaSUREs Greenland Ice Mapping Project (GIMP) 2000 Image Mosaic, Version 1 data set, accessible through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). The download location for this data set has changed, and both spatial and temporal searching are now available through Earthdata Search.

The first data sets from NASA’s Ice, Cloud, and land Elevation Satellite-2 (ICESat-2) are now available from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC).

Multiple Level-1B, Level-2, and Level-3A data sets from the Ice, Cloud, and land Elevation Satellite-2 (ICESat-2) mission are now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). These data sets provide backscatter profiles; geolocated photon data; atmospheric layer characteristics; and geolocated surface elevations for land ice, sea ice, vegetation and land, and inland water. The data are available beginning 13 October 2018 and may have gaps in coverage due to processing lag times.

The MEaSUREs Greenland Monthly Ice Sheet Velocity Mosaics from SAR and Landsat, Version 1 and MEaSUREs Greenland Quarterly Ice Sheet Velocity Mosaics from SAR and Landsat, Version 1

The Quicklook Arctic Weekly EASE-Grid Sea Ice Motion Vectors, 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 is the quicklook version of the Polar Pathfinder Daily 25 km EASE-Grid Sea Ice Motion Vectors data product. It contains weekly sea ice motion vectors, as well as browse images, from 01 January 2019 through the present.