Data set updates: New NASA Earthdata Cloud access option for SMAP NRT collection now available

The Near Real-time SMAP L1B Radiometer Half-Orbit Time-Ordered Brightness Temperatures, Version 105, and the Near Real-time SMAP L2 Radiometer Half-Orbit 36 km EASE-Grid Soil Moisture, Version 107, are now available in the NASA Earthdata Cloud from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). Earthdata Cloud, NASA’s archive of Earth observations, is hosted in Amazon Web Services (AWS). These data sets will be available via the HTTPS File System until 28 October 2025. If you use this archive, we encourage you to update direct download workflows and scripts to use the new Earthdata Cloud access URLs.

The legacy HTTPS File System URL on the data set landing page has been replaced with the Earthdata Cloud HTTPS File System URL. However, you can still find the legacy HTTPS URL in our Programmatic Data Access Guide at https://nsidc.org/data/user-resources/help-center/programmatic-data-access-guide until 28 October 2025. 

These datasets will continue to be available via the persistent primary archive, titled NASA LANCE HTTPS File System, for the immediate future. If data latency is a concern, we recommend continuing to access data from the NASA LANCE HTTPS File System URLs rather than the newly available Earthdata Cloud URLs. This is because the NASA LANCE HTTPS File System currently offers slightly better latency. In late 2025 or early 2026, the Earthdata Cloud and NASA LANCE HTTPS File System latencies will match, at which point we will retire the NASA LANCE HTTPS File System and notify you of this change.

The NSIDC DAAC User Services Office provides support for direct data download from the Earthdata Cloud HTTPS and basic access to our AWS Simple Storage Service (S3) buckets. For more details on these access options, please see: https://nsidc.org/data/user-resources/help-center/nasa-earthdata-cloud-data-access-guide
  
For a complete listing of data sets, visit the SMAP data page at: https://nsidc.org/data/smap/data