The NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) will add 26 data sets from the SMMR and SSM/I-SSMIS collection to NASA Earthdata Cloud on 8 April 2025. Earthdata Cloud is NASA’s archive of Earth observations, hosted in Amazon Web Services (AWS). The Earthdata Cloud HTTPS data access URL will be available from each data set landing page using the HTTPS File System link under Data Access & Tools after the publication date.
The URL for access to the legacy HTTPS File System will be removed from the data set landing page when the data are added to Earthdata Cloud. However, you can continue to find legacy HTTPS URL in the Programmatic Data Access Guide at https://nsidc.org/data/user-resources/help-center/programmatic-data-access-guide.
The NSIDC DAAC User Services Office currently supports users with direct data download from the Earthdata Cloud HTTPS and with basic access to our AWS Simple Storage Service (S3) buckets. For more details on the access options, please see the following help resources: https://nsidc.org/data/user-resources/help-center/nasa-earthdata-cloud-data-access-guide
See the SMMR and SSM/I-SSMIS data page for a listing of data sets at https://nsidc.org/data/smmr_ssmi
NSIDC DAAC will continue to provide updates, resources, and guidance for users as data sets are migrated to Earthdata Cloud. For any questions or comments, please contact NSIDC DAAC User Services at nsidc@nsidc.org.