NASA Earthdata

If running SlideRule locally and not using the AWS service, data will need to be retrieved from NASA. NASA data is freely available from their Distributed Active Archive Centers (DAACs).

NASA Data Distribution Centers

The NASA Earth Science Data Information Systems Project funds and operates 12 Distributed Active Archive Centers (DAACs) throughout the United States. These centers have recently transitioned from ftp to https servers. The https updates are designed to increase performance and improve security during data retrieval. NASA Earthdata uses OAuth2, an approach to authentication that protects your personal information.


The National Snow and Ice Data Center (NSIDC) DAAC provides data and information for snow and ice processes, particularly interactions among snow, ice, atmosphere, and ocean, in support of research in global change detection and model validation. If any problems contact NSIDC support at or the NASA EOSDIS support team

Steps to Sync from NSIDC

  1. Register with NASA Earthdata Login system

  2. After registering, login to the system

  3. Add NSIDC_DATAPOOL_OPS and nsidc-daacdata applications to Earthdata

  4. Copy your NASA Earthdata credentials or create a .netrc file to store your credentials permanently

echo "machine login <uid> password <password>" >> ~/.netrc
chmod 0600 ~/.netrc

Other Data Access Examples