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Dataset
Alaska Satellite Facility SAR Data Center
NASA’s Alaska Satellite Facility archives synthetic aperture radar data and provides services for researchers using those datasets.
About Alaska Satellite Facility SAR Data Center
The Alaska Satellite Facility (ASF) operates NASA's archive of synthetic aperture radar (SAR) data and provides services to researchers, supporting NASA's ESDIS project. Since 1991, ASF has connected Earth-observing satellites with user communities for Earth science research, disaster response, and commercial applications. Datasets include Sentinel-1 and NISAR L-band products, which can be discovered through ASF Vertex or NASA's Earthdata Search, with programmatic access via ASF SearchAPI and the asf_search Python package. ASF also provides training resources.
Limits: content from the ASF DAAC website is moving to earthdata.nasa.gov through the end of 2026, with links redirected in stages. A permanent NISAR instrument data gap exists between 2026-07-27T22:03:25Z and 2026-08-10T00:55:27Z. Pricing information is not provided.
Key features
- Operates NASA's archive of synthetic aperture radar data and related researcher services.
- Provides ASF Vertex and NASA Earthdata Search for discovering SAR datasets.
- Offers ASF SearchAPI and asf_search Python package for programmatic data access.
- Hosts training resources and webinars on SAR and NISAR data use.
- Tracks data updates and notices, including delayed Sentinel-1 product ingestion.
- Includes NISAR L-band and Sentinel-1 datasets in its archive.
Best for: Researchers, decision-makers, and commercial users who need access to NASA SAR datasets for Earth science, disaster response, or related applications.
Good for
- Operates NASA's SAR data archive and has served users since 1991.
- Provides multiple access routes, including Vertex, Earthdata Search, SearchAPI, and asf_search.
- Offers training and scientist-led resources for SAR data users.
Watch out for
- ASF DAAC website content is moving to earthdata.nasa.gov through the end of 2026, with staged link redirects.
- A permanent NISAR instrument data gap exists between 2026-07-27T22:03:25Z and 2026-08-10T00:55:27Z.
Alaska Satellite Facility SAR Data Center at a glance
- Official website
- asf.alaska.edu
- Category
- Research & Data › Geographic & Mapping Data
- Type
- Dataset
- Platforms
- Web
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
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Alaska Satellite Facility SAR Data Center FAQ
What datasets are available from ASF?
ASF operates NASA's archive of SAR data, including NISAR L-band and Sentinel-1 products.
How can I access ASF data programmatically?
Programmatic access is available through ASF SearchAPI and the asf_search Python package.
Is there a known gap in NISAR data?
A permanent NISAR instrument data gap exists between 2026-07-27T22:03:25Z and 2026-08-10T00:55:27Z.
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