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ASF DAAC Data Access and Tools
Please note: As part of the Web Unification Project, we are working to import all datasets archived by NASA’s Alaska Satellite Facility Distributed Active Archive Center (ASF DAAC) into our catalog. During this transition, you can also access their datasets by DOI on their website. Access a list of dataset DOIs at ASF DAAC
ASF DAAC provides the Earth science community with global synthetic aperture radar (SAR) data. Explore ASF DAAC datasets and learn more about relevant data tools. If you need to download lots of data at once, see ASF DAAC's bulk data download options and related tutorials.
ASF DAAC Data Tools
| Tool Sort descending | Description | Services | |
|---|---|---|---|
| ASF ArcGIS Toolbox | The ASF_Tools ArcGIS Python Toolbox can be used with either ArcGIS Desktop or ArcGIS Pro, and contains tools that perform geoprocessing tasks useful for working with synthetic aperture radar (SAR) data. | Processing | |
| ASF MapReady | Terrain-correct, geocode, and apply polarimetric decompositions to multi-pol SAR data | Processing | |
| Convert to Vector | Transform point or scene information to formats compatible with Google Earth, GIS, and other tools. | Reformatting | |
| HyP3 | HyP3 is a service for processing Synthetic Aperture Radar (SAR) imagery that addresses many common issues for users of SAR data. | Processing | |
| OpenScienceLab | OpenScienceLab is an ecosystem of open-source tools for data analysis provided by NASA’s Alaska Satellite Facility Distributed Active Archive Center (ASF DAAC). | Analysis | |
| RTC Stack Processor | The radiometric terrain correction (RTC) stack processor tool facilitates time-series analysis of such phenomena as flooding events, deforestation, or glacier retreat. | Analysis, Processing, Search and Discovery, Visualization | |
| Vertex | Vertex is a graphical search interface for finding synthetic aperture radar (SAR) data. | Search and Discovery, Access, Downloading, Processing, Subsetting |
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Datasets
Data at ASF DAAC
| Dataset | Instrument | Temporal Extent | Spatial Extent | Data Format |
|---|---|---|---|---|
| OPERA Radiometric Terrain Corrected SAR Backscatter from Sentinel-1 validated product (Version 1) | 2021-01-01 to Present | N: 90 S: -90 E: 180 W: -180 | HDF5, GeoTIFF, XML | |
| Sentinel-1C Dual Polarization Full Resolution Ground Range Detected Product | 2025-01-01 to Present | N: 90 S: -90 E: 180 W: -180 | SAFE | |
| ALOS PALSAR Radiometric Terrain Correction (RTC) | PALSAR, NASA-ISRO Synthetic Aperture Radar L-Band (L-SAR) | 2006-03-23 to 2011-04-22 | 90.0°, -180.0°, -90.0°, 180.0° | |
| Sentinel-1C Dual Polarization High Resolution Ground Range Detected Product Metadata | 2025-01-01 to Present | N: 90 S: -90 E: 180 W: -180 | XML | |
| ERS-1 (European Remote Sensing Satellite-1) | C-SAR | 1991-08-08 to 1997-09-29 | 90.0°, -180.0°, -90.0°, 180.0° | |
| Sentinel-1C Level 0 Product | 2025-01-01 to Present | N: 90 S: -90 E: 180 W: -180 | SAFE |
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