The Alaska Satellite Facility Distributed Active Archive Center (ASF DAAC) at the University of Alaska Fairbanks, in collaboration with NASA’s Jet Propulsion Laboratory (JPL), released ARIA Sentinel-1 Geocoded Unwrapped Interferogram (GUNW) On Demand processing in the Vertex data portal. ARIA-S1-GUNW On Demand products offer high-quality, geocoded unwrapped interferograms in NetCDF format, accompanied by comprehensive metadata and correction layers for atmospheric, orbital, and noise effects.
These data are designed to support a broad range of geophysical and hazard applications such as monitoring earthquakes, volcanoes, land subsidence, and other sources of surface deformation. There are more than a million ARIA-S1-GUNW products archived by ASF DAAC for tectonically active areas worldwide.
This new capability uses ASF DAAC’s On Demand processing platform to generate ARIA-S1-GUNW interferograms for spatial extents and time pairings that are not currently available in the archive. Products generated on demand are added to the archive, expanding the number of products available to all users.
ARIA-S1-GUNW products use a custom framing convention to ensure consistent geospatial extents through time, making them high-quality inputs for time series analysis. Vertex’s user-friendly interface makes it easy to identify ARIA frames for an area of interest and search for valid date pairs to use to generate an ARIA-S1-GUNW product On Demand. Refer to the On Demand ARIA S1 GUNW Product Guide for more information.
The Advanced Rapid Imaging and Analysis (ARIA) project, a collaboration between NASA’s Jet Propulsion Laboratory (JPL) and the California Institute of Technology (Caltech), develops Interferometric synthetic aperture radar (InSAR) and other geospatial data products to support disaster response, scientific research, and long-term monitoring of Earth’s changing surface.
ARIA-S1-GUNW development was funded in part by the Enabling Cloud-Based InSAR Science for an Exploding NASA InSAR Data Archive project under NASA's Advancing Collaborative Connections for Earth System Science (ACCESS) program. The integration of ARIA-S1-GUNW On Demand into ASF DAAC's Vertex platform expands access to these products and enhances NASA's commitment to open, user-driven data services.