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On-Demand Sentinel-1 RTC processing and ArcGIS Toolbox are now available from ASF

Sentinel-1 radiometric terrain correction (RTC) can now be ordered through the ASF Vertex Data Search portal. RTC removes distortions inherent in SAR images and provides analysis-ready data. The ASF ArcGIS Toolbox provides tools that facilitate the use of RTC products for geospatial analysis.

Two Part SAR Webinar: Part 1- Introduction to Synthetic Aperture Radar (SAR) Data

Part 1 of a webinar hosted by GIS specialist, Heidi Kristenson, which includes a basic introduction to SAR data collection, the datasets that are available from the ASF DAAC, and the processing required to extract useful information from the data.

Two-Part SAR Webinar: Part 2- Applications of SAR Data in GIS Environments

Part 2 of a webinar hosted by GIS specialist, Heidi Kristenson, which focuses on Sentinel-1 datasets, discussing options for generating Radiometric Terrain Corrected (RTC) datasets, and present workflows using both ArcGIS and QGIS software.

ALOS AVNIR-2 Data Now Available

Need optical data? ALOS AVNIR-2 Ortho Rectified Image products created by JAXA (Japan Aerospace Exploration Agency) are now available from the ASF DAAC as a result of partnership between NASA and JAXA.

Training and Resources

Synthetic Aperture Radar: Hazards

This six-week edX course teaches the fundamentals of the use of Synthetic Aperture Radar (SAR) remote sensing for disaster monitoring. The course is FREE, with the option to pursue a Verified Certificate. Information online

SAR Image Gallery

SAR Scientist Highlight


APR 2021 -- Rod Boyce

Josef Kellndorfer, PhD

Josef Kellndorfer heartily remembers receiving computer hard drives in the mail containing the data he needed for his research in the 1990s.

Those hard drives came from the Alaska Satellite Facility (ASF), traveling the roughly 4,400 miles to Massachusetts, where he worked at the Woods Hole Research Center, now known as the Woodwell Climate Research Center. Today he is a distinguished visiting scientist at the center but maintaining a strong connection to the satellite facility.

Things have changed mightily since those hard-drive days. He now gets the data he needs from the ASF by tapping on his computer keyboard.

He has been an integral player over his years of official and unofficial connection to the ASF Distributed Active Archive Center (DAAC), which is funded by NASA and part of the University of Alaska Fairbanks Geophysical Institute. And it has shown in the sharp increase in the number of researchers acquiring the data. They tap in from around the globe.

Josef is among the people who they can thank for that.