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The most up-to-date information ASF has on the release and availability of NISAR products can be found in the NISAR Data User Guide , which is updated immediately when new information is received from the NISAR science team. Regarding your questions on backprocessing mission date, refer to the secti...

Calibrated L-band data from the NASA-ISRO Synthetic Aperture Radar ( NISAR ) mission are now available through the Alaska Satellite Facility Distributed Active Archive Center ( ASF DAAC ) and NASA Earthdata. The initial public release began on July 20, 2026, and includes observations acquired on or ...

Hi Jonathan, Here's what the NISAR team has to say: ...applying TEC files from the previous day is a bad idea since there is certainly variation that occurs day-to-day that would affect the geometric calibration, but I can’t say for certain how much error it introduces to GSLC products, and if it is...

The course instructor reports that it has been announced several times that the homework "will be accessible on the last day of the NISAR ARSET training, which is on July 16 and it can be accessed through the training webpage."

If you are logging in to Vertex for the first time, you will be prompted to agree to the ASF EULA (Terms of Service). Please note that this process must be completed in English . You will get an error message if you use a browser translator or attempt to do this in another language. Thank you. _____...

Hi Jonathan, I apologize, but since your post wasn't originally tagged with "ASF," I didn't see it until now. I just want to clarify if your questions have been answered in your later post NISAR Data Latency ? If not, I'm hoping someone from the NISAR science team will see this and respond...

Hi Vincent, The Sentinel-1 delivery system issue has been fixed and we are receiving products. Because of the backlog that has built up, you can expect significant latency in the availability of new products. This may persist for a week or longer. We apologize. Thanks again for your patience. Regard...

Hi Vincent, ASF experienced a system issue over the weekend that prevented the receipt of new Sentinel-1 products. We're currently working to resolve the issue and get the system back online. Once that happens, there will be some latency in the availability of new products as we work through the bac...

The SSL certificate for datapool.asf.alaska.edu expired last weekend, which affected the ASF download service. The certificate has been renewed and redeployed, and the distribution system is back online.

We apologize for the inconvenience this caused and thank you for your patience!

The NASA Observational Products for End-Users from Remote Sensing Analysis ( OPERA ) project announces a planned outage of OPERA RTC and CSLC products from June 24 to approximately July 02, 2026, while Sentinel-1 finalizes orbit configurations. We expect no OPERA RTC, CSLC, DSWx-S1, DIST-S1, and DIS...