Hi Bill,
yes, that helps. Thank you very much for following this.
Search found 11 matches
- Wed Jul 15, 2026 2:32 am America/New_York
- Forum: Home
- Question: Impact of Ionospheric Correction via TEC files
- Replies: 4
- Thu Jul 09, 2026 3:14 am America/New_York
- Forum: Home
- Question: Impact of Ionospheric Correction via TEC files
- Replies: 4
Re: Impact of Ionospheric Correction via TEC files
Hi Bill, thank you for coming back to this! My question has not been answered yet. In the thread "Data Latency" Max explained very well the overall procedure, but my questions about TEC remain: Is the TEC correction important for geometric errors, radiometric errors or both? What kind of e...
- Tue Jun 30, 2026 10:58 am America/New_York
- Forum: Home
- Question: NISAR Data Latency
- Replies: 13
Re: NISAR Data Latency
Please disregard my above post, it is exactly the same as before. I was struggling with the pagination..
Thank you very much Max for all your explanations. I am looking forward to trying all that out soon.
Thank you very much Max for all your explanations. I am looking forward to trying all that out soon.
- Tue Jun 30, 2026 7:36 am America/New_York
- Forum: Home
- Question: NISAR Data Latency
- Replies: 13
Re: NISAR Data Latency
Alright, now I'm getting that the uncertainty you mentioned refers to the "frame/runconfig to RRSD dataset" matching - not to the pixel geolocation accuracy of the L1 or L2 products processed from the RRSD data. The geolocation accuracy of the processed products depends on the precision of...
- Mon Jun 29, 2026 4:37 am America/New_York
- Forum: Home
- Question: NISAR Data Latency
- Replies: 13
Re: NISAR Data Latency
Alright, now I'm getting that the uncertainty you mentioned refers to the "frame/runconfig to RRSD dataset" matching - not to the pixel geolocation accuracy of the L1 or L2 products processed from the RRSD data. The geolocation accuracy of the processed products depends on the precision of...
- Tue Jun 23, 2026 3:09 am America/New_York
- Forum: Home
- Question: Impact of Ionospheric Correction via TEC files
- Replies: 4
Impact of Ionospheric Correction via TEC files
I am trying to gather information about procedure of and possible problems with near-real time processing the NISAR L0 RRSD data up to Level2 GSLC independently of the official processing (https://forum.earthdata.nasa.gov/viewtopic.php?t=7970). In the thread it came up that for the RSLC -> GSLC proc...
- Thu Jun 18, 2026 8:43 am America/New_York
- Forum: Home
- Question: NISAR Data Latency
- Replies: 13
Re: NISAR Data Latency
re: watermask: understood. Thank you for outlining the procedure to link image times and frame numbers so extensively. So in a runconfig, the start and end times are the start and end times of the matching _frame_ that I want to process for, not the start and end times found in the data/RRSD - even ...
- Wed Jun 17, 2026 7:22 am America/New_York
- Forum: Home
- Question: NISAR Data Latency
- Replies: 13
Re: NISAR Data Latency
Are the watermask files available via earthdata as well (like the DEM)? I can find it in earthdata but I can't find links parallel to the DEM links in the above mentioned documentation (e.g. https://nisar.asf.earthdatacloud.nasa.gov/NISAR/DEM/v1.2/EPSG4326/EPSG4326.vrt). I'm asking because S3 access...
- Mon Jun 15, 2026 8:11 am America/New_York
- Forum: Home
- Question: NISAR Data Latency
- Replies: 13
Re: NISAR Data Latency
Hi Max, thanks a lot for this comprehensive answer. I've asked around internally, and we do think it makes a lot of sense for us to process NISAR data this way - depending on the observation scenario. We'll have a look at the incoming data from July forward to do the final evaluation. Thanks also fo...
- Thu Jun 11, 2026 3:59 am America/New_York
- Forum: Home
- Question: NISAR Data Latency
- Replies: 13
Re: NISAR Data Latency
Thank you for your swift reply. The research mission focus, possible outages, and that routine sea ice monitoring is not an emergency scenario are of course all perfectly understandable. This renders the 1-12 hours for L0 RRSD delivery all the more interesting, as that is a good basis to deliver dat...