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I did not mean to suggest that the sensor degradation was the sole reason for differences you see between Hawkeye and MODIS-Aqua. In fact, most of the degradation occurred during the extended commissioning phase. While the instrument likely continues to degrade, the rate of change over time is much ...

Negative Rrs retrievals is the result of an atmospheric correction issue, most often an over estimate of the atmospheric aerosol contribution. Negative TOA reflectance, well that's just bad data. It should not be a common situation. If you are finding it to be more than an extremely rare condition, ...

Bruce, I don't have an answer for you except to say that getting the binner to be happy with the insane number of products that OCI will produce is actively being worked :). I do know that there was a memory issue that was identified and resolved, perhaps that was affecting your processing. This and...

There are a number of possible reasons for the differences you see. There certainly is some level of degradation in the Hawkeye instrument over time (see: https://oceancolor.gsfc.nasa.gov/data/hawkeye/on-orbit-changes/), however there is currently no way to account for any temporal changes in the ra...

This is a question to bring up with the ESA or Eumetsat Copernicus teams. We do not control the geolocation process for the Sentinel missions.

Regards,
Sean

The issue is that the LUT updates required for the update MODIS L1A and GEO codes failed to be included in the V2023.0 release. This will be corrected soon (and you'll see V2023.1). The proper LUTs are available in the T2023.7 test tag.

Sean

One thing to keep in mind is that the NIR Rrs is that the atmospheric correction applied to OLI use the 865nm and 1609nm bands. The basic assumption for the atmospheric correction algorithm (well, the aerosol retrieval portion) is that the NIR bands have zero contribution from the water - thus the e...

Alaric,
Seems we missed this post. Sorry about the long delay in replying. Are you still experiencing the issue? I was not able to replicate it, but that doesn't mean that the problem went away for you.

Sean

While the code does not compile (or run) natively on Windows, you can install WSL (Window Subsystem for Linux) and compile under it on a Windows machine without needing to load Linux natively on the system.
You could also use a Docker container with a Linux OS (via Docker Desktop, for example).

Sean

The code is reading band 9, but it does not treat the band as it does other TOA data. It is read directly into a record specifically assigned to rho_cirrus. This is done because the cirrus channel cannot be treated the same as the other TOA bands. If you want to see the output from l2gen, you will n...