Forum

Dear support, thanks a lot for the reply! I am using l2gen exclusively from the command line (with default options), and so far I've noticed problems with Sentinel-3A and MODIS-A. I have seen that l2gen has taken some weight between the 2 versions. However, the screen outputs appear to be the same (...

Dear support, I am experiencing something that's never happened before, i.e., l2gen is now excruciatingly slow (with very little CPU capacity used, ~1%). This has happened since I installed V2025.1, while the previously installed l2gen, associated with V2023.3, is running fine (with close to 100% CP...

Dear Support, I am interested in using l2gen on lakes. I'd like a confirmation on the use of the atmospheric pressure. From the source code, I understand that the pressure used is always the sea level pressure (from MERRA files) to which is applied an exponential correction if proc_land=1 (default) ...

Dear support,
is there a plan to have VIIRS NOAA-21 ocean color data searchable through the browser
https://oceancolor.gsfc.nasa.gov/cgi/browse.pl ?
Thanks a lot,
Best,
Frederic

Dear Bing,
thanks a lot for your reply. We have V2022 installed.
As said in the post, there are indeed cases for which getanc returns the MERRA met files. But this is not true for all. Please try the example file I mentioned in the post.
Best, F.

Dear Support, when determining the ancillary data necessary for the processing of a MERIS file such as: EN1_MDSI_MER_RR__1P_20020727T093846_20020727T102241_002123_0065_20180523T151615_0100.ZIP getanc returns the former set of ancillary files, NCEP, EPTOMS, ... (it happens also with some OLCI files)....

Dear Support,
thanks a lot for your answer. We've now switched to R2022.4. As reprocessing deals with one mission after the other, is there a page where this SeaDAS tag evolution can be followed, to avoid disturbing you ?
Thanks a lot !
Best, F.

Dear Support, planning to reprocess large volumes of data according to R2022, I am wondering if the current SeaDAS is consistent with that reprocessing. Presently I have SeaDAS 8.2 installed (with the V2022.0 option), but the default options still seems to indicate the use of the single-scattering e...

Dear support,
thanks very much for the clarification.

Dear support,
I am not sure I understand your answer. l2gen might not complain but if a test within l2gen expects a sea ice concentration, providing a SST value might not do a proper job. Could you please clarify ? Thanks a lot in advance,
Best, F.