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Every Level 2 NetCDF file has a set of flags in the variable l2_flags. Here is a dump of the definition: int l2_flags(number_of_lines, pixels_per_line) ; l2_flags:long_name = "Level-2 Processing Flags" ; l2_flags:valid_min = -2147483648 ; l2_flags:valid_max = 2147483647 ; l2_flags:flag_mas...

Our git repositories are not accessible to the public. You can use SeaDAS to install a released version of the source code. Use the SeaDAS GUI to install the OCSSW src. The code is also available on the web if you want to browse: https://oceancolor.gsfc.nasa.gov/docs/ocssw then click on: Files->web-...

Monthly data has the days averaged. If you want every day then grab the daily files.

don

You have found the MODIS Bowtie effect. Since the MODIS sensor has 10 detectors that take data on each scan, the position of the edge pixels at the beginning and end of the scan overlap the previous and next scan. Here is a web page describing this in more detail: https://oceancolor.gsfc.nasa.gov/do...

I found the problem with the SAFE file format reader. This will be fixed in the next T and R tags. A value needed by the smile correction was not calculated soon enough. Thanks for finding this.

don

Yes, we see the same problem.
Thanks, we will take a look.

don

MSI does not work with the "R" tags or any "T" tag > T2022.13
I would suggest you use the standard tag for MSI (V2022.0)
We will look into updating the MSI processing.

don

The SST file has a variable with the ice data in it. For the VIIRS J2 file in your example, notice the variable named "ice" from the dump of the NetCDF file: dshea@gs616-skeletonema anc % getanc V2021182021200.L1A_JPSS1.nc icefile=/Users/dshea/ocssw/var/anc/2021/182/N2021182_SST_OIV2AV_24h...

MSI files take a long time to read into l2gen. Since we do not really support MSI data, we just whipped up a less than optimal reader. If you want the scan line data for each line, all the data will be read and it takes a long time. If you do not need the data for each line and just the global attri...

The directions to compile the source code are here:

https://seadas.gsfc.nasa.gov/build_ocssw/

It looks like you never built the $OCSSWROOT/opt/src which is step 6.

don