Earthdata Forum

Hi All,

Please how can I use SeaDAS to generate files for (1) cloud (2) land.

Thanks so much

Please elaborate.  Are you using or trying to generate level2 files?  Tell us what your input file is. 
Note: NASA OB.DAAC Level2 files contain flags for both cloud (l2_flags.CLDICE) and land (l2flags.LAND).

Danny

Thanks Danny. Yes.
Can I get those exported as a file (geotif/nc)?

Yes what?  Please be more descriptive so we and other users can follow what you are asking.

If you load a level2 file into SeaDAS you can export it in GeoTIFF format.  The flags can be found bitwise in the l2_flags raster. 
See https://oceancolor.gsfc.nasa.gov/atbd/ocl2flags

Danny

Hi Danny,

I meant I was trying to generate level2 files (Rrs) but I also need to export cloud and land masks as separate geotiff files for post processing.

You generate level2 files using SeaDAS l2gen located within OCSSW menu or at command line.  You can also download pre-processed level2 files from https://oceancolor.gsfc.nasa.gov/cgi/browse.pl.  The OC level2 files located there already have Rrs.

If you want to create a file with raster bands of the cloud and land masks you can use the BandMaths Tool within SeaDAS.  The expression would be "(l2_flags.CLDICE) ? 1 : 0" and "(l2_flags.LAND) ? 1 : 0".

If you want to do this at the command read the GPT Cookbook located with SeaDAS GUI help menu.

Danny

Thanks Danny!