Is there a mask/way to retrieve ocean-only values in SeaWiFS products?

[nvoostende]

I would like to perform statistical analyzes on ocean-only chlorophyll values from SeaWiFS mapped L3 climatological products.
Is there a way to mask out non-ocean chlorophyll values (e.g., from lakes) in SeaDAS or python?

Cheers,
Nicolas

[OB.DAACx - SeanBailey]

Yes, it is possible with SeaDAS.  You would need to generate a mask using a combination of the products generated from the "Coastline, Land and Water Masks"  and "Bathymetry and Elevation" tools, with some additional tweaks to handle the larger inland water bodies (US Great Lakes and Caspian Sea).  The attached mask definition file will work, if you're using the 9km Standard Mapped Products.  You'll first have to generate the bathymetry and landmask products, then simply import the attached mask into the "Mask Manager".  If the mask isn't to your liking, feel free to modify it :grin:

The mask can then be used in the analysis and statistics tools.  Or you can generate a band from the mask, and export it to a file (png, geotiff, etc) to be read in as a mask for use in
a python script.

Sean
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