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Ok.  Thanks Danny.  Seems to be working fine now.

Ok i'll give that a go.  Thanks Sean.

The trouble I had when trying to run a bathymetry mask in SeaDAS is that it asks me if i want to install the ETOPO1_ocssw.nc file and when i click OK it says the installation failed and the mask isn't generated. I thought this was because i needed to install the ocprocessing package?

Ok.  Thanks!

Yes. I see that SeaDAS can do this but i'm trying to circumnavigate the factthat i'm on a windows machine and can't install the ocprocessing. I will get my hands on the bathymetry data and mask it myself outside of SeaDAS. Thanks!

Oh ok.  So not with the L3 data then?  I've been working with the L3 product but it wasnt marked in either the L2 or L3 default mask at https://oceancolor.gsfc.nasa.gov/atbd/ocl2flags/. Thanks.

That is exactly what i was looking for.  I didn't realize it was a NOAA product!  Thanks!

Last question!  Does anyone know what land mask data set is used to mask the SNPP VIIRS ocean color product and if this data is available? I'm particularly interested in the Canadian Arctic. I see in SeaDAS there are four coastline source data sets in the land mask dialogue box: a 50 and 15...

As a windows use I cannot install the ocprocessing package.  However, i'm wondering if the file etopo1_ocssw.nc is available to download from somewhere.  I get the impression this is the bathymetry data that is used for the bathymetric masking.

I'm working with the SNPP VIIRS chlorophyll concnetration product and i've heard tell of the old processing flag, COASTZ, that warns if the pixel occurred in waters <30 m.  Does anyone know if this information is still available? I'm wondering if it's posibble to mask out shallo...