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Thank you for your quick return.The attachment of the file is possible?And I mean SST (not SST_CLOUD) is set in Suwa Lake, though you mentioned that the small lake is dealt as land.>Our land/water mask flags only the largest inland water bodies.  At 15 sq km, Lake Suwa is probably flagged >as l...

Thank you for your reply. Bit 15 of SST Quality Flags.https://oceancolor.gsfc.nasa.gov/atbd/sst/flag/>Lake Suwa is probably flagged as land.OK, but I confirmed the value of SST, it had some pixels of water temperature.We wonder whether we can use it, or not.>Your best bet is to generate l2 products ...

Thank you for your reply.
I checked the value, and found that bit 15 was flagged in lake Suwa (inland water?) in all weather conditions.
Is it correct?

We received the following comments:"As an aside, the file in question does not have any valid SST retrievals over the lake. The qual_sst flag indicates the data are all cloud covered."I'd like to ask several questions.1. SST data has already some null value in the Ocean area.We first c...