models of atmospheric correction

nada31 · by **nada31** » Sat Dec 15, 2018 7:06 pm America/New_York

I am looking for models of atmospheric correction and the correction found in L2gen is reliable or not

OB.DAACx - SeanBailey · by **OB.DAACx - SeanBailey** » Mon Dec 17, 2018 7:05 pm America/New_York

Your question is a bit vague. Are you seeking information on which atmospheric correction approaches are implemented in l2gen and their relative merits?
Please elaborate.

Sean

nada31 · by **nada31** » Tue Dec 18, 2018 5:01 pm America/New_York

actually, I downloaded images L1A -> L1B-> L2gen in this state I do processing options-> aer_opt-> I chose the athmospheric correction then I do the validation of my data in situ
my question: are these corrections reliable?

OB.DAACx - SeanBailey · by **OB.DAACx - SeanBailey** » Tue Dec 18, 2018 6:10 pm America/New_York

Well, it depends. If you use the default (aer_opt=-2: Multi-scattering with 2-band, RH-based model selection and iterative NIR correction) then yes. As reliable as we can validate (which we've done, and made those results available). Other options are are not as well validated, and may or may not be appropriate for use in your region of interest. The various atmospheric correction options we've made available in the l2gen program are there for users to try as they may provide a better solution. Nothing is guaranteed.

Sean

nada31 · by **nada31** » Tue Dec 18, 2018 11:39 pm America/New_York

Thank you SeanBailey