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Re: OLCI Vicarious Calibration Coefficients

Posted: Tue Jun 01, 2021 10:44 am America/New_York
by OB.DAAC - SeanBailey
Here is a set of preliminary gains to try with OLCI-S3B:

gain=[0.98928,0.988936,0.98734,0.97931,0.98508,0.98556,0.98588,0.98491,0.98252,0.98506,1.01325,0.9897,1.0,1.0,1.08547,0.99640,1.0,1.0161,1.0,1.0,1.0]

Regards,
Sean

Re: OLCI Vicarious Calibration Coefficients

Posted: Thu Sep 16, 2021 1:02 pm America/New_York
by aewindle110
Hi Sean,

Can you point me in the direction of where these OLCI/l2gen SVC gains came from? Is there a document reporting these? Would like to reference in a manuscript. Thanks!

Anna

Re: OLCI Vicarious Calibration Coefficients

Posted: Fri Sep 17, 2021 8:14 am America/New_York
by OB.DAAC - SeanBailey
Anna,
The coefficients were derived by me following the procedures established many years ago and published in:

Bryan A. Franz, Sean W. Bailey, P. Jeremy Werdell, and Charles R. McClain, "Sensor-independent approach to the vicarious calibration of satellite ocean color radiometry," Appl. Opt. 46, 5068-5082 (2007) https://doi.org/10.1364/AO.46.005068

However, a paucity of viable MOBY target data required the use of the methods described in:

P. Jeremy Werdell, Sean W. Bailey, Bryan A. Franz, André Morel, and Charles R. McClain, "On-orbit vicarious calibration of ocean color sensors using an ocean surface reflectance model," Appl. Opt. 46, 5649-5666 (2007) https://doi.org/10.1364/AO.46.005649

but with the use of a model based on a climatology of chlorophyll at the MOBY site, rather than the BATS and HOTS sites.

Hope this answers you questions.

Sean