What does outband_opt mean for l2gen processor for Landsat 8

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dogun
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Joined: Tue Oct 11, 2016 11:49 am America/New_York

What does outband_opt mean for l2gen processor for Landsat 8

by dogun » Wed Dec 13, 2017 7:10 pm America/New_York

Hi All,

Wondering what the outputband_opt option means. I used it to process Landsat-8 images and discovered that for some sites, using the zero option adds to more negative Rrs retrieval (for example at 443 nm).

Thanks for your anticipated response.

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OB.DAAC - SeanBailey
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What does outband_opt mean for l2gen processor for Landsat 8

by OB.DAAC - SeanBailey » Mon Dec 18, 2017 8:37 am America/New_York

The outband_opt applies the out-of-band correction for water-leaving radiances.  It is a correction that is used to adjust the sensor to a nominal 11nm square bandpass centered on the nominal wavelengths of the sensor.  It was originally conceived as a means to correct for the significant out-of-band contribution to the SeaWiFS nominal bands due to lower than desired filter quality.  See: http://www.oceanopticsbook.info/view/atmospheric_correction/level_2/outofband_response

Valid options are 0 or 2 (1 is no longer used in the code)  0 turns it off. 

Sean

dogun
Posts: 33
Joined: Tue Oct 11, 2016 11:49 am America/New_York

What does outband_opt mean for l2gen processor for Landsat 8

by dogun » Wed Dec 20, 2017 10:05 pm America/New_York

Thanks for the explanation, Sean!

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