What does outband_opt mean for l2gen processor for Landsat 8

[dogun]

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.

[OB.DAACx - SeanBailey]

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]

Thanks for the explanation, Sean!