Rayleigh optical thickness in msl12_sensor_info.dat
Posted: Wed Apr 25, 2018 4:58 pm America/New_York
Dear SeaDAS team,
I am relying on Rayleigh optical thickness values provided in msl12_sensor_info.dat, as Tau_r (for VIIRS, SeaWiFS and MODIS).
However after recalculating these values using the SRF as provided in https://oceancolor.gsfc.nasa.gov/docs/rsr/ and using [Bodhaine, 99], and I am finding large discrepancies, for example for VIIRS from +2% at 410nm, to nearly -2% at 671nm - with differences of similar order of magnitudes for MODIS and SeaWiFS.
Could you clarify how these Tau_r values have been generated, and how they are used ?
Thanks,
François
I am relying on Rayleigh optical thickness values provided in msl12_sensor_info.dat, as Tau_r (for VIIRS, SeaWiFS and MODIS).
However after recalculating these values using the SRF as provided in https://oceancolor.gsfc.nasa.gov/docs/rsr/ and using [Bodhaine, 99], and I am finding large discrepancies, for example for VIIRS from +2% at 410nm, to nearly -2% at 671nm - with differences of similar order of magnitudes for MODIS and SeaWiFS.
Could you clarify how these Tau_r values have been generated, and how they are used ?
Thanks,
François