OceanColor Validation Information

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Ocean Color Standard Processing Details

Flags and Masks
Ozone Sources
Atmospheric Correction and Aerosol Models
Polarization Correction (pdf 1.5 MB)
BRDF Correction - "Bidirectional Reflectance Distribution Function" gives the reflectance as a function of illumination geometry and viewing geometry
Spectral Response Functions for Satellite sensors
Vicarious Gains
Full Description of MODIS Aqua data processing within OBPG (Ocean Biology Processing Group)
Full Description of SeaWiFS data processing within OBPG (Ocean Biology Processing Group)

Calibration

MODIS Level 1 Calibration
SeaWiFS Level 1 Calibration
Vicarious Calibration for SeaWiFs and Aqua are generated using data from MOBY (Marine Optical Buoy)

Ongoing Validation

Level 3 (SMI) Time Series Plots
In situ Validation
Chesapeake Bay as observed by SeaWiFS and MODIS-Aqua
Periodic Data Reprocessings are undertaken as improvements are made to the algorithms
Mission Global Comparisons
Product validation and comparison methods
Aqua/SeaWiFS Inherent Differences : Analysis and explanation of the known differences between MODIS and SeaWiFS retrieved water-leaving radiances and derived chlorophyll (pdf 597 kb)
OC4v4 Versus OC3M chlorophyll algorithms : OC4v4 is the current default algorithm for SeaWiFS, while OC3M is the current default algorithm for MODIS (Aqua). These algorithms may retrieve different values for chlorophyll for a given input Rrs ratio.
Analysis of potential calibration offset between MODIS and SeaWiFS (pdf)

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Authorized by: gene carl feldman

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Updated: 05 January 2012