Disclaimer: This material is being kept online for historical purposes. Though accurate at the time of publication, it is no longer being updated. The page may contain broken links or outdated information, and parts may not function in current web browsers. Visit https://espo.nasa.gov for information about our current projects.


“Detailed validation of the bidirectional effect in various Case I and Case...

Gleason, A. C. R., K. Voss, H. R. Gordon, M. Twardowski, J. Sullivan, C. Trees, A. Weidemann, J.-F. Berthon, D. Clark, and Z.-P. Lee (2012), “Detailed validation of the bidirectional effect in various Case I and Case II waters”, Optics Express, 20, 7630-7645.

Simulated bidirectional reflectance distribution functions (BRDF) were compared with measurements made just beneath the water’s surface. In Case I water, the set of simulations that varied the particle scattering phase function depending on chlorophyll concentration agreed more closely with the data than other models. In Case II water, however, the simulations using fixed phase functions agreed well with the data and were nearly indistinguishable from each other, on average. The results suggest that BRDF corrections in Case II water are feasible using single, average, particle scattering phase functions, but that the existing approach using variable particle scattering phase functions is still warranted in Case I water.

PDF of Publication: 
Download from publisher's website.
Research Program: 
Ocean Biology and Biogeochemistry Program (OBB)
Radiation Science Program (RSP)