bpdf_tsang_u10 valueThe BPDF model has been developed by Tsang et al. (1985). The wind speed is the most important parameter affecting the ocean reflectance matrix. The BPDF model also takes into account shadowing by surface waves. The model has been implemented in a FORTRAN routine by Mishchenko (http://www.giss.nasa.gov/staff/mmishchenko/brf/) which has been included into libRadtran.