Ruddick et al. [Appl. Opt. 39, 897 (2000)] extended the standard SeaWiFS atmospheric-correction algorithm for use over turbid coastal and inland waters. However, Ruddick’s method is based on the assumption of a spatially homogeneous constant ratio for the water-leaving reflectances normalized by the sun-sea atmospheric transmittance at 765 and 865 nm. Such first-order b b /a model-based assumption can result in an inaccuracy for highly turbid water. Using the first- and second-order b b /(a + b b ) models as well as the second-order b b /a model (which, more realistically, do not assume spatial homogeneity ratio), we suggest using the modified assumption, R(8)-1 = α0R(7)-1 + (l1Q)-1 (1 - α0), instead of Ruddick’s assumption, in SeaWiFS atmospheric-correction algorithms for highly turbid waters.
© 2003 Optical Society of America
Original Manuscript: July 2, 2002
Revised Manuscript: October 21, 2002
Published: February 20, 2003
Yan Li, "Atmospheric correction of SeaWiFS imagery for turbid coastal and inland waters: comment," Appl. Opt. 42, 893-895 (2003)