. Collected reprints / Atlantic Oceanographic and Meteorological Laboratories [and] Pacific Oceanographic Laboratories. Oceanography I I I I I I I I I I I I I I I ' I ⢠â¢â¢ "HAZE C" _ HENYEY- GREENSTEIN 2 co"1. i ' I ' I I L_l I l__l IâIâIâIâ1â1- 120 140 160 180 0 (degrees) Fig. 4. Comparison between the haze (' and various Henvey- ('â reenslein phase functions characterized by asymmetry parameters and and II is the scattering angle. Since i,' for the haze C phase function used in the computations described in the text is , computations have b
. Collected reprints / Atlantic Oceanographic and Meteorological Laboratories [and] Pacific Oceanographic Laboratories. Oceanography I I I I I I I I I I I I I I I ' I ⢠â¢â¢ "HAZE C" _ HENYEY- GREENSTEIN 2 co"1. i ' I ' I I L_l I l__l IâIâIâIâ1â1- 120 140 160 180 0 (degrees) Fig. 4. Comparison between the haze (' and various Henvey- ('â reenslein phase functions characterized by asymmetry parameters and and II is the scattering angle. Since i,' for the haze C phase function used in the computations described in the text is , computations have been made with Phi\W for i,' values of , and Figure 4 com- pares these PhCiWs with the haze C phase function. The HG phase function for# = clearly fits the haze C phase function quite well in the range of 5° < 0 computed with ) will be in close agreement with the haze C computations only for ii close to Figures 5 and 6, which compare the re- sults of computations of I\ and /_., respectively, for with a' = , (steplike lines) and the haze C phase function (solid circles) for the normal aerosol concentration, show that this is indeed the case. It is seen that except for apparent statistical fluctuations, the HG phase function for# = yields values of/j and 12 in good agreement with the haze C computations. This suggests that the detailed structure of the phase function is not of primary importance in determining 1 \ and 12, and it may be sufficient for remote sensing purposes to parameterize the phase function by i,'. To get a feeling for the importance of variations in the phase function in the remote sensing of ocean color, consider the effect of changing the aerosol phase func- tion from a HG with # = to g = over an ocean with R = From Figs. 5 and 6, it is found that the normalized radiance at n = (the assumed obser- vation angle) decreases by X 10-:'; this decrease in radiance would be inter
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