View Of The Amount Of Water Surface And The Inherent Amount Of Research

The Apparent Optical Properties of water, for example, normalized water-leaving radiance ( )Lw nλand remote sensing reflectance just above sea surface ( )Rr sλ, they are the interaction product between the Inherent Optical Properties of water and the internal incident light flux of water. If we know the relation between AOP and IOP, the relation between constituent concentration and IOP, we will research the water constituent more precise. In this paper, we first introduce the theory, then study on the model of IOP and the relation between AOP and IOP mainly。China's coastal water is case II water typically, and it has obviously regional and seasonal characteristics. We choose the data of HD200304 and HD200309 of the Yellow Sea and the East-China Sea to study. We use specific absorption method, specific scattering method and effective material-specific method to research on the spectrum model of IOP. For the study on water absorption spectrum model, we develop the model of specific absorption coefficients of suspended sediment, specific absorption coefficients of chlorophyll and the CDOM absorption coefficient slope of the value of experience. We use the relative err for evaluating the effect of the inversion model, nearly 93% of the a d* samples inversion relative error could control within±15%; the inversion effect of a *phis poor, and it needs further study in the future; nearly 94% of the Sg samples inversion relative error could control within±20%. For the study on water scattering spectrum model, we develop the model of backscattering probability of total suspended matter, specific scattering coefficients of total suspended matter and the parameter n of total suspended matter. We use the relative deviation for evaluating the effect of the inversion model, nearly 90% of the b bp samples inversion relative error could control within±30%; nearly 90% of the b *p samples inversion relative error could control within±30%. We use the ratio of particulate backscattering to non-water absorption at 676nm( bb p a n= 0.5) or the ration of different constituent concentration with Chl/TSM>0.25mg g-1 to classify the water , then use effective material-specific method to research. We fully investigate the causes of the backscattering and the average photon scattering frequency, establish the effective material-specific absorption and scattering coefficients model, and we could compute a, b and bb. We use the relative err for evaluating the effect of the model, and the inversion model value with the measured value consistent very well, the correlation coefficient between 0.9-0.95. At last, we use empirical method to study on the AOP and the correlation of AOP and IOP, and develop the model of ( )Rr sλand ( )rr sλ, the correlation coefficient is obviously high, the minimum value is 0.709, the maximum value is 0.938, it is obviously different with the case I water, we should study more in the future. We develop the model of Zs with Kd and c; the model of Kd with a and b, we use the relative err for evaluating the effect of the model, there is nearly 80% of the samples inversion relative err could control within±30%; We respectively develop the model of Rr swith a and bb and rr s with a and bb, but the model coefficients is larger, it needs further study in the future.