A Method to Identify Case I and Case II Waters Based on the MODIS Images

Abstract

Abstract:

By statisically analyzing many MODIS images, an empirical algorithm is described, which is used to determine the case II water from the MODIS image．The algorithm takes advantage of the characteristic that the apparent reflectances of the case I water and the case II water are the same in SWIR band，but considerably different in visible band. The empirical algorithm was applied to MODIS Image over Bohai, the waters in the Bohai were classified into two types: case I and case II. The results show that the classification empirical algorithm proposed in is precise and effective.

Key words: MODIS images, land/sea mask, threshold, apparent reflectance

CLC Number:

TP751.1
TP79

MA Jin-Ji, Chen-Gao, Jiang-Xin-Hua. A Method to Identify Case I and Case II Waters Based on the MODIS Images[J]. Journal of Atmospheric and Environmental Optics, 2009, 4(3): 201-205.

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