Author
JIANG Guang-Jia,ZHOU Lin,MA Ｒong-Hua1,DUAN Hong-Tao,SHANG Lin-Lin,ＲAO Jia-Wang,ZHAO Chen-Lu
Journal
Journal of Infrared and Millimeter Waves
Paper Keyword
Tai Lake,chlorophyll a,inland waters,specific absorption coefficient
Abstract
Based on four filed cruises from 2004 to 2010 in Tai Lake，four models were investigated in the present study，including two-ration-model(TＲM) ，three-band-model(TBM) ，enhanced three-band-model (ETM) and four-band model (FBM) using in situ measurements and MEＲIS image data． The validation was performed using samples from Taihu (n=13) and Chaohu Lake (n=21) ． The results demonstrated that the ETM was the most appropriate to estimate chlorophyll a concentration in highly turbid waters with higher Ｒ2 (0.34～0.94) and lower ＲMSE (3.17～8.70μg/L) ．Furthermore，the lookup table of the molding input parameters was determined for the four seasons in Taihu Lake． The resultant model was applied to MEＲIS images (8，9 and 10 waveband) to detect the temporal and spatial variations of chlorophyll a concentration in Tai Lake．
