Title :
Estimating chlorophyll a concentration in lake water using space-borne hyperspectral data
Author :
Li, Li ; Yin, Qiu ; Xu, Hua ; Gong, Cailan ; Chen, Zhenghua
Author_Institution :
Inst. of Remote Sensing Applic., Chinese Acad. of Sci., Beijing, China
Abstract :
Chlorophyll fluorescence properties are effective in detecting chlorophyll a concentration in lake water, which provided new optional sensitive bands to retrieval chl-a concentration in complex water. Hyper Spectral Imager (HSI) on HJ-1A satellite with great spectral resolution can be used to detect spectral characteristics of chlorophyll fluorescence peak. The effects of empirical algorithms of lake Taihu and the algorithm based on height of fluorescence peak are analyzed by using MODIS data and HSI data respectively. The results show that compared with empirical MODIS algorithms of lake Taihu, chl-a retrieval based on HSI is more similar to the in-situ reference data.
Keywords :
hydrological techniques; lakes; organic compounds; remote sensing; water quality; China; HJ-1A satellite; HSI data; Hyperspectral Imager; MODIS data; Taihu lake; chlorophyll a concentration estimation; chlorophyll fluorescence properties; lake water; space borne hyperspectral data; Fluorescence; Hyperspectral imaging; Lakes; MODIS; Reflectivity; Water; Image analysis; Remote sensing; Satellite application; Water;
Conference_Titel :
Geoscience and Remote Sensing Symposium (IGARSS), 2010 IEEE International
Conference_Location :
Honolulu, HI
Print_ISBN :
978-1-4244-9565-8
Electronic_ISBN :
2153-6996
DOI :
10.1109/IGARSS.2010.5654478
