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Proceedings Paper

Chlorophyll-a retrieval of coastal waters based on in situ hyperspectral data
Author(s): Wandong Ma; Ping Shi; Yuanzhi Zhang; Qianguo Xing; Jiakui Tang; Dongyan Liu
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Paper Abstract

The chlorophyll-a concentration is a major water quality parameter for coastal remote sensing. The water quality parameters of the Sishili Bay in Yantai's coastal region were obtained at the same time when the hyperspectral remote sensing data were in situ measured. According to the principle of the three-band model, the hyperspectral remote sensing data in situ measurements were averaged to the same band range of Medium Resolution Imaging Spectrometer (MERIS) (660-670nm, 703-713nm and 750-758nm) and Moderate Resolution Imaging Spectroradiometer (MODIS) (662-672nm and 743-753nm). The obtained results show that there was a good linear relationship between the chlorophyll-a concentration and simulated [(B7-1-B9-1)×B10] of MERIS and [B13-1×B15] of MODIS. The determination coefficients were 0.714 and 0.753 for the simulated MERIS and MODIS, with the root mean squared errors (RMSE) of 1.48μg•L-1 and 1.38μg•L-1, respectively. The result demonstrated that the three-band model could be applied to retrieve chlorophyll-a concentration in Yantai's coastal region even if the chlorophyll-a concentration was lower than 10μg•L-1. However, MODIS and MERIS data still needs to examine mapping chlorophyll-a concentration of Yantai's coastal waters.

Paper Details

Date Published: 10 October 2009
PDF: 7 pages
Proc. SPIE 7471, Second International Conference on Earth Observation for Global Changes, 74710U (10 October 2009); doi: 10.1117/12.836325
Show Author Affiliations
Wandong Ma, Yantai Institute of Coastal Zone Research for Sustainable Development, CAS (China)
Institute of Oceanology, CAS (China)
Graduate School of Chinese Academy of Sciences (China)
Ping Shi, Yantai Institute of Coastal Zone Research for Sustainable Development, CAS (China)
Yuanzhi Zhang, The Chinese Univ. of Hong Kong (Hong Kong, China)
Qianguo Xing, Yantai Institute of Coastal Zone Research for Sustainable Development, CAS (China)
Jiakui Tang, Yantai Institute of Coastal Zone Research for Sustainable Development, CAS (China)
Dongyan Liu, Yantai Institute of Coastal Zone Research for Sustainable Development, CAS (China)


Published in SPIE Proceedings Vol. 7471:
Second International Conference on Earth Observation for Global Changes
Xianfeng Zhang; Jonathan Li; Guoxiang Liu; Xiaojun Yang, Editor(s)

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