A derivative spectrum algorithm for determination of chlorophyll-a concentration in the Pearl River estuary
Chen, CQ; Tang, SL; Xing, QG; Yang, JK; Zhan, HG; Shi, HY
2007
发表期刊IGARSS: 2007 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM, VOLS 1-12 - SENSING AND UNDERSTANDING OUR PLANET
页码925-928
摘要Chlorophyll-a is the pigment presented in living plants or phytoplankton responsible for the photosynthesis, and it is a very important ecological and environmental parameter of waters, not only used for estimation of ocean primary productivity, but also for detection of red tides and for water quality. The chlorophyll-a concentration in coastal waters is generally overestimated from ocean color satellite data with common algorithm. In order to improve the remotely-sensed estimation of chlorophyll-a, many efforts have been made. In this study, six cruises for in situ data collection were conducted in lower reaches of the Pearl River and its estuary, the Lingdingyang, from 2003 to 2006. And the variables such as temperature, salinity, chlorophyll-a, total suspended matters (TSM), nutrients and gelbstoff absorption coefficient (Ag) were collected. The in situ remote sensing reflectance (Rrs) were measured from above waters with an Ocean Optics USB2000 spectrometer, which covers wavelength from 200 to 850 nm with spectral resolution of 0.38 nm. The original in situ Rrs data were processed to EO-1/hyperion bands (at resolution about 10 not), and the derivative spectra with the different spectral resolutions were analyzed. The statistic analysis shows that the relative coefficient between derivative spectrum and chlorophyll-a is higher than that between original spectrum and chlorophyll-a. The band with highest relative coefficient to chlorophyll-a was employed for development of chlorophyll-a retrieval algorithm. A derivative spectrum algorithm was developed, and then applied to EO-1/hyperion data, which were acquired in December 16, 2006. The distribution image maps of chlorophyll-a concentration retrieved from EO-1/hyperion data were obtained. It shows that the derivative spectral method is an alternative approach for detection of water quality in coastal waters.
部门归属[Chen, Chuqun; Tang, Shilin; Xing, Qianguo; Yang, Jinkun; Zhan, Haigang] Chinese Acad Sci, S China Sea Inst Oceanol, LED, Guangzhou 510300, Guangdong, Peoples R China
关键词Derivative Spectrum Chlorophyll-a Concentration Pearl River Estuary Eo-1 Hyperion
学科领域Geosciences, Multidisciplinary ; Remote Sensing
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收录类别sci
资助项目LED
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/5829
专题热带海洋环境国家重点实验室(LTO)
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Chen, CQ,Tang, SL,Xing, QG,et al. A derivative spectrum algorithm for determination of chlorophyll-a concentration in the Pearl River estuary[J]. IGARSS: 2007 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM, VOLS 1-12 - SENSING AND UNDERSTANDING OUR PLANET,2007:925-928.
APA Chen, CQ,Tang, SL,Xing, QG,Yang, JK,Zhan, HG,&Shi, HY.(2007).A derivative spectrum algorithm for determination of chlorophyll-a concentration in the Pearl River estuary.IGARSS: 2007 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM, VOLS 1-12 - SENSING AND UNDERSTANDING OUR PLANET,925-928.
MLA Chen, CQ,et al."A derivative spectrum algorithm for determination of chlorophyll-a concentration in the Pearl River estuary".IGARSS: 2007 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM, VOLS 1-12 - SENSING AND UNDERSTANDING OUR PLANET (2007):925-928.
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