Equivalent Leave Water Reflectance Based on In Situ Spectral Measurements In the Taihu Lake

doi:10.6046/gtzyyg.2010.03.12

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Abstract

Leave water reflectance is an important parameter in the study of water optical characteristics. To better interpret the effect of cyanophytes contamination on water optical characteristics, the authors conducted in situ measurement of spectral reflectance and water sampling in the Taihu Lake on 10 and 11, November 2008. Remarkable effects were observed in leave water reflectance of the cyanobacterial water, leading to an obvious absorption peak in the red region and an increase in the near-infrared region. Equivalent leave water reflectance based on FY-3A and MODIS band settings was derived by using the spectral response functions. Furthermore, the authors used the Ration Index (RI) model for the estimation of chlorophyll-a on 12, November 2008, and observed high determination coefficients R2=0.72, which were further used to map the chlorophyll-a distribution. The results obtained will be helpful to the further evaluation of optical characteristics and water quality.

Keywords Image mosaic Internal Geometric Accuracy Geometric distortion

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	TP 79

Issue Date: 20 September 2010

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	CAO Tong
	HU Wei-Min

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CAO Tong,HU Wei-Min. Equivalent Leave Water Reflectance Based on In Situ Spectral Measurements In the Taihu Lake[J]. REMOTE SENSING FOR LAND & RESOURCES, 2010, 22(3): 54-57.

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https://www.gtzyyg.com/EN/10.6046/gtzyyg.2010.03.12 OR https://www.gtzyyg.com/EN/Y2010/V22/I3/54

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