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湖泊科学  2012 

太阳天顶角对太湖恰在水面下辐照度比影响的定量分析

DOI: 10.18307/2012.0123

Keywords: 辐照度比,吸收系数,散射系数,太阳天顶角,太湖

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Abstract:

恰在水面下辐照度比变化与吸收系数、散射系数和太阳天顶角存在着密切的关系,而太阳天顶角对太湖恰在水面下辐照度比的定量影响程度尚不明确.为此,本文基于2010年5月太湖27个样点的水体光学参数和理论数值模拟,对太湖水体的情况进行研究.理论数值模拟结果表明:当太阳天顶角分别在0°~25°和70°~89°区间内变化时,对恰在水面下辐照度比增幅影响较小,增幅相差不到10%;而当太阳天顶角在30°~70°之间时,对辐照度比增幅影响很大,增幅为13.13%~52.19%.同时,利用实测数据对理论结果进行线性相关验证表明,此数值研究整体上符合太湖的实际情况.因此,对水体光学特性以及光对水生生态系统驱动作用研究的时候,应充分考虑太阳天顶角的影响.

References

[1]  Kirk JTO. Light and photosynthesis in aquatic ecosystem. Cambridge:Cambridge University Press,1994.
[2]  Kirk JTO. Dependence of relationship between inherent and apparent optical properties of water on solar altitude. Limnology and Oceanography,1984,29(2):350-356.
[3]  Morel A,Gentili B. Diffuse reflectance of oceanic waters:its dependence on Sun angle as influenced by the molecular scattering contribution. Applied Optics,1991,30(30):4427-4438.
[4]  Mitchell BG. Algorithms for determining the absorption coefficient for aquatic particulates using the quantitative filter technique(QFT). Proceedings of SPIE,1990,1302:137-148.
[5]  Cleveland JS,Weidemann AD. Quantifying absorption by aquatic particles:A multiple scattering correction for glass-fiber filters. Limnology and Oceanography,1993,38:1321-1327.
[6]  赵巧华,秦伯强. 风浪对水体表层下行光场平均余弦影响的数值研究. 水科学进展,2006,17(4):531-537.
[7]  Liou KN. 大气辐射导论:第2版. 北京:气象出版社,2004:93-118.
[8]  Kirk JTO. Estimation of the absorption and the scattering coefficients of natural waters by use of underwater irradiance measurements. Applied Optics,1994,33(15):3276-3278.
[9]  Alber A,Mobley CD. An analytical model for subsurface irradiance and remote sensing reflectance in deep and shallow case-2 waters. Optics Express,2003,11(22):2873-2890.
[10]  戴永宁,李素菊,王学军. 巢湖水体的表观光学特性测量与分析. 中国环境科学,2008,28(11):979-983.
[11]  马荣华,宋庆君,唐军武等. 太湖秋季水体遥感反射比的简单经验估测模型. 湖泊科学,2007,19(3).
[12]  Gordon HR. Dependence of the diffuse reflectance of natural waters on the sun angle. Limnology and Oceanography, 1989,34(8):1484-1489.
[13]  Bricaud A,Morel A,Prieur L. Absorption by dissolved organic matter of the sea (yellow substance) in the UV and visible domain. Limnology and Oceanography,1981,26:43-53.
[14]  Petzold TJ. Volume scattering functions for selected natural waters. California:Scripps Institution of Oceanography,1972:72-78.

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