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湖泊科学  2009 

基于辐射传递模拟及人工神经网络技术的二类水体光学组分的反演

DOI: 10.18307/2009.0204

Keywords: 海洋辐射传递模拟,人工神经网络,光学组分的反演,二类水体

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Abstract:

介绍了一种基于辐射传递模拟和人工神经网络技术(ANN)的二类水体水色要素(CHL,SPM,CDOM)的反演算法.在辐射传递模拟计算中,纯海水吸收和散射、浮游植物吸收的数据或模型是已发表的被广泛采用的结果.黄色物质和非浮游植物颗粒吸收以及海洋颗粒物的散射模型从COASTLOOC数据中导出.另外,还利用了一个新的海洋颗粒物后向散射概率模型,在该模型中颗粒物后向散射概率是颗粒有机物与SPM比值和波长的函数.把上述定义的固有光学性质作为输入,经过辐射传递模拟得到海表面以下辐照度反射比数据集,然后将该模拟数据集用于训练不同的人工神经网络,获取水色和水色要素浓度之间函数关系的最佳近似.利用以上建立的基于人工神经网络的算法,把COASTLOOC数据集和PMNS数据集的辐照度反射比作为输入进行水色要素反演,通过比较反演值和真实测量值来评价算法性能.结果显示,建立的基于ANN的二类水体水色要素反演算法具有很好的性能.

References

[1]  Siegel DA, Michaels AF. Quantification of non-algal light attenuation in the Sargasso Sea: implications for biogeochemistry and remote sensing. Deep Sea Res, 1996, 43: 321-345.
[2]  IOCCG. Ocean Colour Sensors, www.ioccg.org/sensors_ioccg.html, 2008.
[3]  Garver SA, Siegel DA. Inherent optical property inversion of ocean colour spectra and its biogeochemical interpretation 1.Time series from the Sargasso Sea. J Geophys Res, 1997, 102: 18607-18625.
[4]  Hoge FE, Lyon PE. Satellite retrieval of inherent optical properties by linear matrix inversion of oceanic radiance models: an analysis of model and radiance measurement errors. J Geophys Res, 1996, 101: 16631-16648.
[5]  Lee ZP, Carder KL, Arnone R. Deriving inherent optical properties from water color: a multi-band quasi-analytical algorithm for optically deep waters. Appl Opt, 2002, 41: 5755-5772.
[6]  Thiria S, Meija C, Badran F et al. A neural network approach for modelling non-linear transfer functions: application for wind retrieval from space borne scatterometer data. J Geophys Res, 1993, 98: 22827-22841.
[7]  Schiller H, Doerffer R. Neural network for emulation of an inverse model-operational derivation of Case II water properties from MERIS data. Int J Remote Sens, 1999, 20: 1735-1746.
[8]  Zhang Tinglu, Fell Frank, Liu zhishen et al. Evaluating the performance of artificial neural network techniques for pigment retrieval from ocean colour in Case I waters. J Geophys Res, 2003, 108: 3286.
[9]  Doerffer R, Schiller H. The MERIS Case 2 water algorithm. Inte J Remote Sens, 2007, 28: 517.
[10]  Fargion GS, Mueller JL. Ocean optics protocols for satellite ocean colour sensor validation, Revision 2. NASA/TM-2000-209966. NASA Goddard Space Flight Center, Greenbelt, Maryland, 2000: 98.
[11]  Zhang Tinglu. Retrieval of oceanic constituents with artificial neural network based on radiative transfer simulations techniques [PhD thesis]. Institut fuer Weltraumwissenschaften, Freie Universitaet Berlin, Germany, 2003.
[12]  Babin M. Coastal surveillance through observation of ocean colour (COASTLOOC), Final Report, Project ENV4-CT96-0310, Laboratoire de Physique et Chimie Marines, Villefranche-sur-mer, France, 2000: 233.
[13]  Pope RM, Fry ES. Absorption spectrum(380-700)of pure water. II. Integrating cavity measurements. Appl Opt, 1997, 36: 8710-8722.
[14]  Bricaud A, Morel A, Babin M et al. Variations of light absorption by suspended particles with chlorophyll-a concentration in oceanic (case 1) waters: Analysis and implications for bio-optical models. J Geophys Res, 1998, 103: 31033-31044.
[15]  Shimwell SJ, Wernand M. Ocean colour algorithm development, PMNS report, 1995, Netherlands Institute for Sea Research, Netherlands.
[16]  Falkowski PG. The role of phytoplankton photosynthesis in global biogeochemical cycles. Photosyn Res, 1994, 39: 235-258.
[17]  Mopper K, Zhou XL, Kieber RJ et al. Photochemical degradation of dissolved organic carbon and its impact on the oceanic carbon cycle. Nature, 1991, 353: 60-62.
[18]  Siegel DA, Maritorena S, Nelson NB et al. Global distribution and dynamics of coloured dissolved and detrital organic materials. J Geophys Res, 2002, 107: 3228-3242.
[19]  Moran MA, Zepp RG. Role of photo reactions in the formation of biologically labile compounds from dissolved organic matter, Limnol Oceanogr, 1997, 42: 1307-1316.
[20]  O\'Reilly JE, Maritorena S, Mitchell BG et al. Ocean colour chlorophyll algorithms for SeaWiFS. J Goephys Res, 1998, 103: 24937-24953.
[21]  Doerffer R, Fischer J. Concentrations of chlorophyll, suspended matter, and gelbstoff in case II waters derived from satellite coastal zone colour scanner data with inverse modelling methods. J Geophys Res, 1994, 99: 7457-7466.
[22]  Carder KL, Chen FR, Lee ZP et al. Semianalytic moderate resolution imaging spectrometer algorithms for chlorophyll and absorption with bio-optical domains based on nitrate-depletion temperatures. J Geophys Res, 1999, 104: 5403-5421.
[23]  Roesler CS, Perry MJ. In situ phytoplankton absorption, fluorescence emission, and particulate backscattering spectra determined from reflectance. J Geophys Res, 1995, 100: 279-294.
[24]  Lee ZP, Carder KL, Mobley CD et al. Hyperspectral remote sensing for shallow waters: 2. Deriving bottom depths and water properties by optimisation. Appl Opt, 1999, 38: 3831-3843.
[25]  Keiner LE, Brown CW. Estimating oceanic chlorophyll concentrations with neural networks. Int J Remote Sens, 1999, 20: 189-194.
[26]  Gross L, Thiria S, Frouin R et al. Artificial neural networks for modelling the transfer function between marine reflectance and phytoplankton pigment concentration. J Geophys Res, 2000, 105: 3483-3495.
[27]  更多...
[28]  Buckton D, O\'Mongain E, Danaher S. The use of neural networks for the estimation of oceanic constituents based on the MERIS instrument. Int J Remote Sens, 1999, 20: 1841-1851.
[29]  Mobley CD. Estimation of the remote-sensing reflectance from above-surface measurements. Appl Opt, 1999, 38: 7442-7455.
[30]  Fell F, Fischer J. Numerical simulation of the light field in the atmosphere-ocean system using the Matrix-Operator method. J Quant Spectrosc Radiat Transfer, 2001, 69: 351-388.
[31]  Morel A. Optical properties of pure water and pure sea water, in Optical Aspects of Oceanography. In: Jerlov NG, Nielsen ES eds. New York, USA: Academic Press, 1974: 1-24.
[32]  Zhang Tinglu, Frank F. An approach to improving the retrieval accuracy of oceanic constituents in Case II waters. Journal of Ocean University of China, 2004, 3(2): 220-224.

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