globalchange  > 气候减缓与适应
DOI: 10.1002/2017JC013632
Scopus记录号: 2-s2.0-85044293375
论文题名:
An Inverse Model for Estimating the Optical Absorption and Backscattering Coefficients of Seawater From Remote-Sensing Reflectance Over a Broad Range of Oceanic and Coastal Marine Environments
作者: Loisel H.; Stramski D.; Dessailly D.; Jamet C.; Li L.; Reynolds R.A.
刊名: Journal of Geophysical Research: Oceans
ISSN: 21699275
出版年: 2018
卷: 123, 期:3
起始页码: 2141
结束页码: 2171
语种: 英语
英文关键词: coastal and open ocean waters ; inherent optical properties ; inversion ; ocean color remote sensing
Scopus关键词: absorption coefficient ; backscatter ; coastal water ; estimation method ; in situ measurement ; inverse analysis ; marine environment ; numerical model ; ocean color ; open ocean ; optical property ; remote sensing ; sea surface ; seawater ; visible spectrum
英文摘要: We present an inverse model (referred to as LS2) for estimating the inherent optical properties (IOPs) of seawater, specifically the spectral absorption, a(λ), and backscattering, bb(λ), coefficients within the ocean surface layer, from measurements of ocean remote-sensing reflectance, Rrs(λ). The nonwater absorption, anw(λ), and particulate backscattering, bbp(λ), coefficients can be derived after subtracting pure seawater contributions. The LS2 requires no spectral assumptions about IOPs and provides solutions at arbitrary light wavelengths in the visible spectrum independently of one another. As the LS2 can operate with the inputs of Rrs(λ) and solar zenith angle it is applicable to satellite ocean color remote sensing. The model can also operate with additional input of the diffuse attenuation coefficient of downward irradiance, which provides somewhat improved model performance for applications using in situ radiometric measurements as inputs. The evaluation of LS2 with a synthetic data set that is free of measurement errors indicates good performance for IOPs in the visible spectrum, except for anw(λ) in the long-wavelength portion of the spectrum where anw(λ) contributes only a few percent to a(λ) under typical open ocean conditions. The good performance is characterized by a median absolute percent difference between the model-derived and true values of IOPs, which is generally <20%, and the median ratio of model-derived to true values <10%. The satisfactory model performance is also demonstrated through validation analysis based on extensive data sets comprising coincident in situ measurements of Rrs(λ) and IOPs as well as a match-up data set comprising satellite-derived Rrs(λ) and in situ IOP measurements. © 2018. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114341
Appears in Collections:气候减缓与适应

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作者单位: Laboratoire d'Océanologie et de Géosciences, Université du Littoral Côte d'Opale, Université Lille, CNRS, UMR 8187, LOG, Wimereux, France; Hanoi International Laboratory of Oceanography, University of Science and Technology of Hanoi, Vietnam Academy of Science and Technology, Cau Giay, Viet Nam; Marine Physical Laboratory, Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, United States

Recommended Citation:
Loisel H.,Stramski D.,Dessailly D.,et al. An Inverse Model for Estimating the Optical Absorption and Backscattering Coefficients of Seawater From Remote-Sensing Reflectance Over a Broad Range of Oceanic and Coastal Marine Environments[J]. Journal of Geophysical Research: Oceans,2018-01-01,123(3)
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