Beauty of Math in Ocean Optics:Two-Stream Equations ofAas
Beauty of Math in Ocean Optics:Two-Stream Equations ofAas
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DOI：
10.3788/aos202242.1200004
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Zhongping Lee
中科院分区：
文献类型：
--
作者：
Zhongping Lee
Solar radiation in the visible domain can penetrate aquatic environment,which drives photon-related processes including phytoplankton photosynthesis and heating of the upper water column.In addition,the scattered light in the water column can emerge(escape)from water,which forms the bases to sense properties in aquatic environments using sensors onboard satellites.Thus,an understanding of the processes and properties related to the propagation of solar radiation in-and-out of water is a basic requirement in ocean optics and ocean color remote sensing.The spatial(and spectral for inelastic scattering)variation of radiance is governed by the radiative transfer equation,which is not directly applicable to infer in-water optical properties or to describe the relationships between the optical properties measured in the field and inherent optical properties related to environmental properties. Through simple mathematical derivations,or manipulations,of the radiative transfer equation (RTE),Aas transferred the RTE into a set of two equations describing the change of upwelling and downwelling irradiance with depth,and further obtained concise analytical relationships between the apparent and inherent optical properties. These equations not only form the basic theoretical relationships in ocean optics,but also lay the foundation of semianalytical algorithms in ocean color remote sensing.
