Physics of Ocean Color Remote Sensing
Physics of Ocean Color Remote Sensing
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海洋颜色遥感物理
DOI：
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发表时间：
1983
期刊：
影响因子：
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通讯作者：
A. Morel
中科院分区：
文献类型：
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作者：
H. Gordon;A. Morel
典型的水彩遥感情况如图 1 所示，其中卫星辐射计瞄准海面某个点（标记为 PIXEL），从而测量从地球大气层发出的辐射亮度 LT(θ,O)。该测量的目的是确定水中各种成分的浓度（例如浮游植物、总悬浮物质、黄色物质等）。辐射率 LT(θ,O) 由从大气、海洋和海面多次散射的光子组成，因此以复杂的方式取决于大气的光学特性（及其随高度的分布）和海洋的光学特性（及其随深度的分布）。通过对海洋-大气系统中的辐射传输进行一系列蒙特卡洛模拟（Gordon，1976），该系统的特征是大气中所有相关光学特性的真实垂直分布，以及海洋的一组代表性光学特性（假设均匀），出现了三个简化的事实。
A typical water color remote sensing situation is depicted in Fig. 1, which shows the satellite’s radiometer aiming toward a spot on the sea surface (marked PIXEL), hence measuring the radiance LT(θ,O) emerging from the Earth’s atmosphere. The goal of this measurement is to determine the concentration of the various constituents of the water (e.g., phytoplankton, total suspended material, yellow substances, etc.). The radiance LT(θ,O) consists of photons which have been multiply scattered from the atmosphere, ocean, and sea surface, and thus depends in a complex manner on the optical properties of the atmosphere (and their distribution with altitude) and on the optical properties of the ocean (and their distribution with depth). Through a series of Monte Carlo simulations (Gordon, 1976) of radiative transfer in an ocean-atmosphere system characterized by realistic and vertical distributions of all pertinent optical properties in the atmosphere, and a representative set of optical properties for the ocean (assumed homogeneous), three simplifying facts emerge.