QUANTITATIVE REMOTE-SENSING METHODS FOR REAL-TIME MONITORING OF INLAND WATERS QUALITY
QUANTITATIVE REMOTE-SENSING METHODS FOR REAL-TIME MONITORING OF INLAND WATERS QUALITY
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DOI：
10.1080/01431169308953956
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发表时间：
1993-05-10
影响因子：
3.4
通讯作者：
KAISER, A
中科院分区：
文献类型：
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作者：
GITELSON, A;GARBUZOV, G;KAISER, A
内陆水质星载遥感基于这样的假设：反射率与相关水质成分浓度之间的关系是先验已知的。本文报道了对前苏联、匈牙利、德国和保加利亚 20 多个水体的上升流和下降流辐照度以及浮游植物叶绿素-a、悬浮物和溶解有机物浓度的同步测量。测量涵盖水体的不同营养状态（从贫营养到肥营养）以及不同的气候条件。叶绿素-a 的范围为 0.1 至 350 Mg m-3，悬浮物为 0.1 至 66 mg l-1，溶解有机物在波长 380 nm 处的吸收为 0.1 至 12 m-1。所有辐射测量均使用单个辐射计在 400-750 nm 范围内进行，光谱分辨率优于 1 nm。因子和特征分析，以及水质参数与模拟光谱带比率的多光谱统计模型，使得确定适当的反射率函数以估计浮游植物叶绿素-a、悬浮物和溶解有机物浓度成为可能。使用一组测量来建立光谱反射率和上述水质参数之间的经验关系。其他组的测量用于测试这些关系。估计的最大误差为：叶绿素-a 为 3 mg m-3，悬浮物为 4 mg l-1，溶解有机物为 0.065 mg Cm-3（每立方米碳毫克数）。结果用于开发监测内陆水域富营养化过程的适当方法，并测试从空间监测内陆水质的概念。
Spaceborne remote sensing of inland water quality is based on the assumption that the relationship between the reflectance and the concentration of relevant water quality constituents is known a priori. Simultaneous measurements of the- upwelling and downwelling irradiances, along with phytoplankton chlorophyll-a, suspended matter and dissolved organic matter concentration at over 20 water bodies throughout former USSR, Hungary, Germany and Bulgaria, are reported in this article. The measurements cover different trophic states of water bodies, from oligotrophic to hypertrophic, and different climatic conditions. The range of chlorophyll-a is 0.1 to 350 Mg m-3, suspended matter is 0.1 to 66 mg l-1, and dissolved organic matter absorption at the wavelength 380 nm is 0.1 to 12 m-1.All radiometric measurements are performed with a single radiometer in the 400-750 nm range with spectral resolution better than 1 nm. Factor and signature analysis, as well as multi-spectral statistical modelling of water quality parameters versus simulated spectral band ratios, makes possible the determination of appropriate functions of reflectance for estimating phytoplankton chlorophyll-a, suspended matter, and dissolved organic matter concentrations. One set of measurements is used to develop empirical relationships among the spectral reflectance and the above-mentioned water quality parameters. The other sets of measurements are used to test these relationships. The maximum error of estimation are: 3 mg m-3 for chlorophyll-a, 4 mg l-1 for suspended matter and 0.065 mg Cm-3 (mg of carbon per m3) for dissolved organic matter.The results are used to develop an appropriate methodology for monitoring of eutrophication process in inland waters and to test concepts of inland water quality monitoring from space.