Assessing the potential of SeaWiFS and MODIS for estimating chlorophyll concentration in turbid productive waters using red and near-infrared bands
Assessing the potential of SeaWiFS and MODIS for estimating chlorophyll concentration in turbid productive waters using red and near-infrared bands
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DOI：
10.1016/j.rse.2005.02.007
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发表时间：
2005-05-30
影响因子：
13.5
通讯作者：
Holz, JC
中科院分区：
文献类型：
--
作者：
Dall'Olmo, G;Gitelson, AA;Holz, JC
生物光学算法用于远程估计一类水域的叶绿素a浓度(Chl)，利用蓝色和绿色光谱区域的上行辐射。在混浊的生产性水体中，与Chl无关的其他成分吸收和散射这些光谱区域中的光。因此，到目前为止，从卫星传感器上准确估计混浊生产水域中的Chl是不可行的。这项研究的主要目的是评估近红外(NIR)和红色反射比(NIR)在多大程度上可以应用于海洋广域视场传感器(ScaWiFS)和中等成像光谱仪(MODIS)来估计生产性浑浊水域的Chl。为了实现这一目标，在光学参数变化较大的25个站(即4个站)收集了25个站的遥感反射光谱和相关的水成分
Bio-optical algorithms for remote estimation of chlorophyll-a concentration (Chl) in case-1 waters exploit the upwelling radiation in the blue and green spectral regions. In turbid productive waters other constituents, that vary independently of Chl, absorb and scatter light in these spectral regions. As a consequence, the accurate estimation of Chl in turbid productive waters has so far not been feasible from satellite sensors. The main purpose of this study was to evaluate the extent to which near-infrared (NIR) to red reflectance ratios could be applied to the Sea Wide Field-of-View Sensor (ScaWiFS) and the Moderate Imaging Spectrometer (MODIS) to estimate (Chl in productive turbid waters. To achieve this objective, remote-sensing reflectance spectra and relevant water constituents were collected in 25 1 stations over takes and reservoirs with a wide variability in optical parameters (i.e. 4