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首页> 外文会议>International conference on remote sensing for marine and coastal environments >Fluorescence of dissolved organics in Saginaw Bay as evidenced in the measured upwelling radiance spectra: implications for the water color and accuracy of water quality retrievals
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Fluorescence of dissolved organics in Saginaw Bay as evidenced in the measured upwelling radiance spectra: implications for the water color and accuracy of water quality retrievals

机译：在测量的上升辐射谱中证明了萨格诺瓦湾溶解有机物的荧光：对水色的影响和水质检索的准确性

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The water reflectance spectra, R, obtained in the outer part of Saginaw Bay conjointly with the concentrations of coexisting phytoplankton chlorophyll (chl), suspended sediments (sm) and dissolved organics (doc) showed, in addition to a maximum at 555nm, a distinct maximum at 490-510 nm. Given the measured chl, sm and doc contents, the latter spectral feature can not be simulated considering solely the absorption and elastic scattering events of sun light interactions with the aquatic medium. Inclusion into numerical simulations of the doc fluorescence impact on the upwelling radiance resulted in a nearly perfect fit between the modeled and measured R-spectra. The impact of doc fluorescence on the accuracy of water quality retrieval was further assessed using the Levenberg-Marquardt multivariate optimization technique. It is shown that in the absence of sm, waters rich in either chl or doc the upwelling radiance can be significantly altered due to fluorescence, which is conductive to substantial water quality retrieval errors.
机译：除了共存的浮游植物叶绿素（CHL），悬浮沉积物（SM）和溶解有机物（DOC）的浓度，在Saginaw海湾的外部中获得的水反射光谱r且溶解有机物（Doc），除了555nm，是一个明显的最大在490-510 nm。鉴于测量的CHL，SM和DOC含量，可以考虑与水生介质的太阳光相互作用的吸收和弹性散射事件来模拟后一谱特征。将DOC荧光影响的数值模拟纳入上升辐射的荧光影响，导致建模和测量的R光谱之间几乎完美的拟合。使用Levenberg-Marquardt多变量优化技术进一步评估了DOC荧光对水质检索准确性的影响。结果表明，在没有SM的情况下，由于荧光，可以显着改变富含CHL或DOC的水的水，这导致了大量水质检索误差。

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