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首页> 外文期刊>Journal of Geophysical Research. Biogeosciences >Estimation of Transmittance of Solar Radiation in the Visible Domain Based on Remote Sensing: Evaluation of Models Using In Situ Data
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Estimation of Transmittance of Solar Radiation in the Visible Domain Based on Remote Sensing: Evaluation of Models Using In Situ Data

机译：基于遥感的可见域中太阳辐射透射率的透射率：使用原位数据评估模型

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摘要

The transmittance of solar radiation in the oceanic water column plays an important role in heat transfer and photosynthesis, with implications for the global carbon cycle, global circulation, and climate. Globally, the transmittance of solar radiation in the visible domain (approximate to 400-700 nm) (TRVIS) through the water column, which determines the vertical distribution of visible light, has to be based on remote sensing products. There are models centered on chlorophyll-a (Chl) concentration or Inherent Optical Properties (IOPs) as both can be derived from ocean color measurements. We present evaluations of both schemes with field data from clear oceanic and from coastal waters. Here five models were evaluated: (1) Morel and Antoine (1994) (MA94), (2) Ohlmann and Siegel (2000) (OS00), (3) Murtugudde et al. (2002) (MU02), (4) Manizza et al. (2005) (MA05), and (5) Lee et al. () (IOPs05), where the first four are Chl-based and the last one is IOPs-based, with all inputs derived from remote sensing reflectance. It is found that the best performing model is the IOPs05, with Unbiased Absolute Percent Difference (UAPD) approximate to 23%, while Chl-based models show higher uncertainties (UAPD for MA94: approximate to 54%, OS00: approximate to 133%, MU02: approximate to 56%, and MA05: approximate to 39%). The IOPs-based model was insensitive to the type of water, allowing it to be applied in most marine environments; whereas some of the Chl-based models (MU02 and MA05) show much higher sensitivities in coastal turbid waters (higher Chl waters). These results highlight the applicablity of using IOPs products for such applications.
机译：海洋水柱中太阳辐射的透射率在热传递和光合作用中起重要作用，具有对全球碳循环，全局循环和气候的影响。在全球范围内，通过水柱的可见域中的太阳辐射（近似为400-700nm）（TRVIS），这决定了可见光的垂直分布，必须基于遥感产品。由于两者都可以从海洋颜色测量中源，有叶绿素-A（CHL）浓度或固有光学性质（IOPS）的型号。我们对来自清空海域和沿海水域的现场数据提供了两种方案的评估。这里评估了五种模型：（1）羊毛和肉毒碱（1994）（MA94），（2）OHLMANN和Siegel（2000）（OS00），（3）Murtugudde等。 （2002）（mu02），（4）Manizza等人。 （2005）（MA05）和（5）LEE等人。 （）（IOPS05），前四个是基于CHL的，最后一个是基于IOPS的，所有输入都源于遥感反射率。结果发现，最好的执行模型是IOPS05，无偏见的绝对百分比差异（UAPD）近似为23％，而基于CHL的模型显示出更高的不确定性（MA94的UAPD：近似为54％，OS00：近似为133％， MU02：近似为56％，MA05：近似为39％）。基于IOPS的模型对水的类型不敏感，允许其在大多数海洋环境中应用;虽然一些基于CHL的模型（MU02和MA05）在沿海混浊水域（较高的CHL水域）显示了更高的敏感性。这些结果突出了使用IOPS产品进行此类应用的适用性。

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