Remote-sensing reflectance and true colour produced by a coupled hydrodynamic, optical, sediment, biogeochemical model of the Great Barrier Reef, Australia: Comparison with satellite data
Remote-sensing reflectance and true colour produced by a coupled hydrodynamic, optical, sediment, biogeochemical model of the Great Barrier Reef, Australia: Comparison with satellite data
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DOI：
10.1016/j.envsoft.2015.11.025
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发表时间：
2016-04-01
影响因子：
4.9
通讯作者：
Wild-Allen, Karen A.
中科院分区：
文献类型：
--
作者：
Baird, Mark E.;Cherukuru, Nagur;Wild-Allen, Karen A.
水生态地球化学模型是了解和预测人类活动对水透明度影响的重要工具。在本文中，我们开发了一个光谱分辨的光学模型，产生遥感反射率作为深度分辨的海洋地球化学模型属性，如浮游植物生物量，悬浮泥沙浓度和底栖反射率的函数。我们比较模拟的遥感反射率从4公里分辨率耦合水动力学，光学，沉积物和地球化学模型配置大堡礁与观测到的遥感反射率从MODIS传感器在8个海洋颜色波段。光学模型是足够准确的捕捉遥感反射率，将产生从一个特定的地球化学状态。因此，模拟和观测的遥感反射率之间的不匹配提供了一个很好的度量耦合地球化学模型的模型评估。最后，我们结合联合收割机的模拟遥感反射率在一个红色/绿色/蓝色的颜色模型，以产生模拟的真彩色图像在2011年2月的热带气旋雅西通过。(C)版权所有© 2015 Elevier Ltd.
Aquatic biogeochemical models are vital tools in understanding and predicting human impacts on water clarity. In this paper, we develop a spectrally-resolved optical model that produces remote-sensing reflectance as a function of depth-resolved biogeochemical model properties such as phytoplankton biomass, suspended sediment concentrations and benthic reflectance. We compare simulated remote sensing reflectance from a 4 km resolution coupled hydrodynamic, optical, sediment and biogeochemical model configured for the Great Barrier Reef with observed remote-sensing reflectance from the MODIS sensor at the 8 ocean colour bands. The optical model is sufficiently accurate to capture the remote-sensing reflectance that would arise from a specific biogeochemical state. Thus the mismatch between simulated and observed remote-sensing reflectance provides an excellent metric for model assessment of the coupled biogeochemical model. Finally, we combine simulated remote-sensing reflectance in a red/green/blue colour model to produce simulated true colour images during the passage of Tropical Cyclone Yasi in February 2011. (C) 2015 Elevier Ltd. All rights reserved.