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首页> 外文会议>Assimilation of Remote Sensing and in Situ Data in Modern Numerical Weather and Environmental Prediction Mdeels; Proceedings of SPIE-The International Society for Optical Engineering; vol.6685 >Towards assimilation of ocean colour satellite observation into coastal ocean biogeochemical models: the tropical Fitzroy River Estuary case study
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Towards assimilation of ocean colour satellite observation into coastal ocean biogeochemical models: the tropical Fitzroy River Estuary case study

机译：将海洋彩色卫星观测资料同化为沿海海洋生物地球化学模型：热带菲茨罗伊河河口案例研究

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摘要

We present the first results of the assimilation of ocean colour datasets into coastal ocean biogeochemical models for the tropical Fitzroy Estuary and Keppel Bay system (FEKB) contingent to the Great Barrier Reef lagoon. As part of the Great Barrier Reef Monitoring Program, a regional algorithm for operational delivery of valid coastal ocean colour products was recently developed for FEKB. A new generation of regional specific algorithm for the FEKB system had to be developed for large satellite datasets of the MODIS sensors as the global algorithms failed. Concurrently, a biogeochemical model was developed for the system, built upon a three-dimensional hydrodynamic and sediment dynamic model, and simulating nitrogen and phosphorus dynamics including the dynamics of dissolved organic material as well as pelagic and benthic primary production. One of the aims was to provide estimates of material fluxes from Keppel Bay to the Great Barrier Reef Lagoon. The biogeochemical model was run first with fixed boundary conditions based on the limited in situ measurements, then with boundary conditions derived from satellite datasets using the region-specific algorithm. Several methodologies for linking of remote sensing observations to model variables were evaluated over a period of one year (2004). When remote sensing information was used to inform the boundaries, estimates of material fluxes in the model changed substantially in magnitude and direction.
机译：我们介绍了将海洋颜色数据集同化为沿海大堡礁泻湖的热带Fitzroy河口和吉宝湾系统（FEKB）的沿海海洋生物地球化学模型的第一个结果。作为大堡礁监测计划的一部分，最近为FEKB开发了一种用于有效交付有效沿海颜色产品的区域算法。由于全局算法失败，必须针对MODIS传感器的大型卫星数据集开发针对FEKB系统的新一代区域特定算法。同时，在三维水动力和沉积物动力学模型的基础上，为该系统开发了一个生物地球化学模型，并模拟了氮和磷的动力学，包括溶解的有机物质的动力学以及浮游和底栖初级生产。目的之一是估算从吉宝湾到大堡礁泻湖的物质通量。首先基于有限的原位测量，在固定边界条件下运行生物地球化学模型，然后使用区域特定算法从卫星数据集导出边界条件。在一年的时间内（2004年）评估了几种将遥感观测与模型变量联系起来的方法。当使用遥感信息告知边界时，模型中物质通量的估计值在大小和方向上都发生了很大变化。

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