On improving storm surge forecasting using an adjoint optimal technique
On improving storm surge forecasting using an adjoint optimal technique
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使用伴随优化技术改进风暴潮预报
DOI:
10.1016/j.ocemod.2013.08.009
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发表时间:
2013-12
期刊:
影响因子:
3.2
通讯作者:
Lian Xie
中科院分区:
文献类型:
--
作者:
Yineng Li;Shiqiu Peng;Jing Yan;Lian Xie
A three-dimensional ocean model and its adjoint model are used to simultaneously optimize the initial conditions (IC) and the wind stress drag coefficient (Cd) for improving storm surge forecasting. To demonstrate the effect of this proposed method, a number of identical twin experiments (ITEs) with a prescription of different error sources and two real data assimilation experiments are performed. Results from both the idealized and real data assimilation experiments show that adjusting IC andCdsimultaneously can achieve much more improvements in storm surge forecasting than adjusting IC orCdonly. A diagnosis on the dynamical balance indicates that adjusting IC only may introduce unrealistic oscillations out of the assimilation window, which can be suppressed by the adjustment of the wind stress when simultaneously adjusting IC andCd. Therefore, it is recommended to simultaneously adjust IC andCdto improve storm surge forecasting using an adjoint technique.
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DOI:
10.1007/978-3-642-13914-7_7
发表时间:
2005
期刊:
--
影响因子:
--
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