再分析风场修正及其在渤海湾典型温带风暴潮模拟中的应用  

Optimization of reanalysis wind field and its application in the simulation of extratropical storm surge in the Bohai Bay

作　　者：范书鸣 储鏖 蒋勤[1] FAN Shu-ming;CHU Ao;JIANG Qin(College of Harbour,Coastal and Offshore Engineering,Hohai University,Nanjing 210000 China)

机构地区：[1]河海大学港口海岸与近海工程学院,江苏南京210000

出　　处：《海洋预报》2021年第4期61-68,共8页Marine Forecasts

基　　金：国家重点研发课题(2018YFC0407500)。

摘　　要：选取渤海湾为研究区域,对塘沽站实测风场与再分析风场进行相关性分析,发现两者有一定的偏离。根据线性拟合关系对站点风速进行修正,并根据距离权重修正渤海湾区域再分析风场,采用修正后的风场驱动模型模拟温带风暴潮,其模拟结果在增水趋势、最大增水方面的准确度有明显的提升。研究结果表明温带风暴潮的数值模拟采用再分析风场驱动时需进行适当的修正和优化。This paper selects the Bohai Bay as the study area,and analyzes the correlation between observed wind field and reanalysis wind field of Tanggu station.It is found that there is a certain deviation between the reanalysis and observed wind field.The wind speed of Tanggu station is corrected using linear fitting relationship,and the reanalysis wind field in the Bohai Bay area is corrected based on distance weight.The simulation results of the extratropical storm surge model driven by the revised wind field show that the accuracy of the trend and maximum water increase is significantly improved.It can be conclude that the reanalysis wind field needs to be properly corrected and optimized when it is used to simulate the extratropical storm surge.

关 键 词：再分析风场 风场修正 温带风暴潮 数值模拟 渤海湾 

分 类 号：P732[天文地球—海洋科学] P731.23