arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 1304.6535physics.ao-ph
收藏

气象强迫资料对黑海历史风暴重建的影响

The influence of the meteorological forcing data on the reconstructions of historical storms in the Black Sea

Vasko Galabov, Anna Kortcheva

摘要:

本文研究了不同气象强迫源对海岸波浪和风暴潮模式的适用性,这些模式为海岸预警系统(EWS)提供业务海洋预报,并用于重建历史风暴。历史风暴潮的重建是海岸带自然灾害易损性评价的途径之一。我们评估的重要性,输入气象信息的上述类型的海岸模型。对于两个有据可查的历史风暴,造成重大损害,沿保加利亚海岸,我们模拟了显着的波高和海平面变化,使用SWAN波模型和风暴潮模型。风场和平均海平面气压场是从欧洲中期预报中心(ECMWF)的ERA中期再分析和高分辨率有限区域数值天气预报模式ALADIN的输出中提取的。总体结论是,对于成功的历史风暴重建ERA中期和ERA 40再分析是有价值的气象强迫源,但由于其在空间和时间分辨率方面的局限性,建议使用动态降尺度的再分析数据来产生更高的空间和时间分辨率的气象场。

英文摘要:

The present article is a study of the applicability of different sources of meteorological forcing for the coastal wave and storm surge models, which provide the operational marine forecasts for the coastal early warning systems (EWS) and are used for reconstructions of historical storms. The reconstruction of historical storms is one of the approaches to the natural coastal hazard vulnerability assessment. We evaluate the importance of the input meteorological information for the mentioned types of coastal models. For two well documented historical storms, that caused significant damages along the Bulgarian coast we simulate the significant wave heights and sea level change, using SWAN wave model and a storm surge model. The wind and mean sea level pressure fields, which are used in the present study, are extracted from the ERA Interim reanalysis of the European Center for Medium range Forecasts (ECMWF) and from the output of the high resolution limited area numerical weather prediction model ALADIN. The overall conclusion is that for the successful historical storms reconstructions ERA Interim and ERA40 reanalysis are valuable source of meteorological forcing, but due to their limitations in terms of spatial and temporal resolution, it is recommended to produce a higher spatial and temporal resolution meteorological fields, using dynamical downscaling of the reanalyzed data.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑