• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文学位 >Impacts of model coupling and resolution on air-sea fluxes for 1993 SuperStorm.
【24h】

Impacts of model coupling and resolution on air-sea fluxes for 1993 SuperStorm.

机译：1993年SuperStorm模型耦合和分辨率对海气通量的影响。

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The high frequency of cyclogenesis in the northwestern Gulf of Mexico is often attributed to warm sea surface temperature. In this thesis, the importance of surface fluxes were documented to understand the air-sea interaction effect on the cyclogenesis and storm intensification by using a coupled ocean-atmosphere model of the extratropical 1993 SuperStorm (12-14 March 1993). This storm, also known as the "Storm of the Century," had a wide-reaching effect on the Northern Gulf of Mexico region and the East Coast of the United States.;In this study, the ocean response and its effects on the storm and upper level troughs and precipitation were examined using the Gulf of Mexico Regional Coupled Modeling System (GoM-CRMS). GoM-CRMS incorporates two-way coupling between the atmospheric model (Weather Research & Forecasting Model, WRF) and the ocean model (Regional Ocean Modeling System, ROMS). The WRF horizontal resolutions studies are 15 km, 5 km, or ~1.7 km resolutions respectively and the ROMS horizontal resolution is 8 km.;Comparisons between Climate Forecast System Reanalysis (CFSR) data, observations and simulations showed that the simulations, especially finer atmospheric resolution simulations, were in better agreement with the observations, root mean square differences (RMSD) between observation and simulations for mean sea level pressure (MSLP), 2-meter air temperature, and wind speed values were ranging between 1 to 4.5 mb, 1.4 to 5.7 ms-1 and 1.2 to 7.2 °C, respectively. Storm tracks for each simulation compared well to the reference storm track extracted from the North American Surface Analysis. Simulations also showed that the latent heat flux is affected by model domain resolution and sea surface temperature temporal resolution. The 500 mb relative vorticity and geopotential height analysis of GoM-CRMS simulation illustrate the shortwave troughs which is leading the storm to intensify and 6 hours accumulated precipitations amount maps that showed the precipitation area located over the downstream of the trough were similar compared to CFSR representation, and were largely insensitive to the SST forcing and model resolution. Therefore, the changes in surface characteristics are largely driven by the differences in resolution and SST coupling, rather than changes aloft.
机译：墨西哥湾西北部回旋形成的频繁发生通常归因于温暖的海面温度。在本文中，通过使用1993年温带超级风暴（1993年3月12日至14日）的海-气耦合模型，记录了表面通量的重要性，以了解海-气相互作用对气旋作用和风暴强度的影响。这场风暴也被称为“世纪风暴”，对墨西哥北部海湾地区和美国东海岸产生了深远的影响。在本研究中，海洋反应及其对风暴的影响使用墨西哥湾区域耦合建模系统（GoM-CRMS）检查了高空谷和降水。 GoM-CRMS在大气模型（天气研究与预报模型，WRF）和海洋模型（区域海洋建模系统，ROMS）之间建立了双向耦合。 WRF水平分辨率研究分别为15 km，5 km或〜1.7 km分辨率，ROMS水平分辨率为8 km .;气候预测系统再分析（CFSR）数据，观测和模拟之间的比较表明，模拟特别是更精细的大气分辨率模拟与观测值更吻合，观测值与模拟值之间的均方根差（RMSD）分别为平均海平面压力（MSLP），2米气温和风速值，范围为1至4.5 mb，1.4分别为5.7 ms-1和1.2至7.2°C。每个模拟的风暴轨迹与从北美表面分析中提取的参考风暴轨迹进行了很好的比较。仿真还表明，潜热通量受模型域分辨率和海表温度时间分辨率影响。 GoM-CRMS模拟的500 mb相对涡度和地势高度分析表明，短波槽导致风暴加剧，并且6小时累积降水量图显示，位于槽下游的降水面积与CFSR表示相似，并且对SST强制和模型解析不敏感。因此，表面特性的变化在很大程度上是由分辨率和SST耦合的差异驱动的，而不是高空变化。

著录项

  • 作者

    Aktas, Duygu.;

  • 作者单位

    The Florida State University.;

  • 授予单位 The Florida State University.;
  • 学科 Meteorology.
  • 学位 M.S.
  • 年度 2015
  • 页码 141 p.
  • 总页数 141
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号