Evaluation of the Surface Wind Field over Land in WRF Simulations of Hurricane Wilma (2005). Part I: Model Initialization and Simulation Validation
Evaluation of the Surface Wind Field over Land in WRF Simulations of Hurricane Wilma (2005). Part I: Model Initialization and Simulation Validation
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DOI：
10.1175/mwr-d-20-0199.1
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发表时间：
2021-03-01
影响因子：
3.2
通讯作者：
Yunge, Jimmy
中科院分区：
文献类型：
--
作者：
Nolan, David S.;Mcnoldy, Brian D.;Yunge, Jimmy
虽然全球和区域动力模型被用来预测海洋上飓风的路径和强度，但这些模型目前还没有用来预测陆地上的风场和其他影响。这项由两部分组成的研究对飓风威尔玛(2005)在佛罗里达州南部移动时模拟产生的近地表、陆地风场进行了详细的评估。第一部分描述了使用天气研究和预报(WRF)模式产生的两个高分辨率模拟，使用WRF中提供的不同边界层参数化：Mellor-Yamada-Janjic‘(MYJ)方案和Yonsei University(YSU)方案。来自全球预报系统的初始条件是用涡旋虚幻技术操纵的，以修改气旋的初始强度、大小和位置。通过反复试验，我们发现可以使用YSU和MYJ方案成功地模拟出登陆时威尔玛的轨迹、强度和大小。两种方案的风暴大小和结构也与H*WIND和热带气旋地面风分析所诊断的风场有很好的一致性。无论是在水上还是在陆地上，YSU方案在更大的区域内都比MYJ方案有更强的风，但在地表粗糙度较高的地区，特别是在城市地区，地面风更小。这两个方案在陆地和水域产生了非常相似的流入角度。本研究的第二部分对陆上风场进行了更详细的研究。
Although global and regional dynamical models are used to predict the tracks and intensities of hurricanes over the ocean, these models are not currently used to predict the wind field and other impacts over land. This two-part study performs detailed evaluations of the near-surface, overland wind fields produced in simulations of Hurricane Wilma (2005) as it traveled across South Florida. This first part describes the production of two high-resolution simulations using the Weather Research and Forecasting (WRF) Model, using different boundary layer parameterizations available in WRF: the Mellor-Yamada-Janjic' (MYJ) scheme and the Yonsei University (YSU) scheme. Initial conditions from the Global Forecasting System are manipulated with a vortex-bogusing technique to modify the initial intensity, size, and location of the cyclone. It is found possible through trial and error to successfully produce simulations using both the YSU and MYJ schemes that closely reproduce the track, intensity, and size of Wilma at landfall. For both schemes the storm size and structure also show good agreement with the wind fields diagnosed by H*WIND and the Tropical Cyclone Surface Wind Analysis. Both over water and over land, the YSU scheme has stronger winds over larger areas than does the MYJ, but the surface winds are more reduced in areas of greater surface roughness, particularly in urban areas. Both schemes produced very similar inflow angles over land and water. The overland wind fields are examined in more detail in the second part of this study.