| 不同边界层参数化方案对台风“利奇马”模拟的影响研究 |
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| 引用本文： | 仲鹏志,冶磊,李煜斌,吴彬贵,高志球.不同边界层参数化方案对台风“利奇马”模拟的影响研究[J].热带气象学报,2022,38(2):275-289. |
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| 作者姓名： | 仲鹏志 冶磊 李煜斌 吴彬贵 高志球 |
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| 作者单位： | 1.南京信息工程大学大气物理学院，江苏 南京 210044 |
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| 基金项目： | 国家重点研发计划2018YFC1506405国家自然科学基金面上项目41675018国家自然科学基金面上项目42075072 |
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| 摘 要： | 基于中尺度数值模式WRF，对比分析了六种大气边界层物理过程参数化方案(BouLac、MYJ、UW、YSU、ACM2、SH)对台风“利奇马”模拟结果的影响。结果表明，不同边界层方案对“利奇马”路径的模拟结果影响较小，但对其强度和结构演变的模拟结果影响显著。其中，局地闭合方案UW方案模拟的结果最强，局地闭合方案BouLac次之，而局地闭合方案MYJ和三种非局地闭合方案YSU、ACM2和SH的模拟强度都较弱。这些方案中，BouLac模拟的海平面最低气压与实况最为接近。通过对比这些边界层方案的模拟结果发现，由于台风强度的差异受到热力和动力的共同影响，边界层方案如模拟得到的地表潜热通量和边界层中湍流扩散系数较大，将导致较大的径向风和低层辐合，从而模拟得到较强的台风强度；反之，则台风强度较弱。
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| 关 键 词： | 台风“利奇马” 大气边界层方案 WRF数值模拟 台风强度 |
| 收稿时间： | 2020-12-08 |
IMPACT OF DIFFERENT BOUNDARY LAYER PARAMETERIZATION SCHEMES ON THE SIMULATION OF TYPHOON LEKIMA |
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| ZHONG Pengzhi,YE Lei,LI Yubin,WU Bingui,GAO Zhiqiu.IMPACT OF DIFFERENT BOUNDARY LAYER PARAMETERIZATION SCHEMES ON THE SIMULATION OF TYPHOON LEKIMA[J].Journal of Tropical Meteorology,2022,38(2):275-289. |
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| Authors: | ZHONG Pengzhi YE Lei LI Yubin WU Bingui GAO Zhiqiu |
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| Affiliation: | 1.School of Atmospheric Physics, Nanjing University of Information Science & Technology, Nanjing 210044, China2.Tianjin Institute of Meteorological Sciences, Tianjin 300000, China |
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| Abstract: | The present study compared and analyzed the simulation results of Typhoon Lekima based on six optional atmospheric boundary layer parameterization schemes provided by the Weather Research and Forecasting (WRF) mesoscale numerical model, namely, BouLac, MYJ, UW, YSU, ACM2, and SH. The results show that different boundary layer schemes have little influence on the simulated track of Typhoon Lekima, but have a significant impact on the simulated intensity and structural evolution. The intensities simulated by the local closure scheme UW are the strongest, followed by those by the local closure scheme BouLac, while the simulated intensities by the local closure scheme MYJ and the three non-local schemes including YSU, ACM2, and SH are weaker. Among them, the lowest air pressure simulated by BouLac is the closest to the real situation. Through comparison between the results from different boundary layer schemes, it is found that typhoon intensity is affected by both thermal and dynamic factors. The larger the surface latent heat flux and turbulent diffusion coefficient in the boundary layer are simulated, the larger the radial winds and low-level convergence will be generated, and thus the stronger the simulated typhoon, and vice versa. |
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| Keywords: | Typhoon Lekima atmospheric boundary layer scheme WRF numerical simulation typhoon intensity |
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