| 云微物理方案在高原低涡个例模拟中的应用效果分析 |
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| 引用本文： | 董宏昌,周虹,姚瑞.云微物理方案在高原低涡个例模拟中的应用效果分析[J].新疆气象,2021,15(6):9-17. |
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| 作者姓名： | 董宏昌 周虹 姚瑞 |
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| 作者单位： | 定西市气象局,定西市气象局,定西市气象局 |
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| 基金项目： | 甘肃省青年科技基金计划(18JR3RJ427) |
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| 摘 要： | 青藏高原低涡系统东移造成的大范围强降水是夏季高原下游地区常见的天气过程,本文以一次高原低涡东移造成甘肃河东地区强降水天气过程为例,利用NCEP再分析资料为背景场驱动WRF模式进行了数值模拟,并区分是否使用微物理方案和使用何种方案进行了26组实验,结果表明：本案例中对比关闭微物理方案情形,开启微物理方案后对降水量和降水落区的准确性提升并不明显,但能显著提高降雨发生时间的准确性,以及对高原低涡的移动路径和强度模拟能力；对于使用了微物理方案的情形,在降水量级和落区方面Morrison 2-moment方案、WSM5排名靠前,降水时间准确性上Goddar方案、Morrison with aerosol方案、WSM5方案等表现较好,综合分析来看本例中WSM5方案表现最佳,Kessler表现最差。
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| 关 键 词： | WRF模式 高原低涡 云微物理参数方案 |
| 收稿时间： | 2020/6/2 0:00:00 |
| 修稿时间： | 2020/9/15 0:00:00 |
The Effect Analysis of Cloud Microphysical Schemes on the Simulation of Plateau Vortex |
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| Dong Hongchang,Zhou Hong and Yao Rui.The Effect Analysis of Cloud Microphysical Schemes on the Simulation of Plateau Vortex[J].Bimonthly of Xinjiang Meteorology,2021,15(6):9-17. |
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| Authors: | Dong Hongchang Zhou Hong and Yao Rui |
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| Institution: | Dingxi Meteorological Bureau,Dingxi Meteorological Bureau,Dingxi Meteorological Bureau |
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| Abstract: | The large-scale heavy precipitation caused by the eastward shift of the Tibetan plateau vortex is a common weather process in the plateau downstream area in summer. This article takes a plateau vortex that moves out of the plateau and passes through the east of Gansu Hedong as an example, and uses the NCEP reanalysis data as the background field to drive the WRF mode. And by distinguishing whether to use a microphysics scheme, or which microphysics scheme to use, a total of 26 experiments were performed. The results show that the accuracy of precipitation and precipitation distribution is not significantly improved by using microphysical scheme, but it can significantly improve the consistency of rainfall intensity with the actual situation in time dimension, and improved the ability to simulate the movement path and intensity of the plateau low vortex; For the case where the microphysics scheme is used, the Morrison 2-moment scheme and WSM5 rank high in terms of the magnitude of precipitation and the area of fall. The Goddar scheme, Morrison with aerosol scheme, and WSM5 scheme perform better on the accuracy of precipitation time. Comprehensive analysis shows that the WSM5 solution performs best in this example, and Kessler performs worst. |
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| Keywords: | WRF plateau vortex cloud microphysical parameter scheme |
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