云微物理参数化方案对青藏高原一次对流云降水模拟的影响  

Evaluation of Different Cloud Microphysical Schemes on Numerical Simulation of Convective Cloud Precipitation in Naqu over the Tibetan Plateau

作　　者：郭艺媛 华维 侯文轩[1] 黄天赐 范广洲 GUO Yi-yuan;HUA Wei;HOU Wen-xuan;HUANG Tian-ci;FAN Guang-zhou(School of Atmospheric Sciences/Plateau Atmosphere and Environment Key Laboratory of Sichuan Province,Chengdu University of Information Technology,Chengdu 610225,China;Nansen-Zhu International Research Centre,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029,China;Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters,Nanjing University of Information Science&Technology,Nanjing 210044,China)

机构地区：[1]成都信息工程大学大气科学学院/高原大气与环境四川省重点实验室,成都610225 [2]中国科学院大气物理研究所竺可桢-南森国际研究中心,北京100029 [3]南京信息工程大学气象灾害教育部重点实验室/气象灾害预报预警与评估协同创新中心,南京210044

出　　处：《科学技术与工程》2021年第4期1262-1271,共10页Science Technology and Engineering

基　　金：国家重点研发计划(2018YFC1505702);第二次青藏高原综合科学考察研究项目(2019QZKK010203);国家自然科学基金(41775072);四川省杰出青年科技人才计划(2019JDJQ0001)。

摘　　要：利用WRF V3.9.1中尺度数值天气预报模式(mesoscale numerical weather forecast model,WRF)7种云微物理参数化方案,对2015年8月13日青藏高原那曲地区一次对流云降水过程进行数值模拟,对比分析不同云微物理参数化方案对降水、环流以及相关物理量模拟的影响。结果表明:WRF模式能够较好地模拟本次对流云降水过程,但不同云微物理参数化方案对降水、环流场等物理量的模拟有明显影响。在降水落区方面,各方案模拟的雨区范围普遍偏大,仅Lin和CAMS方案较好地模拟出那曲中部的降水中心,而对于降水量,除WSM5、Morrison和New Thompson方案模拟值偏低外,其余方案模拟结果与实况值较为一致。此外,不同云微物理参数化方案模拟的降水日变化同样存在差异,大部分方案能够再现本次降水过程的前两次降水峰值,但均未能模拟出第3次降水峰值。对于大气环流和水热物理量场,各方案也可较好地再现其基本特征,但方案间的差异不可忽视。总体来说,Lin方案对本次高原对流云降水过程降水以及环流等相关物理量的模拟效果最佳。Based on mesoscale numerical weather forecast model(WRF V3.9.1 version),a case of convective cloud precipitation in Naqu,Tibet on August 13,2015 was simulated with seven different cloud microphysical parameterization schemes,and the performances of different cloud microphysical parameterization schemes on the precipitation and related physical fields were evaluated and compared.Results show that WRF model could reasonably simulate the convective precipitation case in Naqu,and the differences in simulated precipitation and physical field among schemes were significant.Furthermore,the precipitation areas simulated by each microphysical parameterization scheme were generally overestimated except for Lin and CAMS schemes that simulated the precipitation center over the central Naqu area.Moreover,the amount of precipitation simulated by most schemes was consistent with the observation except for the WSM5,Morrison,and New Thompson,which underestimated the precipitation.Additionally,the daily variation of the precipitation simulated by different cloud microphysical schemes was also different.However,most schemes could show the regional two precipitation peaks,but failed to simulate the third one.For the atmospheric circulation and related physical field,all the schemes could reproduce the basic temporal-spatial pattern in overall,but differences among schemes were obvious,which could not be ignored.It can be seen that the Lin scheme had the best performance to simulate the precipitation and related physical field of the convective cloud precipitation case.

关 键 词：青藏高原 中尺度数值 天气预报模式 云微物理参数化方案 降水模拟 

分 类 号：P426.61[天文地球—大气科学及气象学]