高原气象

高原气象 >

2020 , Vol. 39 >Issue 1: 48 - 57

DOI: https://doi.org/10.7522/j.issn.1000-0534.2019.00062

论文

2014年8月7日那曲地区对流云降水及其云微物理过程的数值模拟

  • 阴蜀城 ,
  • 李茂善 ,
  • 刘啸然 ,
  • 宋兴宇 ,
  • 吕钊 ,
  • 舒磊 ,
  • 王灵芝 ,
  • 伏薇
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  • 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/气候与环境变化联合实验室, 四川 成都 610225

收稿日期: 2019-04-11

  网络出版日期: 2020-02-28

基金资助

国家重点研发计划项目(2018YFC1505702);国家自然科学基金项目(41675106);成都信息工程大学科研基金项目(KYTZ201721)

收起

Numerical Simulation of Cloud Precipitation and Cloud Microphysical Process in Nagqu Area on August 7, 2014

  • Shucheng YIN ,
  • Maoshan LI ,
  • Xiaoran LIU ,
  • Xingyu SONG ,
  • Zhao Lü ,
  • Lei SHU ,
  • Lingzhi WANG ,
  • Wei FU
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  • School of Atmospheric Sciences/Plateau Atmosphere and Environment Key Laboratory of Sichuan Province/Joint Laboratory of Climate and Environment Change, Chengdu University of Information Technology, Chengdu 610225, Sichuan, China

Received date: 2019-04-11

  Online published: 2020-02-28

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摘要

利用中尺度模式WRF模拟2014年8月7 -8日青藏高原那曲地区一次对流云降水过程。结果表明, WRF模式可以较好的模拟出那曲地区对流云降水过程的降水地区、 降水中心和降水量级。各相态粒子分布在不同的高度层, 分布位置随时间无明显的变化, 其质量密度随时间变化能基本反映地面降水变化的特征。模拟的雨水、 雪和霰的源项表明云水对降水贡献最大, 凝华和碰并过程是雪和霰增长的主要过程, 霰的融化和云水的结合加速了云水向雨水的转化, 导致地面产生降水。从云微物理过程随时间的演变特征可以看出, 冰相粒子过程在高原降水过程中具有十分重要的作用, 整个过程霰对降水的形成有重要作用, 云水和雨水在形成霰的过程中也占有重要的作用。

关键词： 青藏高原; 对流云降水; 云微物理; 数值模拟

本文引用格式

阴蜀城 , 李茂善 , 刘啸然 , 宋兴宇 , 吕钊 , 舒磊 , 王灵芝 , 伏薇 . 2014年8月7日那曲地区对流云降水及其云微物理过程的数值模拟[J]. 高原气象, 2020 , 39(1) : 48 -57 . DOI: 10.7522/j.issn.1000-0534.2019.00062

Abstract

This paper used the mesoscale model WRF to simulate a convective cloud precipitation process in the Nagqu area of the Qinghai-Tibetan Plateau from August 7 to August 8, 2014.The WRF model can better simulate the precipitation, rainfall center and rainfall level of the convective cloud precipitation process in the Nagqu area.The simulation results show that the phase particles are distributed in different height layers, and the distribution position has no obvious change with time.The change of mass density with time can basically reflect the characteristics of ground precipitation changes.The simulated source of rain, snow and graupel indicates that cloud water contributes the most to precipitation.The process of condensation and collision is the main process of snow and graupel growth.The combination of smelting and cloud water accelerates the movement of cloud water to rainwater.Transform to make precipitation on the ground.It can be seen from the evolution characteristics of cloud microphysical processes over time that the ice phase particle process plays an important role in the process of plateau precipitation.In the whole process, graupel plays an important role in the formation of precipitation cloud water and rain water also play an important role in the formation of graupel.

Key words： Qinghai-Tibetan Plat; convective cloud pre; cloud microphysics; numerical simulation

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