主办单位：中国气象局沈阳大气环境研究所
国际刊号：ISSN 1673-503X
国内刊号：CN 21-1531/P
气象与环境学报

气象与环境学报 ›› 2014, Vol. 30 ›› Issue (5): 1-6.doi:

• 论文 •    下一篇

WRF模式不同微物理过程对东北降水相态预报的影响

崔锦1  周晓珊1  阎琦2  张爱忠3  李得勤1 宋国云4 陈雨4   

  1. 1. 中国气象局沈阳大气环境研究所，辽宁 沈阳 110166；2. 辽宁省气象台，辽宁 沈阳 110166；3. 沈阳军区空军气象中心，辽宁 沈阳 110015；4. 辽宁省气象信息中心， 辽宁 沈阳 110166
  • 出版日期:2014-11-01 发布日期:2014-11-01

Impact of different microphysical processes of WRF model on precipitation phase forecasting in Northeast China

CUI Jin1 ZHOU Xiao-shan1 YAN Qi2 ZHANG Ai-zhong3 LI De-qin1 SONG Guo-yun4 CHEN Yu4   

  1. 1.Shenyang Institute of Atmospheric Environment, China Meteorolgical Administration, Shenyang 110166, China; 2. Liaoning Meteorological Observatory, Shenyang 110166, China; 3. Meteorological Center of Air Force, Shenyang Military Region, Shenyang 110015, China; 4. Liaoning Meteorological Information Center, Shenyang 110166, China
  • Online:2014-11-01 Published:2014-11-01

PDF (PC)

513

被引次数

6

摘要：

为了研究不同微物理过程对中尺度模式降水相态预报的影响，利用中尺度模式WRF（V3.1）和NCEP再分析资料，采用WSM 6方案、Goddard方案和New Thompson方案等3种不同微物理过程参数化方案，对2006—2008年东北地区存在降水相变的11次降水过程进行了敏感性试验。通过对降水和云微物理特征影响的分析，了解不同方案间的预报差异。结果表明：不同微物理方案对降水落区和强度预报影响不明显，而降水相态对微物理参数化方案较为敏感，主要表现在对雨区和雨夹雪区预报影响显著。从总体预报效果来看Goddard方案表现较好。选用不同微物理参数化方案模拟的底层大气云微物理特征存在较大的差别，正是这种差别直接导致了降水相态预报间的差异。

关键词: WRF模式, 微物理过程, 降水相态预报

Abstract:

In order to study the impact of different microphysical processes of WRF model on precipitation phase forecasting, 11 precipitation processes with precipitation phase change in the Northeast China from 2006 to 2008 were simulated based on WRF V3.1 and NCEP reanalysis data. Studies were carried out by three microphysical schemes, i.e. a WSM 6 scheme, a Goddard scheme and a New Thompson scheme. According to analysis of precipitation phase and cloud microphysical characteristics, forecast differences existed in the different schemes were obtained. The results show that effects of different microphysical schemes on precipitation falling area and precipitation intensity are not significant, while precipitation phase is sensitive to microphysical schemes, especially for forecasting of falling area of rain and sleet. The Goddard scheme is the best among all schemes according to results of overall forecast. The simulated cloud microphysical features of atmosphere in the bottom layer have singinficant differences among three schemes, which lead directly to the difference of precipitation phase forecast.

Key words: WRF model, Microphysical process, Precipitation phase forecast