| 摘要: |
| 利用常规气象观测资料、气象自动站观测资料、欧洲中心ERA Interim再分析资料对2006—2015年广西飞机增雨作业期的288次小到中雨天气过程进行分析，结果表明：主要影响系统为高压后部回流、切变线、南支槽、西南涡东移、台风、西南季风影响型，其中前3类影响型占92.8%；中低层水汽主要来源于孟加拉湾、南海、东海，其中700 hPa水汽主要来源于孟加拉湾，850 hPa水汽来源于南海、孟加拉湾，925 hPa水汽来源于东海、南海；925 hPa、850 hPa出现急流的次数较少，低空水汽和能量向广西输送的强度较弱。对3种主要影响天气类型的典型个例进行分析，发现广西境内大部地区垂直累积云液态水含量≥0.05 kg/m2，说明云水含量充足，有利于飞机增雨作业的开展。 |
| 关键词: 人工增雨；天气形势；水汽 |
| DOI： |
| 投稿时间：2019-05-14 |
| 基金项目:广西重点项目（桂气科2019Z02）：广西区域空中云水资源精细化分析评估技术及关键特征参量优化研究 |
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| Weather Situation and Water Vapor Analysis of Artificial Precipitation Enhancement in Guangxi |
| ZHAN Yingyu,CHENG Peng,HUANG Xiaohui,WEI Zengan,LI Linhong |
| (Weather Modification Office of Guangxi Zhuang Autonomous Region, Nanning 530022 , China) |
| Abstract: |
| Using conventional meteorological observation data, automatic meteorological station observation data and ERA Interim reanalysis data of the European Center, 288 precipitation processes of light to moderate rain which happened during the period of aircraft rainfall enhancement operation in Guangxi, are analyzed. The results show that major influence system types are back flow of high pressure, shear line, southern branch trough, eastward moving of southwest vortex, typhoon and southwest monsoon, and the proportion of the total first three types is 92.8%. The main water vapor of the precipitation processes in the lower layer mainly comes from the Bay of Bengal, the South China Sea and the East China Sea. The water vapor of layer 700 hpa mainly comes from the Bay of Bengal, layer 850 hPa comes from the South China Sea and Bay of Bengal, and layer 925 hPa comes from the East China Sea and South China Sea. Few jets happened in layer 925 hPa and 850 hPa, and weak intensity of low-level water vapor and energy transported to Guangxi. The typical cases of high-pressure back-flow type, shear line type and South Branch trough type in 2013—2015 are analyzed, and it is found that value of over 0.05 kg/m2 of vertical integral cloud liquid water occupying a large part of Guangxi, which indicates that enough cloud water content is conducive to the development of aircraft precipitation enhancement operations. |
| Key words: artificial precipitation enhancement； weather situation； water vapor |
