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当前位置: 首页 > 文章 > 山东极端强降水环境参数特征分析 江西农业学报 2015 (6) 113-117+124
Position: Home > Articles > Characteristic Analysis of Environmental Parameters of Extremely Heavy Precipitation in Shandong Acta Agriculturae Jiangxi 2015 (6) 113-117+124

山东极端强降水环境参数特征分析

作  者：
万明波;刁秀广;李静;孟宪贵
单  位：
山东省气象台
关键词：
山东;极端强降水;环境参数;特征;分析
摘  要：
利用常规天气资料、常规探空资料对山东地区2003~2012年共11次极端强降水过程的环境参数特征进行了分析,结果表明:500 h Pa以下含有丰富的水汽,地面、850 h Pa、700 h Pa和500 h Pa露点温度分别达到23、17、8和-7℃以上,温度露点差基本上在3℃以内;大气处于不稳定状态,K指数≥37℃,总指数TT≥41℃,抬升指数LI<0℃;大气具有一定的能量积累,CAPE≥500 J/kg;0℃层高度都在5000 m以上;反射率因子高值区基本上处于6 km以下;低层有明显的西南急流。
译  名：
Characteristic Analysis of Environmental Parameters of Extremely Heavy Precipitation in Shandong
作  者：
WAN Ming-bo;DIAO Xiu-guang;LI Jing;MENG Xian-gui;Shandong Weather Forecast Office;
关键词：
Shandong;;Extremely heavy precipitation;;Environmental parameter;;Characteristics;;Analysis
摘  要：
The characteristics of environmental parameters of 11- time extremely heavy precipitation processes in Shandong from 2003 to 2012 were analyzed by using conventional weather data and routine sounding data. The results showed that: abundant water vapor existed below 500 h Pa,the dew point temperature on the ground,850 h Pa,700 h Pa and 500 h Pa reached over 23 ℃,17 ℃,8 ℃ and- 7 ℃ respectively,and the difference value between temperature and dew point temperature was generally within3 ℃. The atmosphere was in an unstable state,K- index was more than or equal to 37 ℃,total index TT was higher than or equal to 41 ℃,and lifting index LI was less than 0 ℃. The atmosphere accumulated a certain energy,and CAPE was more than or equal to 500 J / kg. The height of 0 ℃ layer was above 5000 m. The high- reflectivity region was basically under 6 km. There was obvious southwest jet stream in lower layer.

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