现代农业科技Issue(22)：216-219,222,5.
“2012·9·27”环渤海强对流天气监测及成因分析
Monitoring and Genetic Analysis for Severe Convective Weather over Bohai Sea at Sept. 27th 2012
摘要
Abstract
Using some data and means,such as infrared cloud image of satellite FY-2E,weather radar puzzles,strong convection of NMC monitoring hourly,meteorological data on the island and numerical model products and other information,etc.,the strong convective weather process over Bohai Sea from Apr.27th in 2012,12 to 20(CST)was analyzed.The results showed that the low vortex system southeast moved in the Eastern Inner Mongolia,then it took in Hebei Province,with dry and cold intrusion,and front pocket of warm air and surface cold front overlay .As to the index changing,the value of vertical wind shear(between 0 km and 6 km)was greater than 20m/s at 800 am,the value on K index was 33℃and SI index was-3.8℃,Cape reaches to 1 883 J/kg at 200 pm.these factors resulted to turning out the severe convective weather.At the same time,the monitoring showed the MCS pixels was produced into Beijing and the northern of Hebei at 1200 am,dynamic feature of it on synchronous satellite cloud image and the value of TBB was-65~-25℃,The strength of convective clouds banded was alternating from 3 hours to 6 hours,The strongest periods of severe convective weather in the West Coast of Bohai Sea was during 200 pm to 1700 pm.When it appeared two squall lines,radar echo intensity was greater than 50 dBz.Between them,the temperature of the squall line which impacted Qinhuangdao dropped 10℃in 1 hour,and the pressure dropped 2.7 hPa;The main body of MCS broken after it got into the sea in the 700 pm,and it re-strengthened in the Laizhou Bay and Dalian Peninsula from 800 pm to 900 pm.The West Coast of Bohai Sea met temporary strong wind and hail,and the East Coast met heavy precipitation and the thunder over 8 hours.关键词
环渤海强对流/卫星与雷达同步监测/成因分析/可预报性/2012年9月27日Key words
area of Bohai sea severe convective/synchronous satellite and radar monitoring/cause analysis/predictability分类
天文与地球科学引用本文复制引用
周艳军,郭鸿鸣..“2012·9·27”环渤海强对流天气监测及成因分析[J].现代农业科技,2014,(22):216-219,222,5.基金项目
中国气象局预报员专项项目（CMAYBY2013-007）；公益性行业项目“环渤海高影响天气预报中的关键技术研究”（GYHY201106006）；河北省气象科研开发项目“渤海强对流天气监测与预报预警技术研究”（2011ky30）。 （）
