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气象:2011,37(5):576-582
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T213/T639数值产品在河南省 雷电潜势预报中的释用
(1.中国气象局河南省农业气象保障与应用技术重点实验室, 郑州 450003;2. 河南省气象台, 郑州 450003;3.河南省气象台, 郑州 450003)
Interpretation and Use of T213 and T639 Output Products on the Lightning Potential Forecast in Henan
(1.CMA/Henan Key Laboratory of Agrometeorological Ensuring and Applied Technique, Zhengzhou 450003;2. Henan Provincial Meteorological Observatory, Zhengzhou 450003;3.Henan Provincial Meteorological Observatory, Zhengzhou 450003)
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投稿时间:2010-03-02    修订日期:2010-07-25
中文摘要: 利用河南省地面观测站1960—2005年的雷暴观测资料分析了全省雷暴活动的时空分布特征。根据雷暴活动特征和雷暴天气产生的环境场条件,基于T213/T639数值模式输出产品计算了多个大气动力、热力参数,经诊断分析及相关性分析后选取与地闪关系较好的对流稳定度指数、850 hPa假相当位温、400~850 hPa垂直风切变等5个参数作为预报因子,采用ADTD地闪定位资料和T213/T639数值模式输出产品,分别建立雷电潜势预报模型。雷电潜势预报方法于2008—2009年在河南省汛期业务中应用评估表明,基于T213/T639数值产品的雷电潜势预报技术方法可以为河南省雷电天气的落区预报提供客观定量的参考和依据,且两者都对低槽切变型预报效果最好。
Abstract:The thunderstorm data from surface observation station from 1960 to 2005 are used to analyze the temporal and spatial characteristics of thunderstorm activities in Henan. According to the activity characteristics and the environmental conditions of the thunderstorm, plenty of the atmospheric dynamical and thermal parameters are calculated based on the numerical products from T213 and T639. Through the diagnostic analyses and correlative analyses, 5 parameters with better relation to the ground flash are picked as forecasting indexes, that is, the convective stability index, the pseudo equivalent potential temperature on 850 hPa, and the vertical wind shear between 400 hPa to 850 hPa and so on. Then, the ADTD ground flash monitoring data and the numerical models T213 and T639 output data, are utilized to establish the model for the lightning potential forecast. The potential forecast method is used in the operation during the flood period from 2008 to 2009, and the assessment result shows that the lightning potential forecasting method based on the numerical data of T213 and T639 can provide objective and quantitative reference and basis for the lightning occurring area forecast of Henan and the forecasting effects for the trough and shear pattern are both good based on models T213 and T639 to different weather patterns.
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基金项目:河南省气象局重点科研项目“雷电潜势预报系统及预警技术研究”(Z200703)资助
引用文本:
王新敏,张霞,徐文明,鲁坦,2011.T213/T639数值产品在河南省 雷电潜势预报中的释用[J].气象,37(5):576-582.
WANG Xinmin,ZHANG Xia,XU Wenming,LU Tan,2011.Interpretation and Use of T213 and T639 Output Products on the Lightning Potential Forecast in Henan[J].Meteor Mon,37(5):576-582.