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投稿时间：2014-02-18 修订日期：2014-06-05
投稿时间：2014-02-18 修订日期：2014-06-05
中文摘要: 利用2.5°×2.5° NCEP/NCAR再分析资料和改进的局地经向环流线性模式，定量诊断了2011年9月5—19日河南省秋季连阴雨天气的形成机理,并利用局地经向环流的垂直分量与降水量滞后相关的分析，研究了这次连阴雨过程主要物理因子的演变特征。结果表明：(1) 潜热加热、平均经向温度平流、平均西风动量的纬向平流和平均纬向温度平流是导致2011年9月河南省秋季连阴雨天气形成的主要物理因子。(2) 潜热加热和平均纬向温度平流是造成此次连阴雨发生的主要物理因子；平均纬向温度平流、平均经向温度平流和平均西风动量的纬向平流是造成此次连阴雨发展或持续的主要物理因子；潜热加热、平均西风动量的纬向平流和平均纬向温度平流是造成此次连阴雨结束的主要物理因子。
中文关键词: 秋季连阴雨， 局地经向环流， 物理因子， 诊断分析
Abstract:Based on 2.5°×2.5° NCEP/NCAR reanalysis data and the improved local meridional circulation model, quantitative diagnosis for the mechanism was performed on a continuous autumn rain event in Henan Province from 5 to 19 September 2011, and evolution characteristics of the main physical factors for the continuous autumn rain event were proposed by means of lag correlation analysis of the upward branch of a local meridional circulation and precipitation over Henan. The results showed that, (1) latent heating, average meridional temperature advection, zonal advection of westerly momentum and average zonal temperature advection are the main physical factors which caused the continuous rainy weather to occur over Henan Province in September 2011. (2) The latent heating and average zonal temperature advection are the main physical factors for the start of the rainy weather; zonal advection of average westerly momentum and average meridional temperature advection as well as average zonal temperature advection are the physical factors for the continuous rainy weather; latent heating, zonal advection of average westerly momentum, average meridional temperature advection and average zonal temperature advection are also the main physical factors for the continous rainy weather ending.
keywords: autumn continuous rainfall, local meridional circulation, physical factors, diagnostic analysis
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基金项目:中国气象局预报员专项(CMAYBY2012 035)、公益性行业(气象)科研专项(GYHY201006041)和中国气象局农业气象保障与应用技术重点开放实验室项目(Z201003)共同资助
| Author Name | Affiliation |
| KONG Haijiang | Key Laboratory of Agrometeorological Safeguard and Applied Technique, CMA, Zhengzhou 450003 Henan Meteorological Observatory, Zhengzhou 450003 |
引用文本：
孔海江,2014.利用局地经向环流对河南一次连阴雨过程的定量诊断[J].气象,40(12):1481-1490.
KONG Haijiang,2014.Quantitative Diagnosis on a Continuous Rain Event in Henan by Using Local Meridional Circulation Model[J].Meteor Mon,40(12):1481-1490.
孔海江,2014.利用局地经向环流对河南一次连阴雨过程的定量诊断[J].气象,40(12):1481-1490.
KONG Haijiang,2014.Quantitative Diagnosis on a Continuous Rain Event in Henan by Using Local Meridional Circulation Model[J].Meteor Mon,40(12):1481-1490.