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北京地区雷暴大风日θ_e平均廓线特征 被引量:26

θ_e Profile Characteristics of Downburst Days in Beijing Area
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摘要 利用NCEP再分析资料对北京地区 1 999~ 2 0 0 3年 7~ 8月出现的 2 4个雷暴大风日相当位温θe 的平均廓线进行了研究。结果表明 ,在对流层底层有一个θe 的极大值 ,在对流层中层 ( 50 0~ 6 6 0hPa)θe 达到其极小值。 The reanalysis of NCEP data are used to analyze the average θ e profile characteristics of downburst days in July. and Aug. from 1999 to 2003 in Beijing area. The results show that there is a θ e max at the bottom of troposphere. In addition, there is a θ e min in the middle of troposphere (500—660hPa).
出处 《气象》 CSCD 北大核心 2004年第11期35-37,共3页 Meteorological Monthly
基金 国家自然科学基金项目"华北深对流天气观测分析和预报技术研究"资助
关键词 雷暴大风 廓线 对流层 NCEP再分析资料 北京地区 线特征 平均 极小值 DCAPE downburst days θ e profile characteristics
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参考文献12

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