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气象:2007,33(3):95-100
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河北省冬麦区干热风成因分析
(1.河北省气象台, 石家庄 050021;2.河北省衡水市气象局)
Causation analysis of Dry Hot Wind Formation in Hebei Province Winter Wheat Region
(1.Hebei Province Meteorological Office, Shijiazhuang 050021;2.Hebei Hengshui Meteorological Bureau)
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投稿时间:2006-08-08    修订日期:2006-12-25
中文摘要: 利用河北省冬麦区1971—2005年5月10日至6月10日逐日降水、气温、湿度、风向风速及同期 500hPa高度场等资料,采用小波分析、滑动t检验等统计方法,对冬麦区近35年来干 热风时空分布、周期、突变等特征进行了分析,同时对河北省冬麦区干热风成因进行了分 析。分析表明:轻度和重度干热风年平均发生日数分布具有一致性;而轻度和重度干热风的周期、 年代际变化等均具有不同特征;干热风偏多、偏少除与同期气温、降水有关外,还与同期50 0hPa环流形势场关系密切。
中文关键词: 干热风  成因  小波分析
Abstract:Based on daily precipitation, temperature, humidity, wind speed, wind direction and 500hPa height data during 10,May to 10,June from 1971 to 2005, by using trend analysis ,wavelet analysis, sliding t test and othe r met hods, the temporal spatial distribution,change period, abrupt change and other f eature of dry hot wind are analyzed in Hebei province winter wheat region durin g recent 35 years.The results indicate that annual average days of light dry ho t wind are consistent with those of the severe; but the period and interannual v ariabilit y between the light and the severe dry hot wind are different. In addition, the number of annual days of the dry hot wind is related with temperature, prec i pitation and 500hPa circulation pattern at same time.These results set up a foun dation to forecast later dry hot wind.
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基金项目:河北省科技攻关计划项目资助(编号:01220602D)
引用文本:
尤凤春,郝立生,史印山,段素莲,孔凡超,2007.河北省冬麦区干热风成因分析[J].气象,33(3):95-100.
You Fengchun,Hao Li sheng,Shi Yinshan,Duan Sulian,Kong Fanchao,2007.Causation analysis of Dry Hot Wind Formation in Hebei Province Winter Wheat Region[J].Meteor Mon,33(3):95-100.