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中文摘要: 利用逐日8个时次地面天气图资料,分析了2002年春季( 3~5月)全国沙尘天气的时空分布特征。结果表明:2002年春季我国出现了12次沙尘天气过程,其中强沙尘暴过程有4次;北方地区有3个沙尘暴多发中心;与过去45年相比,北方大部地区的沙尘天气较同期偏少,但浑善达克沙地周边地区却明显偏多。另外,沙尘天气还具有早春多于晚春、高频期集中、影响范围广、强度强等明显特点。进一步分析表明,前期我国北方持续气温偏高降水偏少,大大降低了浅层土壤墒情,地表干燥,3月及4月上中旬,冷空气又频繁影响我国,从而导致沙尘天气接连不
中文关键词: 沙尘天气,时空分布,环流形势
Abstract:During the spring of 2002, totally 12 sand-stormy processes, including 4 severe sand-stormy processes, occurred in China. Using mainly surface synoptic maps, the spatial and temporal distribution characteristics of the sand-stormy weather event are analyzed. Furthermore, factors such as soil situation, dynamic and thermodynamic conditions contributing to the sand-stormy weather are researched.
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引用文本:
牛若芸,薛建军,2003.2002年春季我国沙尘天气特征及成因分析[J].气象,29(7):43-48.
,2003.Analysis of the Sand-Stormy Weather in China during the Spring of 2002[J].Meteor Mon,29(7):43-48.
牛若芸,薛建军,2003.2002年春季我国沙尘天气特征及成因分析[J].气象,29(7):43-48.
,2003.Analysis of the Sand-Stormy Weather in China during the Spring of 2002[J].Meteor Mon,29(7):43-48.