河南省大风与扬沙天气时空分布特征

The Time and Space Distribution Characteristics of Windy Weather and Blowing Dust Weather in Henan Province

利用河南省内121个气象站点1981～2010年的气象数据，对河南省大风天气和扬沙天气在时间与空间上的分布进行了分析。结果表明，大风天气与扬沙天气呈正相关，相关系数为0．93，2种天气多发生在春季和冬季，夏季和秋季发生天数较少；此外，两者空间上的分布有所不同，大风天气主要发生在河南省中部地区，而扬沙天气则主要发生在河南省北部和黄河两岸一些地区。

The time and space distribution of windy weather and blowing dust weather in Henan Province was analyzed based on meteorological data of 121 meteorological stations in Henan Province from 1981 to 2010. There was a positive correlation between windy weather and blowing windy weather. The coefficient of correlation is 0.93. These two kinds of weather usually occur in spring and winter, but rarely in summer and autumn. In addition, as they differ in space distribution, windy weather mainly occurs in the central area of Henan Province and blowing dust weather usually occurs in the northern Dart of Henan Province and both sides of the Yellow River.