【摘要】 对2007年5月15~16日山西省忻州市出现的沙尘天气过程的高低空天气形势和前期气候背景进行了分析。结果表明:这次强沙尘天气过程主要受新疆地区东移的强冷空气和蒙古地区低压的共同影响所致,动量下传促进对流层中低层风力加大,冷锋南压,触发不稳定层结大气,驱动天气过程的发生和发展。更多还原

【Abstract】 The high and low levels’ weather situation and early climate background of blowing synoptic process which happened on May 15 to 16,2007 in Xinzhou City was analyzed.The results showed that this strong dusty weather was induced by eastward strong cold air from Xinjiang and depression of Mongolia region,momentum transmission promoted that low-level wind became strong in troposphere and cold front pressed south,at last triggered unstable stratification atmosphere,made the weather process come about and develop.更多还原