Abstract:

Based on daily mumps cases from 2005 to 2011 in Yinchuan, and NCEP/NCAR reanalyzed monthly average geopotential height and temperature fields data, the relation between the abnormal mumps cases and the atmospheric circulation were analyzed by using the method of composite analysis. The results show that the number of annual mumps cases had obvious variation during 2005-2011 in Yinchuan, and the maximum of mumps cases occurring in 2010 was 4.1 times of the minimum in 2007. The number of mumps cases had obvious change stage in a year, during the periods from April to July and from November to next January the mumps occurred frequently. There was a certain relationship between abnormal atmospheric circulation and occurrence of mumps. In more mumps cases years, the 500 hPa height anomaly field presented negative departure between the Baikal and the east of northwestern China in the year and from November to next January, and negative departure also occurred between the northeast China and the east of northwestern China from April to July, and the zero-line of height anomaly was over the east of northwestern China. The 500 hPa temperature anomaly field was similar to the 500 hPa height anomaly field. In less mumps cases years, the 500 hPa height anomaly field presented positive departure over Mongolia and China in the year and from April to July and from November to next January, the cold-air was in northward region. The 500 hPa temperature anomaly presented positive anomaly between the mid-latitude and high-latitude of the Eurasia, the southern wind was prevailing over northwestern China.

Key words: Yinchuan, mumps, atmospheric circulation

摘要：

利用2005—2011年银川市逐日腮腺炎病例资料、NCEP/NCAR再分析资料，采取合成分析方法分析银川市腮腺炎的异常流行与大气环流的关系。结果表明：银川市腮腺炎发病人数具有明显的年际变化，最多年是最少年的4.1倍。年内阶段性变化明显，4—7月、11月至次年1月为多发时段；大气环流异常与腮腺炎的发生有一定的联系，腮腺炎发病人数异常偏多年北半球欧亚大陆500 hPa高度距平场全年、11月至次年1月贝加尔湖至我国西北地区东部为负距平区，4—7月我国东北至西北地区东部为负距平区，距平零线均位于西北地区东部附近，冷暖空气活动频繁。而500 hPa温度距平场中各时段的正负距平区域分布与高度场相近；异常偏少年500 hPa高度距平场各时段中蒙古国和我国为正距平区，冷空气活动偏北。而500 hPa温度距平场欧亚大陆中高纬度地区为正距平区，我国西北地区受偏南暖湿气流控制。

关键词: 银川, 腮腺炎, 大气环流