摘要
2004年10月7日至10日,北京出现了一次明显的持续重污染过程,这次污染过程持续时间之长、污染程度之重是近4年来同期最大的。为了了解造成这次持续重污染过程的原因,利用同期污染指数、常规气象观测资料、探空资料及自动站气象资料,对这一期间的空气污染气象条件进行了较为详细的分析。结果表明,这次持续重污染过程是由本地的污染源和大尺度的天气背景与局地的气象条件共同造成的。
During the period of the National Day of 2004, a continuous heavy air pollution event occurred. In order to have a good understanding of the causes of the event, a detailed analysis was made of the weather conditions during the time period by means of the air pollution index, conventional meteorological data, radiosonde data and AWS data. The results indicate that the pollution event was resulted from the combined influences of the large-scale synoptic background and local weather conditions such as weak wind, inverse temperature, high relative humidity, etc. , as well as local pollution sources.
出处
《气象科技》
2005年第6期543-547,共5页
Meteorological Science and Technology
基金
国家自然科学基金项目(40275006)"城市重烟尘雾的边界层结构研究"
中国气象局气候变化专项(CCSF2005-3-DH13)"首都圈区域气候变化与大气成分监测分析研究"共同资助
关键词
空气污染
气象条件
局地重污染
air pollution, weather condition, local heavy air pollution
