摘要
根据汕尾气象台1961～2003年共43a的常规气象观测资料，对汕尾市雾霾天气的能见度多时间尺度特征进行了分析。结果表明，汕尾市雾霾天气能见度的时次变化都是在08时次出现最多，在08～14时次逐渐减少，在14时次出现最少；霾天气逐月变化不明显，轻雾和雾主要出现在冬春季节，以春季为多；霾在80年代后出现次数明显增多，而雾则在70年代以后出现次数多，但雾天气年代变化不明显，主要原因可能是城市污染的逐年加重，引起雾霾天气次数明显增多。
The conventional meteorological data from 1961 to 2003 are used to analyze the multi-time scale variability of fog and haze visibility in Shanweil City. The results show that： as for the time and frequency change of fog and haze visibility in Shanwei, the maximum value occurred at 8： 00, then declined gradually from 8：00 to 14： 00, and the minimum value at 14：00 ; the monthly change of fog and haze visibility is not obvious, the fog mainly appeared in winter and spring, especially in spring; the frequency of haze increased obviously after the 1980s and that of fog increased after the 1970s, but the annual change of the fog was not evident. The main reason might be that the pollution of the city was increasing year by year, and consequently the frequency of the fog and haze increased obviously.
出处
《热带地理》
2006年第4期308-313,共6页
Tropical Geography
基金
广东省自然科学基金(032212)
教育部"985工程"(105203200400006)
国家青年863项目(2002AA639500)
关键词
雾霾
能见度
变化
多时间尺度
Fog and haze
Visibility
Variation
Multi-time scale
