摘要
根据南昌气象观测站1960～2006年47年的观测资料,对南昌市灰霾天气的气候特征及其成因进行了分析。分析结果表明:南昌灰霾日数12月最多,7月最少,秋冬季灰霾日数占全年的75%以上。年灰霾日数总体呈明显的上升趋势,尤其是80年代后呈急剧上升的趋势。灰霾日数年际变化主要与城市化发展及大气中的污染物浓度有关,而季、月的变化多受天气形势和气象条件的影响。灰霾能够降低到达地面的太阳总辐射。
Based on the observational data of Nanchang from 1960 to 2006, climatic characteristics and forming cause of haze in Nanchang are analyzed. The results indicate that the most haze days in Nanchang are in December and the fewest days in July, and the haze days in autumn and winter account for more than 75 percent of annual total haze days. In general, the number of annual haze days represent the obvious increasing trend, especially increasing rapidly after the 1980s. Inter-annual change of haze days is associated with the development of urbanization and pollutant concentration in the atmosphere, while the seasonal and monthly variations of haze days are mainly influenced by synoptic situation and weather conditions. Haze could decrease global solar radiation.
出处
《江西能源》
2008年第1期47-50,57,共5页
Jiangxi Energy
关键词
灰霾
气候特征
成因
太阳总辐射
haze
climatic characteristics
forming cause
global solar radiation
