THE RESEARCH OF URBAN AIR POLLUTION WEATHER CHARACTERISTICS UNDER THE SPECIAL TERRAIN

摘要：

Based on 2003-2009 air pollution monitoring data in Chongqing city, weather characteristics of pollution events are investigated. Results show that the major pollutant is PM10,.,which has a Dual Peak and Dual Valley diurnal fluctuation The pollution weather has obvious seasonal and continuity characteristics and these pollution events mainly occur from late-Autumn to next early spring with persistent period for 2-7 days. The process of the pollution weather has a typical characteristics of atmospheric circulation, which local atmospheric circulations are equipped with low or mean pressure in the lower troposphere and zonal or northwest flows in the upper troposphere, resulting in overcast sky or rainsunshine. In the process of the pollution weather, local meteorological elements have regular changes which in 24-hour the ground air pressure changes in negative, temperature changes in plus, average relative humidity is between 72％ and 85％, the wind speed changes little which keeps 1- 2m/s, low-level inversion is evident. When the pollution weather is over, air pressure will pick up obviously, temperature will drop and relative humidity will increase.

关键词： PM10 Air Pollution Index Weather Characteristics

作者: Zhou Guobing Wang Shigong

作者单位: College of Atmospheric Sciences, Lanzhou University,Lanzhou,Gansu,730000,China Chongqing Meteorological Administration,Chongqing, 401147,China

会议类型: 国际会议

会议名称: 2010 International Conference on Digital Manufacturing and Automation(2010 数字制造与自动化国际会议 ICDMA 2010)

会议地点: 长沙

会议语种:英文

页码: 785-788

在线出版日期: 2010-12-18（万方平台首次上网日期，不代表论文的发表时间）