干旱气象

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1980~2012年重庆地区霾日时空变化特征

  

  1. 1.重庆市气象台,重庆 401147;
    2.东华大学环境科学与工程学院,上海 201620
  • 出版日期:2015-08-31 发布日期:2015-08-31
  • 作者简介:江文华(1979-),女,硕士,工程师,主要从事应用气象预报及相关研究工作.
  • 基金资助:

    重庆市气象局开放式研究基金项目“重庆地区霾的卫星遥感监测方法及其时空分布特征分析研究”(kfjj-201203)资助

Temporal and Spatial Variations of Haze Days in Chongqing from 1980 to 2012

  1. 1. Chongqing Meteorological Observatory, Chongqing 401147, China;
    2. College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
  • Online:2015-08-31 Published:2015-08-31

摘要:

利用重庆34个地面观测站1980~2012年气象资料,对重庆霾的空间分布、气候特征及其变化趋势进行了分析。结果表明:重庆霾日数空间分布呈现出西部多、东部较少、盆地多的特点;霾天气冬季最多,春秋季次之,夏季最少,12月最多,7月最少;20世纪80年代中期到90年代后期重庆霾日数总体较多,从变化趋势看,1980~1996年呈波动上升趋势,1997~2012年呈波动下降趋势,这与重庆以煤炭为主的能源消费结构、SO2排放量的变化等密切相关。

关键词: 重庆, 霾, 时空变化

Abstract:

Based on the daily observational data of 34 meteorological stations from 1980 to 2012, including visibility, relative humidity, weather phenomena, precipitation, wind speed and so on, and the annual emission of SO2 and industrial dust during 1998-2012, the spatial and temporal distribution characteristics and climatic trends of haze days in Chongqing were analyzed. The results indicated that the haze days in Chongqing had been more in the western part which located in basin and less in the eastern part. The haze days were most in winter, the next in autumn and spring, and least in summer. The annual change of haze days during 1980-2012 was obvious, the haze days were generally more from the mid-1980s to the late 1990s, and showed a fluctuating upward trend during 1980-1996 and downward trend during 1997-2012, which was closely correlated to the consumption structure of energy focusing on coal as well as the emission of SO2 in Chongqing.

Key words: Chongqing, haze, spatial and temporal variations

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