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重庆市区灰霾天气变化及特征分析
引用本文:张灿,周志恩,翟崇治,张丹.重庆市区灰霾天气变化及特征分析[J].中国环境监测,2014,30(4):69-75.
作者姓名:张灿  周志恩  翟崇治  张丹
作者单位:重庆市环境科学研究院(重庆市环境监测中心), 城市大气环境综合观测与污染防控重庆市重点实验室, 重庆 401147;重庆市环境科学研究院(重庆市环境监测中心), 城市大气环境综合观测与污染防控重庆市重点实验室, 重庆 401147;重庆市环境科学研究院(重庆市环境监测中心), 城市大气环境综合观测与污染防控重庆市重点实验室, 重庆 401147;重庆市环境科学研究院(重庆市环境监测中心), 城市大气环境综合观测与污染防控重庆市重点实验室, 重庆 401147
基金项目:重庆市自然科学基金重点项目(CSTC,2009BA7032)
摘    要:分析了近15年重庆市区灰霾的时间变化特征以及主要大气污染物与能见度的相关性。1997—2012年,灰霾天气占41.2%,发生天数没有明显变化,严重程度有所减缓。灰霾在冬季发生的天数最多,持续时间长,且容易发生重度的持续灰霾。夏季灰霾天数最少,程度最轻。PM10、PM2.5、SO2、NO2浓度随灰霾的加重而增加,其中PM2.5浓度增幅最大,O3浓度随灰霾的加重而降低。灰霾对能见度的影响大于降水天气对其的影响。灰霾天气下能见度受PM2.5的影响较大,非灰霾天气下,能见度主要受O3的影响。

关 键 词:重庆  灰霾  变化趋势  能见度  相关性
收稿时间:6/5/2013 12:00:00 AM
修稿时间:2013/8/22 0:00:00

Research on Haze Characteristics and Variation in Chongqing Urban Area
ZHANG Can,ZHOU Zhi-en,ZHAI Chong-zhi and ZHANG Dan.Research on Haze Characteristics and Variation in Chongqing Urban Area[J].Environmental Monitoring in China,2014,30(4):69-75.
Authors:ZHANG Can  ZHOU Zhi-en  ZHAI Chong-zhi and ZHANG Dan
Institution:Chongqing Academy of Environmental Science (Chongqing Environment Monitoring Centre), Chongqing Key Laboratory of Urban Atmospheric Environment for Integrated Observation and Pollution Prevention and Control, Chongqing 401147, China;Chongqing Academy of Environmental Science (Chongqing Environment Monitoring Centre), Chongqing Key Laboratory of Urban Atmospheric Environment for Integrated Observation and Pollution Prevention and Control, Chongqing 401147, China;Chongqing Academy of Environmental Science (Chongqing Environment Monitoring Centre), Chongqing Key Laboratory of Urban Atmospheric Environment for Integrated Observation and Pollution Prevention and Control, Chongqing 401147, China;Chongqing Academy of Environmental Science (Chongqing Environment Monitoring Centre), Chongqing Key Laboratory of Urban Atmospheric Environment for Integrated Observation and Pollution Prevention and Control, Chongqing 401147, China
Abstract:Temporal variation of haze in recent 15 years and correlation between the main atmospheric pollutants and visibility in Chongqing urban area were analyzed.Haze days accounted for 41.2% from 1997 to 2012, although the trend of haze days was not obviously, haze severity slowed. Haze was the most and severest in winter and the least and lightest in summer. Long duration of haze often occurred in winter and prone to severe continued haze. PM10, PM2.5, SO2 and NO2 concentrations gradually increased with haze severity, and PM2.5 concentration increased the most. O3 concentration gradually decreased with haze severity. Influence of haze days on visibility was greater than rainfall days. Visibility greatly influenced by PM2.5 in haze days and greatly influenced by O3 in non-haze days.
Keywords:Chongqing  haze  variation trend  visibility  correlation
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