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冰川冻土 ›› 2014, Vol. 36 ›› Issue (3): 608-613.doi: 10.7522/j.issn.1000-0240.2014.0072

• 冰冻圈与全球变化 • 上一篇    下一篇

西宁市逆温特征及其与空气污染物浓度的相关分析

何永晴1,2, 赵玉成1, 冯蜀青2   

  1. 1. 中国气象局 成都高原气象研究所, 四川 成都 610072;
    2. 青海省西宁市气象局, 青海 西宁 810001;
    3. 中国大气本底基准观象台, 青海 西宁 810001
  • 收稿日期:2013-12-05 修回日期:2014-03-15 出版日期:2014-06-25 发布日期:2014-07-16
  • 作者简介:何永晴(1989-),女,青海湟中人,助理工程师,2012年在安徽农业大学获硕士学位,现主要从事城市环境气象和天气预报研究工作.E-mail:heyongqing890404@163.com
  • 基金资助:
    中国气象局成都高原气象研究所高原气象开放基金课题(LPM2013013);青海省气象局重点项目“环境气象业务系统研发”资助

Temperature inversion in Xining City: Characteristics and correlation with air pollutant concentrations

HE Yongqing1,2, ZHAO Yucheng1, FENG Shuqing2   

  1. 1. Institute of Plateau Meteorology, China Meteorological Administration, Chengdu 610072, China;
    2. Xining Meteorological Bureau, Xining 810001, China;
    3. China Global Atmosphere Watch Baseline Observatory, Xining 810001, China
  • Received:2013-12-05 Revised:2014-03-15 Online:2014-06-25 Published:2014-07-16

摘要: 根据2010-2012年西宁市基本探空气象站逐日07:00时和19:00时两个时次的逆温资料,及西宁市环境监测站监测的大气污染物(SO2、NO2、PM10)日均值数据,分析了西宁市逆温基本特征及其与空气污染物浓度之间的相关关系. 结果表明:西宁市2010-2012年07:00时逆温出现频率为69%,19:00时逆温出现频率为41%;近地逆温层厚度冬季最厚,夏季最薄. 07:00时和19:00时月平均逆温厚度变化趋势基本一致;西宁市逆温发生频率冬半年明显高于夏半年;秋、冬季产生的逆温强度明显比春、夏季强. 3 a来西宁市空气污染共出现148 d,逆温频率和空气污染物月平均浓度有较好的正相关性. 08:00时西宁市逐日空气污染物浓度与逆温厚度呈正相关,与逆温强度呈负相关关系. 冬、春季平均空气污染物浓度值与逆温厚度、强度均呈正相关关系.

关键词: 西宁市区, 逆温, 空气污染物, 相关性

Abstract: Based on the daily temperature inversion data at 07:00 and 19:00 at the basic sounding stations and the daily average atmospheric pollutants data (SO2, NO2 and PM10) of environmental monitoring station in Xining City during 2010-2012, the basic characteristics of temperature inversion in Xining and their correlations with the concentrations of air pollutants were analyzed. It is found that temperature inversion frequency was 69% at 07:00 and 41% at 19:00. The near the ground inversion layer was thickest in winter, and thinnest in summer. The changing trend of monthly average temperature inversion thickness was basically identical at 7:00 and at 19:00. Temperature inversion frequency in the winter half year was significantly higher than that in the summer half year; the inversion intensity in autumn and winter was significantly better than that in spring and summer. There were 148 d of air pollution in the three years. Between the temperature inversion frequency and monthly average concentration of air pollutants there was good positive correlation. Daily air pollutant concentrations had a positive correlation with the thickness of the temperature inversion at 8 am, and a negative correlation with the intensity of inversion. There were positive correlations between average air pollutant concentration and temperature inversion thickness, intensity in winter and spring.

Key words: Xining City, temperature inversion, air pollutants, correlation

中图分类号: 

  • X51/P423.1