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冰川冻土  2014 

西宁市逆温特征及其与空气污染物浓度的相关分析

DOI: 10.7522/j.issn.1000-0240.2014.0072, PP. 608-613

Keywords: 西宁市区,逆温,空气污染物,相关性

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Abstract:

根据2010-2012年西宁市基本探空气象站逐日0700时和1900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0700时逆温出现频率为69%,1900时逆温出现频率为41%;近地逆温层厚度冬季最厚,夏季最薄.0700时和1900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.3a来西宁市空气污染共出现148d,逆温频率和空气污染物月平均浓度有较好的正相关性.0800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.

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