2012年库尔勒市PM_(10)质量浓度的变化特征分析  

Characteristics of Mass Concentration Variations of PM_(10) in Korla City in 2012

作　　者：赵克蕾 何清[1,2,3,4] 钟玉婷[1,2,3,4] 黄秋霞[1,2,3,4,5] 

机构地区：[1]中国气象局乌鲁木齐沙漠气象研究所 [2]新疆树木年轮生态实验室 [3]中国气象局树木年轮理化研究重点实验室,新疆乌鲁木齐830002 [4]塔克拉玛干沙漠大气环境观测试验站,新疆塔中841000 [5]新疆大学资源与环境科学学院,新疆乌鲁木齐830046

出　　处：《沙漠与绿洲气象》2014年第1期11-16,共6页Desert and Oasis Meteorology

基　　金：国家自然科学基金资助项目(41375162);中国沙漠气象科学研究基金项目(Sqj2012011;Sqj201209);中央级公益性科研院所基本科研业务费项目(IDM201205)共同资助

摘　　要：利用南疆最大的城市库尔勒市2011年11月15日—2012年11月30日连续自动可吸入颗粒物(PM10)浓度观测数据,分析了PM10的污染状况和质量浓度变化特征。结果表明:(1)由于气象条件与人类活动的影响,PM10浓度日变化为明显的双峰型。(2)PM10质量浓度存在明显的周内变化,周一出现最大值274.8μg·m-3,周三出现最小值196.7μg·m-3。(3)PM10最高月浓度出现在4月,浓度为562.1μg·m-3;7月达到最低浓度107.4μg·m-3;11月达到次大值219.9μg·m-3。(4)春季PM10浓度较高,夏季较低,总体特征为:春季>秋季>冬季>夏季,四季的平均浓度均超过国家二级标准。(5)降雪过程对PM10具有明显的清除作用,沙尘天气有使PM10质量浓度迅速增加的作用。Based on the automatic continuous PM^o concentration observation data from December 15,2011 to December 30,2012 at Korla City, the pollution and variation characteristics of PMlo concentration were analyzed. The results showed as follows. （1）Affected by weather conditions and human activities, the daily variation of PM10 mass concentration was characterized by obvious double peaks. （2）The PM10 concentrations varied greatly during a week. The highest PM10 concentrations was 274.8 μg·m^-3 on Monday, and the lowest was 196.7 μg·m^-3 on Wednesday.（3）The highest monthly average concentration was 562.1 μg·m^-3 in April, and the lowest was 107.4 μg·m^-3 in July, and the second highest concentration was 219.9 μg·m^-3 in December.（4）PMlo mass concentration was the highest in spring and the lowest in summer. The general characteristic was that it was higher in autumn than that in winter. Every seasonal average concentration was higher than the second grade of the national standard. （5）Snowfall had obvious cleaning effect to PM10,and dust weather could make PM10 concentrations increase rapidly.

关 键 词：可吸入颗粒物(PM10) 变化特征 沙尘天气 库尔勒市 

分 类 号：X502[环境科学与工程—环境工程]