北京地区PM_(10)质量浓度与边界层气象要素相关性分析  

Correlation Analysis between PM_(10) Mass Concentration and Meteorological Elements of Atmospheric Boundary Layer in Beijing Area

作　　者：郭利[1] 张艳昆[1] 刘树华[1] 李炬[2] 马雁军[3] 

机构地区：[1]北京大学物理学院大气与海洋科学系,北京100871 [2]中国气象局北京城市气象研究所,北京100089 [3]中国气象局沈阳大气环境研究所,沈阳110016

出　　处：《北京大学学报（自然科学版）》2011年第4期607-612,共6页Acta Scientiarum Naturalium Universitatis Pekinensis

基　　金：国家自然科学基金(40875004);中央级公益性科研院所基本科研业务费专项基金(IUMKY200701);国家公益性行业(气象)科研专项基金(GY200806020);中国气象局气象新技术推广项目(CMATG2007M15);中国气象局北京城市气象研究所城市气象科学研究基金(UMRF200702)资助

摘　　要：对北京市2007年观象台观测站PM10质量浓度资料、观象台气象自动站资料、风廓线资料和探空资料进行了数据分析。结果表明,在污染物源强一定的条件下,污染物的积累、稀释、扩散和清除主要取决于气象条件。近地面风速、温度、湿度、气压和边界层高度等气象条件对于可吸入颗粒物的污染程度有着很重要的影响:PM10质量浓度与地面风速、温度、湿度、气压和大气边界层高度呈显著相关性,并且相关性随季节变化明显。其中,6月PM10质量浓度与地面风速和大气边界层高度呈负相关性,而与温度呈正相关,11月则与温度成负相关;风速与PM10质量浓度之间的相关性可以用二次多项式来描述,二者呈"U"形变化。另外由11月份PM10质量浓度资料的分析表明,当月PM10质量浓度最小值对应的风速为4.1 m/s。The exploration analysis and correlation analysis were done using the Air Quality data and synoptic radio sonic data in Beijing, 2007 to illustrate the relationship between the spatio-temporal distribution of PM10 mass concentration and the meteorological condition and its diurnal and seasonal variation, The results show that the synoptic condition in the atmospheric boundary layer dominates the accumulation, transportation, dilution and sinking processing. There is a significantly negative correlation between PMI0 mass concentration and synoptic conditions such as height of Atmospheric boundary Layer （ABL） and wind speed while positive correation between PM10 mass concentration and temperature near ground surface pressure. Besides, the correlation varies with seasons; The relationship between PM10 mass concentration and wind speed can be described by a U-curve which obey a binomial model. The PM10 mass concentration observation data in November 2007 shows a minimum records with wind speed of 4.1 m/s.

关 键 词：PM10质量浓度 一元曲线回归 大气边界层 近地面风速 气压 边界层高度 

分 类 号：P404[天文地球—大气科学及气象学]