对2010～2014年阿克达拉大气本底站和阿勒泰市的PM10质量浓度值、温度、降水、风向风速、湿度、气压数据进行了对比分析。 结果表明:阿克达拉和阿勒泰市PM10年平均质量浓度均呈上升趋势,但是本底站值上升较快。当阿克达拉的平均气温在10～20℃时, 阿勒泰市的平均气温低于－10℃时, 两地PM10质量浓度处于较高污染水平。相关性分析表明阿克达拉和阿勒泰市PM10质量浓度与降水、 风速均呈负相关。当PM10质量浓度处于较高污染水平, 此时阿克达拉站主导风是西北风(NW),风频达17.1%,风速 在1.8～5.7 m·s－1之间,且风速小于1.5 m·s－1时的风频明显比风速大于1.5 m·s－1时 的风频小很多;阿勒泰主导风是北风(N), 风频为10.6%,风速在1.3～3.3 m·s－1之间,风速小于1.5 m·s－1 时的风频与风速大于1.5 m·s－1时的风频相差不明显。此外,分析表明PM10浓度与湿度、气压的相关性较弱。

A comparative analysis of PM10 mass concentration, temperature, precipitation, wind direction, wind speed, humidity and air pressure in Akdara Atmospheric Background Station and Altay City, China, from 2010 to 2014 is carried out. The results show that the annual average mass concentration of PM10 in Akdara and Altay shows an upward trend, while the value of background station increases rapidly. When the average temperature of Akdara is 10～20℃, and the average temperature of Altay is below －10℃, the PM10 mass concentration of the two stations is at a high pollution level. The correlation analysis shows that there is a negative correlation between PM10 concentration and the corresponding precipitation, as well as the wind speed. When the PM10 mass concentration is at a high pollution level, the dominant wind in Akdala station is the northwest wind (NW) with a wind frequency of 17.1% and a wind speed between 1.8 and 5.7 m·s－1. The wind frequency when the wind speed is less than 1.5 m·s－1 is significantly lower than that when the wind speed is greater than 1.5 m·s－1. In contrast, the dominant wind in Altay is north (N), with the wind frequency of 10.6% and the wind speed of 1.3～3.3 m·s－1, but the difference between the wind frequency when the wind speed is less than1.5 m·s－1 and that when the wind speed is more than1.5 m·s－1 is not so obvious. In addition, the analysis also shows that the correlation of PM10 concentration with humidity and air pressure is weak.