Trend Analysis and Correlation Analysis of PM2.5 and PM10 in Taipei City during 2006-2012
Abstract: This study analyzed the real observation data from 6 monitoring stations in Taipei city to clarify the change of PM2.5 and PM10 and their correlations to other air pollutants and climate factors. The results showed that the average concentration of PM2.5 and PM10 from 2006-2012 maintained at a stable level. The annual average concentrations of PM10 and PM2.5 among the 6 selected stations were 38.2 - 51.7 μg/m3 and 22.3 - 29.4 μg/m3, respectively. The ratios of PM2.5 to PM10 were 48.3% - 61.6%. The PM2.5 concentrations in the 3 stations near the city center were significantly higher than that in the 3 stations close to the city center, but the ratio of PM2.5 to PM10 was increasing annually in the stations close to the city center. PM10, SO2, NO2, and CO had high correlations to PM2.5 and especially, NO2 was significantly correlated to PM2.5 among the stations near the city center, which meant that the vehicle emission was the major source in the city center. However, the data from the stations close to the city center showed that SO2 had a higher correlation with PM2.5 than NO2, which implied that effects from nonlocal sources were influential. The climate factors, such as temperature, rainfall, relative humidity, and hourly wind speed, were negatively correlated to PM2.5 in the 6 selected stations.
文章引用: 陈起凤 , 连语洁 , 叶惠中 , 王玉纯 (2014) 2006~2012年台北市PM2.5和PM10变化趋势与相关分析。 环境保护前沿， 4， 128-135. doi: 10.12677/AEP.2014.44018
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