METEOROLOGICAL FACTORS AFFECTING CONCENTRATION OF PM10 AT NA PHRA LAN SUB - DISTRICT, CHALOEM PHRA KIAT DISTRICT, SARABURI PROVINCE

Abstract

The research objectives were to study the relationship between meteorological factors and the concentration of PM and simulate the suitable model to predict the future average PM₁₀ concentration in Na Phra Lan, Saraburi. In this study, a 10 year period (2006 - 2015) in PM₁₀ data was analyzed by using statistical analysis. The results indicate that air pressure, relative humidity, rainfall, air temperature and wind speeds were significant relationship with concentration of PM₁₀, with r = 0.838, 0.581, 0.488, 0.440 and 0.402 respectively. Multiple regression analysis shows that air pressure, wind speeds and rainfall could explain variation in concentration of PM approximately 74.90 percent at the 0.05 level statistically significant. Moreover, it shows that low wind speeds, low temperature, low humidity and low rainfall promote higher concentration of PM especially during the dry season. When the weather turns cold and humidity level drop, the concentration of PM₁₀ has a maximum level regularly every year.