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http://dx.doi.org/10.7780/kjrs.2020.36.6.3.9

The Effect of Meteorological Factors on PM10 Depletion in the Atmosphere and Evaluation of Rainwater Quality  

Park, Hyemin (Division of Earth Environmental System Sciences, Pukyong National University)
Kim, Taeyong (Division of Earth Environmental System Sciences, Pukyong National University)
Yang, Minjune (Department of Earth and Environmental Sciences, Pukyong National University)
Publication Information
Korean Journal of Remote Sensing / v.36, no.6_3, 2020 , pp. 1733-1741 More about this Journal
Abstract
This study analyzed the effect of meteorological factors on the concentration of PM10 (particulate matter 10) in the atmosphere and the variation of rainwater quality using multivariate statistical analysis. The concentration of PM10 in the atmosphere was continuously measured during eleven precipitation events with a custom-built PM sensor node. A total of 183 rainwater samples were analyzed for pH, EC (electrical conductivity), and water-soluble cations (Na+, Mg2+, K+, Ca2+, NH4+) and anions (Cl-, NO3-, SO42-). The data has been analyzed using two multivariate statistical techniques (principal component analysis, PCA, and Pearson correlation analysis) to identify relationships among PM10 concentrations in the atmosphere, meteorological factors, and rainwater quality factors. When the rainfall intensity was relatively strong (> 5 mm/h, rainfall type 1), the PM10 concentration in the atmosphere showed a negative correlation (r = -0.55, p < 0.05) with cumulative rainfall. The PM10 concentration increased the concentration of water-soluble ions (r = 0.25) and EC (r = 0.4), and decreased the pH (r = -0.7) of rainwater samples. However, for rainfall type 2 (< 5 mm/h), there was no negative correlation between the PM10 concentration in the atmosphere and cumulative rainfall and no statistically significant correlation between the PM10 concentration in the atmosphere and rainwater quality.
Keywords
particulate matter; meteorological factor; correlation analysis; principal component analysis; rainwater quality;
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