Author(s)

Nguyen Anh Dung¹, Duong Hong Son², Nguyen The Duc Hanh³, Doan Quang Tri^4*

¹Department of Science and Technology, Ministry of Natural Resources and Environment, Hanoi, Vietnam.
²Water Resources Institute, Ministry of Natural Resources and Environment, Hanoi, Vietnam.
³Faculty of Environment, Hanoi University of Natural Resources and Environment, Ministry of Natural Resources and Environment, Hanoi, Vietnam.
⁴Vietnam Journal of Hydrometeorology, Viet Nam Meteorological and Hydrological Administration, Hanoi, Vietnam.

According to the Ministry of Natural Resources and Environment, Hanoi city is currently facing the increased air pollution, especially particulate matter. This study examines the influence of meteorological factors including temperature, humidity and wind speed on PM₁₀ concentration in Hanoi. The data used in this study include 24-h PM₁₀ concentration data, hourly temperature, humidity and wind speed data in 2018 at three automatic air monitoring stations under Vietnam Environment Administration and Hanoi Natural Resources and Environment Department. The SPSS statistical analysis tools are utilized to analyze the correlation between PM₁₀ concentration and meteorological factors through the Spearman (r) correlation coefficient. Additionally, the Independent-Sample T-Test is also employed to assess the difference in PM₁₀ concentration in the period between dry season (from October to March) and wet season (from May to September). The results show that there is a trend of seasonal variation of PM₁₀ concentration. Specifically, PM₁₀ concentration recorded a higher value in winter and lower in summer. Different correlations between air pollutants and meteorological factors were also observed. PM₁₀ concentration was inversely correlated (r < 0) with most of meteorological factors and there was a statistically significant difference (Sig. < 0.05) of PM₁₀ concentration during dry and wetseason. This outcome has confirmed the important role of meteorological factors in the formation of air pollution with large variations in different seasons and geological areas.

Meteorology, Temperature, Humidity, Wind Speed, PM₁₀, Air Quality

Dung, N. , Son, D. , Hanh, N. and Tri, D. (2019) Effect of Meteorological Factors on PM₁₀ Concentration in Hanoi, Vietnam. Journal of Geoscience and Environment Protection, 7, 138-150. doi: 10.4236/gep.2019.711010.