|
KMID : 1024520170260121375
|
|
Journal of the Environmental Sciences
2017 Volume.26 No. 12 p.1375 ~ p.1387
|
|
|
Characteristic of PM10 Distribution Related to Precise Local Wind Patterns in Busan Metropolitan Area
|
|
Hong Seon-Hwa
Lee Soon-Hwan
|
|
|
Abstract
|
|
|
|
In order to investigate the PM10 concentration trend and its characteristics over five different sub area in Busan from 2013 to 2015, data analysis with considering air flow distribution according to its topography was carried out using statistical methodology. The annual mean concentrations of PM10 in Busan tend to decrease from 49.6㎍/m3 in 2013 to 46.9㎍/m3 in 2015. The monthly mean concentrations value of PM10 were high during spring season, from March to May, and low during summer and fall due to frequent rain events. The concentration of PM10 was the highest in five different sub-area in Busan. High concentration episodes over 90 percentile of daily PM10 concentration were strongly associated with mean daily wind speed, and often occurred when the westerly wind or southwesterly wind were dominant. Regardless of wind direction, the highest correlation of PM10 concentrations was observed between eastern and southern regions, which were geographically close to each other, and the lowest in the western and eastern regions blocked by mountains. Wind flow along the complex terrain in Busan is also one of the predominant factors to understand the temporal variation of PM10 concentrations.
|
|
|
KEYWORD
|
|
|
PM10 concentration, Spatial correlations, Busan, Topography, Local wind
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|