Limits...
Effects of Meteorological Conditions on PM2.5 Concentrations in Nagasaki, Japan.

Wang J, Ogawa S - Int J Environ Res Public Health (2015)

Bottom Line: The fine particulate matter (PM2.5) problem has attracted much scientific and public attention, due to its effects on visibility, human health, and global climate.The correlation was positive or negative depending on the meteorological variable values, if these were lower or higher than the threshold.From the relationship with wind direction, it can be depicted that the west wind might bring the most pollutants to Nagasaki.

View Article: PubMed Central - PubMed

Affiliation: Space Engineering and Planning Laboratory, Graduate school of Engineering, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan. jianhuagirl@gmail.com.

ABSTRACT
The fine particulate matter (PM2.5) problem has attracted much scientific and public attention, due to its effects on visibility, human health, and global climate. There are three factors that have important effect on PM2.5 mass concentration: domestic pollutant emission sources, external sources outside of the country, and the meteorological conditions. Nagasaki is a coastal prefecture located at the westernmost part of Japan, which is an ideal location to study pollutants from long range transport and correlation between PM2.5 and meteorological conditions. In this paper, PM2.5 concentration data and meteorological data were obtained during 1 January 2013~31 December 2013. The spatial distribution depicts that the western part of the study area has the most serious PM2.5 pollution. The correlation analysis results between PM2.5 concentration and meteorological data showed that temperature had a negative, and precipitation had a positive, correlation with PM2.5. There was a threshold in the correlations between humidity and wind speed and PM2.5. The correlation was positive or negative depending on the meteorological variable values, if these were lower or higher than the threshold. From the relationship with wind direction, it can be depicted that the west wind might bring the most pollutants to Nagasaki.

No MeSH data available.


Related in: MedlinePlus

PM2.5 monitoring stations in Nagasaki prefecture.
© Copyright Policy
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC4555266&req=5

ijerph-12-09089-f002: PM2.5 monitoring stations in Nagasaki prefecture.

Mentions: The study was carried in Nagasaki Prefecture, Japan. Nagasaki is located at the westernmost part of Japan (Figure 1). It is a coastal tourist city with a small number of factories and forest coverage higher than 60%. Nagasaki’s domestic anthropogenic sources contribute much less than eternal sources from outside of Japan. This attribute of Nagasaki makes it an ideal candidate to study external sources from outside of the country by long range transport. As shown in the Figure 2, there are many monitoring stations in Nagasaki. The data that utilized for this study can be found at Nagasaki prefecture Government website (http://www.pref.nagasaki.jp/); PM2.5 mass concentration was collected during 1 January 2013~31 December 2013. Meteorological data of Nagasaki in 2013 (temperature, humidity, wind speed, and wind direction) were collected from the Japan Meteorological Agency website [21].


Effects of Meteorological Conditions on PM2.5 Concentrations in Nagasaki, Japan.

Wang J, Ogawa S - Int J Environ Res Public Health (2015)

PM2.5 monitoring stations in Nagasaki prefecture.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4555266&req=5

ijerph-12-09089-f002: PM2.5 monitoring stations in Nagasaki prefecture.
Mentions: The study was carried in Nagasaki Prefecture, Japan. Nagasaki is located at the westernmost part of Japan (Figure 1). It is a coastal tourist city with a small number of factories and forest coverage higher than 60%. Nagasaki’s domestic anthropogenic sources contribute much less than eternal sources from outside of Japan. This attribute of Nagasaki makes it an ideal candidate to study external sources from outside of the country by long range transport. As shown in the Figure 2, there are many monitoring stations in Nagasaki. The data that utilized for this study can be found at Nagasaki prefecture Government website (http://www.pref.nagasaki.jp/); PM2.5 mass concentration was collected during 1 January 2013~31 December 2013. Meteorological data of Nagasaki in 2013 (temperature, humidity, wind speed, and wind direction) were collected from the Japan Meteorological Agency website [21].

Bottom Line: The fine particulate matter (PM2.5) problem has attracted much scientific and public attention, due to its effects on visibility, human health, and global climate.The correlation was positive or negative depending on the meteorological variable values, if these were lower or higher than the threshold.From the relationship with wind direction, it can be depicted that the west wind might bring the most pollutants to Nagasaki.

View Article: PubMed Central - PubMed

Affiliation: Space Engineering and Planning Laboratory, Graduate school of Engineering, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan. jianhuagirl@gmail.com.

ABSTRACT
The fine particulate matter (PM2.5) problem has attracted much scientific and public attention, due to its effects on visibility, human health, and global climate. There are three factors that have important effect on PM2.5 mass concentration: domestic pollutant emission sources, external sources outside of the country, and the meteorological conditions. Nagasaki is a coastal prefecture located at the westernmost part of Japan, which is an ideal location to study pollutants from long range transport and correlation between PM2.5 and meteorological conditions. In this paper, PM2.5 concentration data and meteorological data were obtained during 1 January 2013~31 December 2013. The spatial distribution depicts that the western part of the study area has the most serious PM2.5 pollution. The correlation analysis results between PM2.5 concentration and meteorological data showed that temperature had a negative, and precipitation had a positive, correlation with PM2.5. There was a threshold in the correlations between humidity and wind speed and PM2.5. The correlation was positive or negative depending on the meteorological variable values, if these were lower or higher than the threshold. From the relationship with wind direction, it can be depicted that the west wind might bring the most pollutants to Nagasaki.

No MeSH data available.


Related in: MedlinePlus