A study of causes of air quality change in Yunlin ,Chiayi ,Tainan and central of Taiwan from 1993 to 2006
Date Issued
2008
Date
2008
Author(s)
Wang, Chi-Tsan
Abstract
Abstracthe main study is to analyze the change of pollutions from 1993 to 2006,ccording to the pollutants statistics of 21 air quality monitoring stations inaichung, Changhua, Nantou, Yunlin, Chiayi, and Tainan. The research canind out the relationship between pollution source and the statistic result ofollutant database. By statistics, it shows there is a tendency that pollutions,xcept for ozone pollution and PM10, had decreased. Especially in Jushantation, it is very serious in these five years. Otherwise, some regions shows decreasing trend of PM10. The region of Chiayi, however, has obviouslyncreased.lthough the air quality change in a long term is much slower by thebservation, the research needs to understand what are vital pollutionources resulting in that change. By comparing with polluted years and theime of building major infrastructures in the central and south region,xamining the distribution of wind direction and wind speed, and finally usingackward trajectory, the result reveals two reasons why the air qualityhanges. One is that the weak wind in fall causes the pollution concentrationot to disperse easily. Another is sea-land breeze which brows pollutionsack to the land. Moreover, the major pollution source is from the centralegion, such as the Formosa Plastic Group’s Sixth Naphtha Cracking Plant,aichung fire power plant, Taichung metropolis, Chiayi metropolis, and Maioliire power plant. To sum up, they are related to the air quality change.
Subjects
air quality change
O3
PM10
SO2
NOx
NMHC
CO
Air pollution
SDGs
Type
thesis
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