formation and transport of particulate matter and ozone in Taiwan
「formation and transport of particulate matter and ozone in Taiwan」於資料集「EPQSummary_EnvironmentalInformationSystem」由單位「行政院環境保護署」的陳先生所提供,聯繫電話是02-2311-7722#2386,最近更新時間為:2023-07-30 01:01:46。 欄位Project Title的內容是formation and transport of particulate matter and ozone in Taiwan , 欄位Project Subject的內容是Based on the research works conducted in 2003 we report the following major findings.
1.Four Asian dust events were observed in north Taiwan in the spring of 2003.
2.Noticeable levels of particulate pollutants were found in the long-range transported air parcels. This suggested that long-range transport of air pollutants that originated in east China is one of the key factors affecting the air quality in north Taiwan in the season of prevailing northeasters.
3.The PM10 concentration over Taiwan in summer is lower that that in springtime. The major constituents of PM10 include sulfate, nitrate, ammonium, and carbon. The composition suggests that the particulate pollutants are mostly contributed by local pollution.
4.Daytime sulfate concentration in aerosols strongly correlates with ozone in Tainan, indicating the contribution of photochemical or secondary sources to the aerosol burden should be important in southern Taiwan.
5.According to the simulation of ozone episodes, strong northeasters can be induced by a typhoon, as it passing through the west Pacific Ocean. As a result, more ozone can be transported from the mid-latitudes to southern Taiwan. In addition, the secondary circulation of typhoon can cause extremely clear skies over Taiwan. Photochemical reactions can be enhanced by the strong UV radiation and result in drastic increases of ozone levels.
6.Based on the intensive measurement of VOCs during two ozone episodes in autumn of 2003, ethene, xylene, toluene, isoprene and propene are major precursors of ozone in the Kaohsiung-Pingtung area.
7.The ratios of specific VOCs vs. 22DMC4 are proposed as a useful tool for apportionment of the VOC between traffic and non-traffic sources. The results of this work show that the non-traffic contributions to ethane, toluene, and propene are 52%, 33%, and 41%, respectively, implying the importance of non-traffic emission of the ozone precursors to the formation of ozone in Kaohsiung-Pingtung area. , 欄位Project Year的內容是2003 , 欄位Organizer的內容是Department of Environmental Monitoring & Information Management , 欄位Executive Unit的內容是中央研究院地球科學研究所 , 欄位Reporting download URL的內容是https://epq.epa.gov.tw/ProjectDoc/FileDownload?fid=2344&proj_id=A000000320976&doc_kind=1 , 欄位Publish Date的內容是20040201 。
Project Title
formation and transport of particulate matter and ozone in Taiwan
Project Subject
Based on the research works conducted in 2003 we report the following major findings. 1.Four Asian dust events were observed in north Taiwan in the spring of 2003. 2.Noticeable levels of particulate pollutants were found in the long-range transported air parcels. This suggested that long-range transport of air pollutants that originated in east China is one of the key factors affecting the air quality in north Taiwan in the season of prevailing northeasters. 3.The PM10 concentration over Taiwan in summer is lower that that in springtime. The major constituents of PM10 include sulfate, nitrate, ammonium, and carbon. The composition suggests that the particulate pollutants are mostly contributed by local pollution. 4.Daytime sulfate concentration in aerosols strongly correlates with ozone in Tainan, indicating the contribution of photochemical or secondary sources to the aerosol burden should be important in southern Taiwan. 5.According to the simulation of ozone episodes, strong northeasters can be induced by a typhoon, as it passing through the west Pacific Ocean. As a result, more ozone can be transported from the mid-latitudes to southern Taiwan. In addition, the secondary circulation of typhoon can cause extremely clear skies over Taiwan. Photochemical reactions can be enhanced by the strong UV radiation and result in drastic increases of ozone levels. 6.Based on the intensive measurement of VOCs during two ozone episodes in autumn of 2003, ethene, xylene, toluene, isoprene and propene are major precursors of ozone in the Kaohsiung-Pingtung area. 7.The ratios of specific VOCs vs. 22DMC4 are proposed as a useful tool for apportionment of the VOC between traffic and non-traffic sources. The results of this work show that the non-traffic contributions to ethane, toluene, and propene are 52%, 33%, and 41%, respectively, implying the importance of non-traffic emission of the ozone precursors to the formation of ozone in Kaohsiung-Pingtung area.
Project Year
2003
Organizer
Department of Environmental Monitoring & Information Management
Executive Unit
中央研究院地球科學研究所
Reporting download URL
https://epq.epa.gov.tw/ProjectDoc/FileDownload?fid=2344&proj_id=A000000320976&doc_kind=1
Publish Date
20040201
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