Origins and chemical characteristics of fine aerosols during the northeastern Asia regional experiment (Atmospheric Brown Cloud-East Asia Regional Experiment 2005)

Meehye Lee, Mijung Song, Kwang J. Moon, Jin S. Han, Gangwoong Lee, Kyung Ryul Kim

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

As a part of ABC-EAREX 2005 (Atmospheric Brown Cloud-East Asia Regional Experiment 2005), trace gases and compositions of PM2.5 were measured at Gosan supersite in Jeju Island during 13-30 March 2005. Aerosol constituents were determined continuously on site at 1-a intervals. The mean concentrations of gases were 56 ppbv for O3, 297 ppbv for CO, 3.2 ppbv for SO2, and 2.2 ppbv for NOx, For PM2.5, the average mass concentration was 27.3 μg/m3, and mean concentrations of nsS-SO42-, organic carbon (OC), and elemental carbon (EC) were 3.34 μg/m3, 4.22 μg/m3, and 1.00 μg/m3, respectively. The simultaneous measurements of gaseous and aerosol species revealed that the composition Of PM2.5 was mainly determined by anthropogenic plumes from nearby lands. Most of pollution plumes were associated with the passage of cold frontal systems, when all major species were greatly enhanced. Of these, two episodes were followed by dust incidents. In general, EC and nss-SO42- were well correlated with CO while OC was in good agreement with O3. Particularly, the variations of OC/EC ratios exhibited a maximum in the afternoon corresponding to the peak of O3/CO ratios, suggesting OC/EC as a marker representing the degree of chemical processing of fine aerosol. The ratios of OC/CO for all measurements fell between emission ratios of China and South Korea. For pollution episodes, the correlations of CO with nss-SO42- and EC were significant and their relative enhancement was suggested as an indicator to distinguish different types of pollution plumes.

Original languageEnglish
Article numberD22S29
JournalJournal of Geophysical Research D: Atmospheres
Volume112
Issue number22
DOIs
Publication statusPublished - 2007 Nov 27

Fingerprint

Carbon Monoxide
Organic carbon
Aerosols
aerosols
Carbon
organic carbon
aerosol
carbon
Pollution
plume
experiment
pollution
Experiments
Gases
plumes
trace gas
Chemical analysis
Dust
chemical
Asia

ASJC Scopus subject areas

  • Earth and Planetary Sciences (miscellaneous)
  • Atmospheric Science
  • Geochemistry and Petrology
  • Geophysics
  • Oceanography
  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Origins and chemical characteristics of fine aerosols during the northeastern Asia regional experiment (Atmospheric Brown Cloud-East Asia Regional Experiment 2005). / Lee, Meehye; Song, Mijung; Moon, Kwang J.; Han, Jin S.; Lee, Gangwoong; Kim, Kyung Ryul.

In: Journal of Geophysical Research D: Atmospheres, Vol. 112, No. 22, D22S29, 27.11.2007.

Research output: Contribution to journalArticle

@article{a995f901ccbd41859b35baf5c74ca87d,
title = "Origins and chemical characteristics of fine aerosols during the northeastern Asia regional experiment (Atmospheric Brown Cloud-East Asia Regional Experiment 2005)",
abstract = "As a part of ABC-EAREX 2005 (Atmospheric Brown Cloud-East Asia Regional Experiment 2005), trace gases and compositions of PM2.5 were measured at Gosan supersite in Jeju Island during 13-30 March 2005. Aerosol constituents were determined continuously on site at 1-a intervals. The mean concentrations of gases were 56 ppbv for O3, 297 ppbv for CO, 3.2 ppbv for SO2, and 2.2 ppbv for NOx, For PM2.5, the average mass concentration was 27.3 μg/m3, and mean concentrations of nsS-SO42-, organic carbon (OC), and elemental carbon (EC) were 3.34 μg/m3, 4.22 μg/m3, and 1.00 μg/m3, respectively. The simultaneous measurements of gaseous and aerosol species revealed that the composition Of PM2.5 was mainly determined by anthropogenic plumes from nearby lands. Most of pollution plumes were associated with the passage of cold frontal systems, when all major species were greatly enhanced. Of these, two episodes were followed by dust incidents. In general, EC and nss-SO42- were well correlated with CO while OC was in good agreement with O3. Particularly, the variations of OC/EC ratios exhibited a maximum in the afternoon corresponding to the peak of O3/CO ratios, suggesting OC/EC as a marker representing the degree of chemical processing of fine aerosol. The ratios of OC/CO for all measurements fell between emission ratios of China and South Korea. For pollution episodes, the correlations of CO with nss-SO42- and EC were significant and their relative enhancement was suggested as an indicator to distinguish different types of pollution plumes.",
author = "Meehye Lee and Mijung Song and Moon, {Kwang J.} and Han, {Jin S.} and Gangwoong Lee and Kim, {Kyung Ryul}",
year = "2007",
month = "11",
day = "27",
doi = "10.1029/2006JD008210",
language = "English",
volume = "112",
journal = "Journal of Geophysical Research G: Biogeosciences",
issn = "0148-0227",
publisher = "American Geophysical Union",
number = "22",

}

TY - JOUR

T1 - Origins and chemical characteristics of fine aerosols during the northeastern Asia regional experiment (Atmospheric Brown Cloud-East Asia Regional Experiment 2005)

AU - Lee, Meehye

AU - Song, Mijung

AU - Moon, Kwang J.

AU - Han, Jin S.

AU - Lee, Gangwoong

AU - Kim, Kyung Ryul

PY - 2007/11/27

Y1 - 2007/11/27

N2 - As a part of ABC-EAREX 2005 (Atmospheric Brown Cloud-East Asia Regional Experiment 2005), trace gases and compositions of PM2.5 were measured at Gosan supersite in Jeju Island during 13-30 March 2005. Aerosol constituents were determined continuously on site at 1-a intervals. The mean concentrations of gases were 56 ppbv for O3, 297 ppbv for CO, 3.2 ppbv for SO2, and 2.2 ppbv for NOx, For PM2.5, the average mass concentration was 27.3 μg/m3, and mean concentrations of nsS-SO42-, organic carbon (OC), and elemental carbon (EC) were 3.34 μg/m3, 4.22 μg/m3, and 1.00 μg/m3, respectively. The simultaneous measurements of gaseous and aerosol species revealed that the composition Of PM2.5 was mainly determined by anthropogenic plumes from nearby lands. Most of pollution plumes were associated with the passage of cold frontal systems, when all major species were greatly enhanced. Of these, two episodes were followed by dust incidents. In general, EC and nss-SO42- were well correlated with CO while OC was in good agreement with O3. Particularly, the variations of OC/EC ratios exhibited a maximum in the afternoon corresponding to the peak of O3/CO ratios, suggesting OC/EC as a marker representing the degree of chemical processing of fine aerosol. The ratios of OC/CO for all measurements fell between emission ratios of China and South Korea. For pollution episodes, the correlations of CO with nss-SO42- and EC were significant and their relative enhancement was suggested as an indicator to distinguish different types of pollution plumes.

AB - As a part of ABC-EAREX 2005 (Atmospheric Brown Cloud-East Asia Regional Experiment 2005), trace gases and compositions of PM2.5 were measured at Gosan supersite in Jeju Island during 13-30 March 2005. Aerosol constituents were determined continuously on site at 1-a intervals. The mean concentrations of gases were 56 ppbv for O3, 297 ppbv for CO, 3.2 ppbv for SO2, and 2.2 ppbv for NOx, For PM2.5, the average mass concentration was 27.3 μg/m3, and mean concentrations of nsS-SO42-, organic carbon (OC), and elemental carbon (EC) were 3.34 μg/m3, 4.22 μg/m3, and 1.00 μg/m3, respectively. The simultaneous measurements of gaseous and aerosol species revealed that the composition Of PM2.5 was mainly determined by anthropogenic plumes from nearby lands. Most of pollution plumes were associated with the passage of cold frontal systems, when all major species were greatly enhanced. Of these, two episodes were followed by dust incidents. In general, EC and nss-SO42- were well correlated with CO while OC was in good agreement with O3. Particularly, the variations of OC/EC ratios exhibited a maximum in the afternoon corresponding to the peak of O3/CO ratios, suggesting OC/EC as a marker representing the degree of chemical processing of fine aerosol. The ratios of OC/CO for all measurements fell between emission ratios of China and South Korea. For pollution episodes, the correlations of CO with nss-SO42- and EC were significant and their relative enhancement was suggested as an indicator to distinguish different types of pollution plumes.

UR - http://www.scopus.com/inward/record.url?scp=38349149813&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=38349149813&partnerID=8YFLogxK

U2 - 10.1029/2006JD008210

DO - 10.1029/2006JD008210

M3 - Article

AN - SCOPUS:38349149813

VL - 112

JO - Journal of Geophysical Research G: Biogeosciences

JF - Journal of Geophysical Research G: Biogeosciences

SN - 0148-0227

IS - 22

M1 - D22S29

ER -