High time-resolution measurements of carbonaceous species in PM2.5 at an urban site of Korea. Park, S., S., Lee, K., Kim, Y., J., Kim, T., Y., Cho, S., Y., & Kim, S., J. ATMOSPHERIC RESEARCH, 89(1-2):48-61, 7, 2008. abstract bibtex A Sunset Laboratory carbon analyzer with 1-hour time resolution was used
to measure organic carbon (OC) and elemental carbon (EC) in fine
particles (PM2.5) at an urban site of Incheon, Korea between August and
October 2004. Hourly EC measurements yielded an average diurnal pattern
that peaked during the morning rush hour traffic on weekdays but not on
weekends. However, OC concentrations showed no significant diumal
patterns during the weekday/weekend. Conditional probability functions
were used to identify likely local emission source locations of the EC
and OC observed at the site, indicating that the EC and OC contributions
to the site were mostly coming from the northerly and southerly
directions, where two heavy traffic highways and residential area are
located. Throughout the study period, numerous short-term excursions of
the EC and OC data were identified, but only two distinct carbon
elevated events are discussed in this study. The potential source
contribution function (PSCF) analysis, which combines hourly EC and OC
data with air mass backward trajectories, is performed to help identify
the likely source locations and the preferred pathways that cause the
two carbon pollution events. One is associated with high ozone episode
occurred in the afternoon, resulting in accumulation of secondary
organic aerosol. During the high ozone pollution period, the high PSCF
values for EC and OC are related to local source and upwind pollution
areas. The other was strongly associated with long-range transport of
smoke plumes from fires in northern China and southeastern Russia,
leading to high enrichment of OC concentrations at the site. This event
is clearly observed in the PSCF maps for EC and OC. There was a good
correspondence between the hotspot locations identified based on MODIS
satellite image data and the high PSCF valued grid cells. (C) 2008
Elsevier B.V. All tights reserved.
@article{
title = {High time-resolution measurements of carbonaceous species in PM2.5 at an urban site of Korea},
type = {article},
year = {2008},
identifiers = {[object Object]},
pages = {48-61},
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abstract = {A Sunset Laboratory carbon analyzer with 1-hour time resolution was used
to measure organic carbon (OC) and elemental carbon (EC) in fine
particles (PM2.5) at an urban site of Incheon, Korea between August and
October 2004. Hourly EC measurements yielded an average diurnal pattern
that peaked during the morning rush hour traffic on weekdays but not on
weekends. However, OC concentrations showed no significant diumal
patterns during the weekday/weekend. Conditional probability functions
were used to identify likely local emission source locations of the EC
and OC observed at the site, indicating that the EC and OC contributions
to the site were mostly coming from the northerly and southerly
directions, where two heavy traffic highways and residential area are
located. Throughout the study period, numerous short-term excursions of
the EC and OC data were identified, but only two distinct carbon
elevated events are discussed in this study. The potential source
contribution function (PSCF) analysis, which combines hourly EC and OC
data with air mass backward trajectories, is performed to help identify
the likely source locations and the preferred pathways that cause the
two carbon pollution events. One is associated with high ozone episode
occurred in the afternoon, resulting in accumulation of secondary
organic aerosol. During the high ozone pollution period, the high PSCF
values for EC and OC are related to local source and upwind pollution
areas. The other was strongly associated with long-range transport of
smoke plumes from fires in northern China and southeastern Russia,
leading to high enrichment of OC concentrations at the site. This event
is clearly observed in the PSCF maps for EC and OC. There was a good
correspondence between the hotspot locations identified based on MODIS
satellite image data and the high PSCF valued grid cells. (C) 2008
Elsevier B.V. All tights reserved.},
bibtype = {article},
author = {Park, Seung Shik and Lee, Kwon-Ho and Kim, Young J and Kim, Tae Young and Cho, Sung Yong and Kim, Seung Jai},
journal = {ATMOSPHERIC RESEARCH},
number = {1-2}
}
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Hourly EC measurements yielded an average diurnal pattern\nthat peaked during the morning rush hour traffic on weekdays but not on\nweekends. However, OC concentrations showed no significant diumal\npatterns during the weekday/weekend. Conditional probability functions\nwere used to identify likely local emission source locations of the EC\nand OC observed at the site, indicating that the EC and OC contributions\nto the site were mostly coming from the northerly and southerly\ndirections, where two heavy traffic highways and residential area are\nlocated. Throughout the study period, numerous short-term excursions of\nthe EC and OC data were identified, but only two distinct carbon\nelevated events are discussed in this study. The potential source\ncontribution function (PSCF) analysis, which combines hourly EC and OC\ndata with air mass backward trajectories, is performed to help identify\nthe likely source locations and the preferred pathways that cause the\ntwo carbon pollution events. One is associated with high ozone episode\noccurred in the afternoon, resulting in accumulation of secondary\norganic aerosol. During the high ozone pollution period, the high PSCF\nvalues for EC and OC are related to local source and upwind pollution\nareas. The other was strongly associated with long-range transport of\nsmoke plumes from fires in northern China and southeastern Russia,\nleading to high enrichment of OC concentrations at the site. This event\nis clearly observed in the PSCF maps for EC and OC. There was a good\ncorrespondence between the hotspot locations identified based on MODIS\nsatellite image data and the high PSCF valued grid cells. (C) 2008\nElsevier B.V. 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Hourly EC measurements yielded an average diurnal pattern\nthat peaked during the morning rush hour traffic on weekdays but not on\nweekends. However, OC concentrations showed no significant diumal\npatterns during the weekday/weekend. Conditional probability functions\nwere used to identify likely local emission source locations of the EC\nand OC observed at the site, indicating that the EC and OC contributions\nto the site were mostly coming from the northerly and southerly\ndirections, where two heavy traffic highways and residential area are\nlocated. Throughout the study period, numerous short-term excursions of\nthe EC and OC data were identified, but only two distinct carbon\nelevated events are discussed in this study. The potential source\ncontribution function (PSCF) analysis, which combines hourly EC and OC\ndata with air mass backward trajectories, is performed to help identify\nthe likely source locations and the preferred pathways that cause the\ntwo carbon pollution events. One is associated with high ozone episode\noccurred in the afternoon, resulting in accumulation of secondary\norganic aerosol. During the high ozone pollution period, the high PSCF\nvalues for EC and OC are related to local source and upwind pollution\nareas. The other was strongly associated with long-range transport of\nsmoke plumes from fires in northern China and southeastern Russia,\nleading to high enrichment of OC concentrations at the site. This event\nis clearly observed in the PSCF maps for EC and OC. There was a good\ncorrespondence between the hotspot locations identified based on MODIS\nsatellite image data and the high PSCF valued grid cells. (C) 2008\nElsevier B.V. All tights reserved.},\n bibtype = {article},\n author = {Park, Seung Shik and Lee, Kwon-Ho and Kim, Young J and Kim, Tae Young and Cho, Sung Yong and Kim, Seung Jai},\n journal = {ATMOSPHERIC RESEARCH},\n number = {1-2}\n}","author_short":["Park, S., S.","Lee, K.","Kim, Y., J.","Kim, T., Y.","Cho, S., Y.","Kim, S., J."],"bibbaseid":"park-lee-kim-kim-cho-kim-hightimeresolutionmeasurementsofcarbonaceousspeciesinpm25atanurbansiteofkorea-2008","role":"author","urls":{},"downloads":0},"search_terms":["high","time","resolution","measurements","carbonaceous","species","pm2","urban","site","korea","park","lee","kim","kim","cho","kim"],"keywords":[],"authorIDs":[]}