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| Titel |
Global atmospheric emissions and transport of polycyclic aromatic hydrocarbons: Evaluation of modeling and transboundary pollution |
| VerfasserIn |
Huizhong Shen, Shu Tao |
| Konferenz |
EGU General Assembly 2014
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 16 (2014) |
| Datensatznummer |
250088312
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| Publikation (Nr.) |
 EGU/EGU2014-2405.pdf |
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| Zusammenfassung |
| ABSTRACT Global atmospheric emissions of 16 polycyclic aromatic hydrocarbons
(PAHs) from 69 major sources were estimated for a period from 1960 to 2030.
Regression models and a technology split method were used to estimated country
and time specific emission factors, resulting in a new estimate of PAH emission
factor variation among different countries and over time. PAH emissions in 2007
were spatially resolved to 0.1°x 0.1° grids based on a newly developed global
high-resolution fuel combustion inventory (PKU-FUEL-2007). MOZART-4 (The
Model for Ozone and Related Chemical Tracers, version 4) was applied to simulate
the global tropospheric transport of Benzo(a)pyrene, one of the high molecular
weight carcinogenic PAHs, at a horizontal resolution of 1.875° (longitude) x
1.8947° (latitude). The reaction with OH radical, gas/particle partitioning, wet
deposition, dry deposition, and dynamic soil/ocean-air exchange of PAHs were
considered. The simulation was validated by observations at both background and
non-background sites, including Alert site in Canadian High Arctic, EMEP sites in
Europe, and other 254 urban/rural sites reported from literatures. Key factors effecting
long-range transport of BaP were addressed, and transboundary pollution was discussed. |
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