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| Titel |
Estimation of a ship-plume ozone production efficiency: ITCT 2K2 case study |
| VerfasserIn |
Hyun Soo Kim, Yong Hoon Kim, Chul Han Song |
| Konferenz |
EGU General Assembly 2015
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 17 (2015) |
| Datensatznummer |
250103190
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| Publikation (Nr.) |
 EGU/EGU2015-2591.pdf |
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| Zusammenfassung |
| Ozone Production Efficiency (OPE) of ship plume was first evaluated in this study, based on
ship-plume photochemical/dynamic model simulation and the ship-plume composition
data measured during the ITCT 2K2 (Intercontinental Transport and Chemical
Transformation2002) aircraft campaign. The averaged instantaneous OPEs (OPEi)
estimated via the ship-plume photochemical/dynamic modeling for the ITCT 2K2 ship-plume
ranged between 4.61 and 18.92, showing that the values vary with the extent of chemical
evolution (or chemical stage) of the ship plume and the stability classes of the marine
boundary layer (MBL). Together with OPEi, the equivalent OPEs (OPEe) for the entire
ITCT 2K2 ship-plume were also estimated. The OPEe values varied between 9.73 (for the
stable MBL) and 12.73 (for the moderately stable MBL), which agreed well with the
OPEe of 12.85 estimated based on the ITCT 2K2 ship-plume observations. It was
also found that both the model-simulated and observation-based OPEe inside the
ship-plume were 0.29-0.38 times smaller than the OPEe calculated/measured outside the
ITCT 2K2 ship-plume. Such low OPEs insides the ship plume were due to the high
levels of NO and non-liner ship-plume photochemistry. Possible implications of this
ship-plume OPE study in the global chemistry-transport modeling are also discussed. |
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