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| Titel |
Impact of different emission inventories on simulated tropospheric ozone over China: a regional chemical transport model evaluation |
| VerfasserIn |
J. Ma, J. A. van Aardenne |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 4, no. 4 ; Nr. 4, no. 4 (2004-06-21), S.877-887 |
| Datensatznummer |
250001825
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| Publikation (Nr.) |
 copernicus.org/acp-4-877-2004.pdf |
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| Zusammenfassung |
| The importance of emission inventory uncertainty on the simulation of
summertime tropospheric ozone over China has been analyzed using a regional
chemical transport model. Three independent emissions inventories, that are
(i) emission estimates from the Emission Database for Global Atmospheric
Research (EDGAR) for the year 1995, (ii) a regional emission inventory used
in the Transport and Chemical Evolution over the Pacific (TRACE-P) program
with emissions for the year 2000 and (iii) a national emission inventory
used in the China Ozone Research Program (CORP) with emission estimates for
the year 1995, are used for model simulation over a summer period. Methods
used for the development of the inventories are discussed and differences in
simulated ozone and its precursors with these emission inventories are
analyzed. Comparison of the emission inventories revealed large differences
in the emission estimates (up to 50% for NOx, ~100% for
NMVOC and ~1000% for CO). Application of the different emission
inventories in three model simulations showed minor differences in both
surface O3 in rather unpolluted areas in China and at higher altitudes
(500mbar). In polluted areas, differences in surface O3 are 30-50%
between the different model simulations which seem rather small taking into
account the large differences in the emission inventories. Additional
sensitivity runs showed that the difference in NOx emissions as well
NMVOC emissions is a dominant factor which controls the differences in
simulated O3 concentrations while the impact of differences in CO
emissions is relatively small. Although the CO emission estimate by CORP
seems to be underestimated, there is no confidence to highlight one emission
inventory better than the others. |
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