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| Titel |
Model-simulated trend of surface carbon monoxide for the 2001–2010 decade |
| VerfasserIn |
J. Yoon, A. Pozzer |
| 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 ; 14, no. 19 ; Nr. 14, no. 19 (2014-10-01), S.10465-10482 |
| Datensatznummer |
250119078
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| Publikation (Nr.) |
 copernicus.org/acp-14-10465-2014.pdf |
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| Zusammenfassung |
| We present decadal trend estimates of surface carbon monoxide (CO) simulated
using the atmospheric chemistry general circulation model ECHAM5/MESSy (EMAC;
ECHAM5 and MESSy stand for fifth-generation European Centre Hamburg general
circulation model and Modular Earth Submodel System, respectively) based on
the emission scenarios Representative Concentration Pathways (RCP) 8.5 for
anthropogenic activity and Global Fire Emissions Database (GFED) v3.1 for
biomass burning from 2001 through 2010. The spatial distribution of the
modeled surface CO is evaluated with monthly data from the Measurements Of
Pollution In The Troposphere (MOPITT) thermal infrared product. The global
means of correlation coefficient and relative bias for the decade 2001–2010
are 0.95 and −4.29%, respectively. We also find a reasonable
correlation (R = 0.78) between the trends of EMAC surface CO and full
10-year monthly records from ground-based observation (World Data Centre for
Greenhouse Gases, WDCGG). Over western Europe, eastern USA, and northern
Australia, the significant decreases in EMAC surface CO are estimated at
−35.5 ± 5.8, −59.6 ± 9.1, and
−13.7 ± 9.5 ppbv decade−1, respectively. In contrast, the
surface CO increases by +8.9 ± 4.8 ppbv decade−1 over southern
Asia. A high correlation (R = 0.92) between the changes in EMAC-simulated
surface CO and total emission flux shows that the significant regional trends
are attributed to the changes in primary and direct emissions from both
anthropogenic activity and biomass burning. |
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