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| Titel |
Diurnal tracking of anthropogenic CO2 emissions in the Los Angeles basin megacity during spring 2010 |
| VerfasserIn |
S. Newman, S. Jeong, M. L. Fischer, X. Xu, C. L. Haman, B. Lefer, S. Alvarez, B. Rappenglueck, E. A. Kort, A. E. Andrews, J. Peischl, K. R. Gurney, C. E. Miller, Y. L. Yung |
| 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 ; 13, no. 8 ; Nr. 13, no. 8 (2013-04-26), S.4359-4372 |
| Datensatznummer |
250018613
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| Publikation (Nr.) |
 copernicus.org/acp-13-4359-2013.pdf |
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| Zusammenfassung |
| Attributing observed CO2 variations to human or natural cause is
critical to deducing and tracking emissions from observations. We have used
in situ CO2, CO, and planetary boundary layer height (PBLH)
measurements recorded during the CalNex-LA (CARB et al., 2008) ground
campaign of 15 May–15 June 2010, in Pasadena, CA, to deduce the diurnally
varying anthropogenic component of observed CO2 in the megacity of Los
Angeles (LA). This affordable and simple technique, validated by carbon
isotope observations and WRF-STILT (Weather Research and Forecasting model
– Stochastic Time-Inverted Lagrangian Transport model) predictions, is
shown to robustly attribute observed CO2 variation to anthropogenic or
biogenic origin over the entire diurnal cycle. During CalNex-LA, local
fossil fuel combustion contributed up to ~50% of the
observed CO2 enhancement overnight, and ~100% of the
enhancement near midday. This suggests that sufficiently accurate total
column CO2 observations recorded near midday, such as those from the
GOSAT or OCO-2 satellites, can potentially be used to track anthropogenic
emissions from the LA megacity. |
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