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| Titel |
Trends of anthropogenic CO2 and NO2 emissions derived from the satellite instrument SCIAMACHY |
| VerfasserIn |
Maximilian Reuter, Michael Buchwitz, Andreas Hilboll, Andreas Richter, Oliver Schneising, Michael Hilker, Jens Heymann, Heinrich Bovensmann, John Burrows |
| 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 |
250089883
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| Publikation (Nr.) |
 EGU/EGU2014-4097.pdf |
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| Zusammenfassung |
| Global CO2 emission inventories are currently mainly based on bottom-up estimates. These
rely, e.g., on reported fossil fuel consumptions and fuel types. The associated uncertainties
propagate into CO2-to-NOx emission ratios being an important measure for pollution
monitoring and into biospheric carbon fluxes derived with inverse models. Co-located
simultaneous SCIAMACHY satellite retrievals of XCO2 and NO2 from the years 2003-2011
are used as input for a top-down estimate of emission and emission ratio trends. In East
Asia, the analysis reveals an increasing trend (4.2±0.9%/a) of the CO2-to-NOx
emission ratio. This results from a large positive trend of CO2 emissions (9.8±0.7%/a)
primarily driven by the growing Chinese economy exceeding the positive trend of NOx
emissions (5.8±0.3%/a). The results confirm that the newly installed and renewed
technology (power plants, transportation, etc.) is significantly cleaner in terms of NOx
emissions. In North America and Europe negative CO2 trends balance similarly large
negative NO2 trends so that no significant trends of the emission ratios are observed. |
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