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| Titel |
Measurement of fossil fuel carbon dioxide and other anthropogenic trace gases from MEGAPOLI intensive campaign in Paris during winter 2010. |
| VerfasserIn |
M. López, M. Schmidt, M. Delmotte, V. Gros, D. Mondelain, S. J. Lehman, M. Ramonet, C. Vuillemin, I. Xueref-Remy |
| Konferenz |
EGU General Assembly 2012
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 14 (2012) |
| Datensatznummer |
250063404
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| Zusammenfassung |
| The Paris agglomeration is the third biggest megacity in Europe (12 million inhabitants) and
according to national emission inventories, is responsible for 15 % of the French
anthropogenic CO2 emissions mainly originating from road transport, and residential and
industrial energy consumption. The objective of our feasibility study was to design an
efficient monitoring strategy in order to quantify future trends in anthropogenic CO2 emission
in Paris area. During the winter campaign of the European project MEGAPOLI and the
French project CO2-MEGAPARIS, we performed measurements of CO2 and related trace
gases from January to February 2010. The RAMCES (Atmospheric Network for Greenhouse
Gases Monitoring) team at LSCE monitored CO2 and CO mixing ratio with high temporal
resolution using instruments based on Cavity Ring Down Spectroscopy (CRDS) in the
thirteenth arrondissement of Paris (south). We also sampled air in more than fifty flasks
covering three full days at the same place. Flask were analysed in the RAMCES central
laboratory with a Gas Chromatograph system for CO2, CO, CH4, N2O, SF6 and H2
mixing ratios and also by Mass Spectroscopy for CO2 isotopic ratios (δ13C and
δ18O). In order to quantify the fossil fuel CO2 (CO2ff) most flasks were analysed
at INSTAAR for Δ14C in CO2. In addition, 13CO2 isotopic ratio and total CO2
concentration were measured at high temporal resolution (< 1 min) over three days at
Paris with the SIMCO instrument developed at LPMAA. In parallel with the Paris
measurements, in-situ CO2, CO and other trace gases were monitored at Gif-sur-Yvette, a
semi urban station 20km south west of Paris and also at the Trainou tower, 100 km
south of Paris. Similar synoptic variations of CO2and CO mixing ratios were found
in Paris and Gif with maximum mixing ratio up to 495 ppm CO2 and 1000 ppb
CO downtown Paris. The mean diurnal variation during this winter period shows
a peak to peak amplitude of 15 ppm CO2 and 150 ppb CO at Paris and 10 ppm
CO2 and 40 CO ppb at Gif station. Using the MEGAPOLI database we will test
different tracers (CO, VOCs, NOx) as possible candidate to quantify CO2ff (fossil
fuel) based on calibration of these tracers against CO2ff estimates based on D14C.
These results from the campaign will be compared to the emission inventories from
EDGAR 4.2 (global inventories) and the national ones from CITEPA and AirParif. |
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