Reference : Time series of 12CO and 13CO at northern mid-latitudes: Determination of Partial Colu...
Scientific congresses and symposiums : Paper published in a journal
Physical, chemical, mathematical & earth Sciences : Earth sciences & physical geography
http://hdl.handle.net/2268/15192
Time series of 12CO and 13CO at northern mid-latitudes: Determination of Partial Column and δ13C seasonal and interannual variations
English
Mahieu, Emmanuel mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Groupe infra-rouge de phys. atmosph. et solaire (GIRPAS) >]
Duchatelet, Pierre mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Groupe infra-rouge de phys. atmosph. et solaire (GIRPAS) >]
Rinsland, C. P. [ > > ]
Li, Qian [ > > ]
Boone, C. D. [ > > ]
Walker, K. A. [ > > ]
Bernath, P. F. [ > > ]
De Mazière, M. [ > > ]
Dils, B. [ > > ]
GIRPAS-Team [ > > ]
Apr-2009
Geophysical Research Abstracts
European Geophysical Society
11
EGU2009-10017-1
No
No
International
1029-7006
1607-7962
Katlenburg-Lindau
Germany
EGU 2009 General Assembly
du 19 au 24 avril 2009
EGU
Vienne
Autriche
[en] tropospheric composition ; carbon monoxide ; remote sensing
[fr] ACE-FTS ; isotopologue
[en] Carbon monoxide (CO) is an important reactive gas in the troposphere. It is emitted at the ground level by fossil fuel combustion and biomass burning. Biogenic sources and oceans as well as oxidation of methane and nonmethane hydrocarbons complete the emissions budget. Large uncertainties still affect the relative contributions of the identified anthropogenic and natural sources. Destruction by the hydroxyl radical (OH) is the main removal process for CO in both the troposphere and the stratosphere. The resulting average tropospheric lifetime of CO varies from several weeks to a few months.
Two approaches have been developed and optimized to independently retrieve abundances of 12CO and 13CO from high-resolution ground-based infrared solar spectra, using sets of carefully selected lines and the SFIT-2 (v3.91) algorithm which implements the optimal estimation method. The corresponding products will be described and characterized in terms of error budget and information content. These strategies have allowed us to produce partial column time series of 12CO and 13CO, using spectra recorded on a regular basis at the Jungfraujoch station (46.5ºN, 8.0ºE, 3580 m asl, Swiss Alps), a site of the Network for the Detection of Atmospheric Composition Change (NDACC). The seasonal and interannual changes observed in the 12CO,13CO and δ13C (13C/12C) data sets will be presented and discussed.
Complementary zonal mean time series derived from occultation measurements collected by the ACE-FTS instrument onboard the Canadian SCISAT-1 platform since 2004 will also be included and analyzed, focusing on the upper troposphere-lower stratosphere region of the atmosphere.
Finally, we will use GEOS-Chem 3-D chemistry transport model results to help in the interpretation of the short and long-term variations characterizing the ground-based and satellite data sets, focusing on the factors influencing the partitioning between the two CO isotopologues.
Researchers ; Professionals
http://hdl.handle.net/2268/15192
http://meetingorganizer.copernicus.org/EGU2009/EGU2009-10017-1.pdf

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