title: Carbon monoxide: A quantitative tracer for fossil fuel CO2?
creator: Gamnitzer, Ulrike
creator: Karstens, Ute
creator: Kromer, Bernd
creator: Neubert, Rolf
creator: Meijer, Harro
creator: Schroeder, Hartwig
creator: Levin, Ingeborg
subject: ddc-530
subject: 530 Physics
description: Carbon monoxide (CO), carbon dioxide (CO2), and radiocarbon (14CO2) measurements have been made in Heidelberg from 2001 to 2004 in order to determine the regional fossil fuel CO2 component and to investigate the application of CO as a quantitative tracer for fossil fuel CO2 (CO2(foss)). The observations were compared with model estimates simulated with the regional transport model REMO at 0.5°x0.5° resolution in Europe for 2002. These estimates are based on two available emissions inventories for CO and CO2(foss) and simplified atmospheric chemistry of CO. Both emissions inventories appear to overestimate fossil fuel emissions in the Heidelberg catchment area, in particular in summer and autumn by up to a factor of 2. Nevertheless, during meteorological conditions with high local source influence the CO/CO2(foss) emission ratios compared well with the observed atmospheric CO/CO2(foss) ratios. For a larger catchment area of several 100 km the observed CO/CO2(foss) ratio compared within better than 25% with the ratios derived from model simulations that take the transport from the sites of emission to the measurement station into account. Non-fossil-fuel CO emissions, production by volatile organic compounds, and oxidation, as well as soil uptake, turned out to add significant uncertainty to the application of CO as a quantitative fossil fuel CO2 surrogate tracer, so that 14CO2 measurements seem to be indispensable for reliable estimates of fossil fuel CO2 over the European continent.
date: 2006
type: Article
type: info:eu-repo/semantics/article
type: NonPeerReviewed
format: application/pdf
identifier: https://archiv.ub.uni-heidelberg.de/volltextserverhttps://archiv.ub.uni-heidelberg.de/volltextserver/6971/1/GamnitzerJGR2006.pdf
identifier: DOI:10.11588/heidok.00006971
identifier: urn:nbn:de:bsz:16-opus-69717
identifier:   Gamnitzer, Ulrike ; Karstens, Ute ; Kromer, Bernd ; Neubert, Rolf ; Meijer, Harro ; Schroeder, Hartwig ; Levin, Ingeborg  (2006) Carbon monoxide: A quantitative tracer for fossil fuel CO2?  Journal of Geophysical Research (Atmospheres) .       
relation: https://archiv.ub.uni-heidelberg.de/volltextserver/6971/
rights: info:eu-repo/semantics/openAccess
rights: http://archiv.ub.uni-heidelberg.de/volltextserver/help/license_urhg.html
language: eng