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Global CO2fluxes inferred from surface air‐sample measurements and from TCCON retrievals of the CO2 total column

Identifieur interne : 000843 ( Istex/Checkpoint ); précédent : 000842; suivant : 000844

Global CO2fluxes inferred from surface air‐sample measurements and from TCCON retrievals of the CO2 total column

Auteurs : F. Chevallier [France] ; N. M. Deutscher [Allemagne, Australie] ; T. J. Conway [États-Unis] ; P. Ciais [France] ; L. Ciattaglia [Italie] ; S. Dohe [Allemagne] ; M. Fröhlich [Autriche] ; A. J. Gomez-Pelaez [Espagne] ; D. Griffith [Australie] ; F. Hase [Allemagne] ; L. Haszpra [Hongrie] ; P. Krummel [Australie] ; E. Kyrö [Finlande] ; C. Labuschagne [Afrique du Sud] ; R. Langenfelds [Australie] ; T. Machida [Japon] ; F. Maignan [France] ; H. Matsueda [Japon] ; I. Morino [Japon] ; J. Notholt [Allemagne] ; M. Ramonet [France] ; Y. Sawa [Japon] ; M. Schmidt [France] ; V. Sherlock [Nouvelle-Zélande] ; P. Steele [Australie] ; K. Strong [Canada] ; R. Sussmann [Allemagne] ; P. Wennberg [États-Unis] ; S. Wofsy [États-Unis] ; D. Worthy [Canada] ; D. Wunch [États-Unis] ; M. Zimnoch [Pologne]

Source :

RBID : ISTEX:3C87629EB9C552AA63DEF253A194023C11F73AAC

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English descriptors

Abstract

We present the first estimate of the global distribution of CO2surface fluxes from 14 stations of the Total Carbon Column Observing Network (TCCON). The evaluation of this inversion is based on 1) comparison with the fluxes from a classical inversion of surface air‐sample‐measurements, and 2) comparison of CO2mixing ratios calculated from the inverted fluxes with independent aircraft measurements made during the two years analyzed here, 2009 and 2010. The former test shows similar seasonal cycles in the northern hemisphere and consistent regional carbon budgets between inversions from the two datasets, even though the TCCON inversion appears to be less precise than the classical inversion. The latter test confirms that the TCCON inversion has improved the quality (i.e., reduced the uncertainty) of the surface fluxes compared to the assumed or prior fluxes. The consistency between the surface‐air‐sample‐based and the TCCON‐based inversions despite remaining flaws in transport models opens the possibility of increased accuracy and robustness of flux inversions based on the combination of both data sources and confirms the usefulness of space‐borne monitoring of the CO2 column.

Url:
DOI: 10.1029/2011GL049899


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ISTEX:3C87629EB9C552AA63DEF253A194023C11F73AAC

Le document en format XML

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<wicri:regionArea>Environment Canada, Downsview, Ontario</wicri:regionArea>
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</affiliation>
</author>
<author>
<name sortKey="Wunch, D" sort="Wunch, D" uniqKey="Wunch D" first="D." last="Wunch">D. Wunch</name>
<affiliation wicri:level="2">
<country xml:lang="fr">États-Unis</country>
<wicri:regionArea>Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, California</wicri:regionArea>
<placeName>
<region type="state">Californie</region>
</placeName>
</affiliation>
</author>
<author>
<name sortKey="Zimnoch, M" sort="Zimnoch, M" uniqKey="Zimnoch M" first="M." last="Zimnoch">M. Zimnoch</name>
<affiliation wicri:level="1">
<country xml:lang="fr">Pologne</country>
<wicri:regionArea>Faculty of Physics and Applied Computer Science, AGH University of Science and Technology, Krakow</wicri:regionArea>
<wicri:noRegion>Krakow</wicri:noRegion>
</affiliation>
</author>
</analytic>
<monogr></monogr>
<series>
<title level="j" type="main">Geophysical Research Letters</title>
<title level="j" type="alt">GEOPHYSICAL RESEARCH LETTERS</title>
<idno type="ISSN">0094-8276</idno>
<idno type="eISSN">1944-8007</idno>
<imprint>
<biblScope unit="vol">38</biblScope>
<biblScope unit="issue">24</biblScope>
<biblScope unit="page-count">5</biblScope>
<date type="published" when="2011-12-28">2011-12-28</date>
</imprint>
<idno type="ISSN">0094-8276</idno>
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<idno type="ISSN">0094-8276</idno>
</seriesStmt>
</fileDesc>
<profileDesc>
<textClass>
<keywords scheme="KwdEn" xml:lang="en">
<term>African weather service</term>
<term>Annual budgets</term>
<term>Arctic research centre</term>
<term>Atmospheric carbon dioxide</term>
<term>Atmospheric measurements</term>
<term>Atmospheric research</term>
<term>Atmospheric transport</term>
<term>Auxiliary material</term>
<term>Boundary layer</term>
<term>California institute</term>
<term>Carbon budgets</term>
<term>Carbon source</term>
<term>Chevallier</term>
<term>Classical inversion</term>
<term>Commercial observations</term>
<term>Computer science</term>
<term>Contrail flights</term>
<term>Csiro marine</term>
<term>Database</term>
<term>Earth system research laboratory</term>
<term>Environment canada</term>
<term>Environmental physics</term>
<term>Environmental studies</term>
<term>First inversion</term>
<term>Flux inversions</term>
<term>Fossil fuel emissions</term>
<term>Free troposphere</term>
<term>Geophys</term>
<term>Global</term>
<term>Growth rate</term>
<term>Harvard university</term>
<term>Hiaper observations</term>
<term>Hippo</term>
<term>Hippo flights</term>
<term>Hippo measurements</term>
<term>Ibaraki japan</term>
<term>Inversion</term>
<term>Inversion method</term>
<term>Inversion system</term>
<term>Inverted fluxes</term>
<term>Karlsruhe institute</term>
<term>Land regions</term>
<term>Meteorological research institute</term>
<term>Meteorological state agency</term>
<term>Mole fractions</term>
<term>National institute</term>
<term>Noaa</term>
<term>Northern hemisphere</term>
<term>Planetary sciences</term>
<term>Positive fluxes</term>
<term>Regional scale</term>
<term>Retrieval</term>
<term>Sampling network</term>
<term>Santa cruz</term>
<term>Seasonal cycle</term>
<term>Sign convention</term>
<term>Simulation</term>
<term>Standard deviation</term>
<term>Standard deviations</term>
<term>Surface fluxes</term>
<term>Surface measurements</term>
<term>Surface stations</term>
<term>Tccon</term>
<term>Tccon inversion</term>
<term>Tccon retrievals</term>
<term>Tccon stations</term>
<term>Total carbon column</term>
<term>Total column</term>
<term>Total columns</term>
<term>Transport models</term>
<term>Umweltbundesamt gmbh</term>
<term>Various measurements</term>
</keywords>
<keywords scheme="Teeft" xml:lang="en">
<term>African weather service</term>
<term>Annual budgets</term>
<term>Arctic research centre</term>
<term>Atmospheric carbon dioxide</term>
<term>Atmospheric measurements</term>
<term>Atmospheric research</term>
<term>Atmospheric transport</term>
<term>Auxiliary material</term>
<term>Boundary layer</term>
<term>California institute</term>
<term>Carbon budgets</term>
<term>Carbon source</term>
<term>Chevallier</term>
<term>Classical inversion</term>
<term>Commercial observations</term>
<term>Computer science</term>
<term>Contrail flights</term>
<term>Csiro marine</term>
<term>Database</term>
<term>Earth system research laboratory</term>
<term>Environment canada</term>
<term>Environmental physics</term>
<term>Environmental studies</term>
<term>First inversion</term>
<term>Flux inversions</term>
<term>Fossil fuel emissions</term>
<term>Free troposphere</term>
<term>Geophys</term>
<term>Global</term>
<term>Growth rate</term>
<term>Harvard university</term>
<term>Hiaper observations</term>
<term>Hippo</term>
<term>Hippo flights</term>
<term>Hippo measurements</term>
<term>Ibaraki japan</term>
<term>Inversion</term>
<term>Inversion method</term>
<term>Inversion system</term>
<term>Inverted fluxes</term>
<term>Karlsruhe institute</term>
<term>Land regions</term>
<term>Meteorological research institute</term>
<term>Meteorological state agency</term>
<term>Mole fractions</term>
<term>National institute</term>
<term>Noaa</term>
<term>Northern hemisphere</term>
<term>Planetary sciences</term>
<term>Positive fluxes</term>
<term>Regional scale</term>
<term>Retrieval</term>
<term>Sampling network</term>
<term>Santa cruz</term>
<term>Seasonal cycle</term>
<term>Sign convention</term>
<term>Simulation</term>
<term>Standard deviation</term>
<term>Standard deviations</term>
<term>Surface fluxes</term>
<term>Surface measurements</term>
<term>Surface stations</term>
<term>Tccon</term>
<term>Tccon inversion</term>
<term>Tccon retrievals</term>
<term>Tccon stations</term>
<term>Total carbon column</term>
<term>Total column</term>
<term>Total columns</term>
<term>Transport models</term>
<term>Umweltbundesamt gmbh</term>
<term>Various measurements</term>
</keywords>
<keywords scheme="Wicri" type="topic" xml:lang="fr">
<term>Base de données</term>
<term>Simulation</term>
</keywords>
</textClass>
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<front>
<div type="abstract">We present the first estimate of the global distribution of CO2surface fluxes from 14 stations of the Total Carbon Column Observing Network (TCCON). The evaluation of this inversion is based on 1) comparison with the fluxes from a classical inversion of surface air‐sample‐measurements, and 2) comparison of CO2mixing ratios calculated from the inverted fluxes with independent aircraft measurements made during the two years analyzed here, 2009 and 2010. The former test shows similar seasonal cycles in the northern hemisphere and consistent regional carbon budgets between inversions from the two datasets, even though the TCCON inversion appears to be less precise than the classical inversion. The latter test confirms that the TCCON inversion has improved the quality (i.e., reduced the uncertainty) of the surface fluxes compared to the assumed or prior fluxes. The consistency between the surface‐air‐sample‐based and the TCCON‐based inversions despite remaining flaws in transport models opens the possibility of increased accuracy and robustness of flux inversions based on the combination of both data sources and confirms the usefulness of space‐borne monitoring of the CO2 column.</div>
</front>
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<li>Allemagne</li>
<li>Australie</li>
<li>Autriche</li>
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<li>Finlande</li>
<li>France</li>
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<li>Île-de-France</li>
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<li>Budapest</li>
<li>Cambridge (Massachusetts)</li>
<li>Gif-sur-Yvette</li>
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<li>Toronto</li>
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<li>Université Harvard</li>
<li>Université de Toronto</li>
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