Interannual variability of the global carbon cycle (1992-2005) inferred by inversion of atmospheric CO2 and δ13CO2measurements
Identifieur interne : 009553 ( Main/Merge ); précédent : 009552; suivant : 009554Interannual variability of the global carbon cycle (1992-2005) inferred by inversion of atmospheric CO2 and δ13CO2measurements
Auteurs : P. J. Rayner [France] ; R. M. Law [Australie] ; C. E. Allison [Australie] ; R. J. Francey [Australie] ; C. M. Trudinger [Australie] ; C. Pickett-Heaps [France]Source :
- Global biogeochemical cycles [ 0886-6236 ] ; 2008.
Descripteurs français
- Pascal (Inist)
- Wicri :
- topic : Atmosphère, Océan, Biomasse.
English descriptors
- KwdEn :
Abstract
[1] We present estimates of the surface sources and sinks of CO2 for 1992-2005 deduced from atmospheric inversions. We use atmospheric CO2 records from 67 sites and 10 δ13CO2 records. We use two atmospheric models to increase the robustness of the results. The results suggest that interannual variability is dominated by the tropical land. Statistically significant variability in the tropical Pacific supports recent ocean modeling studies in that region. The northern land also shows significant variability. In particular, there is a large positive anomaly in 2003 in north Asia, which we associate with anomalous biomass burning. Results using δ13CO2and CO2 are statistically consistent with those using only CO2, suggesting that it is valid to use both types of data together. An objective analysis of residuals suggests that our treatment of uncertainties in CO2 is conservative, while those for δ13CO2 are optimistic, highlighting problems in our simple isotope model. Finally, δ13CO2 measurements offer a good constraint to nearby land regions, suggesting an ongoing value in these measurements for studies of interannual variability.
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Pascal:08-0524138Le document en format XML
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J." last="Rayner">P. J. Rayner</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>Laboratoire des Sciences du Climat et de l'Environnement, LSCE, IPSL, CEA, CNRS, UVSQ</s1><s2>Gif sur Yvette</s2><s3>FRA</s3><sZ>1 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Gif-sur-Yvette</settlement></placeName></affiliation></author><author><name sortKey="Law, R M" sort="Law, R M" uniqKey="Law R" first="R. M." last="Law">R. M. Law</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>CSIRO Marine and Atmospheric Research</s1><s2>Aspendale, Victoria</s2><s3>AUS</s3><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>CSIRO Marine and Atmospheric Research</wicri:noRegion></affiliation></author><author><name sortKey="Allison, C E" sort="Allison, C E" uniqKey="Allison C" first="C. E." last="Allison">C. E. Allison</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>CSIRO Marine and Atmospheric Research</s1><s2>Aspendale, Victoria</s2><s3>AUS</s3><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>CSIRO Marine and Atmospheric Research</wicri:noRegion></affiliation></author><author><name sortKey="Francey, R J" sort="Francey, R J" uniqKey="Francey R" first="R. J." last="Francey">R. J. Francey</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>CSIRO Marine and Atmospheric Research</s1><s2>Aspendale, Victoria</s2><s3>AUS</s3><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>CSIRO Marine and Atmospheric Research</wicri:noRegion></affiliation></author><author><name sortKey="Trudinger, C M" sort="Trudinger, C M" uniqKey="Trudinger C" first="C. M." last="Trudinger">C. M. Trudinger</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>CSIRO Marine and Atmospheric Research</s1><s2>Aspendale, Victoria</s2><s3>AUS</s3><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>CSIRO Marine and Atmospheric Research</wicri:noRegion></affiliation></author><author><name sortKey="Pickett Heaps, C" sort="Pickett Heaps, C" uniqKey="Pickett Heaps C" first="C." last="Pickett-Heaps">C. Pickett-Heaps</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>Laboratoire des Sciences du Climat et de l'Environnement, LSCE, IPSL, CEA, CNRS, UVSQ</s1><s2>Gif sur Yvette</s2><s3>FRA</s3><sZ>1 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Gif-sur-Yvette</settlement></placeName></affiliation></author></analytic><series><title level="j" type="main">Global biogeochemical cycles</title><title level="j" type="abbreviated">Glob. biogeochem. cycles</title><idno type="ISSN">0886-6236</idno><imprint><date when="2008">2008</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Global biogeochemical cycles</title><title level="j" type="abbreviated">Glob. biogeochem. cycles</title><idno type="ISSN">0886-6236</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Asia</term><term>Burned ground</term><term>Carbon dioxide</term><term>Modeling</term><term>anomalies</term><term>atmosphere</term><term>biomass</term><term>carbon cycle</term><term>global</term><term>inverse problem</term><term>isotopes</term><term>models</term><term>ocean</term><term>uncertainties</term><term>variability</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Variabilité</term><term>Monde</term><term>Cycle carbone</term><term>Problème inverse</term><term>Atmosphère</term><term>Dioxyde de carbone</term><term>Modèle</term><term>Océan</term><term>Modélisation</term><term>Anomalie</term><term>Asie</term><term>Biomasse</term><term>Brûlis</term><term>Incertitude</term><term>Isotope</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Atmosphère</term><term>Océan</term><term>Biomasse</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">[1] We present estimates of the surface sources and sinks of CO<sub>2</sub> for 1992-2005 deduced from atmospheric inversions. We use atmospheric CO<sub>2</sub> records from 67 sites and 10 δ<sup>13</sup>CO<sub>2</sub> records. We use two atmospheric models to increase the robustness of the results. The results suggest that interannual variability is dominated by the tropical land. Statistically significant variability in the tropical Pacific supports recent ocean modeling studies in that region. The northern land also shows significant variability. In particular, there is a large positive anomaly in 2003 in north Asia, which we associate with anomalous biomass burning. Results using δ<sup>13</sup>CO<sub>2</sub>and CO<sub>2</sub> are statistically consistent with those using only CO<sub>2</sub>, suggesting that it is valid to use both types of data together. An objective analysis of residuals suggests that our treatment of uncertainties in CO<sub>2</sub> is conservative, while those for δ<sup>13</sup>CO<sub>2</sub> are optimistic, highlighting problems in our simple isotope model. Finally, δ<sup>13</sup>CO<sub>2</sub> measurements offer a good constraint to nearby land regions, suggesting an ongoing value in these measurements for studies of interannual variability.</div></front></TEI><affiliations><list><country><li>Australie</li><li>France</li></country><region><li>Île-de-France</li></region><settlement><li>Gif-sur-Yvette</li></settlement></list><tree><country name="France"><region name="Île-de-France"><name sortKey="Rayner, P J" sort="Rayner, P J" uniqKey="Rayner P" first="P. J." last="Rayner">P. J. Rayner</name></region><name sortKey="Pickett Heaps, C" sort="Pickett Heaps, C" uniqKey="Pickett Heaps C" first="C." last="Pickett-Heaps">C. Pickett-Heaps</name></country><country name="Australie"><noRegion><name sortKey="Law, R M" sort="Law, R M" uniqKey="Law R" first="R. M." last="Law">R. M. Law</name></noRegion><name sortKey="Allison, C E" sort="Allison, C E" uniqKey="Allison C" first="C. E." last="Allison">C. E. Allison</name><name sortKey="Francey, R J" sort="Francey, R J" uniqKey="Francey R" first="R. J." last="Francey">R. J. Francey</name><name sortKey="Trudinger, C M" sort="Trudinger, C M" uniqKey="Trudinger C" first="C. M." last="Trudinger">C. M. Trudinger</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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