{"id":1752,"date":"2022-07-22T16:11:07","date_gmt":"2022-07-22T14:11:07","guid":{"rendered":"https:\/\/www.cerege.fr\/?page_id=1752"},"modified":"2024-09-16T21:12:35","modified_gmt":"2024-09-16T19:12:35","slug":"climate-and-carbon-cycle-forcings","status":"publish","type":"page","link":"https:\/\/www.cerege.fr\/en\/sciences\/climat\/forcages-climatiques-et-cycle-du-carbone\/","title":{"rendered":"Climate forcing and the carbon cycle"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"1752\" class=\"elementor elementor-1752\" data-elementor-post-type=\"page\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-7685c291 elementor-section-full_width elementor-section-height-min-height elementor-section-height-default elementor-section-items-middle\" data-id=\"7685c291\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-59fcd0e8\" data-id=\"59fcd0e8\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-3ee3193b elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"3ee3193b\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-1a8df35c\" data-id=\"1a8df35c\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-2793546a elementor-widget elementor-widget-shortcode\" data-id=\"2793546a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"shortcode.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-shortcode\"><nav aria-label=\"breadcrumbs\">\n            <div class=\"breadcrumb-container theme1\">\n                <ol>\n                                    <\/ol>\n            <\/div>\n        <\/nav>    <script type=\"application\/ld+json\">\n        {\n            \"@context\": \"http:\/\/schema.org\",\n            \"@type\": \"BreadcrumbList\",\n            \"itemListElement\": [\n                            ]\n        }\n    <\/script>\n   \n    <script>\n            <\/script>\n<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-cb03de0 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"cb03de0\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-wide\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-ebdd705\" data-id=\"ebdd705\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-3d1c9339 elementor-widget elementor-widget-text-editor\" data-id=\"3d1c9339\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>L&#8217;\u00e9tude de <strong>l&#8217;\u00e9volution de l&#8217;effet de serre<\/strong> et des <strong>m\u00e9canismes r\u00e9gulant le cycle du carbone<\/strong>, \u00e0 toutes les \u00e9chelles de temps, est l&#8217;un des axes centraux de l&#8217;\u00e9quipe Climat. Nous \u00e9tudions les<strong> for\u00e7ages climatiques solaire et volcanique<\/strong> au cours du dernier mill\u00e9naire \u00e0 partir d\u2019enregistrements de la concentration en <strong>10Be<\/strong> dans des carottes de <strong>glace de l\u2019Antarctique<\/strong>. Nos reconstitutions de ces for\u00e7ages ont contribu\u00e9 \u00e0 la <strong>comparaison des mod\u00e8les climatiques<\/strong> (CMIP6 et PMIP4) du dernier rapport du <strong>GIEC<\/strong>. Pour compl\u00e9ter et mieux comprendre les informations fournies par le 10Be, nous avons d\u00e9velopp\u00e9 la mesure du <strong>36Cl dans les glaces polaires<\/strong>, un autre indicateur climatique. Leur rapport isotopique est \u00e9galement un outil de datation important pour les carottes de glace. Ces approches sont d\u00e9velopp\u00e9es dans le cadre de plusieurs projets internationaux (projet H2020 Beyond EPICA-Oldest Ice, 2019-2026, ANR ToBE 2023-2027, tous les deux port\u00e9s au CEREGE par<a href=\"https:\/\/www.cerege.fr\/fr\/cerege\/melanie-baroni\/\"> M\u00e9lanie Baroni<\/a>). Un autre aspect de ces travaux se base sur la mesure du <strong>14C \u00e0 r\u00e9solution annuelle dans des bois subfossiles<\/strong> couvrant la derni\u00e8re d\u00e9glaciation (<a href=\"https:\/\/www.cerege.fr\/fr\/sciences\/climat\/projets-climat\/anr-marcara\/\">ANR MARCARA<\/a>, 2021-2025, suite du projet ANR CARBOTRYDH, port\u00e9s par <a href=\"https:\/\/www.cerege.fr\/fr\/cerege\/edouard-bard\/\">Edouard Bard<\/a>). Nos enregistrements r\u00e9alis\u00e9s sur des bois provenant des Alpes fran\u00e7aises sont compar\u00e9s \u00e0 des r\u00e9sultats similaires pour l\u2019h\u00e9misph\u00e8re sud (Nouvelle-Z\u00e9lande et Tasmanie) et aux enregistrements des cosmonucl\u00e9ides dans les glaces polaires, ainsi qu\u2019\u00e0 des mesures de 14C dans les foraminif\u00e8res planctoniques pour \u00e9valuer les \u00e9changes air-mer de CO2. L\u2019ensemble de ces donn\u00e9es permettent d\u2019am\u00e9liorer la <strong>calibration du radiochronom\u00e8tre 14C<\/strong>, essentiel pour le tra\u00e7age et la quantification des processus dans le cycle du carbone. <br \/>L&#8217;<strong>\u00e9volution de la production biog\u00e9nique carbonat\u00e9e a \u00e9t\u00e9 montr\u00e9e comme contr\u00f4lant la partie inorganique du cycle du carbone oc\u00e9anique<\/strong> au cours des temps g\u00e9ologiques, et son \u00e9tude fait partie des points forts de l&#8217;\u00e9quipe. R\u00e9cemment, le projet <a href=\"https:\/\/www.cerege.fr\/fr\/sciences\/climat\/projets-climat\/anr-jcjc-miocarb\/\">ANR MioCarb<\/a> (2020-2024), port\u00e9 par <a href=\"https:\/\/www.cerege.fr\/fr\/cerege\/baptiste-sucheras-marx\/\">Baptiste Such\u00e9ras-Marx<\/a>, se focalise sur l&#8217;\u00e9tude de cette production au cours de la fin du Mioc\u00e8ne et la base du Plioc\u00e8ne. L&#8217;<strong>\u00e9tude du syst\u00e8me carbonate dans le cycle du carbone<\/strong> vient aussi d\u2019\u00eatre renforc\u00e9e par le recrutement d\u2019<a href=\"https:\/\/www.cerege.fr\/fr\/cerege\/olivier-sulpis\/\">Olivier Sulpis<\/a> (CR CNRS ; 2022). <br \/><a href=\"https:\/\/www.cerege.fr\/fr\/cerege\/thomas-chalk\/\">Tom Chalk<\/a> (CR CNRS ; 2023), laur\u00e9at d\u2019un financement <a href=\"https:\/\/www.cerege.fr\/fr\/sciences\/climat\/projets-climat\/erc-forcry\/\">ERC-StG ForCry<\/a> en 2022, vient contribuer au d\u00e9veloppement analytique de cette th\u00e9matique avec l\u2019<strong>analyse des isotopes stables du bore<\/strong>. L\u2019application de cette m\u00e9thode de pointe permet de <strong>reconstruire le pH et l\u2019\u00e9volution du CO2 atmosph\u00e9rique au cours du N\u00e9og\u00e8ne<\/strong>, toujours dans l\u2019optique de reconstruire l\u2019\u00e9volution du cycle de carbone \u00e0 l\u2019\u00e9chelle des temps g\u00e9ologiques. <br \/>Enfin, le projet <a href=\"https:\/\/www.cerege.fr\/sciences\/climat\/projets-climat\/anr-oracle\/\">ANR-PRCI ORACLE<\/a>, financ\u00e9 en 2022 et port\u00e9 par <a href=\"https:\/\/www.cerege.fr\/fr\/cerege\/yannick-garcin\/\">Yannick Garcin<\/a>, se focalise sur l&#8217;\u00e9tude du carbone des sols. <a href=\"https:\/\/www.cerege.fr\/sciences\/climat\/projets-climat\/anr-oracle\/\">ORACLE<\/a> propose de reconstituer l\u2019<strong>histoire holoc\u00e8ne des tourbes du Congo<\/strong> dans l\u2019objectif de mieux comprendre le cycle du carbone tropical et la dynamique hydroclimatique de cette r\u00e9gion du monde.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-4370e2c\" data-id=\"4370e2c\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-603b56f elementor-widget elementor-widget-image\" data-id=\"603b56f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"528\" height=\"352\" src=\"https:\/\/www.cerege.fr\/wp-content\/uploads\/2022\/10\/photo_projets_glacio.png\" class=\"attachment-large size-large wp-image-4877\" alt=\"\" srcset=\"https:\/\/www.cerege.fr\/wp-content\/uploads\/2022\/10\/photo_projets_glacio.png 528w, https:\/\/www.cerege.fr\/wp-content\/uploads\/2022\/10\/photo_projets_glacio-300x200.png 300w, https:\/\/www.cerege.fr\/wp-content\/uploads\/2022\/10\/photo_projets_glacio-18x12.png 18w\" sizes=\"(max-width: 528px) 100vw, 528px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b7ac847 elementor-widget elementor-widget-text-editor\" data-id=\"b7ac847\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h3 style=\"padding-left: 40px;\"><span style=\"font-weight: normal;\"><span style=\"color: #0f72bb;\">Projets<\/span><\/span><\/h3><ul><li>2024-2029 : <a href=\"https:\/\/www.cerege.fr\/fr\/sciences\/climat\/projets-climat\/deep-c-erc\/\"><strong>ERC Deep-C,<\/strong><\/a> Deep-sea carbonates under pressure: mechanisms of dissolution and climate feedbacks.<\/li><li><p>2022-2027 : <a href=\"https:\/\/www.cerege.fr\/fr\/sciences\/climat\/projets-climat\/erc-forcry\/\"><strong>ERC ForCry,<\/strong><\/a> \u00a0Explorer la structure changeante du syst\u00e8me carbonat\u00e9 oc\u00e9anique et l\u2019histoire naturelle du CO2 atmosph\u00e9rique en utilisant des proxies g\u00e9ochimiques.<\/p><\/li><li>2022-2025: <a href=\"https:\/\/www.cerege.fr\/sciences\/climat\/projets-climat\/anr-marcara\/\"><strong>ANR MARCARA<\/strong><\/a>: <em><em>MArine radioCArbon Reservoir Age variability and its implications in paleoceanography, paleoclimatology and geochronology<\/em><\/em><\/li><li>2020-2027: <a href=\"https:\/\/www.cerege.fr\/sciences\/climat\/projets-climat\/anr-h2020-2\/\"><strong>ANR H2020<\/strong><\/a>, <em><em>Toward Beyond-EPICA (ToBE)<\/em><\/em><\/li><li>2020-2024: <strong><a href=\"https:\/\/www.cerege.fr\/fr\/sciences\/climat\/projets-climat\/\">ANR MioCarb<\/a>, <\/strong><em><em>La transition Mio-Pliocene : mise en place du cycle du carbone moderne<\/em><\/em><\/li><li>2020-2024: <strong><a href=\"https:\/\/www.cerege.fr\/sciences\/climat\/projets-climat\/anr-oracle\/\">ANR-PRCI ORACLE<\/a>,<\/strong> <em>Dynamique hydroclimatique et cycle du carbone dans le bassin central du Congo au cours de l\u2019Holoc\u00e8ne<\/em><\/li><li>2019-2026: <strong><a href=\"https:\/\/www.cerege.fr\/sciences\/climat\/projets-climat\/anr-h2020\/\">H2020<\/a>\u00a0<\/strong>: <em><em>Beyond-EPICA &#8211; Oldest Ice (BE-OIC)<\/em><\/em><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>L&#8217;\u00e9tude de l&#8217;\u00e9volution de l&#8217;effet de serre et des m\u00e9canismes r\u00e9gulant le cycle du carbone, \u00e0 toutes les \u00e9chelles de temps, est l&#8217;un des axes centraux de l&#8217;\u00e9quipe Climat. Nous [&hellip;]<\/p>\n","protected":false},"author":551,"featured_media":1860,"parent":828,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-1752","page","type-page","status-publish","has-post-thumbnail","hentry"],"acf":[],"publishpress_future_action":{"enabled":false,"date":"2026-05-02 11:51:40","action":"change-status","newStatus":"draft","terms":[],"taxonomy":"","extraData":[]},"publishpress_future_workflow_manual_trigger":{"enabledWorkflows":[]},"_links":{"self":[{"href":"https:\/\/www.cerege.fr\/en\/wp-json\/wp\/v2\/pages\/1752","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.cerege.fr\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.cerege.fr\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.cerege.fr\/en\/wp-json\/wp\/v2\/users\/551"}],"replies":[{"embeddable":true,"href":"https:\/\/www.cerege.fr\/en\/wp-json\/wp\/v2\/comments?post=1752"}],"version-history":[{"count":5,"href":"https:\/\/www.cerege.fr\/en\/wp-json\/wp\/v2\/pages\/1752\/revisions"}],"predecessor-version":[{"id":25810,"href":"https:\/\/www.cerege.fr\/en\/wp-json\/wp\/v2\/pages\/1752\/revisions\/25810"}],"up":[{"embeddable":true,"href":"https:\/\/www.cerege.fr\/en\/wp-json\/wp\/v2\/pages\/828"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.cerege.fr\/en\/wp-json\/wp\/v2\/media\/1860"}],"wp:attachment":[{"href":"https:\/\/www.cerege.fr\/en\/wp-json\/wp\/v2\/media?parent=1752"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}