Research Spotlight: Simulating ocean carbon storage during the Last Glacial Maximum
Identifieur interne : 000141 ( Istex/Corpus ); précédent : 000140; suivant : 000142Research Spotlight: Simulating ocean carbon storage during the Last Glacial Maximum
Auteurs : Ernie TretkoffSource :
- Eos, Transactions American Geophysical Union [ 0096-3941 ] ; 2011-03-08.
English descriptors
- KwdEn :
- Arctic, Arctic ocean, Arctic summer, Carbon cycle, Climate change, Climate models, Cultural legitimacy, Exergy, Geophysical, Geophysical research letters, Global carbon cycle, Goce, Gravity field, Greenhouse gases, Life cycle assessment, Lower atmosphere, Nitric, Nitric oxide, Nitric oxide emissions, Ocean currents.
- Teeft :
- Arctic, Arctic ocean, Arctic summer, Carbon cycle, Climate change, Climate models, Cultural legitimacy, Exergy, Geophysical, Geophysical research letters, Global carbon cycle, Goce, Gravity field, Greenhouse gases, Life cycle assessment, Lower atmosphere, Nitric, Nitric oxide, Nitric oxide emissions, Ocean currents.
Abstract
During the cold period of the Last Glacial Maximum, about 21,000 years ago, atmospheric carbon dioxide (CO2)concentration was about 190 parts per million, compared to 280 parts per million in the preindustrial era and about 385 parts per million today. While less carbon was stored in the atmosphere during the Last Glacial Maximum, the oceans probably held more carbon. Atmospheric carbon isotope ratios (δ13C) were similar to today's values, but the oceans had a steeper surface‐to‐deep gradient in δ13C. Previous simulations had trouble simulating simultaneously atmospheric CO2 levels and oceanic δ13C. To reconcile both data, Bouttes et al. ran simulations including a new combination of three mechanisms: brine‐induced ocean stratification, stratification‐dependent diffusion, and iron fertilization. Including these effects made it possible to account for the recorded glacial carbon cycle changes, reconciling the Last Glacial Maximum δ13C values and atmospheric CO2 levels. (Geophysical Research Letters, doi:10.1029/2010GL044499, 2011)
Url:
DOI: 10.1029/2011EO100011
Links to Exploration step
ISTEX:63DA1D22359AA076C852ACCDE2F8C89A1A18293DLe document en format XML
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AGU</journalTitle>, <vol>92</vol>(<issue>10</issue>), <pageFirst>88</pageFirst>.</citation></selfCitationGroup><linkGroup><link type="toTypesetVersion" href="file:EOST.EOST17702.pdf"></link></linkGroup></publicationMeta><contentMeta><countGroup><count type="wordTotal" number="1400"></count></countGroup><titleGroup><title type="main">Research Spotlight: Simulating ocean carbon storage during the Last Glacial Maximum</title><title type="shortAuthors">Tretkoff</title></titleGroup><creators><creator xml:id="eost17702-cr-0001" creatorRole="author" affiliationRef="#eost17702-aff-0001"><personName><givenNames>Ernie</givenNames><familyName>Tretkoff</familyName></personName></creator></creators><affiliationGroup><affiliation xml:id="eost17702-aff-0001" countryCode="US" type="organization"><unparsedAffiliation>American Geophysical Union,Washington, D. C., USA</unparsedAffiliation></affiliation></affiliationGroup><keywordGroup type="author"><keyword xml:id="eost17702-kwd-0001">CO<sub>2</sub></keyword><keyword xml:id="eost17702-kwd-0002">glacial</keyword><keyword xml:id="eost17702-kwd-0003">carbon‐13</keyword></keywordGroup><abstractGroup><abstract type="main"><p xml:id="eost17702-para-0001" label="1">During the cold period of the Last Glacial Maximum, about 21,000 years ago, atmospheric carbon dioxide (CO<sub>2</sub>)concentration was about 190 parts per million, compared to 280 parts per million in the preindustrial era and about 385 parts per million today. While less carbon was stored in the atmosphere during the Last Glacial Maximum, the oceans probably held more carbon. Atmospheric carbon isotope ratios (δ<sup>13</sup>C) were similar to today's values, but the oceans had a steeper surface‐to‐deep gradient in δ<sup>13</sup>C. Previous simulations had trouble simulating simultaneously atmospheric CO<sub>2</sub> levels and oceanic δ<sup>13</sup>C. To reconcile both data, <i>Bouttes et al.</i> ran simulations including a new combination of three mechanisms: brine‐induced ocean stratification, stratification‐dependent diffusion, and iron fertilization. Including these effects made it possible to account for the recorded glacial carbon cycle changes, reconciling the Last Glacial Maximum δ<sup>13</sup>C values and atmospheric CO<sub>2</sub> levels. (<i>Geophysical Research Letters</i>, doi:10.1029/2010GL044499, 2011)</p></abstract></abstractGroup></contentMeta></header></component></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>Research Spotlight: Simulating ocean carbon storage during the Last Glacial Maximum</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>Research Spotlight: Simulating ocean carbon storage during the Last Glacial Maximum</title></titleInfo><name type="personal"><namePart type="given">Ernie</namePart><namePart type="family">Tretkoff</namePart><affiliation>American Geophysical Union,Washington, D. 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AGU, 92(10), 88.</edition><copyrightDate encoding="w3cdtf">2011</copyrightDate></originInfo><language><languageTerm type="code" authority="rfc3066">en</languageTerm><languageTerm type="code" authority="iso639-2b">eng</languageTerm></language><physicalDescription><internetMediaType>text/html</internetMediaType><extent unit="words">1400</extent></physicalDescription><abstract>During the cold period of the Last Glacial Maximum, about 21,000 years ago, atmospheric carbon dioxide (CO2)concentration was about 190 parts per million, compared to 280 parts per million in the preindustrial era and about 385 parts per million today. While less carbon was stored in the atmosphere during the Last Glacial Maximum, the oceans probably held more carbon. Atmospheric carbon isotope ratios (δ13C) were similar to today's values, but the oceans had a steeper surface‐to‐deep gradient in δ13C. Previous simulations had trouble simulating simultaneously atmospheric CO2 levels and oceanic δ13C. To reconcile both data, Bouttes et al. ran simulations including a new combination of three mechanisms: brine‐induced ocean stratification, stratification‐dependent diffusion, and iron fertilization. Including these effects made it possible to account for the recorded glacial carbon cycle changes, reconciling the Last Glacial Maximum δ13C values and atmospheric CO2 levels. (Geophysical Research Letters, doi:10.1029/2010GL044499, 2011)</abstract><subject><genre>keywords</genre><topic>CO2</topic><topic>glacial</topic><topic>carbon‐13</topic></subject><relatedItem type="host"><titleInfo><title>Eos, Transactions American Geophysical Union</title></titleInfo><titleInfo type="abbreviated"><title>Eos Trans. AGU</title></titleInfo><genre type="journal">journal</genre><subject><genre>index-terms</genre><topic authorityURI="http://psi.agu.org/taxonomy5/0400">BIOGEOSCIENCES</topic><topic authorityURI="http://psi.agu.org/taxonomy5/0412">Biogeochemical kinetics and reaction modeling</topic><topic authorityURI="http://psi.agu.org/taxonomy5/0414">Biogeochemical cycles, processes, and modeling</topic><topic authorityURI="http://psi.agu.org/taxonomy5/0700">CRYOSPHERE</topic><topic authorityURI="http://psi.agu.org/taxonomy5/0793">Biogeochemistry</topic><topic authorityURI="http://psi.agu.org/taxonomy5/1600">GLOBAL CHANGE</topic><topic authorityURI="http://psi.agu.org/taxonomy5/1615">Biogeochemical cycles, processes, and modeling</topic><topic authorityURI="http://psi.agu.org/taxonomy5/4800">OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL</topic><topic authorityURI="http://psi.agu.org/taxonomy5/4805">Biogeochemical cycles, processes, and modeling</topic><topic authorityURI="http://psi.agu.org/taxonomy5/4900">PALEOCEANOGRAPHY</topic><topic authorityURI="http://psi.agu.org/taxonomy5/4926">Glacial</topic><topic authorityURI="http://psi.agu.org/taxonomy5/4912">Biogeochemical cycles, processes, and modeling</topic><topic authorityURI="http://psi.agu.org/taxonomy5/4930">Greenhouse gases</topic></subject><subject><genre>article-category</genre><topic>Research spotlight</topic></subject><identifier type="ISSN">0096-3941</identifier><identifier type="eISSN">2324-9250</identifier><identifier type="DOI">10.1002/(ISSN)2324-9250</identifier><identifier type="CODEN">ETAGCT</identifier><identifier type="PublisherID">EOST</identifier><part><date>2011</date><detail type="volume"><caption>vol.</caption><number>92</number></detail><detail type="issue"><caption>no.</caption><number>10</number></detail><extent unit="pages"><start>88</start><end>88</end><total>1</total></extent></part></relatedItem><identifier type="istex">63DA1D22359AA076C852ACCDE2F8C89A1A18293D</identifier><identifier type="DOI">10.1029/2011EO100011</identifier><identifier type="ArticleID">EOST17702</identifier><accessCondition type="use and reproduction" contentType="copyright">Copyright 2011 by the American Geophysical Union</accessCondition><recordInfo><recordContentSource>WILEY</recordContentSource></recordInfo></mods><json:item><extension>json</extension><original>false</original><mimetype>application/json</mimetype><uri>https://api.istex.fr/document/63DA1D22359AA076C852ACCDE2F8C89A1A18293D/metadata/json</uri></json:item></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
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