Impact of biogeochemical processes and environmental factors on the calcium carbonate saturation state in the Circumpolar Flaw Lead in the Amundsen Gulf, Arctic Ocean
Identifieur interne : 001606 ( Istex/Corpus ); précédent : 001605; suivant : 001607Impact of biogeochemical processes and environmental factors on the calcium carbonate saturation state in the Circumpolar Flaw Lead in the Amundsen Gulf, Arctic Ocean
Auteurs : Melissa Chierici ; Agneta Fransson ; Bruno Lansard ; Lisa A. Miller ; Alfonso Mucci ; Elizabeth Shadwick ; Helmuth Thomas ; J. Tremblay ; Tim N. PapakyriakouSource :
- Journal of Geophysical Research: Oceans [ 0148-0227 ] ; 2011-09.
Abstract
We report on measurements across an annual cycle of carbon dioxide system parameters in the polar mixed layer (PML) of the circumpolar flaw lead in the Amundsen Gulf, Arctic Ocean. From these and other properties (nitrate, S, T) of the PML, we found that biological processes (photosynthesis and respiration) accounted for about 50% of the monthly variations in the carbonate ion concentration, [CO32−] and Ω, the saturation state of these waters with respect to calcite (ΩCa) and aragonite (ΩAr). Vertical mixing and salinity changes had equal impacts over the annual cycle. The impact of sea ice meltwater resulted in decreasing Ω values in summer, but most of this change was offset by the Ω increase as a result of CO2 drawdown during biological photosynthesis.
Url:
DOI: 10.1029/2011JC007184
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Miller</name><affiliation><mods:affiliation>Institute of Ocean Sciences, Fisheries and Oceans Canada, Sidney, British Columbia, Canada</mods:affiliation></affiliation></author><author><name sortKey="Mucci, Alfonso" sort="Mucci, Alfonso" uniqKey="Mucci A" first="Alfonso" last="Mucci">Alfonso Mucci</name><affiliation><mods:affiliation>Center for Research in Isotopic Geochemistry and Geochronoloy (GEOTOP) and Department of Earth and Planetary Sciences, McGill University, Montreal, Quebec, Canada</mods:affiliation></affiliation></author><author><name sortKey="Shadwick, Elizabeth" sort="Shadwick, Elizabeth" uniqKey="Shadwick E" first="Elizabeth" last="Shadwick">Elizabeth Shadwick</name><affiliation><mods:affiliation>Department of Oceanography, Dalhousie University, Halifax, Nova Scotia, Canada</mods:affiliation></affiliation><affiliation><mods:affiliation>Now at Antarctic Climate and Ecosystems Cooperative Research Centre, University of Tasmania, Hobart, Tasmania, Australia</mods:affiliation></affiliation></author><author><name sortKey="Thomas, Helmuth" sort="Thomas, Helmuth" uniqKey="Thomas H" first="Helmuth" last="Thomas">Helmuth Thomas</name><affiliation><mods:affiliation>Department of Oceanography, Dalhousie University, Halifax, Nova Scotia, Canada</mods:affiliation></affiliation></author><author><name sortKey="Tremblay, J" sort="Tremblay, J" uniqKey="Tremblay J" first="J." last="Tremblay">J. 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From these and other properties (nitrate, S, T) of the PML, we found that biological processes (photosynthesis and respiration) accounted for about 50% of the monthly variations in the carbonate ion concentration, [CO32−] and Ω, the saturation state of these waters with respect to calcite (ΩCa) and aragonite (ΩAr). Vertical mixing and salinity changes had equal impacts over the annual cycle. The impact of sea ice meltwater resulted in decreasing Ω values in summer, but most of this change was offset by the Ω increase as a result of CO2 drawdown during biological photosynthesis.</div></front></TEI><istex><corpusName>wiley</corpusName><author><json:item><name>Melissa Chierici</name><affiliations><json:string>Department of Chemistry, University of Gothenburg, Göteborg, Sweden</json:string><json:string>Institute of Marine Research, Tromsø, Norway</json:string><json:string>E-mail: melissa@chem.gu.se</json:string></affiliations></json:item><json:item><name>Agneta Fransson</name><affiliations><json:string>Department of Earth Sciences, University of Gothenburg, Göteborg, Sweden</json:string></affiliations></json:item><json:item><name>Bruno Lansard</name><affiliations><json:string>Center for Research in Isotopic Geochemistry and Geochronoloy (GEOTOP) and Department of Earth and Planetary Sciences, McGill University, Montreal, Quebec, Canada</json:string></affiliations></json:item><json:item><name>Lisa A. Miller</name><affiliations><json:string>Institute of Ocean Sciences, Fisheries and Oceans Canada, Sidney, British Columbia, Canada</json:string></affiliations></json:item><json:item><name>Alfonso Mucci</name><affiliations><json:string>Center for Research in Isotopic Geochemistry and Geochronoloy (GEOTOP) and Department of Earth and Planetary Sciences, McGill University, Montreal, Quebec, Canada</json:string></affiliations></json:item><json:item><name>Elizabeth Shadwick</name><affiliations><json:string>Department of Oceanography, Dalhousie University, Halifax, Nova Scotia, Canada</json:string><json:string>Now at Antarctic Climate and Ecosystems Cooperative Research Centre, University of Tasmania, Hobart, Tasmania, Australia</json:string></affiliations></json:item><json:item><name>Helmuth Thomas</name><affiliations><json:string>Department of Oceanography, Dalhousie University, Halifax, Nova Scotia, Canada</json:string></affiliations></json:item><json:item><name>J.‐E. 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alkalinity</value></json:item></subject><articleId><json:string>2011JC007184</json:string></articleId><language><json:string>eng</json:string></language><originalGenre><json:string>article</json:string></originalGenre><qualityIndicators><score>7.988</score><pdfVersion>1.6</pdfVersion><pdfPageSize>612 x 792 pts (letter)</pdfPageSize><refBibsNative>true</refBibsNative><abstractCharCount>765</abstractCharCount><pdfWordCount>6340</pdfWordCount><pdfCharCount>37595</pdfCharCount><pdfPageCount>12</pdfPageCount><abstractWordCount>124</abstractWordCount></qualityIndicators><title>Impact of biogeochemical processes and environmental factors on the calcium carbonate saturation state in the Circumpolar Flaw Lead in the Amundsen Gulf, Arctic Ocean</title><genre><json:string>article</json:string></genre><host><title>Journal of Geophysical Research: 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cycling</value></json:item><json:item><value>CRYOSPHERE</value></json:item><json:item><value>Biogeochemistry</value></json:item><json:item><value>GLOBAL CHANGE</value></json:item><json:item><value>Biogeochemical cycles, processes, and modeling</value></json:item><json:item><value>OCEANOGRAPHY: GENERAL</value></json:item><json:item><value>Arctic and Antarctic oceanography</value></json:item><json:item><value>Diurnal, seasonal, and annual cycles</value></json:item><json:item><value>OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL</value></json:item><json:item><value>Biogeochemical cycles, processes, and modeling</value></json:item><json:item><value>Carbon cycling</value></json:item><json:item><value>PALEOCEANOGRAPHY</value></json:item><json:item><value>Biogeochemical cycles, processes, and modeling</value></json:item><json:item><value>GEOGRAPHIC LOCATION</value></json:item><json:item><value>Antarctica</value></json:item><json:item><value>Arctic region</value></json:item></subject></host><categories><wos><json:string>science</json:string><json:string>geosciences, multidisciplinary</json:string></wos><scienceMetrix><json:string>natural sciences</json:string><json:string>earth & environmental sciences</json:string><json:string>meteorology & atmospheric sciences</json:string></scienceMetrix></categories><publicationDate>2011</publicationDate><copyrightDate>2011</copyrightDate><doi><json:string>10.1029/2011JC007184</json:string></doi><id>F96D249D1212E6BCCC9C82123741664DCE40DAAF</id><fulltext><json:item><extension>pdf</extension><original>true</original><mimetype>application/pdf</mimetype><uri>https://api-v5.istex.fr/document/F96D249D1212E6BCCC9C82123741664DCE40DAAF/fulltext/pdf</uri></json:item><json:item><extension>zip</extension><original>false</original><mimetype>application/zip</mimetype><uri>https://api-v5.istex.fr/document/F96D249D1212E6BCCC9C82123741664DCE40DAAF/fulltext/zip</uri></json:item><istex:fulltextTEI 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type="first">Melissa</forename><surname>Chierici</surname></persName><email>melissa@chem.gu.se</email><affiliation>Department of Chemistry, University of Gothenburg, Göteborg, Sweden</affiliation><affiliation>Institute of Marine Research, Tromsø, Norway</affiliation></author><author xml:id="author-2"><persName><forename type="first">Agneta</forename><surname>Fransson</surname></persName><affiliation>Department of Earth Sciences, University of Gothenburg, Göteborg, Sweden</affiliation></author><author xml:id="author-3"><persName><forename type="first">Bruno</forename><surname>Lansard</surname></persName><affiliation>Center for Research in Isotopic Geochemistry and Geochronoloy (GEOTOP) and Department of Earth and Planetary Sciences, McGill University, Montreal, Quebec, Canada</affiliation></author><author xml:id="author-4"><persName><forename type="first">Lisa A.</forename><surname>Miller</surname></persName><affiliation>Institute of Ocean Sciences, Fisheries and Oceans Canada, Sidney, British Columbia, Canada</affiliation></author><author xml:id="author-5"><persName><forename type="first">Alfonso</forename><surname>Mucci</surname></persName><affiliation>Center for Research in Isotopic Geochemistry and Geochronoloy (GEOTOP) and Department of Earth and Planetary Sciences, McGill University, Montreal, Quebec, Canada</affiliation></author><author xml:id="author-6"><persName><forename type="first">Elizabeth</forename><surname>Shadwick</surname></persName><affiliation>Department of Oceanography, Dalhousie University, Halifax, Nova Scotia, Canada</affiliation><affiliation>Now at Antarctic Climate and Ecosystems Cooperative Research Centre, University of Tasmania, Hobart, Tasmania, Australia</affiliation></author><author xml:id="author-7"><persName><forename type="first">Helmuth</forename><surname>Thomas</surname></persName><affiliation>Department of Oceanography, Dalhousie University, Halifax, Nova Scotia, Canada</affiliation></author><author xml:id="author-8"><persName><forename type="first">J.‐E.</forename><surname>Tremblay</surname></persName><affiliation>Department of Biology, Laval University, Quebec, Ontario, Canada</affiliation></author><author xml:id="author-9"><persName><forename type="first">Tim N.</forename><surname>Papakyriakou</surname></persName><affiliation>Center for Earth Observation Science, University of Manitoba, Winnipeg, Manitoba, Canada</affiliation></author></analytic><monogr><title level="j">Journal of Geophysical Research: Oceans</title><title level="j" type="abbrev">J. Geophys. Res.</title><idno type="pISSN">0148-0227</idno><idno type="eISSN">2156-2202</idno><idno type="DOI">10.1002/(ISSN)2156-2202c</idno><imprint><publisher>Blackwell Publishing Ltd</publisher><date type="published" when="2011-09"></date><biblScope unit="volume">116</biblScope><biblScope unit="issue">C9</biblScope><biblScope unit="page" from="/">n/a</biblScope><biblScope unit="page" to="/">n/a</biblScope></imprint></monogr><idno type="istex">F96D249D1212E6BCCC9C82123741664DCE40DAAF</idno><idno type="DOI">10.1029/2011JC007184</idno><idno type="ArticleID">2011JC007184</idno></biblStruct></sourceDesc></fileDesc><profileDesc><creation><date>2011</date></creation><langUsage><language ident="en">en</language></langUsage><abstract><p>We report on measurements across an annual cycle of carbon dioxide system parameters in the polar mixed layer (PML) of the circumpolar flaw lead in the Amundsen Gulf, Arctic Ocean. From these and other properties (nitrate, S, T) of the PML, we found that biological processes (photosynthesis and respiration) accounted for about 50% of the monthly variations in the carbonate ion concentration, [CO32−] and Ω, the saturation state of these waters with respect to calcite (ΩCa) and aragonite (ΩAr). Vertical mixing and salinity changes had equal impacts over the annual cycle. The impact of sea ice meltwater resulted in decreasing Ω values in summer, but most of this change was offset by the Ω increase as a result of CO2 drawdown during biological photosynthesis.</p></abstract><abstract style="short"><p>Biological processes dominate the seasonal variability in CaCO 3 saturation state Unique data set with full annual cycle of biogeochemical data Aragonite undersaturation due to physical upwelling</p></abstract><textClass><keywords scheme="keyword"><list><head>keywords</head><item><term>ocean acidification</term></item><item><term>pH</term></item><item><term>polynyas</term></item><item><term>sea ice melt</term></item><item><term>seasonal variability</term></item><item><term>total alkalinity</term></item></list></keywords></textClass><textClass><keywords scheme="Journal Subject"><list><head>index-terms</head><item><term>The IPY Circumpolar Flaw Lead and Arctic SOLAS Experiments: Oceanography, Geophysics, and Biogeochemistry of the Amundsen Gulf and Southern Beaufort Sea During a Year of Unprecedented Sea Ice Minima</term></item><item><term>BIOGEOSCIENCES</term></item><item><term>Diel, seasonal, and annual cycles</term></item><item><term>Biogeochemical kinetics and reaction modeling</term></item><item><term>Biogeochemical cycles, processes, and modeling</term></item><item><term>Carbon cycling</term></item><item><term>CRYOSPHERE</term></item><item><term>Biogeochemistry</term></item><item><term>GLOBAL CHANGE</term></item><item><term>Biogeochemical cycles, processes, and modeling</term></item><item><term>OCEANOGRAPHY: GENERAL</term></item><item><term>Arctic and Antarctic oceanography</term></item><item><term>Diurnal, seasonal, and annual cycles</term></item><item><term>OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL</term></item><item><term>Biogeochemical cycles, processes, and modeling</term></item><item><term>Carbon cycling</term></item><item><term>PALEOCEANOGRAPHY</term></item><item><term>Biogeochemical cycles, processes, and modeling</term></item><item><term>GEOGRAPHIC LOCATION</term></item><item><term>Antarctica</term></item><item><term>Arctic region</term></item></list></keywords></textClass></profileDesc><revisionDesc><change when="2011-03-31">Received</change><change when="2011-10-16">Registration</change><change when="2011-09">Published</change></revisionDesc></teiHeader></istex:fulltextTEI><json:item><extension>txt</extension><original>false</original><mimetype>text/plain</mimetype><uri>https://api-v5.istex.fr/document/F96D249D1212E6BCCC9C82123741664DCE40DAAF/fulltext/txt</uri></json:item></fulltext><metadata><istex:metadataXml wicri:clean="Wiley, elements deleted: body"><istex:xmlDeclaration>version="1.0" encoding="UTF-8" standalone="yes"</istex:xmlDeclaration><istex:document><component type="serialArticle" version="2.0" xml:lang="en" xml:id="jgrc12157"><header><publicationMeta level="product"><doi>10.1002/(ISSN)2156-2202c</doi><issn type="print">0148-0227</issn><issn type="electronic">2156-2202</issn><idGroup><id type="product" value="JGRC"></id><id type="coden" value="JGREA2"></id></idGroup><titleGroup><title type="main" xml:lang="en" sort="JOURNAL OF GEOPHYSICAL RESEARCH: OCEANS">Journal of Geophysical Research: Oceans</title><title type="short">J. Geophys. Res.</title></titleGroup></publicationMeta><publicationMeta level="part" position="90"><doi>10.1002/jgrc.v116.C9</doi><idGroup><id type="focusSection" value="3"></id></idGroup><titleGroup><title type="focusSection" xml:lang="en">Journal of Geophysical Research: Oceans</title></titleGroup><numberingGroup><numbering type="journalVolume" number="116">116</numbering><numbering type="journalIssue">C9</numbering></numberingGroup><coverDate startDate="2011-09">September 2011</coverDate></publicationMeta><publicationMeta level="unit" type="article" position="10" status="forIssue"><doi>10.1029/2011JC007184</doi><idGroup><id type="editorialOffice" value="2011JC007184"></id><id type="society" value="C00G09"></id><id type="unit" value="JGRC12157"></id></idGroup><countGroup><count type="pageTotal" number="12"></count></countGroup><copyright ownership="thirdParty">Copyright 2011 by the American Geophysical Union</copyright><eventGroup><event type="manuscriptReceived" date="2011-03-31"></event><event type="manuscriptRevised" date="2011-09-23"></event><event type="manuscriptAccepted" date="2011-10-16"></event><event type="firstOnline" date="2011-12-30"></event><event type="publishedOnlineFinalForm" date="2011-12-30"></event><event type="xmlConverted" agent="SPi Global Converter:AGUv5.2_TO_WileyML3Gv1.0.3 version:1.3; WileyML 3G Packaging Tool v1.0" date="2013-02-18"></event><event type="xmlConverted" agent="Converter:WILEY_ML3G_TO_WILEY_ML3GV2 version:4.0.1" date="2014-03-20"></event><event type="xmlConverted" agent="Converter:WML3G_To_WML3G version:4.1.7 mode:FullText,remove_FC" date="2014-10-30"></event></eventGroup><numberingGroup><numbering type="pageFirst">n/a</numbering><numbering type="pageLast">n/a</numbering></numberingGroup><subjectInfo><subject href="http://psi.agu.org/specialSection/IPYCFLEXP1">The IPY Circumpolar Flaw Lead and Arctic SOLAS Experiments: Oceanography, Geophysics, and Biogeochemistry of the Amundsen Gulf and Southern Beaufort Sea During a Year of Unprecedented Sea Ice Minima</subject><subject role="crossTerm" href="http://psi.agu.org/taxonomy5/0400">BIOGEOSCIENCES</subject><subjectInfo><subject role="crossTerm" href="http://psi.agu.org/taxonomy5/0438">Diel, seasonal, and annual cycles</subject><subject role="crossTerm" href="http://psi.agu.org/taxonomy5/0412">Biogeochemical kinetics and reaction modeling</subject><subject role="crossTerm" href="http://psi.agu.org/taxonomy5/0414">Biogeochemical cycles, processes, and modeling</subject><subject role="crossTerm" href="http://psi.agu.org/taxonomy5/0428">Carbon cycling</subject></subjectInfo><subject role="crossTerm" href="http://psi.agu.org/taxonomy5/0700">CRYOSPHERE</subject><subjectInfo><subject role="crossTerm" href="http://psi.agu.org/taxonomy5/0793">Biogeochemistry</subject></subjectInfo><subject role="crossTerm" href="http://psi.agu.org/taxonomy5/1600">GLOBAL CHANGE</subject><subjectInfo><subject role="crossTerm" href="http://psi.agu.org/taxonomy5/1615">Biogeochemical cycles, processes, and modeling</subject></subjectInfo><subject href="http://psi.agu.org/taxonomy5/4200">OCEANOGRAPHY: GENERAL</subject><subjectInfo><subject href="http://psi.agu.org/taxonomy5/4207">Arctic and Antarctic oceanography</subject><subject href="http://psi.agu.org/taxonomy5/4227">Diurnal, seasonal, and annual cycles</subject></subjectInfo><subject href="http://psi.agu.org/taxonomy5/4800">OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL</subject><subjectInfo><subject href="http://psi.agu.org/taxonomy5/4805">Biogeochemical cycles, processes, and modeling</subject><subject href="http://psi.agu.org/taxonomy5/4806">Carbon cycling</subject></subjectInfo><subject role="crossTerm" href="http://psi.agu.org/taxonomy5/4900">PALEOCEANOGRAPHY</subject><subjectInfo><subject role="crossTerm" href="http://psi.agu.org/taxonomy5/4912">Biogeochemical cycles, processes, and modeling</subject></subjectInfo><subject role="crossTerm" href="http://psi.agu.org/taxonomy5/9300">GEOGRAPHIC LOCATION</subject><subjectInfo><subject role="crossTerm" href="http://psi.agu.org/taxonomy5/9310">Antarctica</subject><subject role="crossTerm" href="http://psi.agu.org/taxonomy5/9315">Arctic region</subject></subjectInfo></subjectInfo><selfCitationGroup><citation xml:id="jgrc12157-cit-0000" type="self"><author><familyName>Chierici</familyName>, <givenNames>M.</givenNames></author>, <author><givenNames>A.</givenNames> <familyName>Fransson</familyName></author>, <author><givenNames>B.</givenNames> <familyName>Lansard</familyName></author>, <author><givenNames>L. A.</givenNames> <familyName>Miller</familyName></author>, <author><givenNames>A.</givenNames> <familyName>Mucci</familyName></author>, <author><givenNames>E.</givenNames> <familyName>Shadwick</familyName></author>, <author><givenNames>H.</givenNames> <familyName>Thomas</familyName></author>, <author><givenNames>J.‐E.</givenNames> <familyName>Tremblay</familyName></author>, and <author><givenNames>T. N.</givenNames> <familyName>Papakyriakou</familyName></author> (<pubYear year="2011">2011</pubYear>), <articleTitle>Impact of biogeochemical processes and environmental factors on the calcium carbonate saturation state in the Circumpolar Flaw Lead in the Amundsen Gulf, Arctic Ocean</articleTitle>, <journalTitle>J. Geophys. Res.</journalTitle>, <vol>116</vol>, C00G09, doi:<accessionId ref="info:doi/10.1029/2011JC007184">10.1029/2011JC007184</accessionId>.</citation></selfCitationGroup><linkGroup><link type="toTypesetVersion" href="file:JGRC.JGRC12157.pdf"></link></linkGroup></publicationMeta><contentMeta><countGroup><count type="wordTotal" number="6800"></count><count type="figureTotal" number="8"></count><count type="tableTotal" number="2"></count></countGroup><titleGroup><title type="main">Impact of biogeochemical processes and environmental factors on the calcium carbonate saturation state in the Circumpolar Flaw Lead in the Amundsen Gulf, Arctic Ocean</title><title type="shortAuthors">CHIERICI ET AL.</title><title type="short">CONTROLS ON CaCO<sub>3</sub> IN THE ARCTIC OCEAN</title></titleGroup><creators><creator xml:id="jgrc12157-cr-0001" creatorRole="author" affiliationRef="#jgrc12157-aff-0001 #jgrc12157-aff-0002"><personName><givenNames>Melissa</givenNames><familyName>Chierici</familyName></personName><contactDetails><email>melissa@chem.gu.se</email></contactDetails></creator><creator xml:id="jgrc12157-cr-0002" creatorRole="author" affiliationRef="#jgrc12157-aff-0003"><personName><givenNames>Agneta</givenNames><familyName>Fransson</familyName></personName></creator><creator xml:id="jgrc12157-cr-0003" creatorRole="author" affiliationRef="#jgrc12157-aff-0004"><personName><givenNames>Bruno</givenNames><familyName>Lansard</familyName></personName></creator><creator xml:id="jgrc12157-cr-0004" creatorRole="author" affiliationRef="#jgrc12157-aff-0005"><personName><givenNames>Lisa A.</givenNames><familyName>Miller</familyName></personName></creator><creator xml:id="jgrc12157-cr-0005" creatorRole="author" affiliationRef="#jgrc12157-aff-0004"><personName><givenNames>Alfonso</givenNames><familyName>Mucci</familyName></personName></creator><creator xml:id="jgrc12157-cr-0006" creatorRole="author" affiliationRef="#jgrc12157-aff-0006 #jgrc12157-aff-0007"><personName><givenNames>Elizabeth</givenNames><familyName>Shadwick</familyName></personName></creator><creator xml:id="jgrc12157-cr-0007" creatorRole="author" affiliationRef="#jgrc12157-aff-0006"><personName><givenNames>Helmuth</givenNames><familyName>Thomas</familyName></personName></creator><creator xml:id="jgrc12157-cr-0008" creatorRole="author" affiliationRef="#jgrc12157-aff-0008"><personName><givenNames>J.‐E.</givenNames><familyName>Tremblay</familyName></personName></creator><creator xml:id="jgrc12157-cr-0009" creatorRole="author" affiliationRef="#jgrc12157-aff-0009"><personName><givenNames>Tim N.</givenNames><familyName>Papakyriakou</familyName></personName></creator></creators><affiliationGroup><affiliation xml:id="jgrc12157-aff-0001" countryCode="SE" type="organization"><unparsedAffiliation>Department of Chemistry, University of Gothenburg, Göteborg, Sweden</unparsedAffiliation></affiliation><affiliation xml:id="jgrc12157-aff-0002" countryCode="NO" type="organization"><unparsedAffiliation>Institute of Marine Research, Tromsø, Norway</unparsedAffiliation></affiliation><affiliation xml:id="jgrc12157-aff-0003" countryCode="SE" type="organization"><unparsedAffiliation>Department of Earth Sciences, University of Gothenburg, Göteborg, Sweden</unparsedAffiliation></affiliation><affiliation xml:id="jgrc12157-aff-0004" countryCode="CA" type="organization"><unparsedAffiliation>Center for Research in Isotopic Geochemistry and Geochronoloy (GEOTOP) and Department of Earth and Planetary Sciences, McGill University, Montreal, Quebec, Canada</unparsedAffiliation></affiliation><affiliation xml:id="jgrc12157-aff-0005" countryCode="CA" type="organization"><unparsedAffiliation>Institute of Ocean Sciences, Fisheries and Oceans Canada, Sidney, British Columbia, Canada</unparsedAffiliation></affiliation><affiliation xml:id="jgrc12157-aff-0006" countryCode="CA" type="organization"><unparsedAffiliation>Department of Oceanography, Dalhousie University, Halifax, Nova Scotia, Canada</unparsedAffiliation></affiliation><affiliation xml:id="jgrc12157-aff-0007" countryCode="AU" type="organization"><unparsedAffiliation>Now at Antarctic Climate and Ecosystems Cooperative Research Centre, University of Tasmania, Hobart, Tasmania, Australia</unparsedAffiliation></affiliation><affiliation xml:id="jgrc12157-aff-0008" countryCode="CA" type="organization"><unparsedAffiliation>Department of Biology, Laval University, Quebec, Ontario, Canada</unparsedAffiliation></affiliation><affiliation xml:id="jgrc12157-aff-0009" countryCode="CA" type="organization"><unparsedAffiliation>Center for Earth Observation Science, University of Manitoba, Winnipeg, Manitoba, Canada</unparsedAffiliation></affiliation></affiliationGroup><keywordGroup type="author"><keyword xml:id="jgrc12157-kwd-0001">ocean acidification</keyword><keyword xml:id="jgrc12157-kwd-0002">pH</keyword><keyword xml:id="jgrc12157-kwd-0003">polynyas</keyword><keyword xml:id="jgrc12157-kwd-0004">sea ice melt</keyword><keyword xml:id="jgrc12157-kwd-0005">seasonal variability</keyword><keyword xml:id="jgrc12157-kwd-0006">total alkalinity</keyword></keywordGroup><supportingInformation><supportingInfoItem><mediaResource alt="supplementary data" mimeType="text/plain" href="urn-x:wiley:01480227:media:jgrc12157:jgrc12157-sup-0001-t01"></mediaResource><caption>Tab‐delimited Table 1.</caption></supportingInfoItem><supportingInfoItem><mediaResource alt="supplementary data" mimeType="text/plain" href="urn-x:wiley:01480227:media:jgrc12157:jgrc12157-sup-0002-t02"></mediaResource><caption>Tab‐delimited Table 2.</caption></supportingInfoItem></supportingInformation><abstractGroup><abstract type="main"><p xml:id="jgrc12157-para-0001" label="1">We report on measurements across an annual cycle of carbon dioxide system parameters in the polar mixed layer (PML) of the circumpolar flaw lead in the Amundsen Gulf, Arctic Ocean. From these and other properties (nitrate, S, T) of the PML, we found that biological processes (photosynthesis and respiration) accounted for about 50% of the monthly variations in the carbonate ion concentration, [CO<sub>3</sub><sup>2−</sup>] and Ω, the saturation state of these waters with respect to calcite (Ω<sub>Ca</sub>) and aragonite (Ω<sub>Ar</sub>). Vertical mixing and salinity changes had equal impacts over the annual cycle. The impact of sea ice meltwater resulted in decreasing Ω values in summer, but most of this change was offset by the Ω increase as a result of CO<sub>2</sub> drawdown during biological photosynthesis.</p></abstract><abstract type="short"><title type="main">Key Points</title><p xml:id="jgrc12157-para-0002"><list style="bulleted"><listItem>Biological processes dominate the seasonal variability in CaCO 3 saturation state</listItem><listItem>Unique data set with full annual cycle of biogeochemical data</listItem><listItem>Aragonite undersaturation due to physical upwelling</listItem></list></p></abstract></abstractGroup></contentMeta></header></component></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>Impact of biogeochemical processes and environmental factors on the calcium carbonate saturation state in the Circumpolar Flaw Lead in the Amundsen Gulf, Arctic Ocean</title></titleInfo><titleInfo type="abbreviated" lang="en"><title>CONTROLS ON CaCO3 IN THE ARCTIC OCEAN</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>Impact of biogeochemical processes and environmental factors on the calcium carbonate saturation state in the Circumpolar Flaw Lead in the Amundsen Gulf, Arctic Ocean</title></titleInfo><name type="personal"><namePart type="given">Melissa</namePart><namePart type="family">Chierici</namePart><affiliation>Department of Chemistry, University of Gothenburg, Göteborg, Sweden</affiliation><affiliation>Institute of Marine Research, Tromsø, Norway</affiliation><affiliation>E-mail: melissa@chem.gu.se</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Agneta</namePart><namePart type="family">Fransson</namePart><affiliation>Department of Earth Sciences, University of Gothenburg, Göteborg, Sweden</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Bruno</namePart><namePart type="family">Lansard</namePart><affiliation>Center for Research in Isotopic Geochemistry and Geochronoloy (GEOTOP) and Department of Earth and Planetary Sciences, McGill University, Montreal, Quebec, Canada</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Lisa A.</namePart><namePart type="family">Miller</namePart><affiliation>Institute of Ocean Sciences, Fisheries and Oceans Canada, Sidney, British Columbia, Canada</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Alfonso</namePart><namePart type="family">Mucci</namePart><affiliation>Center for Research in Isotopic Geochemistry and Geochronoloy (GEOTOP) and Department of Earth and Planetary Sciences, McGill University, Montreal, Quebec, Canada</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Elizabeth</namePart><namePart type="family">Shadwick</namePart><affiliation>Department of Oceanography, Dalhousie University, Halifax, Nova Scotia, Canada</affiliation><affiliation>Now at Antarctic Climate and Ecosystems Cooperative Research Centre, University of Tasmania, Hobart, Tasmania, Australia</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Helmuth</namePart><namePart type="family">Thomas</namePart><affiliation>Department of Oceanography, Dalhousie University, Halifax, Nova Scotia, Canada</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">J.‐E.</namePart><namePart type="family">Tremblay</namePart><affiliation>Department of Biology, Laval University, Quebec, Ontario, Canada</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Tim N.</namePart><namePart type="family">Papakyriakou</namePart><affiliation>Center for Earth Observation Science, University of Manitoba, Winnipeg, Manitoba, Canada</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="article" displayLabel="article"></genre><originInfo><publisher>Blackwell Publishing Ltd</publisher><dateIssued encoding="w3cdtf">2011-09</dateIssued><dateCaptured encoding="w3cdtf">2011-03-31</dateCaptured><dateValid encoding="w3cdtf">2011-10-16</dateValid><edition>Chierici, M., A. Fransson, B. Lansard, L. A. Miller, A. Mucci, E. Shadwick, H. Thomas, J.‐E. Tremblay, and T. N. Papakyriakou (2011), Impact of biogeochemical processes and environmental factors on the calcium carbonate saturation state in the Circumpolar Flaw Lead in the Amundsen Gulf, Arctic Ocean, J. Geophys. Res., 116, C00G09, doi:10.1029/2011JC007184.</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="figures">8</extent><extent unit="tables">2</extent><extent unit="words">6800</extent></physicalDescription><abstract>We report on measurements across an annual cycle of carbon dioxide system parameters in the polar mixed layer (PML) of the circumpolar flaw lead in the Amundsen Gulf, Arctic Ocean. From these and other properties (nitrate, S, T) of the PML, we found that biological processes (photosynthesis and respiration) accounted for about 50% of the monthly variations in the carbonate ion concentration, [CO32−] and Ω, the saturation state of these waters with respect to calcite (ΩCa) and aragonite (ΩAr). Vertical mixing and salinity changes had equal impacts over the annual cycle. The impact of sea ice meltwater resulted in decreasing Ω values in summer, but most of this change was offset by the Ω increase as a result of CO2 drawdown during biological photosynthesis.</abstract><abstract type="short">Biological processes dominate the seasonal variability in CaCO 3 saturation state Unique data set with full annual cycle of biogeochemical data Aragonite undersaturation due to physical upwelling</abstract><note type="additional physical form">Tab‐delimited Table 1.Tab‐delimited Table 2.</note><subject><genre>keywords</genre><topic>ocean acidification</topic><topic>pH</topic><topic>polynyas</topic><topic>sea ice melt</topic><topic>seasonal variability</topic><topic>total alkalinity</topic></subject><relatedItem type="host"><titleInfo><title>Journal of Geophysical Research: Oceans</title></titleInfo><titleInfo type="abbreviated"><title>J. Geophys. Res.</title></titleInfo><genre type="journal">journal</genre><subject><genre>index-terms</genre><topic authorityURI="http://psi.agu.org/specialSection/IPYCFLEXP1">The IPY Circumpolar Flaw Lead and Arctic SOLAS Experiments: Oceanography, Geophysics, and Biogeochemistry of the Amundsen Gulf and Southern Beaufort Sea During a Year of Unprecedented Sea Ice Minima</topic><topic authorityURI="http://psi.agu.org/taxonomy5/0400">BIOGEOSCIENCES</topic><topic authorityURI="http://psi.agu.org/taxonomy5/0438">Diel, seasonal, and annual cycles</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/taxonomy5/0428">Carbon cycling</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/taxonomy5/4200">OCEANOGRAPHY: GENERAL</topic><topic authorityURI="http://psi.agu.org/taxonomy5/4207">Arctic and Antarctic oceanography</topic><topic authorityURI="http://psi.agu.org/taxonomy5/4227">Diurnal, seasonal, and annual cycles</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/taxonomy5/4806">Carbon cycling</topic><topic authorityURI="http://psi.agu.org/taxonomy5/4900">PALEOCEANOGRAPHY</topic><topic authorityURI="http://psi.agu.org/taxonomy5/4912">Biogeochemical cycles, processes, and modeling</topic><topic authorityURI="http://psi.agu.org/taxonomy5/9300">GEOGRAPHIC LOCATION</topic><topic authorityURI="http://psi.agu.org/taxonomy5/9310">Antarctica</topic><topic authorityURI="http://psi.agu.org/taxonomy5/9315">Arctic region</topic></subject><identifier type="ISSN">0148-0227</identifier><identifier type="eISSN">2156-2202</identifier><identifier type="DOI">10.1002/(ISSN)2156-2202c</identifier><identifier type="CODEN">JGREA2</identifier><identifier type="PublisherID">JGRC</identifier><part><date>2011</date><detail type="volume"><caption>vol.</caption><number>116</number></detail><detail type="issue"><caption>no.</caption><number>C9</number></detail><extent unit="pages"><start>n/a</start><end>n/a</end><total>12</total></extent></part></relatedItem><identifier type="istex">F96D249D1212E6BCCC9C82123741664DCE40DAAF</identifier><identifier type="DOI">10.1029/2011JC007184</identifier><identifier type="ArticleID">2011JC007184</identifier><accessCondition type="use and reproduction" contentType="copyright">Copyright 2011 by the American Geophysical Union</accessCondition><recordInfo><recordContentSource>WILEY</recordContentSource></recordInfo></mods></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
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