Seasonality of sporadic physical processes driving temperature and nutrient high‐frequency variability in the coastal ocean off southeast Australia
Identifieur interne : 002623 ( Istex/Corpus ); précédent : 002622; suivant : 002624Seasonality of sporadic physical processes driving temperature and nutrient high‐frequency variability in the coastal ocean off southeast Australia
Auteurs : Vincent Rossi ; Amandine Schaeffer ; Julie Wood ; Guillaume Galibert ; Brad Morris ; Joel Sudre ; Moninya Roughan ; Anya M. WaiteSource :
- Journal of Geophysical Research: Oceans [ 2169-9275 ] ; 2014-01.
Abstract
Physical processes forced by alongshore winds and currents are known to strongly influence the biogeochemistry of coastal waters. Combining in situ observations (moored platforms, hydrographic surveys) and satellite data (sea surface wind and sea surface height), we investigate the transient occurrence of wind‐driven upwelling/downwelling and current‐driven upwelling events off southeast Australia. Remote‐sensed indices are developed and calibrated with multiannual time series of in situ temperature and current measurements at two shelf locations. Based on archives up to 10 years long, climatological analyses of these indices reveal various latitudinal regimes with respect to seasonality, magnitude, duration of events, and their driving mechanisms (wind or current). Generally, downwelling‐favorable winds prevail in this region; however, we demonstrate that up to 10 wind‐driven upwelling days per month occur during spring/summer at 28–33.5°S and up to 5 days in summer further south. Current‐driven upwelling upstream of the East Australian Current separation zone (∼32°S) occurs twice as often as downstream. Using independent in situ data sets, we show that the response of the coastal ocean is consistent with our climatology of shelf processes: upwelling leads to a large range of temperatures and elevated nutrient concentrations on the shelf, maximized in the wind‐driven case, while downwelling results in destratified nutrient‐poor waters. The combination of these sporadic wind‐ and current‐driven processes may drive an important part of the high‐frequency variability of coastal temperature and nutrient content. Our results suggest that localized nutrient enrichment events of variable magnitude are favored at specific latitudes and seasons, potentially impacting coastal ecosystems.
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DOI: 10.1002/2013JC009284
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ISTEX:CCF1997F0766AE5ADF95C756E38DE8D8B414A1BBLe document en format XML
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Waite</name><affiliation><mods:affiliation>The Oceans Institute and School of Environmental Systems Engineering, University of Western Australia, Western Australia, Crawley, Australia</mods:affiliation></affiliation></author></analytic><monogr></monogr><series><title level="j" type="main">Journal of Geophysical Research: Oceans</title><title level="j" type="alt">JOURNAL OF GEOPHYSICAL RESEARCH: OCEANS</title><idno type="ISSN">2169-9275</idno><idno type="eISSN">2169-9291</idno><imprint><biblScope unit="vol">119</biblScope><biblScope unit="issue">1</biblScope><biblScope unit="page" from="445">445</biblScope><biblScope unit="page" to="460">460</biblScope><biblScope unit="page-count">16</biblScope><date type="published" when="2014-01">2014-01</date></imprint><idno type="ISSN">2169-9275</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">2169-9275</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract">Physical processes forced by alongshore winds and currents are known to strongly influence the biogeochemistry of coastal waters. Combining in situ observations (moored platforms, hydrographic surveys) and satellite data (sea surface wind and sea surface height), we investigate the transient occurrence of wind‐driven upwelling/downwelling and current‐driven upwelling events off southeast Australia. Remote‐sensed indices are developed and calibrated with multiannual time series of in situ temperature and current measurements at two shelf locations. Based on archives up to 10 years long, climatological analyses of these indices reveal various latitudinal regimes with respect to seasonality, magnitude, duration of events, and their driving mechanisms (wind or current). Generally, downwelling‐favorable winds prevail in this region; however, we demonstrate that up to 10 wind‐driven upwelling days per month occur during spring/summer at 28–33.5°S and up to 5 days in summer further south. Current‐driven upwelling upstream of the East Australian Current separation zone (∼32°S) occurs twice as often as downstream. Using independent in situ data sets, we show that the response of the coastal ocean is consistent with our climatology of shelf processes: upwelling leads to a large range of temperatures and elevated nutrient concentrations on the shelf, maximized in the wind‐driven case, while downwelling results in destratified nutrient‐poor waters. The combination of these sporadic wind‐ and current‐driven processes may drive an important part of the high‐frequency variability of coastal temperature and nutrient content. Our results suggest that localized nutrient enrichment events of variable magnitude are favored at specific latitudes and seasons, potentially impacting coastal ecosystems.</div></front></TEI><istex><corpusName>wiley</corpusName><author><json:item><name>Vincent Rossi</name><affiliations><json:string>School of Mathematics and Statistics, University of New South Wales, New South Wales, Sydney, Australia</json:string><json:string>E-mail: vincent.rossi.ocean@gmail.com</json:string></affiliations></json:item><json:item><name>Amandine Schaeffer</name><affiliations><json:string>School of Mathematics and Statistics, University of New South Wales, New South Wales, Sydney, Australia</json:string></affiliations></json:item><json:item><name>Julie Wood</name><affiliations><json:string>School of Mathematics and Statistics, University of New South Wales, New South Wales, Sydney, Australia</json:string></affiliations></json:item><json:item><name>Guillaume Galibert</name><affiliations><json:string>IMOS eMarine Information Infrastructure, University of Tasmania, Tasmania, Hobart, Australia</json:string></affiliations></json:item><json:item><name>Brad Morris</name><affiliations><json:string>School of Mathematics and Statistics, University of New South Wales, New South Wales, Sydney, Australia</json:string></affiliations></json:item><json:item><name>Joel Sudre</name><affiliations><json:string>Laboratoire d'Etudes en Géophysique et Océanographie Spatiales, CNRS/UPS/IRD/CNES, Toulouse, France</json:string></affiliations></json:item><json:item><name>Moninya Roughan</name><affiliations><json:string>School of Mathematics and Statistics, University of New South Wales, New South Wales, Sydney, Australia</json:string></affiliations></json:item><json:item><name>Anya M. 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Combining in situ observations (moored platforms, hydrographic surveys) and satellite data (sea surface wind and sea surface height), we investigate the transient occurrence of wind‐driven upwelling/downwelling and current‐driven upwelling events off southeast Australia. Remote‐sensed indices are developed and calibrated with multiannual time series of in situ temperature and current measurements at two shelf locations. Based on archives up to 10 years long, climatological analyses of these indices reveal various latitudinal regimes with respect to seasonality, magnitude, duration of events, and their driving mechanisms (wind or current). Generally, downwelling‐favorable winds prevail in this region; however, we demonstrate that up to 10 wind‐driven upwelling days per month occur during spring/summer at 28–33.5°S and up to 5 days in summer further south. Current‐driven upwelling upstream of the East Australian Current separation zone (∼32°S) occurs twice as often as downstream. Using independent in situ data sets, we show that the response of the coastal ocean is consistent with our climatology of shelf processes: upwelling leads to a large range of temperatures and elevated nutrient concentrations on the shelf, maximized in the wind‐driven case, while downwelling results in destratified nutrient‐poor waters. The combination of these sporadic wind‐ and current‐driven processes may drive an important part of the high‐frequency variability of coastal temperature and nutrient content. Our results suggest that localized nutrient enrichment events of variable magnitude are favored at specific latitudes and seasons, potentially impacting coastal ecosystems.</abstract><qualityIndicators><score>10</score><pdfWordCount>10468</pdfWordCount><pdfCharCount>64530</pdfCharCount><pdfVersion>1.3</pdfVersion><pdfPageCount>16</pdfPageCount><pdfPageSize>609.789 x 825.052 pts</pdfPageSize><refBibsNative>true</refBibsNative><abstractWordCount>250</abstractWordCount><abstractCharCount>1809</abstractCharCount><keywordCount>7</keywordCount></qualityIndicators><title>Seasonality of sporadic physical processes driving temperature and nutrient high‐frequency variability in the coastal ocean off southeast Australia</title><genre><json:string>article</json:string></genre><host><title>Journal of Geophysical Research: Oceans</title><language><json:string>unknown</json:string></language><doi><json:string>10.1002/(ISSN)2169-9291</json:string></doi><issn><json:string>2169-9275</json:string></issn><eissn><json:string>2169-9291</json:string></eissn><publisherId><json:string>JGRC</json:string></publisherId><volume>119</volume><issue>1</issue><pages><first>445</first><last>460</last><total>16</total></pages><genre><json:string>journal</json:string></genre><subject><json:item><value>Oceanography: General</value></json:item><json:item><value>Continental shelf and slope processes</value></json:item><json:item><value>Upwelling and convergences</value></json:item><json:item><value>Ocean observing systems</value></json:item><json:item><value>Physical and biogeochemical interactions</value></json:item><json:item><value>Marine Geology and Geophysics</value></json:item><json:item><value>Continental shelf and slope processes</value></json:item><json:item><value>Paleoceanography</value></json:item><json:item><value>Upwelling</value></json:item><json:item><value>Oceanography: Biological and Chemical</value></json:item><json:item><value>Nutrients and nutrient cycling</value></json:item><json:item><value>Biogeosciences</value></json:item><json:item><value>Nutrients and nutrient cycling</value></json:item><json:item><value>Geochemistry</value></json:item><json:item><value>Marine geochemistry</value></json:item><json:item><value>Research Article</value></json:item></subject></host><ark><json:string>ark:/67375/WNG-HSL89W32-W</json:string></ark><publicationDate>2014</publicationDate><copyrightDate>2014</copyrightDate><doi><json:string>10.1002/2013JC009284</json:string></doi><id>CCF1997F0766AE5ADF95C756E38DE8D8B414A1BB</id><score>1</score><fulltext><json:item><extension>pdf</extension><original>true</original><mimetype>application/pdf</mimetype><uri>https://api.istex.fr/document/CCF1997F0766AE5ADF95C756E38DE8D8B414A1BB/fulltext/pdf</uri></json:item><json:item><extension>zip</extension><original>false</original><mimetype>application/zip</mimetype><uri>https://api.istex.fr/document/CCF1997F0766AE5ADF95C756E38DE8D8B414A1BB/fulltext/zip</uri></json:item><istex:fulltextTEI uri="https://api.istex.fr/document/CCF1997F0766AE5ADF95C756E38DE8D8B414A1BB/fulltext/tei"><teiHeader><fileDesc><titleStmt><title level="a" type="main">Seasonality of sporadic physical processes driving temperature and nutrient high‐frequency variability in the coastal ocean off southeast Australia</title></titleStmt><publicationStmt><authority>ISTEX</authority><publisher>Wiley Publishing Ltd</publisher><availability><licence>©2013. American Geophysical Union. All Rights Reserved.</licence></availability><date type="published" when="2014-01"></date></publicationStmt><notesStmt><note type="content-type" subtype="article" source="article" scheme="https://content-type.data.istex.fr/ark:/67375/XTP-6N5SZHKN-D">article</note><note type="publication-type" subtype="journal" scheme="https://publication-type.data.istex.fr/ark:/67375/JMC-0GLKJH51-B">journal</note></notesStmt><sourceDesc><biblStruct type="article"><analytic><title level="a" type="main">Seasonality of sporadic physical processes driving temperature and nutrient high‐frequency variability in the coastal ocean off southeast Australia</title><title level="a" type="short">Multisensor Analysis of Shelf Processes</title><author xml:id="author-0000" role="corresp"><persName><forename type="first">Vincent</forename><surname>Rossi</surname></persName><affiliation><orgName>School of Mathematics and Statistics</orgName><orgName>University of New South Wales</orgName><address><settlement type="city">Sydney</settlement><region>New South Wales</region><country key="AU">Australia</country></address></affiliation><affiliation>Corresponding author: V. Rossi, School of Mathematics and Statistics, University of New South Wales, Sydney, NSW 2052, Australia. (vincent.rossi.ocean@gmail.com)</affiliation></author><author xml:id="author-0001"><persName><forename type="first">Amandine</forename><surname>Schaeffer</surname></persName><affiliation><orgName>School of Mathematics and Statistics</orgName><orgName>University of New South Wales</orgName><address><settlement type="city">Sydney</settlement><region>New South Wales</region><country key="AU">Australia</country></address></affiliation></author><author xml:id="author-0002"><persName><forename type="first">Julie</forename><surname>Wood</surname></persName><affiliation><orgName>School of Mathematics and Statistics</orgName><orgName>University of New South Wales</orgName><address><settlement type="city">Sydney</settlement><region>New South Wales</region><country key="AU">Australia</country></address></affiliation></author><author xml:id="author-0003"><persName><forename type="first">Guillaume</forename><surname>Galibert</surname></persName><affiliation><orgName>IMOS eMarine Information Infrastructure, University of Tasmania</orgName><address><settlement type="city">Hobart</settlement><region>Tasmania</region><country key="AU">Australia</country></address></affiliation></author><author xml:id="author-0004"><persName><forename type="first">Brad</forename><surname>Morris</surname></persName><affiliation><orgName>School of Mathematics and Statistics</orgName><orgName>University of New South Wales</orgName><address><settlement type="city">Sydney</settlement><region>New South Wales</region><country key="AU">Australia</country></address></affiliation></author><author xml:id="author-0005"><persName><forename type="first">Joel</forename><surname>Sudre</surname></persName><affiliation><orgName>Laboratoire d'Etudes en Géophysique et Océanographie Spatiales</orgName><orgName>CNRS/UPS/IRD/CNES</orgName><address><settlement type="city">Toulouse</settlement><country key="FR">France</country></address></affiliation></author><author xml:id="author-0006"><persName><forename type="first">Moninya</forename><surname>Roughan</surname></persName><affiliation><orgName>School of Mathematics and Statistics</orgName><orgName>University of New South Wales</orgName><address><settlement type="city">Sydney</settlement><region>New South Wales</region><country key="AU">Australia</country></address></affiliation></author><author xml:id="author-0007"><persName><forename type="first">Anya M.</forename><surname>Waite</surname></persName><affiliation><orgName>The Oceans Institute and School of Environmental Systems Engineering, University of Western Australia</orgName><address><settlement type="city">Crawley</settlement><region>Western Australia</region><country key="AU">Australia</country></address></affiliation></author><idno type="istex">CCF1997F0766AE5ADF95C756E38DE8D8B414A1BB</idno><idno type="ark">ark:/67375/WNG-HSL89W32-W</idno><idno type="DOI">10.1002/2013JC009284</idno><idno type="unit">JGRC20536</idno><idno type="toTypesetVersion">file:JGRC.JGRC20536.pdf</idno></analytic><monogr><title level="j" type="main">Journal of Geophysical Research: Oceans</title><title level="j" type="alt">JOURNAL OF GEOPHYSICAL RESEARCH: OCEANS</title><idno type="pISSN">2169-9275</idno><idno type="eISSN">2169-9291</idno><idno type="book-DOI">10.1002/(ISSN)2169-9291</idno><idno type="book-part-DOI">10.1002/jgrc.v119.1</idno><idno type="product">JGRC</idno><imprint><biblScope unit="vol">119</biblScope><biblScope unit="issue">1</biblScope><biblScope unit="page" from="445">445</biblScope><biblScope unit="page" to="460">460</biblScope><biblScope unit="page-count">16</biblScope><date type="published" when="2014-01"></date></imprint></monogr></biblStruct></sourceDesc></fileDesc><profileDesc><abstract style="main"><p>Physical processes forced by alongshore winds and currents are known to strongly influence the biogeochemistry of coastal waters. Combining in situ observations (moored platforms, hydrographic surveys) and satellite data (sea surface wind and sea surface height), we investigate the transient occurrence of wind‐driven upwelling/downwelling and current‐driven upwelling events off southeast Australia. Remote‐sensed indices are developed and calibrated with multiannual time series of in situ temperature and current measurements at two shelf locations. Based on archives up to 10 years long, climatological analyses of these indices reveal various latitudinal regimes with respect to seasonality, magnitude, duration of events, and their driving mechanisms (wind or current). Generally, downwelling‐favorable winds prevail in this region; however, we demonstrate that up to 10 wind‐driven upwelling days per month occur during spring/summer at 28–33.5°S and up to 5 days in summer further south. Current‐driven upwelling upstream of the East Australian Current separation zone (∼32°S) occurs twice as often as downstream. Using independent in situ data sets, we show that the response of the coastal ocean is consistent with our climatology of shelf processes: upwelling leads to a large range of temperatures and elevated nutrient concentrations on the shelf, maximized in the wind‐driven case, while downwelling results in destratified nutrient‐poor waters. The combination of these sporadic wind‐ and current‐driven processes may drive an important part of the high‐frequency variability of coastal temperature and nutrient content. Our results suggest that localized nutrient enrichment events of variable magnitude are favored at specific latitudes and seasons, potentially impacting coastal ecosystems.</p></abstract><abstract style="short"><head>Key Points</head><p><list style="bulleted"><item>Multisensor analysis of shelf processes combining in situ and satellite data</item><item>Spatio‐temporal variability of transient wind and current‐driven up/downwelling</item><item>Cold/nutrient‐rich water intrusions favoured at specific locations/seasons</item></list></p></abstract><textClass><keywords><term xml:id="jgrc20536-kwd-0001">continental shelf oceanography</term><term xml:id="jgrc20536-kwd-0002">remote‐sensing</term><term xml:id="jgrc20536-kwd-0003">multisensor</term><term xml:id="jgrc20536-kwd-0004">wind‐driven upwelling/downwelling</term><term xml:id="jgrc20536-kwd-0005">current‐driven upwelling</term><term xml:id="jgrc20536-kwd-0006">East Australian Current</term><term xml:id="jgrc20536-kwd-0007">Western Boundary Current</term></keywords><classCode scheme="http://psi.agu.org/taxonomy5/4200">Oceanography: General</classCode><classCode scheme="http://psi.agu.org/taxonomy5/3000">Marine Geology and Geophysics</classCode><classCode scheme="http://psi.agu.org/taxonomy5/4900">Paleoceanography</classCode><classCode scheme="http://psi.agu.org/taxonomy5/4800">Oceanography: Biological and Chemical</classCode><classCode scheme="http://psi.agu.org/taxonomy5/0400">Biogeosciences</classCode><classCode scheme="http://psi.agu.org/taxonomy5/1000">Geochemistry</classCode><keywords rend="articleCategory"><term>Research Article</term></keywords><keywords rend="tocHeading1"><term>Research Articles</term></keywords></textClass><langUsage><language ident="en"></language></langUsage></profileDesc></teiHeader></istex:fulltextTEI></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 version="2.0" type="serialArticle" xml:lang="en" xml:id="jgrc20536"><header><publicationMeta level="product"><doi origin="wiley" registered="yes">10.1002/(ISSN)2169-9291</doi><issn type="print">2169-9275</issn><issn type="electronic">2169-9291</issn><idGroup><id type="product" value="JGRC"></id></idGroup><titleGroup><title type="main" sort="JOURNAL OF GEOPHYSICAL RESEARCH: OCEANS">Journal of Geophysical Research: Oceans</title><title type="short">J. Geophys. Res. Oceans</title></titleGroup></publicationMeta><publicationMeta level="part" position="10"><doi>10.1002/jgrc.v119.1</doi><copyright ownership="thirdParty">©2013. American Geophysical Union. All Rights Reserved.</copyright><numberingGroup><numbering type="journalVolume" number="119">119</numbering><numbering type="journalIssue">1</numbering></numberingGroup><coverDate startDate="2014-01">January 2014</coverDate></publicationMeta><publicationMeta level="unit" position="330" type="article" status="forIssue"><doi>10.1002/2013JC009284</doi><idGroup><id type="unit" value="JGRC20536"></id></idGroup><countGroup><count type="pageTotal" number="16"></count></countGroup><titleGroup><title type="articleCategory">Research Article</title><title type="tocHeading1">Research Articles</title></titleGroup><copyright ownership="thirdParty">©2013. American Geophysical Union. All Rights Reserved.</copyright><eventGroup><event type="manuscriptReceived" date="2013-07-16"></event><event type="manuscriptRevised" date="2013-12-19"></event><event type="manuscriptAccepted" date="2013-12-22"></event><event type="xmlCreated" agent="Cenveo Publisher Services" date="2014-01-02"></event><event type="xmlConverted" agent="Converter:WILEY_ML3G_TO_WILEY_ML3GV2 version:3.3.4 mode:FullText" date="2014-09-02"></event><event type="publishedOnlineAccepted" date="2013-12-31"></event><event type="publishedOnlineEarlyUnpaginated" date="2014-01-21"></event><event type="publishedOnlineFinalForm" date="2014-02-26"></event><event type="firstOnline" date="2014-01-21"></event><event type="xmlConverted" agent="Converter:WML3G_To_WML3G version:4.7.5 mode:FullText" date="2016-01-29"></event></eventGroup><numberingGroup><numbering type="pageFirst">445</numbering><numbering type="pageLast">460</numbering></numberingGroup><correspondenceTo>Corresponding author: V. Rossi, School of Mathematics and Statistics, University of New South Wales, Sydney, NSW 2052, Australia. (<email>vincent.rossi.ocean@gmail.com</email>)</correspondenceTo><subjectInfo><subject href="http://psi.agu.org/taxonomy5/4200">Oceanography: General</subject><subjectInfo><subject href="http://psi.agu.org/taxonomy5/4219">Continental shelf and slope processes</subject><subject href="http://psi.agu.org/taxonomy5/4279">Upwelling and convergences</subject><subject href="http://psi.agu.org/taxonomy5/4262">Ocean observing systems</subject><subject href="http://psi.agu.org/taxonomy5/4273">Physical and biogeochemical interactions</subject></subjectInfo><subject role="crossTerm" href="http://psi.agu.org/taxonomy5/3000">Marine Geology and Geophysics</subject><subjectInfo><subject role="crossTerm" href="http://psi.agu.org/taxonomy5/3002">Continental shelf and slope processes</subject></subjectInfo><subject role="crossTerm" href="http://psi.agu.org/taxonomy5/4900">Paleoceanography</subject><subjectInfo><subject role="crossTerm" href="http://psi.agu.org/taxonomy5/4964">Upwelling</subject></subjectInfo><subject href="http://psi.agu.org/taxonomy5/4800">Oceanography: Biological and Chemical</subject><subjectInfo><subject href="http://psi.agu.org/taxonomy5/4845">Nutrients and nutrient cycling</subject></subjectInfo><subject role="crossTerm" href="http://psi.agu.org/taxonomy5/0400">Biogeosciences</subject><subjectInfo><subject role="crossTerm" href="http://psi.agu.org/taxonomy5/0470">Nutrients and nutrient cycling</subject></subjectInfo><subject role="crossTerm" href="http://psi.agu.org/taxonomy5/1000">Geochemistry</subject><subjectInfo><subject role="crossTerm" href="http://psi.agu.org/taxonomy5/1050">Marine geochemistry</subject></subjectInfo></subjectInfo><selfCitationGroup><citation xml:id="jgrc20536-cit-0049" type="self"><author><familyName>Rossi</familyName>, <givenNames>V.</givenNames></author>,
<author><givenNames>A.</givenNames> <familyName>Schaeffer</familyName></author>,
<author><givenNames>J.</givenNames> <familyName>Wood</familyName></author>,
<author><givenNames>G.</givenNames> <familyName>Galibert</familyName></author>,
<author><givenNames>B.</givenNames> <familyName>Morris</familyName></author>,
<author><givenNames>J.</givenNames> <familyName>Sudre</familyName></author>,
<author><givenNames>M.</givenNames> <familyName>Roughan</familyName></author>, and
<author><givenNames>A. M.</givenNames> <familyName>Waite</familyName></author> (<pubYear year="2014">2014</pubYear>), <articleTitle>Seasonality of sporadic physical processes driving temperature and nutrient high‐frequency variability in the coastal ocean off southeast Australia</articleTitle>, <journalTitle>J. Geophys. Res. Oceans</journalTitle>, <vol>119</vol>, <pageFirst>445</pageFirst>–<pageLast>460</pageLast>, doi:<accessionId ref="info:doi/10.1002/2013JC009284">10.1002/2013JC009284</accessionId>.
</citation></selfCitationGroup><linkGroup><link type="toTypesetVersion" href="file:JGRC.JGRC20536.pdf"></link></linkGroup></publicationMeta><contentMeta><titleGroup><title type="main">Seasonality of sporadic physical processes driving temperature and nutrient high‐frequency variability in the coastal ocean off southeast Australia</title><title type="short">Multisensor Analysis of Shelf Processes</title><title type="shortAuthors">Rossi et al.</title></titleGroup><creators><creator affiliationRef="#jgrc20536-aff-0001" corresponding="yes" creatorRole="author" xml:id="jgrc20536-cr-0001"><personName><givenNames>Vincent</givenNames><familyName>Rossi</familyName></personName></creator><creator affiliationRef="#jgrc20536-aff-0001" creatorRole="author" xml:id="jgrc20536-cr-0002"><personName><givenNames>Amandine</givenNames><familyName>Schaeffer</familyName></personName></creator><creator affiliationRef="#jgrc20536-aff-0001" creatorRole="author" xml:id="jgrc20536-cr-0003"><personName><givenNames>Julie</givenNames><familyName>Wood</familyName></personName></creator><creator affiliationRef="#jgrc20536-aff-0002" creatorRole="author" xml:id="jgrc20536-cr-0004"><personName><givenNames>Guillaume</givenNames><familyName>Galibert</familyName></personName></creator><creator affiliationRef="#jgrc20536-aff-0001" creatorRole="author" xml:id="jgrc20536-cr-0005"><personName><givenNames>Brad</givenNames><familyName>Morris</familyName></personName></creator><creator affiliationRef="#jgrc20536-aff-0003" creatorRole="author" xml:id="jgrc20536-cr-0006"><personName><givenNames>Joel</givenNames><familyName>Sudre</familyName></personName></creator><creator affiliationRef="#jgrc20536-aff-0001" creatorRole="author" xml:id="jgrc20536-cr-0007"><personName><givenNames>Moninya</givenNames><familyName>Roughan</familyName></personName></creator><creator affiliationRef="#jgrc20536-aff-0004" creatorRole="author" xml:id="jgrc20536-cr-0008"><personName><givenNames>Anya M.</givenNames><familyName>Waite</familyName></personName></creator></creators><affiliationGroup><affiliation countryCode="AU" type="organization" xml:id="jgrc20536-aff-0001"><orgDiv>School of Mathematics and Statistics</orgDiv><orgName>University of New South Wales</orgName><address><city>Sydney</city><countryPart>New South Wales</countryPart><country>Australia</country></address></affiliation><affiliation countryCode="AU" type="organization" xml:id="jgrc20536-aff-0002"><orgName>IMOS eMarine Information Infrastructure, University of Tasmania</orgName><address><city>Hobart</city><countryPart>Tasmania</countryPart><country>Australia</country></address></affiliation><affiliation countryCode="FR" type="organization" xml:id="jgrc20536-aff-0003"><orgDiv>Laboratoire d'Etudes en Géophysique et Océanographie Spatiales</orgDiv><orgName>CNRS/UPS/IRD/CNES</orgName><address><city>Toulouse</city><country>France</country></address></affiliation><affiliation countryCode="AU" type="organization" xml:id="jgrc20536-aff-0004"><orgName>The Oceans Institute and School of Environmental Systems Engineering, University of Western Australia</orgName><address><city>Crawley</city><countryPart>Western Australia</countryPart><country>Australia</country></address></affiliation></affiliationGroup><keywordGroup type="author"><keyword xml:id="jgrc20536-kwd-0001">continental shelf oceanography</keyword><keyword xml:id="jgrc20536-kwd-0002">remote‐sensing</keyword><keyword xml:id="jgrc20536-kwd-0003">multisensor</keyword><keyword xml:id="jgrc20536-kwd-0004">wind‐driven upwelling/downwelling</keyword><keyword xml:id="jgrc20536-kwd-0005">current‐driven upwelling</keyword><keyword xml:id="jgrc20536-kwd-0006">East Australian Current</keyword><keyword xml:id="jgrc20536-kwd-0007">Western Boundary Current</keyword></keywordGroup><supportingInformation><p>Additional supporting information may be found in the online version of this article.</p><supportingInfoItem><mediaResource alt="application" href="urn-x:wiley:21699275:media:jgrc20536:jgrc20536-sup-0001-suppinfofs01"></mediaResource><caption>Supporting Information</caption></supportingInfoItem><supportingInfoItem><mediaResource alt="application" href="urn-x:wiley:21699275:media:jgrc20536:jgrc20536-sup-0002-suppinfofs02"></mediaResource><caption>Supporting Information</caption></supportingInfoItem><supportingInfoItem><mediaResource alt="application" href="urn-x:wiley:21699275:media:jgrc20536:jgrc20536-sup-0003-suppinfofs03"></mediaResource><caption>Supporting Information</caption></supportingInfoItem><supportingInfoItem><mediaResource alt="application" href="urn-x:wiley:21699275:media:jgrc20536:jgrc20536-sup-0004-suppinfofs04"></mediaResource><caption>Supporting Information</caption></supportingInfoItem><supportingInfoItem><mediaResource alt="application" href="urn-x:wiley:21699275:media:jgrc20536:jgrc20536-sup-0005-suppinfofs05"></mediaResource><caption>Supporting Information</caption></supportingInfoItem><supportingInfoItem><mediaResource alt="application" href="urn-x:wiley:21699275:media:jgrc20536:jgrc20536-sup-0006-suppinfotext01"></mediaResource><caption>Supporting Information</caption></supportingInfoItem></supportingInformation><abstractGroup><abstract type="main"><p label="1">Physical processes forced by alongshore winds and currents are known to strongly influence the biogeochemistry of coastal waters. Combining in situ observations (moored platforms, hydrographic surveys) and satellite data (sea surface wind and sea surface height), we investigate the transient occurrence of wind‐driven upwelling/downwelling and current‐driven upwelling events off southeast Australia. Remote‐sensed indices are developed and calibrated with multiannual time series of in situ temperature and current measurements at two shelf locations. Based on archives up to 10 years long, climatological analyses of these indices reveal various latitudinal regimes with respect to seasonality, magnitude, duration of events, and their driving mechanisms (wind or current). Generally, downwelling‐favorable winds prevail in this region; however, we demonstrate that up to 10 wind‐driven upwelling days per month occur during spring/summer at 28–33.5°S and up to 5 days in summer further south. Current‐driven upwelling upstream of the East Australian Current separation zone (∼32°S) occurs twice as often as downstream. Using independent in situ data sets, we show that the response of the coastal ocean is consistent with our climatology of shelf processes: upwelling leads to a large range of temperatures and elevated nutrient concentrations on the shelf, maximized in the wind‐driven case, while downwelling results in destratified nutrient‐poor waters. The combination of these sporadic wind‐ and current‐driven processes may drive an important part of the high‐frequency variability of coastal temperature and nutrient content. Our results suggest that localized nutrient enrichment events of variable magnitude are favored at specific latitudes and seasons, potentially impacting coastal ecosystems.</p></abstract><abstract type="short"><title type="main">Key Points</title><p><list style="bulleted"><listItem>Multisensor analysis of shelf processes combining in situ and satellite data</listItem><listItem>Spatio‐temporal variability of transient wind and current‐driven up/downwelling</listItem><listItem>Cold/nutrient‐rich water intrusions favoured at specific locations/seasons</listItem></list></p></abstract></abstractGroup></contentMeta></header></component></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>Seasonality of sporadic physical processes driving temperature and nutrient high‐frequency variability in the coastal ocean off southeast Australia</title></titleInfo><titleInfo type="abbreviated" lang="en"><title>Multisensor Analysis of Shelf Processes</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>Seasonality of sporadic physical processes driving temperature and nutrient high‐frequency variability in the coastal ocean off southeast Australia</title></titleInfo><name type="personal"><namePart type="given">Vincent</namePart><namePart type="family">Rossi</namePart><affiliation>School of Mathematics and Statistics, University of New South Wales, New South Wales, Sydney, Australia</affiliation><affiliation>E-mail: vincent.rossi.ocean@gmail.com</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Amandine</namePart><namePart type="family">Schaeffer</namePart><affiliation>School of Mathematics and Statistics, University of New South Wales, New South Wales, Sydney, Australia</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Julie</namePart><namePart type="family">Wood</namePart><affiliation>School of Mathematics and Statistics, University of New South Wales, New South Wales, Sydney, Australia</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Guillaume</namePart><namePart type="family">Galibert</namePart><affiliation>IMOS eMarine Information Infrastructure, University of Tasmania, Tasmania, Hobart, Australia</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Brad</namePart><namePart type="family">Morris</namePart><affiliation>School of Mathematics and Statistics, University of New South Wales, New South Wales, Sydney, Australia</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Joel</namePart><namePart type="family">Sudre</namePart><affiliation>Laboratoire d'Etudes en Géophysique et Océanographie Spatiales, CNRS/UPS/IRD/CNES, Toulouse, France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Moninya</namePart><namePart type="family">Roughan</namePart><affiliation>School of Mathematics and Statistics, University of New South Wales, New South Wales, Sydney, Australia</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Anya M.</namePart><namePart type="family">Waite</namePart><affiliation>The Oceans Institute and School of Environmental Systems Engineering, University of Western Australia, Western Australia, Crawley, Australia</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="article" displayLabel="article" authority="ISTEX" authorityURI="https://content-type.data.istex.fr" valueURI="https://content-type.data.istex.fr/ark:/67375/XTP-6N5SZHKN-D">article</genre><originInfo><publisher>Blackwell Publishing Ltd</publisher><dateIssued encoding="w3cdtf">2014-01</dateIssued><dateCreated encoding="w3cdtf">2014-01-02</dateCreated><dateCaptured encoding="w3cdtf">2013-07-16</dateCaptured><dateValid encoding="w3cdtf">2013-12-22</dateValid><edition>Rossi, V., A. Schaeffer, J. Wood, G. Galibert, B. Morris, J. Sudre, M. Roughan, and A. M. Waite (2014), Seasonality of sporadic physical processes driving temperature and nutrient high‐frequency variability in the coastal ocean off southeast Australia, J. Geophys. Res. Oceans, 119, 445–460, doi:10.1002/2013JC009284.</edition><copyrightDate encoding="w3cdtf">2014</copyrightDate></originInfo><language><languageTerm type="code" authority="rfc3066">en</languageTerm><languageTerm type="code" authority="iso639-2b">eng</languageTerm></language><abstract>Physical processes forced by alongshore winds and currents are known to strongly influence the biogeochemistry of coastal waters. Combining in situ observations (moored platforms, hydrographic surveys) and satellite data (sea surface wind and sea surface height), we investigate the transient occurrence of wind‐driven upwelling/downwelling and current‐driven upwelling events off southeast Australia. Remote‐sensed indices are developed and calibrated with multiannual time series of in situ temperature and current measurements at two shelf locations. Based on archives up to 10 years long, climatological analyses of these indices reveal various latitudinal regimes with respect to seasonality, magnitude, duration of events, and their driving mechanisms (wind or current). Generally, downwelling‐favorable winds prevail in this region; however, we demonstrate that up to 10 wind‐driven upwelling days per month occur during spring/summer at 28–33.5°S and up to 5 days in summer further south. Current‐driven upwelling upstream of the East Australian Current separation zone (∼32°S) occurs twice as often as downstream. Using independent in situ data sets, we show that the response of the coastal ocean is consistent with our climatology of shelf processes: upwelling leads to a large range of temperatures and elevated nutrient concentrations on the shelf, maximized in the wind‐driven case, while downwelling results in destratified nutrient‐poor waters. The combination of these sporadic wind‐ and current‐driven processes may drive an important part of the high‐frequency variability of coastal temperature and nutrient content. Our results suggest that localized nutrient enrichment events of variable magnitude are favored at specific latitudes and seasons, potentially impacting coastal ecosystems.</abstract><abstract type="short">Multisensor analysis of shelf processes combining in situ and satellite data Spatio‐temporal variability of transient wind and current‐driven up/downwelling Cold/nutrient‐rich water intrusions favoured at specific locations/seasons</abstract><subject><genre>keywords</genre><topic>continental shelf oceanography</topic><topic>remote‐sensing</topic><topic>multisensor</topic><topic>wind‐driven upwelling/downwelling</topic><topic>current‐driven upwelling</topic><topic>East Australian Current</topic><topic>Western Boundary Current</topic></subject><relatedItem type="host"><titleInfo><title>Journal of Geophysical Research: Oceans</title></titleInfo><titleInfo type="abbreviated"><title>J. Geophys. Res. Oceans</title></titleInfo><genre type="journal" authority="ISTEX" authorityURI="https://publication-type.data.istex.fr" valueURI="https://publication-type.data.istex.fr/ark:/67375/JMC-0GLKJH51-B">journal</genre><note type="content"> Additional supporting information may be found in the online version of this article.Supporting Info Item: Supporting Information - Supporting Information - Supporting Information - Supporting Information - Supporting Information - Supporting Information - </note><subject><genre>index-terms</genre><topic authorityURI="http://psi.agu.org/taxonomy5/4200">Oceanography: General</topic><topic authorityURI="http://psi.agu.org/taxonomy5/4219">Continental shelf and slope processes</topic><topic authorityURI="http://psi.agu.org/taxonomy5/4279">Upwelling and convergences</topic><topic authorityURI="http://psi.agu.org/taxonomy5/4262">Ocean observing systems</topic><topic authorityURI="http://psi.agu.org/taxonomy5/4273">Physical and biogeochemical interactions</topic><topic authorityURI="http://psi.agu.org/taxonomy5/3000">Marine Geology and Geophysics</topic><topic authorityURI="http://psi.agu.org/taxonomy5/3002">Continental shelf and slope processes</topic><topic authorityURI="http://psi.agu.org/taxonomy5/4900">Paleoceanography</topic><topic authorityURI="http://psi.agu.org/taxonomy5/4964">Upwelling</topic><topic authorityURI="http://psi.agu.org/taxonomy5/4800">Oceanography: Biological and Chemical</topic><topic authorityURI="http://psi.agu.org/taxonomy5/4845">Nutrients and nutrient cycling</topic><topic authorityURI="http://psi.agu.org/taxonomy5/0400">Biogeosciences</topic><topic authorityURI="http://psi.agu.org/taxonomy5/0470">Nutrients and nutrient cycling</topic><topic authorityURI="http://psi.agu.org/taxonomy5/1000">Geochemistry</topic><topic authorityURI="http://psi.agu.org/taxonomy5/1050">Marine geochemistry</topic></subject><subject><genre>article-category</genre><topic>Research Article</topic></subject><identifier type="ISSN">2169-9275</identifier><identifier type="eISSN">2169-9291</identifier><identifier type="DOI">10.1002/(ISSN)2169-9291</identifier><identifier type="PublisherID">JGRC</identifier><part><date>2014</date><detail type="volume"><caption>vol.</caption><number>119</number></detail><detail type="issue"><caption>no.</caption><number>1</number></detail><extent unit="pages"><start>445</start><end>460</end><total>16</total></extent></part></relatedItem><identifier type="istex">CCF1997F0766AE5ADF95C756E38DE8D8B414A1BB</identifier><identifier type="ark">ark:/67375/WNG-HSL89W32-W</identifier><identifier type="DOI">10.1002/2013JC009284</identifier><identifier type="ArticleID">JGRC20536</identifier><accessCondition type="use and reproduction" contentType="copyright">©2013. 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