Research Spotlight: Using satellite data to estimate the North Atlantic Ocean circulation
Identifieur interne : 000205 ( Istex/Corpus ); précédent : 000204; suivant : 000206Research Spotlight: Using satellite data to estimate the North Atlantic Ocean circulation
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
By redistributing heat and freshwater around the planet, ocean currents play a crucial role in regulating Earth's climate. Accurate knowledge of the subtle regional variations in Earth's gravity field is fundamental to the measurement of ocean currents, but the challenge of mapping Earth's gravity in sufficient detail has previously limited scientists' ability to reliably determine the ocean's time‐mean circulation. To address this problem, in October 2009 the European Space Agency launched the Gravity field and steady‐state Ocean Circulation Explorer (GOCE) satellite with the aim of mapping Earth's gravity field with unprecedented spatial resolution. Bingham et al. present an initial assessment of the performance of GOCE by using the first data from the satellite to estimate the time‐mean circulation of the North Atlantic Ocean. This basin is particularly interesting because it contains the Gulf Stream, the world's strongest current and a key component of the global overturning circulation, which carries heat from the equator to high northerly latitudes. The scientists show that with just 2 months of observations, the GOCE estimate of the North Atlantic circulation is superior to that obtained from 8 years of data from the Gravity Recovery and Climate Experiment (GRACE) satellite. In many places, the current speeds estimated from the GOCE data compare well with those obtained from in situ observations, providing strong validation of the GOCE mission design. Accumulation of data as the mission progresses could lead to a more accurate and detailed map of the ocean's currents. (Geophysical Research Letters, doi:10.1029/2010GL045633, 2011)
Url:
DOI: 10.1029/2011EO100013
Links to Exploration step
ISTEX:8B9E52BCBDEC5CE699087AE3C182E60774E8965BLe document en format XML
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Accurate knowledge of the subtle regional variations in Earth's gravity field is fundamental to the measurement of ocean currents, but the challenge of mapping Earth's gravity in sufficient detail has previously limited scientists' ability to reliably determine the ocean's time‐mean circulation. To address this problem, in October 2009 the European Space Agency launched the Gravity field and steady‐state Ocean Circulation Explorer (GOCE) satellite with the aim of mapping Earth's gravity field with unprecedented spatial resolution. Bingham et al. present an initial assessment of the performance of GOCE by using the first data from the satellite to estimate the time‐mean circulation of the North Atlantic Ocean. This basin is particularly interesting because it contains the Gulf Stream, the world's strongest current and a key component of the global overturning circulation, which carries heat from the equator to high northerly latitudes. The scientists show that with just 2 months of observations, the GOCE estimate of the North Atlantic circulation is superior to that obtained from 8 years of data from the Gravity Recovery and Climate Experiment (GRACE) satellite. In many places, the current speeds estimated from the GOCE data compare well with those obtained from in situ observations, providing strong validation of the GOCE mission design. Accumulation of data as the mission progresses could lead to a more accurate and detailed map of the ocean's currents. 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Accurate knowledge of the subtle regional variations in Earth's gravity field is fundamental to the measurement of ocean currents, but the challenge of mapping Earth's gravity in sufficient detail has previously limited scientists' ability to reliably determine the ocean's time‐mean circulation. To address this problem, in October 2009 the European Space Agency launched the Gravity field and steady‐state Ocean Circulation Explorer (GOCE) satellite with the aim of mapping Earth's gravity field with unprecedented spatial resolution. Bingham et al. present an initial assessment of the performance of GOCE by using the first data from the satellite to estimate the time‐mean circulation of the North Atlantic Ocean. This basin is particularly interesting because it contains the Gulf Stream, the world's strongest current and a key component of the global overturning circulation, which carries heat from the equator to high northerly latitudes. The scientists show that with just 2 months of observations, the GOCE estimate of the North Atlantic circulation is superior to that obtained from 8 years of data from the Gravity Recovery and Climate Experiment (GRACE) satellite. In many places, the current speeds estimated from the GOCE data compare well with those obtained from in situ observations, providing strong validation of the GOCE mission design. Accumulation of data as the mission progresses could lead to a more accurate and detailed map of the ocean's currents. 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Accurate knowledge of the subtle regional variations in Earth's gravity field is fundamental to the measurement of ocean currents, but the challenge of mapping Earth's gravity in sufficient detail has previously limited scientists' ability to reliably determine the ocean's time‐mean circulation. To address this problem, in October 2009 the European Space Agency launched the Gravity field and steady‐state Ocean Circulation Explorer (GOCE) satellite with the aim of mapping Earth's gravity field with unprecedented spatial resolution. <hi rend="italic">Bingham et al.</hi> present an initial assessment of the performance of GOCE by using the first data from the satellite to estimate the time‐mean circulation of the North Atlantic Ocean. This basin is particularly interesting because it contains the Gulf Stream, the world's strongest current and a key component of the global overturning circulation, which carries heat from the equator to high northerly latitudes. The scientists show that with just 2 months of observations, the GOCE estimate of the North Atlantic circulation is superior to that obtained from 8 years of data from the Gravity Recovery and Climate Experiment (GRACE) satellite. In many places, the current speeds estimated from the GOCE data compare well with those obtained from in situ observations, providing strong validation of the GOCE mission design. Accumulation of data as the mission progresses could lead to a more accurate and detailed map of the ocean's currents. (<hi rend="italic">Geophysical Research Letters</hi>, doi:10.1029/2010GL045633, 2011)</p></abstract><textClass><keywords><term xml:id="eost17704-kwd-0001">GOCE</term><term xml:id="eost17704-kwd-0002">mean dynamic topography</term><term xml:id="eost17704-kwd-0003">geostrophic circulation</term><term xml:id="eost17704-kwd-0004">geoid</term></keywords><classCode scheme="http://psi.agu.org/taxonomy5/1200">GEODESY AND GRAVITY</classCode><classCode scheme="http://psi.agu.org/taxonomy5/1600">GLOBAL CHANGE</classCode><classCode scheme="http://psi.agu.org/taxonomy5/3000">MARINE GEOLOGY AND GEOPHYSICS</classCode><classCode scheme="http://psi.agu.org/taxonomy5/4500">OCEANOGRAPHY: PHYSICAL</classCode><classCode scheme="http://psi.agu.org/taxonomy5/6900">RADIO SCIENCE</classCode><classCode scheme="http://psi.agu.org/taxonomy5/7200">SEISMOLOGY</classCode><classCode scheme="articleCategory">Research spotlight</classCode><classCode scheme="tocHeading1">Research spotlight</classCode></textClass><langUsage><language ident="EN"></language></langUsage></profileDesc></teiHeader></istex:fulltextTEI><json:item><extension>txt</extension><original>false</original><mimetype>text/plain</mimetype><uri>https://api.istex.fr/document/8B9E52BCBDEC5CE699087AE3C182E60774E8965B/fulltext/txt</uri></json:item></fulltext><metadata><istex:metadataXml wicri:clean="Wiley component found"><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="eost17704"><header><publicationMeta level="product"><doi>10.1002/(ISSN)2324-9250</doi><issn type="print">0096-3941</issn><issn type="electronic">2324-9250</issn><idGroup><id type="product" value="EOST"></id><id type="coden" value="ETAGCT"></id></idGroup><titleGroup><title type="main" xml:lang="en" sort="EOS, TRANSACTIONS AMERICAN GEOPHYSICAL UNION">Eos, Transactions American Geophysical Union</title><title type="short">Eos Trans. 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AGU</journalTitle>, <vol>92</vol>(<issue>10</issue>), <pageFirst>88</pageFirst>.</citation></selfCitationGroup><linkGroup><link type="toTypesetVersion" href="file:EOST.EOST17704.pdf"></link></linkGroup></publicationMeta><contentMeta><countGroup><count type="wordTotal" number="1700"></count></countGroup><titleGroup><title type="main">Research Spotlight: Using satellite data to estimate the North Atlantic Ocean circulation</title><title type="shortAuthors">Tretkoff</title></titleGroup><creators><creator xml:id="eost17704-cr-0001" creatorRole="author" affiliationRef="#eost17704-aff-0001"><personName><givenNames>Ernie</givenNames><familyName>Tretkoff</familyName></personName></creator></creators><affiliationGroup><affiliation xml:id="eost17704-aff-0001" countryCode="US" type="organization"><unparsedAffiliation>American Geophysical Union,Washington, D. 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To address this problem, in October 2009 the European Space Agency launched the Gravity field and steady‐state Ocean Circulation Explorer (GOCE) satellite with the aim of mapping Earth's gravity field with unprecedented spatial resolution. <i>Bingham et al.</i> present an initial assessment of the performance of GOCE by using the first data from the satellite to estimate the time‐mean circulation of the North Atlantic Ocean. This basin is particularly interesting because it contains the Gulf Stream, the world's strongest current and a key component of the global overturning circulation, which carries heat from the equator to high northerly latitudes. The scientists show that with just 2 months of observations, the GOCE estimate of the North Atlantic circulation is superior to that obtained from 8 years of data from the Gravity Recovery and Climate Experiment (GRACE) satellite. In many places, the current speeds estimated from the GOCE data compare well with those obtained from in situ observations, providing strong validation of the GOCE mission design. Accumulation of data as the mission progresses could lead to a more accurate and detailed map of the ocean's currents. (<i>Geophysical Research Letters</i>, doi:10.1029/2010GL045633, 2011)</p></abstract></abstractGroup></contentMeta></header></component></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>Research Spotlight: Using satellite data to estimate the North Atlantic Ocean circulation</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>Research Spotlight: Using satellite data to estimate the North Atlantic Ocean circulation</title></titleInfo><name type="personal"><namePart type="given">Ernie</namePart><namePart type="family">Tretkoff</namePart><affiliation>American Geophysical Union,Washington, D. C., USA</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">2011-03-08</dateIssued><edition>Tretkoff,E., (2011), Research Spotlight: Using satellite data to estimate the North Atlantic Ocean circulation, Eos Trans. 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">1700</extent></physicalDescription><abstract>By redistributing heat and freshwater around the planet, ocean currents play a crucial role in regulating Earth's climate. Accurate knowledge of the subtle regional variations in Earth's gravity field is fundamental to the measurement of ocean currents, but the challenge of mapping Earth's gravity in sufficient detail has previously limited scientists' ability to reliably determine the ocean's time‐mean circulation. To address this problem, in October 2009 the European Space Agency launched the Gravity field and steady‐state Ocean Circulation Explorer (GOCE) satellite with the aim of mapping Earth's gravity field with unprecedented spatial resolution. Bingham et al. present an initial assessment of the performance of GOCE by using the first data from the satellite to estimate the time‐mean circulation of the North Atlantic Ocean. This basin is particularly interesting because it contains the Gulf Stream, the world's strongest current and a key component of the global overturning circulation, which carries heat from the equator to high northerly latitudes. The scientists show that with just 2 months of observations, the GOCE estimate of the North Atlantic circulation is superior to that obtained from 8 years of data from the Gravity Recovery and Climate Experiment (GRACE) satellite. In many places, the current speeds estimated from the GOCE data compare well with those obtained from in situ observations, providing strong validation of the GOCE mission design. Accumulation of data as the mission progresses could lead to a more accurate and detailed map of the ocean's currents. (Geophysical Research Letters, doi:10.1029/2010GL045633, 2011)</abstract><subject><genre>keywords</genre><topic>GOCE</topic><topic>mean dynamic topography</topic><topic>geostrophic circulation</topic><topic>geoid</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/taxonomy5/1200">GEODESY AND GRAVITY</topic><topic authorityURI="http://psi.agu.org/taxonomy5/1240">Satellite geodesy: results</topic><topic authorityURI="http://psi.agu.org/taxonomy5/1222">Ocean monitoring with geodetic techniques</topic><topic authorityURI="http://psi.agu.org/taxonomy5/1225">Global change from geodesy</topic><topic authorityURI="http://psi.agu.org/taxonomy5/1218">Mass balance</topic><topic authorityURI="http://psi.agu.org/taxonomy5/1222">Ocean monitoring with geodetic techniques</topic><topic authorityURI="http://psi.agu.org/taxonomy5/1600">GLOBAL CHANGE</topic><topic authorityURI="http://psi.agu.org/taxonomy5/1641">Sea level change</topic><topic authorityURI="http://psi.agu.org/taxonomy5/3000">MARINE GEOLOGY AND GEOPHYSICS</topic><topic authorityURI="http://psi.agu.org/taxonomy5/3010">Gravity and isostasy</topic><topic authorityURI="http://psi.agu.org/taxonomy5/4500">OCEANOGRAPHY: PHYSICAL</topic><topic authorityURI="http://psi.agu.org/taxonomy5/4532">General circulation</topic><topic authorityURI="http://psi.agu.org/taxonomy5/4532">General circulation</topic><topic authorityURI="http://psi.agu.org/taxonomy5/4556">Sea level: variations and mean</topic><topic authorityURI="http://psi.agu.org/taxonomy5/4560">Surface waves and tides</topic><topic authorityURI="http://psi.agu.org/taxonomy5/6900">RADIO SCIENCE</topic><topic authorityURI="http://psi.agu.org/taxonomy5/6929">Ionospheric physics</topic><topic authorityURI="http://psi.agu.org/taxonomy5/6959">Radio oceanography</topic><topic authorityURI="http://psi.agu.org/taxonomy5/7200">SEISMOLOGY</topic><topic authorityURI="http://psi.agu.org/taxonomy5/7215">Earthquake source observations</topic><topic authorityURI="http://psi.agu.org/taxonomy5/7230">Seismicity and tectonics</topic><topic authorityURI="http://psi.agu.org/taxonomy5/7240">Subduction zones</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">8B9E52BCBDEC5CE699087AE3C182E60774E8965B</identifier><identifier type="DOI">10.1029/2011EO100013</identifier><identifier type="ArticleID">EOST17704</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/8B9E52BCBDEC5CE699087AE3C182E60774E8965B/metadata/json</uri></json:item></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
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