Subduction of South Pacific Tropical Water and Its Equatorward Pathways as Shown by a Simulated Passive Tracer
This study investigates the subduction of South Pacific Tropical Water (SPTW) and its equatorward pathways using a simulated passive tracer of the consortium Estimating the Circulation & Climate of the Ocean (ECCO). The results show that approximately 5.8 Sv (1 Sv ≡ 10 6 m 3 s −1 ) of the SPTW i...
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| Veröffentlicht in: | Journal of physical oceanography 2013-08, Vol.43 (8), p.1551-1565 |
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| creator | TANGDONG QU SHAN GAO FINE, Rana A |
| description | This study investigates the subduction of South Pacific Tropical Water (SPTW) and its equatorward pathways using a simulated passive tracer of the consortium Estimating the Circulation & Climate of the Ocean (ECCO). The results show that approximately 5.8 Sv (1 Sv ≡ 10
6
m
3
s
−1
) of the SPTW is formed in the subtropical South Pacific Ocean within the density range between 24.0 and 25.0 kg m
−3
, of which about 87% is due to vertical pumping and 13% is due to lateral induction, comparing reasonably well with estimates from climatological data. Once subducted, most SPTW spreads in the subtropical South Pacific. Because of the presence of mixing, some portion of the water is transformed, and its tracer-weighted density steadily increases from an initial value of 24.4 to nearly 25.0 kg m
−3
after 13 years of integration. Approximately 42% of the water makes its way into the equatorial Pacific, either through the western boundary or interior pathway. The two equatorward pathways are essentially of equal importance. A large (~70%) portion of the SPTW entering the equatorial region resurfaces in the central equatorial Pacific. The potential impacts of the resurfacing SPTW on the equatorial thermocline and surface stratification are discussed. |
| doi_str_mv | 10.1175/jpo-d-12-0180.1 |
| format | Article |
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6
m
3
s
−1
) of the SPTW is formed in the subtropical South Pacific Ocean within the density range between 24.0 and 25.0 kg m
−3
, of which about 87% is due to vertical pumping and 13% is due to lateral induction, comparing reasonably well with estimates from climatological data. Once subducted, most SPTW spreads in the subtropical South Pacific. Because of the presence of mixing, some portion of the water is transformed, and its tracer-weighted density steadily increases from an initial value of 24.4 to nearly 25.0 kg m
−3
after 13 years of integration. Approximately 42% of the water makes its way into the equatorial Pacific, either through the western boundary or interior pathway. The two equatorward pathways are essentially of equal importance. A large (~70%) portion of the SPTW entering the equatorial region resurfaces in the central equatorial Pacific. The potential impacts of the resurfacing SPTW on the equatorial thermocline and surface stratification are discussed.</description><identifier>ISSN: 0022-3670</identifier><identifier>EISSN: 1520-0485</identifier><identifier>DOI: 10.1175/jpo-d-12-0180.1</identifier><identifier>CODEN: JPYOBT</identifier><language>eng</language><publisher>Boston, MA: American Meteorological Society</publisher><subject>Climatic data ; Cold ; Density ; Dynamics of the ocean (upper and deep oceans) ; Earth, ocean, space ; Equatorial regions ; Exact sciences and technology ; External geophysics ; General circulation models ; Marine ; Meteorology ; Ocean circulation ; Oceans ; Physics of the oceans ; Precipitation ; Resurfacing ; Salinity ; Stratification ; Subduction ; Temperature ; Thermocline ; Tracers</subject><ispartof>Journal of physical oceanography, 2013-08, Vol.43 (8), p.1551-1565</ispartof><rights>2015 INIST-CNRS</rights><rights>Copyright American Meteorological Society Aug 2013</rights><rights>Copyright American Meteorological Society 2013</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c467t-a46bdc15b4288818cdff19abf7c81ff4dd0faa32e23d5839aa413588da1f5e513</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,3668,27901,27902</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=27632707$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>TANGDONG QU</creatorcontrib><creatorcontrib>SHAN GAO</creatorcontrib><creatorcontrib>FINE, Rana A</creatorcontrib><title>Subduction of South Pacific Tropical Water and Its Equatorward Pathways as Shown by a Simulated Passive Tracer</title><title>Journal of physical oceanography</title><description>This study investigates the subduction of South Pacific Tropical Water (SPTW) and its equatorward pathways using a simulated passive tracer of the consortium Estimating the Circulation & Climate of the Ocean (ECCO). The results show that approximately 5.8 Sv (1 Sv ≡ 10
6
m
3
s
−1
) of the SPTW is formed in the subtropical South Pacific Ocean within the density range between 24.0 and 25.0 kg m
−3
, of which about 87% is due to vertical pumping and 13% is due to lateral induction, comparing reasonably well with estimates from climatological data. Once subducted, most SPTW spreads in the subtropical South Pacific. Because of the presence of mixing, some portion of the water is transformed, and its tracer-weighted density steadily increases from an initial value of 24.4 to nearly 25.0 kg m
−3
after 13 years of integration. Approximately 42% of the water makes its way into the equatorial Pacific, either through the western boundary or interior pathway. The two equatorward pathways are essentially of equal importance. A large (~70%) portion of the SPTW entering the equatorial region resurfaces in the central equatorial Pacific. The potential impacts of the resurfacing SPTW on the equatorial thermocline and surface stratification are discussed.</description><subject>Climatic data</subject><subject>Cold</subject><subject>Density</subject><subject>Dynamics of the ocean (upper and deep oceans)</subject><subject>Earth, ocean, space</subject><subject>Equatorial regions</subject><subject>Exact sciences and technology</subject><subject>External geophysics</subject><subject>General circulation models</subject><subject>Marine</subject><subject>Meteorology</subject><subject>Ocean circulation</subject><subject>Oceans</subject><subject>Physics of the oceans</subject><subject>Precipitation</subject><subject>Resurfacing</subject><subject>Salinity</subject><subject>Stratification</subject><subject>Subduction</subject><subject>Temperature</subject><subject>Thermocline</subject><subject>Tracers</subject><issn>0022-3670</issn><issn>1520-0485</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><sourceid>8G5</sourceid><sourceid>BEC</sourceid><sourceid>BENPR</sourceid><sourceid>GUQSH</sourceid><sourceid>M2O</sourceid><recordid>eNp9kc1rFEEUxAdRcI2evTaI4GVMv_6Y7jlKjBoJJLARj82b_mB7mZ3edM9k2f_eXhJy8JDTg8eviqKqaT4C_Qqg5Pl2n1rXAmsp6Pp61axAMtpSoeXrZkUpYy3vFH3bvCtlSyntgPWrZlovg1vsHNNEUiDrtMwbcos2hmjJXU77aHEkf3H2meDkyNVcyOX9gnPKB8yuovPmgMdCsJD1Jh0mMhwJknXcLWMVnYBS4oOvXmh9ft-8CTgW_-HpnjV_flzeXfxqr29-Xl18u26t6NTcougGZ0EOgmmtQVsXAvQ4BGU1hCCcowGRM8-4k5r3iAK41NohBOkl8LPmy6PvPqf7xZfZ7GKxfhxx8mkpBgQXlFENtKKf_kO3aclTTWeY6nvNWcfESxQIQaWC2milzh8pm1Mp2Qezz3GH-WiAmtNK5vftjflugJnTSuYU9POTL5badMg42VieZUx1nCmq-D9zJpHN</recordid><startdate>20130801</startdate><enddate>20130801</enddate><creator>TANGDONG QU</creator><creator>SHAN GAO</creator><creator>FINE, Rana A</creator><general>American Meteorological Society</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7TG</scope><scope>7TN</scope><scope>7XB</scope><scope>88F</scope><scope>88I</scope><scope>8AF</scope><scope>8FE</scope><scope>8FG</scope><scope>8FK</scope><scope>8G5</scope><scope>ABUWG</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>ARAPS</scope><scope>ATCPS</scope><scope>AZQEC</scope><scope>BEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>BHPHI</scope><scope>BKSAR</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>F1W</scope><scope>GNUQQ</scope><scope>GUQSH</scope><scope>H96</scope><scope>HCIFZ</scope><scope>KL.</scope><scope>L.G</scope><scope>M1Q</scope><scope>M2O</scope><scope>M2P</scope><scope>MBDVC</scope><scope>P5Z</scope><scope>P62</scope><scope>PATMY</scope><scope>PCBAR</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PYCSY</scope><scope>Q9U</scope><scope>S0X</scope><scope>PRINS</scope></search><sort><creationdate>20130801</creationdate><title>Subduction of South Pacific Tropical Water and Its Equatorward Pathways as Shown by a Simulated Passive Tracer</title><author>TANGDONG QU ; SHAN GAO ; FINE, Rana A</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c467t-a46bdc15b4288818cdff19abf7c81ff4dd0faa32e23d5839aa413588da1f5e513</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2013</creationdate><topic>Climatic data</topic><topic>Cold</topic><topic>Density</topic><topic>Dynamics of the ocean (upper and deep oceans)</topic><topic>Earth, ocean, space</topic><topic>Equatorial regions</topic><topic>Exact sciences and technology</topic><topic>External geophysics</topic><topic>General circulation models</topic><topic>Marine</topic><topic>Meteorology</topic><topic>Ocean circulation</topic><topic>Oceans</topic><topic>Physics of the oceans</topic><topic>Precipitation</topic><topic>Resurfacing</topic><topic>Salinity</topic><topic>Stratification</topic><topic>Subduction</topic><topic>Temperature</topic><topic>Thermocline</topic><topic>Tracers</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>TANGDONG QU</creatorcontrib><creatorcontrib>SHAN GAO</creatorcontrib><creatorcontrib>FINE, Rana A</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Oceanic Abstracts</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Military Database (Alumni Edition)</collection><collection>Science Database (Alumni Edition)</collection><collection>STEM Database</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>Research Library (Alumni Edition)</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest One Sustainability</collection><collection>ProQuest Central UK/Ireland</collection><collection>Advanced Technologies & Aerospace Collection</collection><collection>Agricultural & Environmental Science Collection</collection><collection>ProQuest Central Essentials</collection><collection>eLibrary</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>Natural Science Collection</collection><collection>Earth, Atmospheric & Aquatic Science Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>ProQuest Central Student</collection><collection>Research Library Prep</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>SciTech Premium Collection</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Military Database</collection><collection>Research Library</collection><collection>Science Database</collection><collection>Research Library (Corporate)</collection><collection>Advanced Technologies & Aerospace Database</collection><collection>ProQuest Advanced Technologies & Aerospace Collection</collection><collection>Environmental Science Database</collection><collection>Earth, Atmospheric & Aquatic Science Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>Environmental Science Collection</collection><collection>ProQuest Central Basic</collection><collection>SIRS Editorial</collection><collection>ProQuest Central China</collection><jtitle>Journal of physical oceanography</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>TANGDONG QU</au><au>SHAN GAO</au><au>FINE, Rana A</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Subduction of South Pacific Tropical Water and Its Equatorward Pathways as Shown by a Simulated Passive Tracer</atitle><jtitle>Journal of physical oceanography</jtitle><date>2013-08-01</date><risdate>2013</risdate><volume>43</volume><issue>8</issue><spage>1551</spage><epage>1565</epage><pages>1551-1565</pages><issn>0022-3670</issn><eissn>1520-0485</eissn><coden>JPYOBT</coden><abstract>This study investigates the subduction of South Pacific Tropical Water (SPTW) and its equatorward pathways using a simulated passive tracer of the consortium Estimating the Circulation & Climate of the Ocean (ECCO). The results show that approximately 5.8 Sv (1 Sv ≡ 10
6
m
3
s
−1
) of the SPTW is formed in the subtropical South Pacific Ocean within the density range between 24.0 and 25.0 kg m
−3
, of which about 87% is due to vertical pumping and 13% is due to lateral induction, comparing reasonably well with estimates from climatological data. Once subducted, most SPTW spreads in the subtropical South Pacific. Because of the presence of mixing, some portion of the water is transformed, and its tracer-weighted density steadily increases from an initial value of 24.4 to nearly 25.0 kg m
−3
after 13 years of integration. Approximately 42% of the water makes its way into the equatorial Pacific, either through the western boundary or interior pathway. The two equatorward pathways are essentially of equal importance. A large (~70%) portion of the SPTW entering the equatorial region resurfaces in the central equatorial Pacific. The potential impacts of the resurfacing SPTW on the equatorial thermocline and surface stratification are discussed.</abstract><cop>Boston, MA</cop><pub>American Meteorological Society</pub><doi>10.1175/jpo-d-12-0180.1</doi><tpages>15</tpages><oa>free_for_read</oa></addata></record> |
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| ispartof | Journal of physical oceanography, 2013-08, Vol.43 (8), p.1551-1565 |
| issn | 0022-3670 1520-0485 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_1434020810 |
| source | American Meteorological Society; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals |
| subjects | Climatic data Cold Density Dynamics of the ocean (upper and deep oceans) Earth, ocean, space Equatorial regions Exact sciences and technology External geophysics General circulation models Marine Meteorology Ocean circulation Oceans Physics of the oceans Precipitation Resurfacing Salinity Stratification Subduction Temperature Thermocline Tracers |
| title | Subduction of South Pacific Tropical Water and Its Equatorward Pathways as Shown by a Simulated Passive Tracer |
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