Southward displacement of the upper atmosphere zonal jet in the eastern north Pacific due to global warming
The jet stream over the eastern North Pacific (ENPJ) as a core of the atmospheric flow is known to strongly fluctuate meridionally, and its meridional displacement directly influences adjacent regional climate. Here, we investigate how this jet will be changed due to global warming. By analyzing the...
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| Veröffentlicht in: | Geophysical research letters 2014-11, Vol.41 (22), p.7861-7867 |
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| creator | Park, Jae-Heung An, Soon-Il |
| description | The jet stream over the eastern North Pacific (ENPJ) as a core of the atmospheric flow is known to strongly fluctuate meridionally, and its meridional displacement directly influences adjacent regional climate. Here, we investigate how this jet will be changed due to global warming. By analyzing the future scenario experiments of Climate Model Intercomparion Project Phase III (CMIP3) and Phase V (5), it was found that both ENPJ and the eastern tropical Pacific intertropical convergence zone (ITCZ) tend to move southward, which are closely related to the tropical eastern Pacific warming trend. Tropical eastern Pacific warming leads to not only the southward migration of ITCZ by southward‐shifting the off‐equatorial eastern Pacific warm pool, but also the southward shift of ENPJ by increasing baroclinic instability of the atmosphere in subtropical region through intensifying the meridional sea surface temperature (SST) gradient. Not primary but yet secondly the southward shift of ITCZ contributes to the southward shift of ENPJ through a kinematic connection bridged by local Hadley circulation.
Key Points
Global warming leads to the southward movement of eastern North Pacific jetJet movement is related to the tropical Pacific response to the global warmingITCZ, Hadley circulation, and midlatitude jet are dynamically linked together |
| doi_str_mv | 10.1002/2014GL062175 |
| format | Article |
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Key Points
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Key Points
Global warming leads to the southward movement of eastern North Pacific jetJet movement is related to the tropical Pacific response to the global warmingITCZ, Hadley circulation, and midlatitude jet are dynamically linked together</description><subject>Atmosphere</subject><subject>Atmospherics</subject><subject>Baroclinic instability</subject><subject>Circulation</subject><subject>Climate</subject><subject>Climate change</subject><subject>Climate models</subject><subject>Convergence</subject><subject>Convergence zones</subject><subject>Cyclones</subject><subject>Displacement</subject><subject>Equatorial regions</subject><subject>Geophysics</subject><subject>Global warming</subject><subject>Hadley circulation</subject><subject>Instability</subject><subject>Intertropical convergence zone</subject><subject>Jet stream</subject><subject>Jet streams (meteorology)</subject><subject>Meteorology</subject><subject>Migration</subject><subject>North Pacific jet</subject><subject>Ocean currents</subject><subject>Phase shift</subject><subject>Regional climates</subject><subject>Rivers</subject><subject>Sea surface</subject><subject>Sea surface temperature</subject><subject>Surface temperature</subject><subject>Temperature</subject><subject>Temperature effects</subject><subject>Tropical climate</subject><subject>tropical eastern Pacific</subject><subject>Upper atmosphere</subject><issn>0094-8276</issn><issn>1944-8007</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><recordid>eNqN0U2LFDEQBuAgCo6jN39AwIsHe610viZHWbQVhlFcxWPIpKt3MtvdaZNu1vXXm90REQ-LEKgcnrcO9RLynMEZA6hf18BEswVVMy0fkBUzQlQbAP2QrABM-ddaPSZPcj4CAAfOVuTqIi7z4dqllrYhT73zOOA409jR-YB0mSZM1M1DzNMBE9KfcXQ9PeJMw3gn0OUZ00jHmOYD_eR86IKn7YJ0jvSyj_vCy_ohjJdPyaPO9Rmf_Z5r8vXd2y_n76vtx-bD-Ztt5YVWvPIKxN5w5Lrm4LxqTbsXvJag0LWtcNA55aSRe66dYbJmtVfecCG4w9ZLxdfk5WnvlOL3BfNsh5A99r0bMS7ZMiWFUloa-B_KhBS8vDV58Q89xiWVaxRlGGyMEZLdq5TQWm4kv9316qR8ijkn7OyUwuDSjWVgb6u0f1dZeH3i16HHm3utbT5vZbkbL6HqFAqloB9_Qi5dWaV5kd92jeXAGrW72FngvwASQ6xr</recordid><startdate>20141128</startdate><enddate>20141128</enddate><creator>Park, Jae-Heung</creator><creator>An, Soon-Il</creator><general>Blackwell Publishing Ltd</general><general>John Wiley & Sons, Inc</general><scope>BSCLL</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TG</scope><scope>7TN</scope><scope>8FD</scope><scope>F1W</scope><scope>FR3</scope><scope>H8D</scope><scope>H96</scope><scope>KL.</scope><scope>KR7</scope><scope>L.G</scope><scope>L7M</scope><scope>7QH</scope><scope>7ST</scope><scope>7U6</scope><scope>7UA</scope><scope>C1K</scope></search><sort><creationdate>20141128</creationdate><title>Southward displacement of the upper atmosphere zonal jet in the eastern north Pacific due to global warming</title><author>Park, Jae-Heung ; An, Soon-Il</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4763-c604b93e37230ac6d9db432506eadd4a0fa6a595b37a915212c6c93443aedc563</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Atmosphere</topic><topic>Atmospherics</topic><topic>Baroclinic instability</topic><topic>Circulation</topic><topic>Climate</topic><topic>Climate change</topic><topic>Climate models</topic><topic>Convergence</topic><topic>Convergence zones</topic><topic>Cyclones</topic><topic>Displacement</topic><topic>Equatorial regions</topic><topic>Geophysics</topic><topic>Global warming</topic><topic>Hadley circulation</topic><topic>Instability</topic><topic>Intertropical convergence zone</topic><topic>Jet stream</topic><topic>Jet streams (meteorology)</topic><topic>Meteorology</topic><topic>Migration</topic><topic>North Pacific jet</topic><topic>Ocean currents</topic><topic>Phase shift</topic><topic>Regional climates</topic><topic>Rivers</topic><topic>Sea surface</topic><topic>Sea surface temperature</topic><topic>Surface temperature</topic><topic>Temperature</topic><topic>Temperature effects</topic><topic>Tropical climate</topic><topic>tropical eastern Pacific</topic><topic>Upper atmosphere</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Park, Jae-Heung</creatorcontrib><creatorcontrib>An, Soon-Il</creatorcontrib><collection>Istex</collection><collection>CrossRef</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Oceanic Abstracts</collection><collection>Technology Research Database</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Civil Engineering Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Aqualine</collection><collection>Environment Abstracts</collection><collection>Sustainability Science Abstracts</collection><collection>Water Resources Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><jtitle>Geophysical research letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Park, Jae-Heung</au><au>An, Soon-Il</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Southward displacement of the upper atmosphere zonal jet in the eastern north Pacific due to global warming</atitle><jtitle>Geophysical research letters</jtitle><addtitle>Geophys. Res. Lett</addtitle><date>2014-11-28</date><risdate>2014</risdate><volume>41</volume><issue>22</issue><spage>7861</spage><epage>7867</epage><pages>7861-7867</pages><issn>0094-8276</issn><eissn>1944-8007</eissn><abstract>The jet stream over the eastern North Pacific (ENPJ) as a core of the atmospheric flow is known to strongly fluctuate meridionally, and its meridional displacement directly influences adjacent regional climate. Here, we investigate how this jet will be changed due to global warming. By analyzing the future scenario experiments of Climate Model Intercomparion Project Phase III (CMIP3) and Phase V (5), it was found that both ENPJ and the eastern tropical Pacific intertropical convergence zone (ITCZ) tend to move southward, which are closely related to the tropical eastern Pacific warming trend. Tropical eastern Pacific warming leads to not only the southward migration of ITCZ by southward‐shifting the off‐equatorial eastern Pacific warm pool, but also the southward shift of ENPJ by increasing baroclinic instability of the atmosphere in subtropical region through intensifying the meridional sea surface temperature (SST) gradient. Not primary but yet secondly the southward shift of ITCZ contributes to the southward shift of ENPJ through a kinematic connection bridged by local Hadley circulation.
Key Points
Global warming leads to the southward movement of eastern North Pacific jetJet movement is related to the tropical Pacific response to the global warmingITCZ, Hadley circulation, and midlatitude jet are dynamically linked together</abstract><cop>Washington</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1002/2014GL062175</doi><tpages>7</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Atmosphere Atmospherics Baroclinic instability Circulation Climate Climate change Climate models Convergence Convergence zones Cyclones Displacement Equatorial regions Geophysics Global warming Hadley circulation Instability Intertropical convergence zone Jet stream Jet streams (meteorology) Meteorology Migration North Pacific jet Ocean currents Phase shift Regional climates Rivers Sea surface Sea surface temperature Surface temperature Temperature Temperature effects Tropical climate tropical eastern Pacific Upper atmosphere |
| title | Southward displacement of the upper atmosphere zonal jet in the eastern north Pacific due to global warming |
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