Numerical simulation of the equatorial wind jet in the thermosphere
We have examined excitation mechanism of the fast jet of the neutral atmosphere along the dip equator in the upper thermosphere. The zonal momentum balance of the neutral atmosphere is estimated using an atmosphere‐ionosphere coupled model. The coupled model used in this study is a self‐consistent g...
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| Veröffentlicht in: | Journal of Geophysical Research: Space Physics 2012-03, Vol.117 (A3), p.n/a |
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| creator | Miyoshi, Yasunobu Fujiwara, Hitoshi Jin, Hidekatsu Shinagawa, Hiroyuki Liu, Huixin |
| description | We have examined excitation mechanism of the fast jet of the neutral atmosphere along the dip equator in the upper thermosphere. The zonal momentum balance of the neutral atmosphere is estimated using an atmosphere‐ionosphere coupled model. The coupled model used in this study is a self‐consistent global model of the atmosphere and ionosphere covering the height range from the ground surface to the exobase. It can reproduce the observed equatorial fast jet above 250 km heights. The analysis of the zonal momentum balance reveals that the pressure gradient and ion drag play an important role on the formation of the fast jet near the dip equator. In particular, the fast jet near the equator is closely related with the latitudinal difference of the ion drag force. We also investigate the zonal momentum balance of the longitudinal wave‐4 structure of the zonal wind in the fixed local time frame. Furthermore, significant day‐to‐day variations in the neutral zonal wind and the ion drift near the dip equator are obtained although the solar UV/EUV fluxes and the energy input from the magnetosphere are assumed to be constant during the numerical simulation. This result indicates the importance of the lower atmospheric variability on day‐to‐day variations in the thermosphere/ionosphere.
Key Points
The zonal momentum balance of the equatorial jet in the thermosphere
The longitudinal structure of the zonal wind caused by the DE3
Day‐to‐day variations in zonal ion drift induced by the lower atmosphere |
| doi_str_mv | 10.1029/2011JA017373 |
| format | Article |
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Key Points
The zonal momentum balance of the equatorial jet in the thermosphere
The longitudinal structure of the zonal wind caused by the DE3
Day‐to‐day variations in zonal ion drift induced by the lower atmosphere</description><identifier>ISSN: 0148-0227</identifier><identifier>ISSN: 2169-9380</identifier><identifier>EISSN: 2156-2202</identifier><identifier>EISSN: 2169-9402</identifier><identifier>DOI: 10.1029/2011JA017373</identifier><language>eng</language><publisher>Washington, DC: Blackwell Publishing Ltd</publisher><subject>Atmosphere ; Atmospheric sciences ; Earth sciences ; Earth, ocean, space ; Exact sciences and technology ; Ionosphere ; thermosphere dynamics ; Tides ; Wind ; zonal wind</subject><ispartof>Journal of Geophysical Research: Space Physics, 2012-03, Vol.117 (A3), p.n/a</ispartof><rights>Copyright 2012 by the American Geophysical Union</rights><rights>2015 INIST-CNRS</rights><rights>Copyright American Geophysical Union 2012</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c5332-d9d3265c3c5634bd82e73d4d4214e569ee7e850e1124868ce14f3d5b837dca303</citedby><cites>FETCH-LOGICAL-c5332-d9d3265c3c5634bd82e73d4d4214e569ee7e850e1124868ce14f3d5b837dca303</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1029%2F2011JA017373$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1029%2F2011JA017373$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,777,781,1412,1428,11495,27905,27906,45555,45556,46390,46449,46814,46873</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=25821893$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Miyoshi, Yasunobu</creatorcontrib><creatorcontrib>Fujiwara, Hitoshi</creatorcontrib><creatorcontrib>Jin, Hidekatsu</creatorcontrib><creatorcontrib>Shinagawa, Hiroyuki</creatorcontrib><creatorcontrib>Liu, Huixin</creatorcontrib><title>Numerical simulation of the equatorial wind jet in the thermosphere</title><title>Journal of Geophysical Research: Space Physics</title><addtitle>J. Geophys. Res</addtitle><description>We have examined excitation mechanism of the fast jet of the neutral atmosphere along the dip equator in the upper thermosphere. The zonal momentum balance of the neutral atmosphere is estimated using an atmosphere‐ionosphere coupled model. The coupled model used in this study is a self‐consistent global model of the atmosphere and ionosphere covering the height range from the ground surface to the exobase. It can reproduce the observed equatorial fast jet above 250 km heights. The analysis of the zonal momentum balance reveals that the pressure gradient and ion drag play an important role on the formation of the fast jet near the dip equator. In particular, the fast jet near the equator is closely related with the latitudinal difference of the ion drag force. We also investigate the zonal momentum balance of the longitudinal wave‐4 structure of the zonal wind in the fixed local time frame. Furthermore, significant day‐to‐day variations in the neutral zonal wind and the ion drift near the dip equator are obtained although the solar UV/EUV fluxes and the energy input from the magnetosphere are assumed to be constant during the numerical simulation. This result indicates the importance of the lower atmospheric variability on day‐to‐day variations in the thermosphere/ionosphere.
Key Points
The zonal momentum balance of the equatorial jet in the thermosphere
The longitudinal structure of the zonal wind caused by the DE3
Day‐to‐day variations in zonal ion drift induced by the lower atmosphere</description><subject>Atmosphere</subject><subject>Atmospheric sciences</subject><subject>Earth sciences</subject><subject>Earth, ocean, space</subject><subject>Exact sciences and technology</subject><subject>Ionosphere</subject><subject>thermosphere dynamics</subject><subject>Tides</subject><subject>Wind</subject><subject>zonal wind</subject><issn>0148-0227</issn><issn>2169-9380</issn><issn>2156-2202</issn><issn>2169-9402</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><recordid>eNqNkV1rFDEUhoMouLS98wcMguCFU5OT78tl0W3rugWpeBnSzBnMOh_bZIbaf2_qliJelAbCuTjP8x5yQsgbRk8ZBfsRKGMXS8o01_wFWQCTqgag8JIsKBOmpgD6NTnJeUfLEVIJyhZktZ17TDH4rsqxnzs_xXGoxraafmKFN7OfxhRL8zYOTbXDqYrD31a5qR_zvhQ8Jq9a32U8eahH5PvnT1ers3pzuT5fLTd1kJxD3diGg5KBB6m4uG4MoOaNaAQwgVJZRI1GUmQMhFEmIBMtb-S14boJnlN-RN4fcvdpvJkxT66POWDX-QHHOTtGLRdKl2U8AwWhlJRUFvTtf-hunNNQHuKs4lZpA_pJCLTUlilVoA8HKKQx54St26fY-3RXxt1PtO7fPyr4u4dMn8v-2-SHEPOjA9IAM_ae4wfuNnZ492Smu1h_WxaLQrHqgxXzhL8fLZ9-OVVQ6X5s107D1Waz_frFrfgfpq2q0w</recordid><startdate>201203</startdate><enddate>201203</enddate><creator>Miyoshi, Yasunobu</creator><creator>Fujiwara, Hitoshi</creator><creator>Jin, Hidekatsu</creator><creator>Shinagawa, Hiroyuki</creator><creator>Liu, Huixin</creator><general>Blackwell Publishing Ltd</general><general>American Geophysical Union</general><scope>BSCLL</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7TG</scope><scope>7XB</scope><scope>88I</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>8FK</scope><scope>ABUWG</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>ARAPS</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>BHPHI</scope><scope>BKSAR</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>GNUQQ</scope><scope>H8D</scope><scope>HCIFZ</scope><scope>KL.</scope><scope>L7M</scope><scope>M2P</scope><scope>P5Z</scope><scope>P62</scope><scope>PCBAR</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>Q9U</scope></search><sort><creationdate>201203</creationdate><title>Numerical simulation of the equatorial wind jet in the thermosphere</title><author>Miyoshi, Yasunobu ; Fujiwara, Hitoshi ; Jin, Hidekatsu ; Shinagawa, Hiroyuki ; Liu, Huixin</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c5332-d9d3265c3c5634bd82e73d4d4214e569ee7e850e1124868ce14f3d5b837dca303</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Atmosphere</topic><topic>Atmospheric sciences</topic><topic>Earth sciences</topic><topic>Earth, ocean, space</topic><topic>Exact sciences and technology</topic><topic>Ionosphere</topic><topic>thermosphere dynamics</topic><topic>Tides</topic><topic>Wind</topic><topic>zonal wind</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Miyoshi, Yasunobu</creatorcontrib><creatorcontrib>Fujiwara, Hitoshi</creatorcontrib><creatorcontrib>Jin, Hidekatsu</creatorcontrib><creatorcontrib>Shinagawa, Hiroyuki</creatorcontrib><creatorcontrib>Liu, Huixin</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Science Database (Alumni Edition)</collection><collection>Technology Research Database</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</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>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>Natural Science Collection (ProQuest)</collection><collection>Earth, Atmospheric & Aquatic Science Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>ProQuest Central Student</collection><collection>Aerospace Database</collection><collection>SciTech Premium Collection</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Science Database</collection><collection>Advanced Technologies & Aerospace Database</collection><collection>ProQuest Advanced Technologies & Aerospace Collection</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>ProQuest Central Basic</collection><jtitle>Journal of Geophysical Research: Space Physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Miyoshi, Yasunobu</au><au>Fujiwara, Hitoshi</au><au>Jin, Hidekatsu</au><au>Shinagawa, Hiroyuki</au><au>Liu, Huixin</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Numerical simulation of the equatorial wind jet in the thermosphere</atitle><jtitle>Journal of Geophysical Research: Space Physics</jtitle><addtitle>J. Geophys. Res</addtitle><date>2012-03</date><risdate>2012</risdate><volume>117</volume><issue>A3</issue><epage>n/a</epage><issn>0148-0227</issn><issn>2169-9380</issn><eissn>2156-2202</eissn><eissn>2169-9402</eissn><abstract>We have examined excitation mechanism of the fast jet of the neutral atmosphere along the dip equator in the upper thermosphere. The zonal momentum balance of the neutral atmosphere is estimated using an atmosphere‐ionosphere coupled model. The coupled model used in this study is a self‐consistent global model of the atmosphere and ionosphere covering the height range from the ground surface to the exobase. It can reproduce the observed equatorial fast jet above 250 km heights. The analysis of the zonal momentum balance reveals that the pressure gradient and ion drag play an important role on the formation of the fast jet near the dip equator. In particular, the fast jet near the equator is closely related with the latitudinal difference of the ion drag force. We also investigate the zonal momentum balance of the longitudinal wave‐4 structure of the zonal wind in the fixed local time frame. Furthermore, significant day‐to‐day variations in the neutral zonal wind and the ion drift near the dip equator are obtained although the solar UV/EUV fluxes and the energy input from the magnetosphere are assumed to be constant during the numerical simulation. This result indicates the importance of the lower atmospheric variability on day‐to‐day variations in the thermosphere/ionosphere.
Key Points
The zonal momentum balance of the equatorial jet in the thermosphere
The longitudinal structure of the zonal wind caused by the DE3
Day‐to‐day variations in zonal ion drift induced by the lower atmosphere</abstract><cop>Washington, DC</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1029/2011JA017373</doi><tpages>10</tpages></addata></record> |
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| language | eng |
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| source | Wiley Online Library Journals Frontfile Complete; Wiley Free Content; Wiley-Blackwell AGU Digital Library; Alma/SFX Local Collection |
| subjects | Atmosphere Atmospheric sciences Earth sciences Earth, ocean, space Exact sciences and technology Ionosphere thermosphere dynamics Tides Wind zonal wind |
| title | Numerical simulation of the equatorial wind jet in the thermosphere |
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