Comparison of the He+ layer observed over Arecibo during solar maximum and solar minimum with CTIP model results
Light ion concentration observations from the Arecibo incoherent scatter radar have shown regions of He+ layering in the topside ionosphere in the postmidnight hours. The He+ layering phenomenon has been observed during both solar maximum and solar minimum conditions. During solar maximum the layer...
Gespeichert in:
| Veröffentlicht in: | Journal of Geophysical Research. A. Space Physics 2003-12, Vol.108 (A12), p.SIA17.1-n/a |
|---|---|
| Hauptverfasser: | , , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | n/a |
|---|---|
| container_issue | A12 |
| container_start_page | SIA17.1 |
| container_title | Journal of Geophysical Research. A. Space Physics |
| container_volume | 108 |
| creator | Wilford, C. R. Moffett, R. J. Rees, J. M. Bailey, G. J. Gonzalez, S. A. |
| description | Light ion concentration observations from the Arecibo incoherent scatter radar have shown regions of He+ layering in the topside ionosphere in the postmidnight hours. The He+ layering phenomenon has been observed during both solar maximum and solar minimum conditions. During solar maximum the layer is well defined, giving maximum relative abundances of over 50%. The observational results also show regions of He+ dominance in the topside ionosphere during solar maximum in the height range 750–1200 km. During solar minimum the magnitude of the layer is less, giving a maximum relative abundance of only ∼20%; however, the layer is still a well‐defined feature. The coupled thermosphere‐ionosphere‐plasmasphere (CTIP) model is shown to model accurately the He+ layer and the regions of He+ dominance, provided that the modeled temperature profiles are normalized to the observed values. This study serves to further highlight the importance of helium ions in the topside ionosphere, particularly during solar maximum nighttime conditions. |
| doi_str_mv | 10.1029/2003JA009940 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_27816600</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>27816600</sourcerecordid><originalsourceid>FETCH-LOGICAL-c3782-849cce053f2beaba7dd1f01d127c86210a1de7d3f74807086375071e8531e8ab3</originalsourceid><addsrcrecordid>eNp9UcFu1DAQtRBIrJbe-ABf4AKBsZ3EyXG1YrddVaXAVuVmOfGEGpx4aydt9-9xuwV6Yg4zmqf3njRvCHnN4AMDXn_kAGKzAKjrHJ6RGWdFmXEO_DmZAcurDDiXL8lRjD8hVV6UObAZ2S19v9PBRj9Q39HxCukxvqNO7zFQ30QMN2iov0nbImBrG0_NFOzwg0bvdKC9vrP91FM9mD-IHR6QWzte0eX25Jz23qCjAePkxviKvOi0i3j0OOfkYvVpuzzOTj-vT5aL06wVsuJZlddti1CIjjeoGy2NYR0ww7hsq5Iz0MygNKKTeQUSqlLIAiTDqhCp6UbMyduD7y746wnjqHobW3ROD-inqLisWFmmzObk_YHYBh9jwE7tgu112CsG6j5Z9TTZRH_z6Ktjq10X9NDa-E9T5EKysk48ceDdWof7_3qqzfrrgsn0oKTKDiobR7z7q9LhlyplOlFdnq3VarX9wr5fflMb8RsbFpW8</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>27816600</pqid></control><display><type>article</type><title>Comparison of the He+ layer observed over Arecibo during solar maximum and solar minimum with CTIP model results</title><source>Wiley Journals</source><source>Wiley-Blackwell AGU Digital Library</source><source>Wiley Online Library (Open Access Collection)</source><source>Alma/SFX Local Collection</source><creator>Wilford, C. R. ; Moffett, R. J. ; Rees, J. M. ; Bailey, G. J. ; Gonzalez, S. A.</creator><creatorcontrib>Wilford, C. R. ; Moffett, R. J. ; Rees, J. M. ; Bailey, G. J. ; Gonzalez, S. A.</creatorcontrib><description>Light ion concentration observations from the Arecibo incoherent scatter radar have shown regions of He+ layering in the topside ionosphere in the postmidnight hours. The He+ layering phenomenon has been observed during both solar maximum and solar minimum conditions. During solar maximum the layer is well defined, giving maximum relative abundances of over 50%. The observational results also show regions of He+ dominance in the topside ionosphere during solar maximum in the height range 750–1200 km. During solar minimum the magnitude of the layer is less, giving a maximum relative abundance of only ∼20%; however, the layer is still a well‐defined feature. The coupled thermosphere‐ionosphere‐plasmasphere (CTIP) model is shown to model accurately the He+ layer and the regions of He+ dominance, provided that the modeled temperature profiles are normalized to the observed values. This study serves to further highlight the importance of helium ions in the topside ionosphere, particularly during solar maximum nighttime conditions.</description><identifier>ISSN: 0148-0227</identifier><identifier>EISSN: 2156-2202</identifier><identifier>DOI: 10.1029/2003JA009940</identifier><language>eng</language><publisher>Washington, DC: Blackwell Publishing Ltd</publisher><subject>CTIP model ; Earth, ocean, space ; Exact sciences and technology ; External geophysics ; helium ions ; Physics of the high neutral atmosphere ; Physics of the ionosphere ; Physics of the magnetosphere ; topside ionosphere</subject><ispartof>Journal of Geophysical Research. A. Space Physics, 2003-12, Vol.108 (A12), p.SIA17.1-n/a</ispartof><rights>Copyright 2003 by the American Geophysical Union.</rights><rights>2004 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c3782-849cce053f2beaba7dd1f01d127c86210a1de7d3f74807086375071e8531e8ab3</citedby><cites>FETCH-LOGICAL-c3782-849cce053f2beaba7dd1f01d127c86210a1de7d3f74807086375071e8531e8ab3</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%2F2003JA009940$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1029%2F2003JA009940$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,780,784,1417,1433,11514,27924,27925,45574,45575,46409,46468,46833,46892</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=15437169$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Wilford, C. R.</creatorcontrib><creatorcontrib>Moffett, R. J.</creatorcontrib><creatorcontrib>Rees, J. M.</creatorcontrib><creatorcontrib>Bailey, G. J.</creatorcontrib><creatorcontrib>Gonzalez, S. A.</creatorcontrib><title>Comparison of the He+ layer observed over Arecibo during solar maximum and solar minimum with CTIP model results</title><title>Journal of Geophysical Research. A. Space Physics</title><addtitle>J. Geophys. Res</addtitle><description>Light ion concentration observations from the Arecibo incoherent scatter radar have shown regions of He+ layering in the topside ionosphere in the postmidnight hours. The He+ layering phenomenon has been observed during both solar maximum and solar minimum conditions. During solar maximum the layer is well defined, giving maximum relative abundances of over 50%. The observational results also show regions of He+ dominance in the topside ionosphere during solar maximum in the height range 750–1200 km. During solar minimum the magnitude of the layer is less, giving a maximum relative abundance of only ∼20%; however, the layer is still a well‐defined feature. The coupled thermosphere‐ionosphere‐plasmasphere (CTIP) model is shown to model accurately the He+ layer and the regions of He+ dominance, provided that the modeled temperature profiles are normalized to the observed values. This study serves to further highlight the importance of helium ions in the topside ionosphere, particularly during solar maximum nighttime conditions.</description><subject>CTIP model</subject><subject>Earth, ocean, space</subject><subject>Exact sciences and technology</subject><subject>External geophysics</subject><subject>helium ions</subject><subject>Physics of the high neutral atmosphere</subject><subject>Physics of the ionosphere</subject><subject>Physics of the magnetosphere</subject><subject>topside ionosphere</subject><issn>0148-0227</issn><issn>2156-2202</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2003</creationdate><recordtype>article</recordtype><recordid>eNp9UcFu1DAQtRBIrJbe-ABf4AKBsZ3EyXG1YrddVaXAVuVmOfGEGpx4aydt9-9xuwV6Yg4zmqf3njRvCHnN4AMDXn_kAGKzAKjrHJ6RGWdFmXEO_DmZAcurDDiXL8lRjD8hVV6UObAZ2S19v9PBRj9Q39HxCukxvqNO7zFQ30QMN2iov0nbImBrG0_NFOzwg0bvdKC9vrP91FM9mD-IHR6QWzte0eX25Jz23qCjAePkxviKvOi0i3j0OOfkYvVpuzzOTj-vT5aL06wVsuJZlddti1CIjjeoGy2NYR0ww7hsq5Iz0MygNKKTeQUSqlLIAiTDqhCp6UbMyduD7y746wnjqHobW3ROD-inqLisWFmmzObk_YHYBh9jwE7tgu112CsG6j5Z9TTZRH_z6Ktjq10X9NDa-E9T5EKysk48ceDdWof7_3qqzfrrgsn0oKTKDiobR7z7q9LhlyplOlFdnq3VarX9wr5fflMb8RsbFpW8</recordid><startdate>200312</startdate><enddate>200312</enddate><creator>Wilford, C. R.</creator><creator>Moffett, R. J.</creator><creator>Rees, J. M.</creator><creator>Bailey, G. J.</creator><creator>Gonzalez, S. A.</creator><general>Blackwell Publishing Ltd</general><general>American Geophysical Union</general><scope>BSCLL</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope></search><sort><creationdate>200312</creationdate><title>Comparison of the He+ layer observed over Arecibo during solar maximum and solar minimum with CTIP model results</title><author>Wilford, C. R. ; Moffett, R. J. ; Rees, J. M. ; Bailey, G. J. ; Gonzalez, S. A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3782-849cce053f2beaba7dd1f01d127c86210a1de7d3f74807086375071e8531e8ab3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2003</creationdate><topic>CTIP model</topic><topic>Earth, ocean, space</topic><topic>Exact sciences and technology</topic><topic>External geophysics</topic><topic>helium ions</topic><topic>Physics of the high neutral atmosphere</topic><topic>Physics of the ionosphere</topic><topic>Physics of the magnetosphere</topic><topic>topside ionosphere</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Wilford, C. R.</creatorcontrib><creatorcontrib>Moffett, R. J.</creatorcontrib><creatorcontrib>Rees, J. M.</creatorcontrib><creatorcontrib>Bailey, G. J.</creatorcontrib><creatorcontrib>Gonzalez, S. A.</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of Geophysical Research. A. Space Physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wilford, C. R.</au><au>Moffett, R. J.</au><au>Rees, J. M.</au><au>Bailey, G. J.</au><au>Gonzalez, S. A.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Comparison of the He+ layer observed over Arecibo during solar maximum and solar minimum with CTIP model results</atitle><jtitle>Journal of Geophysical Research. A. Space Physics</jtitle><addtitle>J. Geophys. Res</addtitle><date>2003-12</date><risdate>2003</risdate><volume>108</volume><issue>A12</issue><spage>SIA17.1</spage><epage>n/a</epage><pages>SIA17.1-n/a</pages><issn>0148-0227</issn><eissn>2156-2202</eissn><abstract>Light ion concentration observations from the Arecibo incoherent scatter radar have shown regions of He+ layering in the topside ionosphere in the postmidnight hours. The He+ layering phenomenon has been observed during both solar maximum and solar minimum conditions. During solar maximum the layer is well defined, giving maximum relative abundances of over 50%. The observational results also show regions of He+ dominance in the topside ionosphere during solar maximum in the height range 750–1200 km. During solar minimum the magnitude of the layer is less, giving a maximum relative abundance of only ∼20%; however, the layer is still a well‐defined feature. The coupled thermosphere‐ionosphere‐plasmasphere (CTIP) model is shown to model accurately the He+ layer and the regions of He+ dominance, provided that the modeled temperature profiles are normalized to the observed values. This study serves to further highlight the importance of helium ions in the topside ionosphere, particularly during solar maximum nighttime conditions.</abstract><cop>Washington, DC</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1029/2003JA009940</doi><tpages>9</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0148-0227 |
| ispartof | Journal of Geophysical Research. A. Space Physics, 2003-12, Vol.108 (A12), p.SIA17.1-n/a |
| issn | 0148-0227 2156-2202 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_27816600 |
| source | Wiley Journals; Wiley-Blackwell AGU Digital Library; Wiley Online Library (Open Access Collection); Alma/SFX Local Collection |
| subjects | CTIP model Earth, ocean, space Exact sciences and technology External geophysics helium ions Physics of the high neutral atmosphere Physics of the ionosphere Physics of the magnetosphere topside ionosphere |
| title | Comparison of the He+ layer observed over Arecibo during solar maximum and solar minimum with CTIP model results |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-04T15%3A12%3A38IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Comparison%20of%20the%20He+%20layer%20observed%20over%20Arecibo%20during%20solar%20maximum%20and%20solar%20minimum%20with%20CTIP%20model%20results&rft.jtitle=Journal%20of%20Geophysical%20Research.%20A.%20Space%20Physics&rft.au=Wilford,%20C.%20R.&rft.date=2003-12&rft.volume=108&rft.issue=A12&rft.spage=SIA17.1&rft.epage=n/a&rft.pages=SIA17.1-n/a&rft.issn=0148-0227&rft.eissn=2156-2202&rft_id=info:doi/10.1029/2003JA009940&rft_dat=%3Cproquest_cross%3E27816600%3C/proquest_cross%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=27816600&rft_id=info:pmid/&rfr_iscdi=true |