{"id":{"repo_id":"york","oai_identifier":"oai:yorkspace.library.yorku.ca:10315/38219"},"canonical_url":"https://search.dev.ndltd.org/etd/york/oai:yorkspace.library.yorku.ca:10315/38219","repository":{"repo_id":"york","name":"York University","base_url":"https://yorkspace.library.yorku.ca/oai/request"},"display":{"title":"Observations and Modelling of Thermospheric Dynamics at High Latitudes","abstract":"A strong westward wind pattern in the lower middle thermosphere at high latitudes over both hemispheres, known as a wind wall, is investigated. Since scarce information is available about this region of the atmosphere, model simulations by the WACCM-X model are employed. Model simulations, along with WINDII observations, allowed describing in a great detail most of the wind wall features, as well as its impact on other altitudes and regions. One of the main goals of this study was the determination of the atmospheric circulation pattern linked to the wind wall. Our results indicate that the wind wall is linked to the high latitude convection system. This atmospheric circulation is particularly stronger during active geomagnetic conditions, which results in the origin of the wind wall. The study reveals, the impacts of the wind wall on the dynamics and structure of the lower middle thermosphere, which are mainly a response to the complex high latitude convection system and its time variation.","abstract_html":"A strong westward wind pattern in the lower middle thermosphere at high latitudes over both hemispheres, known as a wind wall, is investigated. Since scarce information is available about this region of the atmosphere, model simulations by the WACCM-X model are employed. Model simulations, along with WINDII observations, allowed describing in a great detail most of the wind wall features, as well as its impact on other altitudes and regions. One of the main goals of this study was the determination of the atmospheric circulation pattern linked to the wind wall. Our results indicate that the wind wall is linked to the high latitude convection system. This atmospheric circulation is particularly stronger during active geomagnetic conditions, which results in the origin of the wind wall. The study reveals, the impacts of the wind wall on the dynamics and structure of the lower middle thermosphere, which are mainly a response to the complex high latitude convection system and its time variation.","abstract_has_math":false,"creators":["Schuler, Christian Wilder Barreto"],"institution":null,"degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":["Shepherd, Gordon G.","Chen, Yongsheng"],"committee_chairs":[],"committee_members":[],"year":2021,"date_issued":"2021-03-08","date_published":"2021-03-08","updated_at":"2026-07-24T06:33:55Z","subjects":["Atmospheric sciences"],"languages":["en"],"rights":["Author owns copyright, except where explicitly noted. Please contact the author directly with licensing requests."],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/10315/38219","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Shepherd, Gordon G.","Chen, Yongsheng"]},{"key":"dc:creator","label":"Author","values":["Schuler, Christian Wilder Barreto"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2021-03-08T17:27:17Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2021-03-08T17:27:17Z"]},{"key":"dc:date.issued","label":"Date","values":["2021-03-08"]},{"key":"dc:type","label":"Dc Type","values":["Electronic Thesis or Dissertation"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Atmospheric sciences"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Author owns copyright, except where explicitly noted. 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Our results indicate that the wind wall is linked to the high latitude convection system. This atmospheric circulation is particularly stronger during active geomagnetic conditions, which results in the origin of the wind wall. The study reveals, the impacts of the wind wall on the dynamics and structure of the lower middle thermosphere, which are mainly a response to the complex high latitude convection system and its time variation."]},{"key":"dc:title","label":"Title","values":["Observations and Modelling of Thermospheric Dynamics at High Latitudes"]}]}],"canonical_facts":{"dc:contributor.advisor":["Shepherd, Gordon G.","Chen, Yongsheng"],"dc:creator":["Schuler, Christian Wilder Barreto"],"dc:date.accessioned":["2021-03-08T17:27:17Z"],"dc:date.available":["2021-03-08T17:27:17Z"],"dc:date.issued":["2021-03-08"],"dc:description.abstract":["A strong westward wind pattern in the lower middle thermosphere at high latitudes over both hemispheres, known as a wind wall, is investigated. Since scarce information is available about this region of the atmosphere, model simulations by the WACCM-X model are employed. Model simulations, along with WINDII observations, allowed describing in a great detail most of the wind wall features, as well as its impact on other altitudes and regions. One of the main goals of this study was the determination of the atmospheric circulation pattern linked to the wind wall. Our results indicate that the wind wall is linked to the high latitude convection system. This atmospheric circulation is particularly stronger during active geomagnetic conditions, which results in the origin of the wind wall. The study reveals, the impacts of the wind wall on the dynamics and structure of the lower middle thermosphere, which are mainly a response to the complex high latitude convection system and its time variation."],"dc:identifier.uri":["http://hdl.handle.net/10315/38219"],"dc:language":["en"],"dc:rights":["Author owns copyright, except where explicitly noted. Please contact the author directly with licensing requests."],"dc:subject":["Atmospheric sciences"],"dc:title":["Observations and Modelling of Thermospheric Dynamics at High Latitudes"],"dc:type":["Electronic Thesis or Dissertation"]},"updated_at":"2026-07-24T06:33:55Z"}