{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1360021390749665536.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.3390/atmos14081302"}},{"identifier":{"@type":"URI","@value":"https://www.mdpi.com/2073-4433/14/8/1302/pdf"}}],"resourceType":"学術雑誌論文(journal article)","dc:title":[{"@value":"Intriguing Aspects of Polar-to-Tropical Mesospheric Teleconnections during the 2018 SSW: A Meteor Radar Network Study"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:p>Using a network of meteor radar observations, observational evidence of polar-to-tropical mesospheric coupling during the 2018 major sudden stratosphere warming (SSW) event in the northern hemisphere is presented. In the tropical lower mesosphere, a maximum zonal wind reversal (−24 m/s) is noted and compared with that identified in the extra-tropical regions. Moreover, a time delay in the wind reversal between the tropical/polar stations and the mid-latitudes is detected. A wide spectrum of waves with periods of 2 to 16 days and 30–60 days were observed. The wind reversal in the mesosphere is due to the propagation of dominant intra-seasonal oscillations (ISOs) of 30–60 days and the presence and superposition of 8-day period planetary waves (PWs). The ISO phase propagation is observed from high to low latitudes (60° N to 20° N) in contrast to the 8-day PW phase propagation, indicating the change in the meridional propagation of winds during SSW, hence the change in the meridional circulation. The superposition of dominant ISOs and weak 8-day PWs could be responsible for the delay of the wind reversal in the tropical mesosphere. Therefore, this study has strong implications for understanding the reversed (polar to tropical) mesospheric meridional circulation by considering the ISOs during SSW.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1380021390749665673","@type":"Researcher","foaf:name":[{"@value":"Sunkara Eswaraiah"}],"jpcoar:affiliationName":[{"@value":"Research Center for Climate Sciences, Pusan National University, Busan 46241, Republic of Korea"},{"@value":"Centre for Atmospheric and Space Science, Mohan Babu University, Tirupati 517102, India"}]},{"@id":"https://cir.nii.ac.jp/crid/1380021390749665282","@type":"Researcher","foaf:name":[{"@value":"Andrey V. Koval"}],"jpcoar:affiliationName":[{"@value":"Atmospheric Physics Department, Saint Petersburg State University, 198504 Saint Petersburg, Russia"}]},{"@id":"https://cir.nii.ac.jp/crid/1380021390749665664","@type":"Researcher","foaf:name":[{"@value":"Madineni Venkat Ratnam"}],"jpcoar:affiliationName":[{"@value":"National Atmospheric Research Laboratory, Tirupati 517502, India"}]},{"@id":"https://cir.nii.ac.jp/crid/1380021390749665669","@type":"Researcher","foaf:name":[{"@value":"Kondapalli Niranjan Kumar"}],"jpcoar:affiliationName":[{"@value":"National Centre for Medium Range Weather Forecasting, Noida 201301, India"}]},{"@id":"https://cir.nii.ac.jp/crid/1380021390749665545","@type":"Researcher","foaf:name":[{"@value":"Christoph Jacobi"}],"jpcoar:affiliationName":[{"@value":"Institute for Meteorology, Leipzig University, 04103 Leipzig, Germany"}]},{"@id":"https://cir.nii.ac.jp/crid/1380021390749665577","@type":"Researcher","foaf:name":[{"@value":"Eugeny Merzlyakov"}],"jpcoar:affiliationName":[{"@value":"Institute for Experimental Meteorology, Science and Production Association “Typhoon”, 249030 Obninsk, Russia"},{"@value":"Radiophysics Department, Kazan (Volga Region) Federal University, 420008 Kazan, Russia"}]},{"@id":"https://cir.nii.ac.jp/crid/1380021390749665575","@type":"Researcher","foaf:name":[{"@value":"Nicholas J. Mitchell"}],"jpcoar:affiliationName":[{"@value":"Department of Electronic & Electrical Engineering, University of Bath, Bath BA2 7AY, UK"}]},{"@id":"https://cir.nii.ac.jp/crid/1380021390749665676","@type":"Researcher","foaf:name":[{"@value":"Young-Sil Kwak"}],"jpcoar:affiliationName":[{"@value":"Space Science Division, Korea Astronomy and Space Science Institute, Daejeon 34055, Republic of Korea"}]},{"@id":"https://cir.nii.ac.jp/crid/1380021390749665568","@type":"Researcher","foaf:name":[{"@value":"Kyong-Hwan Seo"}],"jpcoar:affiliationName":[{"@value":"Research Center for Climate Sciences, Pusan National University, Busan 46241, Republic of Korea"},{"@value":"Department of Atmospheric Sciences, Pusan National University, Busan 46241, Republic of Korea"}]},{"@id":"https://cir.nii.ac.jp/crid/1380021390749665567","@type":"Researcher","foaf:name":[{"@value":"Yong-Ha Kim"}],"jpcoar:affiliationName":[{"@value":"Department of Astronomy and Space Science, Chungnam National University, Daejeon 34134, Republic of Korea"}]},{"@id":"https://cir.nii.ac.jp/crid/1380021390749665538","@type":"Researcher","foaf:name":[{"@value":"Sarangam Vijaya Bhaskara Rao"}],"jpcoar:affiliationName":[{"@value":"Department of Physics, Sri Venkateswara University, Tirupati 517502, India"}]},{"@id":"https://cir.nii.ac.jp/crid/1380021390749665422","@type":"Researcher","foaf:name":[{"@value":"Chalachew Kindie Mengist"}],"jpcoar:affiliationName":[{"@value":"Research Center for Climate Sciences, Pusan National University, Busan 46241, Republic of Korea"}]},{"@id":"https://cir.nii.ac.jp/crid/1380021390749665543","@type":"Researcher","foaf:name":[{"@value":"Gasti Venkata Chalapathi"}],"jpcoar:affiliationName":[{"@value":"Department of Physics, Government Degree College, Anantapur 515001, India"}]},{"@id":"https://cir.nii.ac.jp/crid/1420001326224168320","@type":"Researcher","personIdentifier":[{"@type":"KAKEN_RESEARCHERS","@value":"70589639"},{"@type":"NRID","@value":"1000070589639"},{"@type":"NRID","@value":"9000023031296"},{"@type":"NRID","@value":"9000016883864"},{"@type":"NRID","@value":"9000265539303"},{"@type":"NRID","@value":"9000024362611"},{"@type":"NRID","@value":"9000016907804"},{"@type":"NRID","@value":"9000024359744"},{"@type":"NRID","@value":"9000337100867"},{"@type":"NRID","@value":"9000025009983"},{"@type":"NRID","@value":"9000288831597"},{"@type":"NRID","@value":"9000018699292"},{"@type":"NRID","@value":"9000242385414"},{"@type":"RESEARCHMAP","@value":"https://researchmap.jp/huixin"}],"foaf:name":[{"@value":"Huixin Liu"}],"jpcoar:affiliationName":[{"@value":"Department of Earth and Planetary Sciences, Kyushu University, Fukuoka 819-0395, Japan"}]}],"publication":{"publicationIdentifier":[{"@type":"EISSN","@value":"20734433"}],"prism:publicationName":[{"@value":"Atmosphere"}],"dc:publisher":[{"@value":"MDPI AG"}],"prism:publicationDate":"2023-08-17","prism:volume":"14","prism:number":"8","prism:startingPage":"1302"},"reviewed":"false","dcterms:accessRights":"http://purl.org/coar/access_right/c_abf2","dc:rights":["https://creativecommons.org/licenses/by/4.0/"],"url":[{"@id":"https://www.mdpi.com/2073-4433/14/8/1302/pdf"}],"createdAt":"2023-08-17","modifiedAt":"2025-10-10","foaf:topic":[{"@id":"https://cir.nii.ac.jp/all?q=intra-seasonal%20oscillations%20(ISOs)","dc:title":"intra-seasonal oscillations (ISOs)"},{"@id":"https://cir.nii.ac.jp/all?q=sudden%20stratospheric%20warming%20(SSW)","dc:title":"sudden stratospheric warming (SSW)"},{"@id":"https://cir.nii.ac.jp/all?q=planetary%20waves%20(PWs)","dc:title":"planetary waves (PWs)"},{"@id":"https://cir.nii.ac.jp/all?q=sudden%20stratospheric%20warming%20(SSW);%20tropical%E2%80%93extra-tropical%20mesosphere;%20meteor%20radar%20network;%20mesosphere%20wind%20reversal;%20intra-seasonal%20oscillations%20(ISOs);%20planetary%20waves%20(PWs);%20meridional%20circulation","dc:title":"sudden stratospheric warming (SSW); tropical–extra-tropical mesosphere; meteor radar network; mesosphere wind reversal; intra-seasonal oscillations (ISOs); planetary waves (PWs); meridional circulation"},{"@id":"https://cir.nii.ac.jp/all?q=meteor%20radar%20network","dc:title":"meteor radar network"},{"@id":"https://cir.nii.ac.jp/all?q=Meteorology.%20Climatology","dc:title":"Meteorology. 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