{"@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/1363951795344734080.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1029/97gl03094"}},{"identifier":{"@type":"URI","@value":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2F97GL03094"}},{"identifier":{"@type":"URI","@value":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/97GL03094"}}],"dc:title":[{"@value":"A formulation of a wave‐activity flux for stationary Rossby waves on a zonally varying basic flow"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:p>A new formulation of an approximate conservation relation is proposed for stationary Rossby waves on a zonally varying basic flow, utilizing that <jats:italic>A</jats:italic> (proportional to wave enstrophy) and ε (proportional to wave energy) are both related to the wave activity pseudomomentum. For stationary Rossby waves, it is shown in the limit of a small‐amplitude, plane wave on a slowly varying, unforced non‐zonal flow that a particular linear combination of <jats:italic>A</jats:italic> and ε, namely, <jats:italic>M</jats:italic> ≡ (<jats:italic>A</jats:italic> + ε)/2, is independent of the wave phase, even if unaveraged, and is conserved under steady, unforced and nondissipative conditions. It is also shown that the three‐dimensional flux of <jats:italic>M</jats:italic> is parallel to the local group velocity in the WKB limit. The flux could be a useful diagnostic tool, as shown in an example that presents a “snapshot” of the three‐dimensional propagation of a stationary Rossby wavetrain in the real atmosphere. Our conservation relation is a generalization of that for stationary Rossby waves on a zonally‐uniform basic flow derived by Plumb.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1383951795344734080","@type":"Researcher","foaf:name":[{"@value":"Koutarou Takaya"}]},{"@id":"https://cir.nii.ac.jp/crid/1383951795344734081","@type":"Researcher","foaf:name":[{"@value":"Hisashi Nakamura"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"00948276"},{"@type":"EISSN","@value":"19448007"}],"prism:publicationName":[{"@value":"Geophysical Research Letters"}],"dc:publisher":[{"@value":"American Geophysical Union (AGU)"}],"prism:publicationDate":"1997-12","prism:volume":"24","prism:number":"23","prism:startingPage":"2985","prism:endingPage":"2988"},"reviewed":"false","dcterms:accessRights":"http://purl.org/coar/access_right/c_abf2","dc:rights":["http://onlinelibrary.wiley.com/termsAndConditions#vor"],"url":[{"@id":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2F97GL03094"},{"@id":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/97GL03094"}],"createdAt":"2004-02-04","modifiedAt":"2023-09-23","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1050301927790394240","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Role of Weddell Sea ice in South Atlantic atmospheric variability"}]},{"@id":"https://cir.nii.ac.jp/crid/1050306506454166656","@type":"Article","resourceType":"学術雑誌論文(journal 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