Momentum flux characteristics of vertically propagating gravity waves

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dc.contributor.authorNyassor, Prosper Kwamla
dc.contributor.authorWrasse, Cristiano Max
dc.contributor.authorPaulino, Igo
dc.contributor.authorYigit, Erdal
dc.contributor.authorTsali-Brown, Vera Yesutor
dc.contributor.authorBuriti, Ricardo Arlen
dc.contributor.authorFigueiredo, Cosme Alexandre Oliveira Barros
dc.contributor.authorGiongo, Gabriel Augusto
dc.contributor.authorEgito, Fabio
dc.contributor.authorAdebayo, Oluwasegun Micheal
dc.contributor.authorTakahashi, Hisao
dc.contributor.authorGobbi, Delano
dc.date.accessioned2025-08-18T20:41:43Z
dc.date.available2025-08-18T20:41:43Z
dc.date.issued22025
dc.description.abstractMomentum flux and propagation dynamics of two vertically propagating atmospheric gravity waves (GWs) are studied using observations at São João do Cariri (7.40° S, 36.31° W), Brazil, from co-located pho- tometer, all-sky imager, and meteor radar instruments. Time series of the atomic oxygen green line (OI 557.7 nm), molecular oxygen (O2 (0–1)), sodium D-line (NaD), and hydroxyl (OH (6–2)) airglow intensity variations mea- sured by the photometer were used to investigate the vertical characteristics and vertical phase progression of the GWs with similar (± 10 % of the error margin) or nearly the same (± 5 % of the error margin) period across these emission layers. The horizontal parameters of the same GWs were determined from the OH airglow im- ages, whereas the intrinsic parameters of the horizontal and vertical components of the GWs were estimated with the aid of the observed winds. Using the phase of the GWs at each emission layer, the characteristics of the phase progression exhibited near-vertical propagation under a duct background propagation condition. This indicates that the duct contributes significantly to the observed near-vertical phase propagation. The GW mo- mentum flux and potential energy were estimated using the rotational temperatures of OH and O2, revealing that the time series of momentum fluxes and potential energies are higher in the O2 emission band than in the OH band, indicating a transfer of momentum and energy across OH to the O2 altitude. These results reveal the effect of a duct on vertically propagating GWs and the associated momentum flux and potential energy transfer from the lower to the upper altitudes in the mesosphere.
dc.description.physical30 p.
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.uriCNPq (309981/2023-9, 140401/2021-0, 161901/2022-0, and 310927/2020-0) CAPES (88887.871779/2023-00) FAPESP (2021/07491-6 and 2018/10679-4)
dc.format.mimetypePDF
dc.identifier.affiliationUniversidade do Vale do Paraíba
dc.identifier.affiliationInstituto Nacional de Pesquisas Espaciais
dc.identifier.affiliationUniversidade Federal de Campina Grande
dc.identifier.affiliationGeorge Mason University
dc.identifier.bibliographicCitationNYASSOR, P. K. et al. Momentum flux characteristics of vertically propagating gravity waves. Atmospheric Chemistry Physics, v. 25, p. 4053-4082, 2025. Disponível em: 10.5194/acp-25-4053-2025.
dc.identifier.doi10.5194/acp-25-4053-2025
dc.identifier.urihttps://repositorio.univap.br/handle/123456789/1027
dc.language.isoen_US
dc.publisherEuropean Geosciences Union
dc.rights.holderAtmospheric Chemistry Physics
dc.subject.keywordGravity waves
dc.titleMomentum flux characteristics of vertically propagating gravity waves
dc.typeArtigos de Periódicos

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