Publicação
An empirical model for non-linear pressure drag across non-hydrostatic flow regimes with trapped lee waves
| datacite.subject.sdg | 13:Ação Climática | |
| datacite.subject.sdg | 09:Indústria, Inovação e Infraestruturas | |
| datacite.subject.sdg | 11:Cidades e Comunidades Sustentáveis | |
| dc.contributor.author | Argain, Jose Luis | |
| dc.date.accessioned | 2026-07-14T12:30:02Z | |
| dc.date.available | 2026-07-14T12:30:02Z | |
| dc.date.issued | 2026-07-07 | |
| dc.description.abstract | This study introduces a novel empirical model to estimate the total pressure drag generated by trapped lee waves (TLW) and upward-propagating internal waves in moderate-to-strong non-hydrostatic, stratified flow over a mountain ridge, as a function of flow non-linearity. The core framework is based on a two-layer atmosphere characterized by a piecewise-constant Scorer parameter, l, where a lower layer of constant l1 underlies an upper layer with l2<l1. This framework incorporates key features to extend beyond idealized assumptions, providing a reliable tool for predicting non-linear flow regimes over mountainous terrain, particularly those featuring realistic vertical profiles of the Scorer parameter. To develop the empirical formulation, a micro- to mesoscale numerical model is employed to simulate realistic, non-linear flows over steep topography. The proposed empirical model yields results that compare favorably with numerical simulations across a range of moderate-to-strong non-hydrostatic regimes, including complex cases derived from observational data and realistic vertical profiles of the Scorer parameter. The model demonstrates robust performance ranging from strongly to moderately non-hydrostatic regimes (the latter corresponding to dimensionless half-widths of approximately 5), and provides accurate drag estimates for non-linearities up to a dimensionless mountain height of approximately unity. Therefore, this empirical approach serves as a valuable foundation for improving drag parameterizations in weather prediction models, offering a computationally efficient alternative to high-resolution numerical downscaling over steep terrain. | eng |
| dc.identifier.doi | 10.3390/meteorology5030018 | |
| dc.identifier.issn | 2674-0494 | |
| dc.identifier.uri | http://hdl.handle.net/10400.1/29266 | |
| dc.language.iso | eng | |
| dc.peerreviewed | yes | |
| dc.publisher | MDPI | |
| dc.relation.ispartof | Meteorology | |
| dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | |
| dc.subject | Propagating gravity waves | |
| dc.subject | Trapped lee waves | |
| dc.subject | Resonance | |
| dc.subject | Non-hydrostatic effects | |
| dc.subject | Linear theory | |
| dc.title | An empirical model for non-linear pressure drag across non-hydrostatic flow regimes with trapped lee waves | eng |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| oaire.citation.issue | 3 | |
| oaire.citation.startPage | 18 | |
| oaire.citation.title | Meteorology | |
| oaire.citation.volume | 5 | |
| oaire.version | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |
| person.familyName | Argain | |
| person.givenName | Jose Luis | |
| person.identifier.ciencia-id | 0814-FF4B-8E43 | |
| person.identifier.orcid | 0000-0001-9140-0867 | |
| person.identifier.rid | M-5296-2013 | |
| person.identifier.scopus-author-id | 11941013900 | |
| relation.isAuthorOfPublication | 46a57ed8-c4e0-49e8-84e0-5a03276a34a1 | |
| relation.isAuthorOfPublication.latestForDiscovery | 46a57ed8-c4e0-49e8-84e0-5a03276a34a1 |