The action of high and steep mountains on baroclinic instability and Alpine cyclogenesis

SPERANZA, Antonio; Fantini, M.; Buzzi, A.

doi:10.1007/BF02258477

CAMPUS è l'Archivio istituzionale delle pubblicazioni scientifiche dell’Università di Camerino. E’ un sistema aperto, pubblico e interoperabile che raccoglie, conserva ed espone i dati relativi alle attività e ai prodotti della ricerca dell’Ateneo con lo scopo di migliorarne la visibilità e di favorirne l’impatto a livello nazionale e internazionale.

The modification induced on unstable baroclinic waves by high and steep bottom obstacles of limited horizontal extent is studied in some, mathematically tractable, limiting cases (obstacles with vertical lateral walls blocking the horizontal motion of the fluid). The model atmosphere is assumed quasi-geostrophic and the stability problem is dealt with in the two-level approximation. The results of such analysis show that the action of the obstacle can extend to the entire baroclinic wave unless strongly non-geostrophic effects, relaxing the “stiffness” of the quasi-geostrophic flow near the obstacle, are postulated. The weaknesses of this representation with respect to the problem of Alpine lee cyclogenesis are discussed.

Scheda prodotto non validato

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Titolo:	The action of high and steep mountains on baroclinic instability and Alpine cyclogenesis
Autori:	SPERANZA, Antonio Fantini M. Buzzi A. mostra contributor esterni nascondi contributor esterni
Data di pubblicazione:	1984
Rivista:	ARCHIVES FOR METEOROLOGY GEOPHYSICS AND BIOCLIMATOLOGY SERIES A METEOROLOGY AND GEOPHYSICS
Abstract:	The modification induced on unstable baroclinic waves by high and steep bottom obstacles of limited horizontal extent is studied in some, mathematically tractable, limiting cases (obstacles with vertical lateral walls blocking the horizontal motion of the fluid). The model atmosphere is assumed quasi-geostrophic and the stability problem is dealt with in the two-level approximation. The results of such analysis show that the action of the obstacle can extend to the entire baroclinic wave unless strongly non-geostrophic effects, relaxing the “stiffness” of the quasi-geostrophic flow near the obstacle, are postulated. The weaknesses of this representation with respect to the problem of Alpine lee cyclogenesis are discussed.
Handle:	http://hdl.handle.net/11581/242751
Appare nelle tipologie:	Articolo

File in questo prodotto:

Non ci sono file associati a questo prodotto.

Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/11581/242751

Citazioni

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.