Vertical velocities and available potential energy generated by landscape variability - Theory (Articolo in rivista)

Type

• Prodotto della ricerca (Classe)
• Articolo in rivista (Classe)

Label

• Vertical velocities and available potential energy generated by landscape variability - Theory (Articolo in rivista) (literal)

Anno

• 2008-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1175/2007JAMC1539.1 (literal)

Alternative label

• Baldi M., G.A. Dalu, R.A. Pielke Sr (2008)
  Vertical velocities and available potential energy generated by landscape variability - Theory
  in Journal of applied meteorology and climatology
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Baldi M., G.A. Dalu, R.A. Pielke Sr (literal)

Pagina inizio

• 397 (literal)

Pagina fine

• 410 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 47 (literal)

Rivista

• Journal of applied meteorology and climatology (Rivista)

Note

• ISI Web of Science (WOS) (literal)
• Scopu (literal)
• Google Scholar (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, Colorado (literal)

Titolo

• Vertical velocities and available potential energy generated by landscape variability - Theory (literal)

Abstract

• It is shown that landscape variability decreases the temperature in the surface layer when, through mesoscale flow, cool air intrudes over warm patches, lifting warm air and weakening the static stability of the upper part of the planetary boundary layer. This mechanism generates regions of upward vertical motion and a sizable amount of available potential energy and can make the environment of the lower troposphere more favorable to cloud formation. This process is enhanced by light ambient wind through the generation of trapped propagating waves, which penetrate into the midtropospheric levels, transporting upward the thermal perturbations and weakening the static stability around the top of the boundary layer. At moderate ambient wind speeds, the presence of surface roughness changes strengthens the wave activity, further favoring the vertical transport of the thermal perturbations. When the intensity of the ambient wind is larger than 5 m s?1, the vertical velocities induced by the surface roughness changes prevail over those induced by the diabatic flux changes. The analysis is performed using a linear theory in which the mesoscale dynamics are forced by the diurnal diabatic sensible heat flux and by the surface stress. Results are shown as a function of ambient flow intensity and of the wavelength of a sinusoidal landscape variability. (literal)

Prodotto di

• Gestione delle risorse del territorio mediante tecnologie informatiche innovative (AG.P04.028.001) (Modulo)
• Institute for biometeorology (IBIMET) (Istituto)

Autore CNR

• MARINA BALDI (Unità di personale interno)
• GIOVANNANGELO DALU (Unità di personale interno)

Incoming links:

Prodotto

• Institute for biometeorology (IBIMET) (Istituto)
• Gestione delle risorse del territorio mediante tecnologie informatiche innovative (AG.P04.028.001) (Modulo)

Autore CNR di

• GIOVANNANGELO DALU (Unità di personale interno)
• MARINA BALDI (Unità di personale interno)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Journal of applied meteorology and climatology (Rivista)