Large-eddy simulation of the planetary boundary layer under baroclinic conditions during daytime and sunset turbulence (Articolo in rivista)

Type
Label
  • Large-eddy simulation of the planetary boundary layer under baroclinic conditions during daytime and sunset turbulence (Articolo in rivista) (literal)
Anno
  • 2013-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1002/met.1284 (literal)
Alternative label
  • Umberto Rizza; Mario M. Miglietta; Otavio C. Acevedo; Vagner Anabor; Gervasio A. Degrazia; Antonio G. Goulart; Hans R. Zimmerman (2013)
    Large-eddy simulation of the planetary boundary layer under baroclinic conditions during daytime and sunset turbulence
    in Meteorological applications (Online)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Umberto Rizza; Mario M. Miglietta; Otavio C. Acevedo; Vagner Anabor; Gervasio A. Degrazia; Antonio G. Goulart; Hans R. Zimmerman (literal)
Pagina inizio
  • 56 (literal)
Pagina fine
  • 71 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#altreInformazioni
  • pubblicato per la prima volta online nel 2012 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 20 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 16 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 1 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • ISAC-CNR, Istituto di Scienze dell'Atmosfera e del Clima, Dipartimento Terra e Ambiente, Consiglio Nazionale delle Ricerche, Lecce, Italy ISE-CNR, Istituto per lo Studio degli Ecosistemi, Dipartimento Terra e Ambiente, Consiglio Nazionale delle Ricerche, Pallanza, Italy UFSM, Universidade Federal de Santa Maria, Departamento de Fisica, Santa Maria, Brazil UNIPAMPA, Universidade Federal do Pampa, Departamento de Tecnologia, Alegrete, Brazil (literal)
Titolo
  • Large-eddy simulation of the planetary boundary layer under baroclinic conditions during daytime and sunset turbulence (literal)
Abstract
  • This study investigates the Large-Eddy Simulation (LES) technique in the diurnally varying atmospheric boundary layer in conditions of realistic environmental forcing. The initial settings of meteorological fields are obtained by 'ingesting' into the LES domain the vertical profiles of wind, temperature and specific humidity provided by the meteorological model WRF. The surface values of potential temperature and specific humidity from the WRF simulation are used as forcing parameters for the LES runs. These forcing parameters are updated during the runs every 1 h. A methodology is developed to derive the components of the geostrophic wind profile that is used in LES to model the largescale horizontal mean pressure gradient and treated as an external forcing. This methodology involves the meteorological model WRF. In this context, the WRF model has a dual task: (1) providing realistic atmospheric environmental forcings to LES and (2) providing a very large dataset to investigate possible improvements of the LES setting to make the numerical prediction more realistic. The principal results obtained by the present study is that the use of geostrophic wind shear profiles improves the prognostic capability of LES in reproducing the wind field pattern in the planetary boundary layer, this is an important parameter for the proper description of the decay of the turbulent kinetic energy at sunset. (literal)
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