A nudging scheme to assimilate brightness temperature in a meteorological model: impact on African mesoscale convective systems representation (Articolo in rivista)

Type

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

Label

• A nudging scheme to assimilate brightness temperature in a meteorological model: impact on African mesoscale convective systems representation (Articolo in rivista) (literal)

Anno

• 2010-01-01T00:00:00+01:00 (literal)

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

• 10.1002/qj.549 (literal)

Alternative label

• E. Orlandi (a)(b); F. Fierli (a); S. Davolio (a); A. Buzzi (a); O. Drofa (a) (2010)
  A nudging scheme to assimilate brightness temperature in a meteorological model: impact on African mesoscale convective systems representation
  in Quarterly Journal of the Royal Meteorological Society
  (literal)

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

• E. Orlandi (a)(b); F. Fierli (a); S. Davolio (a); A. Buzzi (a); O. Drofa (a) (literal)

Pagina inizio

• 462 (literal)

Pagina fine

• 474 (literal)

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

• 136 (literal)

Rivista

• Quarterly Journal of the Royal Meteorological Society (Rivista)

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

• 647 (literal)

Note

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

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

• (a) Istituto di Scienze dell'Atmosfera e del Clima, ISAC-CNR, Bologna, Italy (b) Universitá degli Studi di Ferrara, Ferrara, Italy (literal)

Titolo

• A nudging scheme to assimilate brightness temperature in a meteorological model: impact on African mesoscale convective systems representation (literal)

Abstract

• The study presents the implementation of a nudging procedure in a mesoscale meteorological model, and its evaluation in improving the representation of mesoscale convective systems in the region of West Africa. The generation and development of convection are related to processes with different spatial scales, making it often difficult for meteorological models to reproduce their dynamics. The assimilation approachis based on the continuous assimilation of METEOSAT infrared brightness temperatures within the model in order to trigger convection, where observations show the presence of large convective systems. The nudging also inhibits convection, when the model reproduces unrealistic convective precipitation and coherently modifies the dynamical fields. Model sensitivity to the nudging scheme has been tested to evaluate the role of the forcing term. The nudging improves the geographical distribution and time evolution of mesoscale convective systems reproduced by the model; the impact of assimilation is positive up to 13h after the end of the nudging period. It is also shown that the nudging improves the simulated amount and spatial distribution of precipitation. Finally, the assimilation is performed throughout the entire simulation, showing how the proposed approach can be used to improve meteorological analyses interms of convective activity and rainfall. (literal)

Prodotto di

• Institute of atmospheric sciences and climate (ISAC) (Istituto)
• Meteorologia dinamica (TA.P06.017.003) (Modulo)

Autore CNR

• SILVIO DAVOLIO (Persona)
• ANDREA BUZZI (Persona)
• Emiliano ORLANDI (Unità di personale esterno)
• FEDERICO FIERLI (Unità di personale interno)
• OXANA DROFA (Unità di personale interno)

Incoming links:

Prodotto

• Institute of atmospheric sciences and climate (ISAC) (Istituto)
• Meteorologia dinamica (TA.P06.017.003) (Modulo)

Autore CNR di

• ANDREA BUZZI (Persona)
• OXANA DROFA (Unità di personale interno)
• SILVIO DAVOLIO (Persona)
• FEDERICO FIERLI (Unità di personale interno)
• Emiliano ORLANDI (Unità di personale esterno)

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

• Quarterly Journal of the Royal Meteorological Society (Rivista)