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"Comparison of the Prandtl model with K(z) and non-zero f with Doppler sodar observations" (CROSBI ID 528333)

Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija

Kavčič, Iva ; Grisogono, Branko ; Renfrew, Ian A. ; Anderson, Philip S. ; Večenaj, Željko ; Stiperski, Ivana "Comparison of the Prandtl model with K(z) and non-zero f with Doppler sodar observations" // 29th International Conference on Alpine Meteorology - Extended Abstracts. Météo-France, 2007. str. 597-600-x

Podaci o odgovornosti

Kavčič, Iva ; Grisogono, Branko ; Renfrew, Ian A. ; Anderson, Philip S. ; Večenaj, Željko ; Stiperski, Ivana

engleski

"Comparison of the Prandtl model with K(z) and non-zero f with Doppler sodar observations"

We present the analytical and numerical solutions for (U, V) depending on (z, t) in the katabatic flow, where U and V are the downslope and cross-slope wind components. The solutions for (U, V) from the recently extended analytical 1D Prandtl model are verified against observations (the 15-min averages) from a novel autonomous Doppler sodar wind profiling system in Antarctica. Two cases of the wintertime, primarily katabatically driven, flows with the different stability values are investigated. The analytical and numerical model parameters are calculated from the Doppler sodar and AWS (automatic weather station) data. Observations of the downslope component are generally better described by the model solutions, especially in the case of the stronger stability. The model solutions for V agree qualitatively with the observations, but are not accurate enough in determining the height and the speed of the V maximum. Therefore, further improvements of the Prandtl model will be amendable as well as recommendations for a better parameterization of katabatic flows in large-scale numerical models.

Stable boundary layer; Prandtl model; Doppler sodar data

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Podaci o prilogu

597-600-x.

2007.

objavljeno

Podaci o matičnoj publikaciji

29th International Conference on Alpine Meteorology - Extended Abstracts

Météo-France

Podaci o skupu

29th International Conference on Alpine Meteorology

poster

04.06.2007-08.06.2007

Chambéry, Francuska

Povezanost rada

Geologija, Matematika

Poveznice