Improving initial conditions in a convection-permitting LAM (CROSBI ID 681926)
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Podaci o odgovornosti
Keresturi, Endi ; Wang, Yong ; Meier, Florian ; Weidle, Florian ; Wittmann, Christoph
engleski
Improving initial conditions in a convection-permitting LAM
One of the main challenges presented by a Limited Area Model (LAM) concerns the limited capacity for its initial conditions to correctly represent large-scale flow. In the present work, a Jk blending method is tested for improving representation of large-scale information. Our approach involves employing Jk blending within a framework of 3D-Var data assimilation. This method is implemented in AROME model and is compared to the standard 3D-Var approach. The comparison shows that the Jk method gives a more skillful model, especially for upper-air variables, surface pressure and precipitation.
Blending, initial conditions, Jk, limited-area model, 3D-Var
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Podaci o prilogu
1-1.
2018.
objavljeno
Podaci o matičnoj publikaciji
Podaci o skupu
Meteorološki izazovi 6
predavanje
16.11.2018-17.11.2018
Zagreb, Hrvatska