engleski

Operational use of the dynamical adaptation for high-resolution ALADIN forecast in Dinaric Alps

Results from the operational forecast using ALADIN model in extreme weather situations concerning strong flow across the Dinaric Alps will be presented. The use of less time-consuming dynamical adaptation technique leads to successful operational forecasting of strength, occurrence and spatial distribution of strong winds (bura) that frequently disturb traffic along the eastern Adriatic coast, and became the irreplaceable part of the ALADIN-Croatia operational suite. ALADIN model is used for the operational 48h forecast on two domains with 12-km and 8-km resolutions. First, 12-km resolution model is nested inside the global model ARPEGE operationally used at Meteo France, and the 8-km resolution model is nested inside the 12-km one. Output wind field from the 8-km resolution model is dynamically adapted to the 2-km resolution topography, and 2-km resolution output surface wind field is used for operational forecast. Forecast data will be compared to the measurements from automatic and SINOP stations.

bura; operational forecast; high-resolution dynamical adaptation

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