engleski

Orographic effects on meteorological fields over the Adriatic from different models

Two meteorological models at different resolutions are used for the investigation of the influence of orography on meteorological fields above the Adriatic. The analysis is performed on the fields from the regional LAMI model, given at 7 km horizontal resolution every 3 hours, and the global ECMWF model, at 0.5 deg every 6 hours, which cover the DART period (Oct/2005 - Sep/2006). The ECMWF orography can be considered as a smoothed version of the LAMI orography. Hence the differences between LAMI and ECMWF fields should enable the effects of orography to be more clearly seen. The analysis is focused on three typical weather situations over the Adriatic, namely the bora, sirocco and ethesian winds. The mean differences for each weather situation are examined over the entire period to find persistent features. Subsequently, the analysis is performed on particular episodes which are chosen as either being characteristic of each of the weather situations or are concurrent with DART IOPs.

Adriatic Sea; orographic effects; numerical models

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