engleski

Near-surface wind climatology over the eastern Adriatic coast in an ensemble of RCM simulations

The eastern Adriatic coast is characterized by the complex coastline, strong topographic gradients and specific wind regime. The most famous typical winds along the Adriatic coast are bora and sirocco (mostly during the wintertime) and sea/land breezes (dominantly in the warm part of the year) as a part of the regional Mediterranean wind system. This represents excellent test area for the latest generation of the regional climate models (RCM) applied for the European domain. In this study, near-surface (i.e. 10 m) wind simulated by six RCMs (CLMcom- CCLM4-8-17, DMI-HIRHAM5, IPSL-INERIS- WRF331F, KNMI-RACMO22E, SMHI- RCA4, DHMZ-RegCM4) from the EURO-CORDEX initiative are compared against surface station observations and forcing ERA- Interim reanalysis for the period 1996-2008. Our analysis reveals strong sensitivity of the simulated wind flow and wind pattern to the RCM horizontal resolution (12.5 km vs. 50 km). Additionally, the skill of the RCMs (among others measured by e.g. Brier and Perkins skill scores) in reproducing the observed flows is a function of both season and location analysed. Several methodological aspects related to the interpolation approaches when comparing RCMs and observations (or RCMs at two different resolutions) are also discussed.

bora; RCM; sirocco

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