engleski

Reducing warm bias over the north-eastern Europe in a regional climate model

Large warm bias in near-surface temperature during winter was detected over north- eastern Europe in simulations with RegCM4 regional climate model when compared to observational dataset. Modifications to alleviate warm bias included reductions of the low-level cloud cover fraction and the minimum turbulent mixing in stable planetary boundary layer. When implemented, these modifications reduced warm bias up to 50% and did not degrade, or substantially impact, the variables analyzed outside the region and season considered. Valida- tions of the planetary boundary layer and cloud features were limited due to unavailability of appropriate observational data at climatological timescales.

regionalni klimatski model ; naoblaka ; planetarni granični sloj ; pogreška u temperaturi

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