The added value of simulated near-surface wind speed over the Alps from a km-scale multimodel ensemble

• DOI: 10.1007/s00382-024-07257-4
• Publication Date: 2024-05-10T17:01:46Z
• Authors: M. O. Molina; J. M. Careto; C. Gutiérrez; E. Sánchez; K. Goergen; S. Sobolowski; E. Coppola; E. Pichelli; N. Ban; D. Belus̆ić; C. Short; C. Caillaud; A. Dobler; Ø. Hodnebrog; S. Kartsios; G. Lenderink; H. de Vries; O. Göktürk; J. Milovac; H. Feldmann; H. Truhetz; M. E. Demory; K. Warrach-Sagi; K. Keuler; M. Adinolfi; M. Raffa; M. Tölle; K. Sieck; S. Bastin; P. M. M. Soares
• Keywords: info:eu-repo/classification/ddc/550; 550; Probability density functions; Added value; Added value; 01 natural sciences; Climate Science; Wind speed; [SDU.STU.CL] Sciences of the Universe [physics]/Earth Sciences/Climatology; [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology; Probability density functions; Downscaling; Klimatvetenskap; 0105 earth and related environmental sciences; Regional climate modelling

Abstract The advancement of computational resources has allowed researchers to run convection-permitting regional climate model (CPRCM) simulations. A pioneering effort promoting a multimodel ensemble such simulations is the CORDEX Flagship Pilot Studies (FPS) on “Convective Phenomena over Europe and Mediterranean” an extended Alps region. In this study, Distribution Added Value metric used determine improvement representation all available FPS hindcast for daily mean near-surface wind speed. analysis performed normalized empirical probability distributions considers station observation data as reference. use allows spatial comparison among different regions (coast inland), altitudes seasons. This approach permits direct assessment added value between CPRCM against their global driving reanalysis (ERA-Interim) respective coarser resolution counterparts. general, results show that CPRCMs add or forcing model, due better-resolved topography through better ocean-land contrasts. However, nature magnitude in speed vary depending season, altitude, Among seasons, usually larger summer than winter. generally display gains at low medium-range altitudes. addition, despite some shortcomings ERA-Interim, which can be attributed assimilation observations coast, outperform models, both along coast inland.