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The first multi-model ensemble of regional climate simulations at kilometer-scale resolution, part I: evaluation of precipitation

Ban, N.; Caillaud, C.; Coppola, E.; Pichelli, E.; Sobolowski, S.; Adinolfi, M.; Ahrens, B.; Alias, A.; Anders, I.; Bastin, S.; Belušić, D.; Berthou, S.; Brisson, E.; Cardoso, R. M.; Chan, S. C.; Christensen, O. B.; Fernández, J.; Fita, L.; Frisius, T.; Gašparac, G.; ... mehr

Abstract:
Here we present the first multi-model ensemble of regional climate simulations at kilometer-scale horizontal grid spacing over a decade long period. A total of 23 simulations run with a horizontal grid spacing of ∼3 km, driven by ERA-Interim reanalysis, and performed by 22 European research groups are analysed. Six different regional climate models (RCMs) are represented in the ensemble. The simulations are compared against available high-resolution precipitation observations and coarse resolution (∼ 12 km) RCMs with parameterized convection. The model simulations and observations are compared with respect to mean precipitation, precipitation intensity and frequency, and heavy precipitation on daily and hourly timescales in different seasons. The results show that kilometer-scale models produce a more realistic representation of precipitation than the coarse resolution RCMs. The most significant improvements are found for heavy precipitation and precipitation frequency on both daily and hourly time scales in the summer season. In general, kilometer-scale models tend to produce more intense precipitation and reduced wet-hour frequency compared to coarse resolution models. ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000131895
Veröffentlicht am 27.04.2021
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung - Forschungsbereich Troposphäre (IMK-TRO)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2021
Sprache Englisch
Identifikator ISSN: 0930-7575, 1432-0894
KITopen-ID: 1000131895
Erschienen in Climate Dynamics
Verlag Springer
Schlagwörter Regional climate models; Multi-model ensemble simulations; Kilometer-scale resolution; Precipitation
Nachgewiesen in Scopus
Web of Science
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