An RCM multi-physics ensemble over Europe: multi-variable evaluation to avoid error compensation

Verfasser / Beitragende:
[Markel García-Díez, Jesús Fernández, Robert Vautard]
Ort, Verlag, Jahr:
2015
Enthalten in:
Climate Dynamics, 45/11-12(2015-12-01), 3141-3156
Format:
Artikel (online)
ID: 605472599
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024 7 0 |a 10.1007/s00382-015-2529-x  |2 doi 
035 |a (NATIONALLICENCE)springer-10.1007/s00382-015-2529-x 
245 0 3 |a An RCM multi-physics ensemble over Europe: multi-variable evaluation to avoid error compensation  |h [Elektronische Daten]  |c [Markel García-Díez, Jesús Fernández, Robert Vautard] 
520 3 |a Regional Climate Models are widely used tools to add detail to the coarse resolution of global simulations. However, these are known to be affected by biases. Usually, published model evaluations use a reduced number of variables, frequently precipitation and temperature. Due to the complexity of the models, this may not be enough to assess their physical realism (e.g. to enable a fair comparison when weighting ensemble members). Furthermore, looking at only a few variables makes difficult to trace model errors. Thus, in many previous studies, these biases are described but their underlying causes and mechanisms are often left unknown. In this work the ability of a multi-physics ensemble in reproducing the observed climatologies of many variables over Europe is analysed. These are temperature, precipitation, cloud cover, radiative fluxes and total soil moisture content. It is found that, during winter, the model suffers a significant cold bias over snow covered regions. This is shown to be related with a poor representation of the snow-atmosphere interaction, and is amplified by an albedo feedback. It is shown how two members of the ensemble are able to alleviate this bias, but by generating a too large cloud cover. During summer, a large sensitivity to the cumulus parameterization is found, related to large differences in the cloud cover and short wave radiation flux. Results also show that small errors in one variable are sometimes a result of error compensation, so the high dimensionality of the model evaluation problem cannot be disregarded. 
540 |a Springer-Verlag Berlin Heidelberg, 2015 
690 7 |a WRF  |2 nationallicence 
690 7 |a Multi-physics  |2 nationallicence 
690 7 |a Model evaluation  |2 nationallicence 
690 7 |a Radiation  |2 nationallicence 
690 7 |a Soil moisture  |2 nationallicence 
690 7 |a CERES  |2 nationallicence 
690 7 |a E-OBS  |2 nationallicence 
690 7 |a GLDAS  |2 nationallicence 
690 7 |a CORDEX  |2 nationallicence 
690 7 |a EURO-CORDEX  |2 nationallicence 
700 1 |a García-Díez  |D Markel  |u Unitat de Dinàmica i Impacte Climàtic (UDIC), Institut Català de Ciències del Clima, 08005, Barcelona, Catalonia, Spain  |4 aut 
700 1 |a Fernández  |D Jesús  |u Grupo de Meteorología, Dept. Matemática Aplicada y Ciencias de la Computación, Univ. de Cantabria, Avda. de los Castros, s/n, 39005, Santander, Spain  |4 aut 
700 1 |a Vautard  |D Robert  |u Laboratoire des Sciences du Climat et de l'Environnement, Institute Pierre-Simon-Laplace, CEA, CNRS, UVSQ, Gif sur Yvette, France  |4 aut 
773 0 |t Climate Dynamics  |d Springer Berlin Heidelberg  |g 45/11-12(2015-12-01), 3141-3156  |x 0930-7575  |q 45:11-12<3141  |1 2015  |2 45  |o 382 
856 4 0 |u https://doi.org/10.1007/s00382-015-2529-x  |q text/html  |z Onlinezugriff via DOI 
898 |a BK010053  |b XK010053  |c XK010000 
900 7 |a Metadata rights reserved  |b Springer special CC-BY-NC licence  |2 nationallicence 
908 |D 1  |a research-article  |2 jats 
949 |B NATIONALLICENCE  |F NATIONALLICENCE  |b NL-springer 
950 |B NATIONALLICENCE  |P 856  |E 40  |u https://doi.org/10.1007/s00382-015-2529-x  |q text/html  |z Onlinezugriff via DOI 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a García-Díez  |D Markel  |u Unitat de Dinàmica i Impacte Climàtic (UDIC), Institut Català de Ciències del Clima, 08005, Barcelona, Catalonia, Spain  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Fernández  |D Jesús  |u Grupo de Meteorología, Dept. Matemática Aplicada y Ciencias de la Computación, Univ. de Cantabria, Avda. de los Castros, s/n, 39005, Santander, Spain  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Vautard  |D Robert  |u Laboratoire des Sciences du Climat et de l'Environnement, Institute Pierre-Simon-Laplace, CEA, CNRS, UVSQ, Gif sur Yvette, France  |4 aut 
950 |B NATIONALLICENCE  |P 773  |E 0-  |t Climate Dynamics  |d Springer Berlin Heidelberg  |g 45/11-12(2015-12-01), 3141-3156  |x 0930-7575  |q 45:11-12<3141  |1 2015  |2 45  |o 382