Benefit of convection permitting climate model simulations in the representation of convective precipitation

Verfasser / Beitragende:
[G. Fosser, S. Khodayar, P. Berg]
Ort, Verlag, Jahr:
2015
Enthalten in:
Climate Dynamics, 44/1-2(2015-01-01), 45-60
Format:
Artikel (online)
ID: 605474206
LEADER caa a22 4500
001 605474206
003 CHVBK
005 20210128100346.0
007 cr unu---uuuuu
008 210128e20150101xx s 000 0 eng
024 7 0 |a 10.1007/s00382-014-2242-1  |2 doi 
035 |a (NATIONALLICENCE)springer-10.1007/s00382-014-2242-1 
245 0 0 |a Benefit of convection permitting climate model simulations in the representation of convective precipitation  |h [Elektronische Daten]  |c [G. Fosser, S. Khodayar, P. Berg] 
520 3 |a A major source of uncertainty in regional climate model (RCM) simulations arises from the parameterisation of sub-grid scale convection. With increasing model resolution, approaching the so-called convection permitting scale, it is possible to switch off most of the convection parameterisations. A set of simulations using COSMO-CLM model has been carried out at different resolutions in order to investigate possible improvements and limitations resulting from increased horizontal resolution. For our analysis, 30years were simulated in a triple nesting setup with 50, 7 and 2.8km resolutions, with ERA40 reanalysis data at the lateral boundaries of the coarsest nest. The investigation area covers the state of Baden-Württemberg in southwestern Germany, which is a region known for abundant orographically induced convective precipitation. A very dense network of high temporal resolution rain gauges is used for evaluation of the model simulations. The purpose of this study is to examine the differences between the 7 and 2.8km resolutions in the representation of precipitation at sub-daily timescales, and the atmospheric conditions leading to convection. Our results show that the highest resolution of RCM simulations significantly improves the representation of both hourly intensity distribution and diurnal cycle of precipitation. In addition, at convection permitting scale the atmospheric fields related to convective precipitation show a better agreement with each other. The results imply that higher spatial resolution partially improves the representation of the precipitation field, which must be the way forward for regional climate modelling. 
540 |a The Author(s), 2014 
690 7 |a Regional climate model  |2 nationallicence 
690 7 |a COSMO-CLM  |2 nationallicence 
690 7 |a Convection permitting scale  |2 nationallicence 
690 7 |a Convection  |2 nationallicence 
690 7 |a Atmospheric processes  |2 nationallicence 
690 7 |a Diurnal cycle and precipitation  |2 nationallicence 
700 1 |a Fosser  |D G.  |u Institute for Meteorology and Climate Research, Karlsruhe Institute of Technology, Wolfgang-Gaede-Strasse 1, 76131, Karlsruhe, Germany  |4 aut 
700 1 |a Khodayar  |D S.  |u Institute for Meteorology and Climate Research, Karlsruhe Institute of Technology, Wolfgang-Gaede-Strasse 1, 76131, Karlsruhe, Germany  |4 aut 
700 1 |a Berg  |D P.  |u Swedish Meteorological and Hydrological Institute, Folkborgsvägen 17, 60176, Norrköping, Sweden  |4 aut 
773 0 |t Climate Dynamics  |d Springer Berlin Heidelberg  |g 44/1-2(2015-01-01), 45-60  |x 0930-7575  |q 44:1-2<45  |1 2015  |2 44  |o 382 
856 4 0 |u https://doi.org/10.1007/s00382-014-2242-1  |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/s00382-014-2242-1  |q text/html  |z Onlinezugriff via DOI 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Fosser  |D G.  |u Institute for Meteorology and Climate Research, Karlsruhe Institute of Technology, Wolfgang-Gaede-Strasse 1, 76131, Karlsruhe, Germany  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Khodayar  |D S.  |u Institute for Meteorology and Climate Research, Karlsruhe Institute of Technology, Wolfgang-Gaede-Strasse 1, 76131, Karlsruhe, Germany  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Berg  |D P.  |u Swedish Meteorological and Hydrological Institute, Folkborgsvägen 17, 60176, Norrköping, Sweden  |4 aut 
950 |B NATIONALLICENCE  |P 773  |E 0-  |t Climate Dynamics  |d Springer Berlin Heidelberg  |g 44/1-2(2015-01-01), 45-60  |x 0930-7575  |q 44:1-2<45  |1 2015  |2 44  |o 382