The Rossby Centre Regional Climate model RCA3: model description and performance
By P. Samuelsson, Colin G. Jones, Ulrika Will´En, A. Ullerstig, S. Gollvik, Ulf Hansson, E. Jansson, Christer Kjellstro¨M, Grigory Nikulin∗, K. Wyser. 2011
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This paper describes the third full release of the Rossby Centre Regional Climate model (RCA3), with an emphasis on changes compared to earlier versions, in particular the introduction of a new tiled land-surface scheme. The model performance over Europe when driven at the boundaries by ERA40 reanalysis is discussed and systematic biases identified. This discussion is performed for key near-surface variables, such as temperature, precipitation, wind speed and snow amounts at both seasonal and daily timescales. An analysis of simulated clouds and surface turbulent and radiation fluxes is also made, to understand the causes of the identified biases. RCA3 shows equally good, or better, correspondence to observations than previous model versions at both analysed timescales. The primary model bias relates to an underestimate of the diurnal surface temperature range over Northern Europe, which maximizes in summer. This error is mainly linked to an overestimate of soil heat flux. It is shown that the introduction of an organic soil component reduces the error significantly. During the summer season, precipitation and surface evaporation are both overestimated over Northern Europe, whereas for most other regions and seasons precipitation and surface turbulent fluxes are well simulated.
Subfields: Atmospheric Science, Global and Planetary Change
View Paper: https://www.semanticscholar.org/paper/1cb7f4e49e26f8427fd0776a5a37c130946da38b
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Citations in the corpus
- Evaluation and future projections of temperature, precipitation and wind extremes over Europe in an ensemble of regional climate simulations (2011, methodology): “Model simulations The downscaling of GCM simulations has been performed with the Rossby Center Regional Climate Model (RCA3) (Kjellström et al., 2005; Samuelsson et al., 2011).”
- Climate change multi‐model projections for temperature extremes in Portugal (2014, methodology): “RCA Swedish Meteorological and Hydrological Institute (Samuelsson et al., 2011) 0.”
- Comparing reconstructed past variations and future projections of the Baltic Sea ecosystem—first results from multi-model ensemble simulations (2012, methodology): “The daily fields are homogeneous and physically consistent by making use of both long European historical station data since 1850, and simulated atmospheric fields from RCAO over Northern Europe in the period 1958–2006, driven by re-analysis data at the lateral boundaries (Samuelsson et al 2011).”
- Development and evaluation of a new regional coupled atmosphere–ocean model in the North Sea and Baltic Sea (2015, methodology): “, 2004), RCA3 (Samuelsson et al., 2011) and RCA4 (Kupiainen et al.”