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California Climate Change Center Report Series Number 2008-0XX

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Date
2008-06
Author
Miller, Norman L.
Duffy, P. B.
Cayan, Daniel R.
Hidalgo León, Hugo G.
Jin, J.
Kanamaru, H.
Kanamitsu, M.
O'Brien, T.
Schlegel, N. J.
Sloan, L. C.
Snyder, M. A.
Yoshimura, Kei
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Abstract
Four dynamic regional climate models (RCMs) and one statistical downscaling approach were used to downscale 10 years of historical climate in California. To isolate possible limitations of the downscaling methods, we used initial and lateral boundary conditions from the NCEP global reanalysis. Results of this downscaling were compared to observations and to an independent, fine-resolution reanalysis (NARR). This evaluation is preparation for simulations of future-climate scenarios, the second phase of this CEC scenarios project. Each model has its own strengths and weaknesses, which are reported here. In general, the dynamic models perform as well as other state-of-the-art dynamical regional climate models, and the statistical model has comparable or superior skill, although for a very limited set of meteorological variables. As is typical, the dynamical models have the most trouble simulating clouds, precipitation, and related processes, especially snow. This suggests that the weakest aspects of the models are parameterized subgrid scale processes, the hydrological cycle, and land surface processes. However, the resulting probabilistic ensemble simulations result in reduced model uncertainty and a better understanding of model spread.
URI
http://hdl.handle.net/10669/29836
Para citar: N.L. Miller, P.B. Duffy, D.R. Cayan, H. Hidalgo, J. Jin, H. Kanamaru, M. Kanamitsu, T. O’Brien, N.J. Schlegel, L.C. Sloan, M.A. Snyder, K. Yoshimura 2008. An Evaluation of Simulated California Climate Using Multiple Dynamical and Statistical Downscaling Techniques. The California Energy Commission, PIER Energy-Related Environmental Research Program. CEC-500-2008-XXX.
 
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  • Repositorios universitarios

  • Repositorio del SIBDI-UCR
  • Biblioteca Digital del CIICLA
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  • Biblioteca Digital Carlos Melendez (CIHAC)
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  • Colección de videos de UPA-VAS
  • Sitios recomendados

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  • Scientific Electronic Library Online (SciELO)
  • Directory of Open Access Journals (DOAJ)
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Repositorio Institucional de la Universidad de Costa Rica. Algunos derechos reservados. Este repositorio funciona con DSpace.
Universidad de Costa Rica