期刊
SCIENCE CHINA-EARTH SCIENCES
卷 62, 期 2, 页码 365-375出版社
SCIENCE PRESS
DOI: 10.1007/s11430-018-9261-5
关键词
Global circulation model; Bias correction; Regional climate model; Downscaling; Projection of regional climate
资金
- National Natural Science Foundation of China [91637103, 41675105, 41675080]
The traditional dynamical downscaling (TDD) method employs continuous integration of regional climate models (RCM) with the general circulation model (GCM) providing the initial and lateral boundary conditions. Dynamical downscaling simulations are constrained by physical principles and can generate a full set of climate information, providing one of the important approaches to projecting fine spatial-scale future climate information. However, the systematic biases of climate models often degrade the TDD simulations and hinder the application of dynamical downscaling in the climate-change related studies. New methods developed over past decades improve the performance of dynamical downscaling simulations. These methods can be divided into four groups: the TDD method, the pseudo global warming method, dynamical downscaling with GCM bias corrections, and dynamical downscaling with both GCM and RCM bias corrections. These dynamical downscaling methods are reviewed and compared in this paper. The merits and limitations of each dynamical downscaling method are also discussed. In addition, the challenges and potential directions in progressing dynamical downscaling methods are stated.
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