Review on Application of Statistical Downscaling Techniques in China

The downscaling technique is useful for solving the problem of combining the atmospheric circulation model scenarios(GCMs) and hydrological models.The main characteristics and background of downscaling method are analyzed.The classification of the advantages and disadvantages of each downscaling method are introduced.According to the application the statistical downscaling methods in different areas in recent years,the theory of statistical downscaling methods,application procedures and research progress are systematically discussed.Through comparative analysis,statistical downscaling method is superior to dynamical downscaling.And the shortages of the application of statistical downscaling need to be improved in the future,especially the shortages in the precipitation forecast.Finally,prospects of developing new downscaling techniques by combining statistical and dynamical downscaling techniques are pointed out.