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4. Conclusions
The spectral nudging technique prevents the regional model
from generating internal states inconsistent with the driving
fields as well as grants the model with freedom to develop
regional and small-scale patterns. The simulations using the
spectral nudging method show demonstrative skill in
dynamical downscaling by (1) significantly reducing the
model’s systematic error in simulating forcing variables; (2)
largely improving the simulation of individual precipitation
events, i.e. the intra-seasonal variability of regional
precipitation.
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