Simulation of Regional Climate Using a Limited Area Model Nested in a General Circulation Model

1990 ◽  
Vol 3 (9) ◽  
pp. 941-963 ◽  
Author(s):  
Filippo Giorgi
Keyword(s):  
General Circulation Model ◽  
General Circulation ◽  
Regional Climate ◽  
Circulation Model ◽  
Limited Area ◽  
Limited Area Model ◽  
Area Model

scholarly journals Application of Boyd’s Periodization and Relaxation Method in a Spectral Atmospheric Limited-Area Model. Part I: Implementation and Reproducibility Tests

2012 ◽  
Vol 140 (10) ◽  
pp. 3137-3148 ◽  
Author(s):  
Piet Termonia ◽  
Fabrice Voitus ◽  
Daan Degrauwe ◽  
Steven Caluwaerts ◽  
Rafiq Hamdi
Keyword(s):  
Numerical Weather Prediction ◽  
Weather Prediction ◽  
Regional Climate ◽  
Three Dimensional ◽  
Relaxation Method ◽  
Atmospheric Modeling ◽  
Limited Area ◽  
Limited Area Model ◽  
Numerical Weather ◽  
Area Model

Abstract This paper describes the implementation of a proposal of Boyd for the periodization and relaxation of the fields in a full three-dimensional spectral semi-implicit semi-Lagrangian limited-area model structure of an atmospheric modeling system called HARMONIE that is used for numerical weather prediction and regional climate studies. Some first feasibility tests in an operational numerical weather prediction context are presented. They show that, in terms of standard operational forecast scores, Boyd’s windowing-based method provides comparable performance as the old existing spline-based periodization procedure. However, the real improvements of this method should be expected in specific cases of strong dynamical forcings at the lateral boundaries. An extensive demonstration of the superiority of this windowing-based method is provided in an accompanying paper.

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