Abstract
In order to effectively improve numerical prediction level by using current models and data, the strategy and methodology of dynamical analogue prediction (DAP) is deeply studied in the present paper. A new idea to predict the prediction errors of dynamical model on the basis of historical analogue information is put forward so as to transform the dynamical prediction problem into the estimation problem of prediction errors. In terms of such an idea, a new prediction method of final analogue correction of errors (FACE) is developed. Furthermore, the FACE is applied to extra-seasonal prediction experiments on an operational atmosphere-ocean coupled general circulation model. Prediction results of summer mean circulation and total precipitation show that the FACE can to some extent reduce prediction errors, recover prediction variances, and improve prediction skills. Besides, sensitive experiments also show that predictions based on the FACE are evidently influenced by the number of analogues, analogue-selected variables and analogy metric.
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Supported jointly by the National Natural Science Foundation of China (Grant Nos. 40675039 and 40575036) and the National Science and Technology Support Program of China (Grant No. 2006BAC02B04)
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Ren, H., Chou, J. Strategy and methodology of dynamical analogue prediction. SCI CHINA SER D 50, 1589–1599 (2007). https://doi.org/10.1007/s11430-007-0109-6
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DOI: https://doi.org/10.1007/s11430-007-0109-6