Initialized near-term regional climate change prediction
Prévisions du changement climatique à l'échelle regionale à court terme basées sur des initialisations
Doblas-Reyes, F. J. ; Andreu-Burillo, I. ; Chikamoto, Y. ; Garcia-Serrano, J. ; Guemas, V. ; Kimoto, M. ; Mochizuki, T. ; Rodrigues, L. R. L. ; Oldenborgh, G. J. van
Climate models are seen by many to be unveri?able. However, near-term climate predictions up to 10 years into the future carried out recently with these models can be rigorously veri?ed against observations. Near-term climate prediction is a new information tool for the climate adaptation and service communities, which often make decisions on near-term time scales, and for which the most basic information is unfortunately very scarce. The Fifth Coupled Model Intercomparison Project set of co-ordinated climate-model experiments includes a set of near-term predictions in which several modelling groups participated and whose forecast quality we illustrate here. We show that climate forecast systems have skill in predicting the Earth's temperature at regional scales over the past 50 years and illustrate the trustworthiness of their predictions. Most of the skill can be attributed to changes in atmospheric composition, but also partly to the initialization of the predictions.
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