Abstract
Summer-time short- to medium-range predictability of precipitation, 500-hPa geopotential height, and wind fields over East Asia are investigated by comparing three ensemble forecast configurations: multi-analysis, multi-convection, and multi-model. These three systems are used in this study in order to assess initial condition uncertainties, model uncertainties, and a combination of initial condition and model uncertainties in an ensemble forecast approach. Each system has a set of six members. Ensemble forecast skill is verified in both deterministic and probabilistic senses using the European Center for Medium-range Weather Forecasting analyses and the Tropical Rainfall Measuring Mission Microwave Imager 2A12 rain estimates. The multi-model configuration, which considers both the initial condition and model uncertainties to predict weather phenomena over East Asia, is an optimal set of ensemble members. The bias-corrected ensemble and the superensemble (SE) show similar predictability, but slightly better skill is obtained from the SE forecasts.
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This work was funded by Korea Meteorological Administration Research and Development Program under grant CATER (Center for Atmospheric Sciences and Earthquake Research) 2010-75.
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Kang, SD., Shin, D.W., Cocke, S. et al. Comparison of ensemble methods for summer-time numerical weather prediction over East Asia. Meteorol Atmos Phys 113, 27–38 (2011). https://doi.org/10.1007/s00703-011-0148-6
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DOI: https://doi.org/10.1007/s00703-011-0148-6