Seasonal march of East Asian rainband simulated by CMIP3 models

Seasonal march of East Asia rainband simulated by the Couple Model Intercomparison Project 5 (CMIP5) models is evaluated. Selected models are four Atmosphere-Ocean General Circulation Model (AOGCM)s developed in East Asia; BCC-CSM1.1 (China, 270km grid in atmosphere), FGOALS-s2 (China, 270km), MRI-CGCM3 (Japan, 120km), MIROC5 (Japan, 150km), Daily precipitation for the 20-years period from year 1986 to 2005 in the historical simulation are used. Pentad mean precipitations of models are compared with pentad mean observations of GPCP 2.5 degree, GPCP 1 degree and TRMM 3B42 data. In general, all models underestimate the precipitation amount in the summertime rainy season of East Asia. Over Japan region (125-142E) northward migration of rainband (Baiu) is more realistically reproduced by Japanese models than by Chinese models. In contrast, over China region (110-120E) northward migration of rainband (Meiyu) is more realistically reproduced by Chinese models than by Japanese models.