Changes of Extreme Events in Regional Climate Simulations over East Asia

Changes of extreme events due to greenhouse effects (2×CO2) over East Asia, with a focus on theChina region as simulated by a regional climate model (RegCM2), are investigated. The model is nested to aglobal coupled ocean-atmosphere model (CSIRO R21 L9 AOGCM). Analysis of the control run of the re-gional model indicates that it can reproduce well the extreme events in China. Statistically significantchanges of the events are analyzed. Results show that both daily maximum and daily minimum temperatureincrease in 2×CO2 conditions, while the diurnal temperature range decreases. The number of hot spell daysincreases while the number of cold spell days decreases. The number of rainy days and heavy rain days in-creases over some sub-regions of China. The 2×CO2 conditions also cause some changes in the tropicalstorms affecting China.