中文摘要：

为使区域气候模式RegCM3在中国区域气候的模拟中取得更好的模拟效果,针对RegCM3进行了初始场、模式水平分辨率、侧边界方案及积云对流方案的敏感性试验。结果表明：①从冬季开始的积分,模拟结果对初始场的依赖性较小;②模式水平分辨率的提高不一定会带来模拟效果的显著改善,高分辨率的嵌套模拟会对模拟效果有一定程度的改善;③选用指数松弛侧边界方案和Grell积云对流方案模拟效果较好。以上结论可为应用RegCM3研究中国区域气候的数值模拟方案设计提供有价值的参考。

英文摘要：

The simulated results of regional climate model （RgrCM3） are sensitive to initial and lateral boundary conditions, model horizontal resolutions, and different parameterizations. The sensitivity experiments were conducted to improve the regional climate simulation over China with RgrCM3. The experiment results indicate that the regional climate simulation by using RegCM3 beginning from winter is suitable, as the results of simulation are not notably affected by initial bias. The improvement of the simulated results from the increase of horizontal resolution is indistinctive. Nest simulation with higher horizontal resolution is able to improve the simulated results. The exponential relaxation scheme and Grell convective precipitation parameterization are better than others in the regional climate simulation over China.