Summer Monsoonal Rainfall Simulation on the Tibetan Plateau with a Regional Climate Model Using a One-way Double-nesting System
Summer Monsoonal Rainfall Simulation on the Tibetan Plateau with a Regional Climate Model Using a One-way Double-nesting System
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DOI：
10.2151/sola.2007-013
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发表时间：
2007
期刊：
影响因子：
1.9
通讯作者：
X. Cui;B. Langmann;H. Graf
中科院分区：
文献类型：
--
作者：
X. Cui;B. Langmann;H. Graf
本研究探讨了区域气候模式REMO模拟青藏高原夏季季风降雨分布和演变的能力。该模型于1998年夏季在单向双重嵌套系统的“完美边界”驱动下进行，其中55公里网格点中间母域涵盖东亚，18公里网格点间距嵌套域几乎覆盖整个青藏高原。通过与现场观测的比较，模型结果表明，高分辨率的运行优于低分辨率的运行。 REMO水平分辨率为18公里，可以重现日尺度的主要降水事件并模拟空间差异。模型中季风降水的演变和空间分布合理，与观测结果具有可比性。
This study investigates the capability of the regional climate model REMO to simulate the summer monsoonal rainfall distribution and evolution on the Tibetan Plateau. The model is performed for summer 1998 driven by “perfect boundaries” in a one-way double-nesting system, with a 55 km grid point intermediate mother domain encompassing East Asia and a 18 km grid point spacing nested domain covering almost the whole Tibetan Plateau. By comparison with in situ observations, the model results demonstrate that the higher resolution run out-performs the lower one. At a horizontal resolution of 18 km, REMO could reproduce the major precipitation events at daily scale and simulate the spatial differences. The evolution and spatial distribution of the monsoonal rainfall in the model are reasonable and comparable to observations.