Changes of Baiu (Mei-yu) Frontal Activity in the Global Warming Climate Simulated by a Non-hydrostatic Regional Model
Changes of Baiu (Mei-yu) Frontal Activity in the Global Warming Climate Simulated by a Non-hydrostatic Regional Model
复制标题
非静水力区域模式模拟全球变暖气候下梅雨锋活动的变化
DOI：
10.2151/sola.2005-008
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发表时间：
2005
期刊：
影响因子：
1.9
通讯作者：
S. Kusunoki
中科院分区：
文献类型：
--
作者：
M. Yoshizaki;Chihiro Muroi;S. Kanada;Y. Wakazuki;K. Yasunaga;A. Hashimoto;Tsuneaki Kato;K. Kurihara;A. Noda;S. Kusunoki
利用一个水平网格尺寸为5 km的区域非静力模式（NHM）的输出资料，研究了全球变暖气候和当前气候条件下东亚地区的梅雨锋。NHM在6月和7月运行了10年，应用谱边界耦合方法，使用网格大小为20 km的全球气候模式的输出来减少大尺度扰动的水平相位差。在全球气候变暖的情况下，白鸥锋可能停留在日本南部岛屿的30 N <$32 N附近，不会向北移动。因此，白乌锋的活动比现今气候条件下维持的时间更长，降水量增加。另一方面，在北方日本群岛和北方朝鲜半岛的降水减少。年没有结束的Baiu季节经常看到，和发生的频率大于30毫米小时的强降雨量增加在日本群岛。
The Baiu (Mei-yu) front over East Asia in the global warming climate as well as that in the present one, is studied using outputs of a non-hydrostatic regional model with a horizontal grid size of 5 km (NHM). The NHM was run in June and July for ten years, applying a spectral boundary coupling method to reduce the horizontal phase differences of large-scale disturbances using the outputs of a global climate model with a grid size of 20 km. In the global warming climate, the Baiu front is likely to stay over the southern Japan Islands around the latitudes of 30 N‒32 N and will not move northward. Therefore, the activity of the Baiu front maintains longer than that in the present climate, and the precipitation increases. On the other hand, the precipitation decreases over the northern Japan Islands and the northern Korean Peninsula. Years with no end of the Baiu season are often seen, and the frequency of occurrence of heavy rainfall greater than 30 mm h increases over the Japan Islands.