| SIMULATION OF TROPICAL CYCLONES OVER THE WESTERN NORTH PACIFIC AND LANDFALLING
IN CHINA BY REGCM4 |
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| 作者姓名： | 吴 婕 高学杰 |
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| 摘 要： | This study evaluates the performance of the regional climate model RegCM4 in simulating tropical cyclone (TC) activities over the Western North Pacific (WNP) and their landfalling in China. The model is driven by ERA-Interim boundary conditions at a grid spacing of 25 km, with the simulation period as 1991–2010. Results show that RegCM4 performs well in capturing the main structural features of observed TCs, and in simulating the genesis number and annual cycle of the genesis. The model reproduces the general pattern of the observed TC tracks and occurrence frequency. However, significant underestimation of the occurrence frequency as well as the TC intensity is found. Number of the landfalling TCs over China is also much less than the observed. Bias of the model in reproducing the large-scale circulation pattern and steering flow may contribute to the underestimated landfalling TC numbers.
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| 关 键 词： | climatology tropical cyclone RegCM western North Pacific landfall |
| 修稿时间： | 2019/8/15 0:00:00 |
SIMULATION OF TROPICAL CYCLONES OVER THE WESTERN NORTH PACIFIC AND LANDFALLING
IN CHINA BY REGCM4 |
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| WU Jie and GAO Xue-jie.SIMULATION OF TROPICAL CYCLONES OVER THE WESTERN NORTH PACIFIC AND LANDFALLING
IN CHINA BY REGCM4[J].Journal of Tropical Meteorology,2019,25(4):437-447. |
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| Authors: | WU Jie and GAO Xue-jie |
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| Institution: | ;1.Climate Change Research Center;2. Institute of Atmospheric Physics;3. Chinese Academy of Sciences;4.University of Chinese Academy of Sciences |
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| Abstract: | This study evaluates the performance of the regional climate model RegCM4 in simulating tropical cyclone(TC) activities over the Western North Pacific(WNP) and their landfalling in China. The model is driven by ERA-Interim boundary conditions at a grid spacing of 25 km, with the simulation period as 1991-2010. Results show that RegCM4 performs well in capturing the main structural features of observed TCs, and in simulating the genesis number and annual cycle of the genesis. The model reproduces the general pattern of the observed TC tracks and occurrence frequency. However, significant underestimation of the occurrence frequency as well as the TC intensity is found. Number of the landfalling TCs over China is also much smaller than that of the observed. Bias of the model in reproducing the large-scale circulation pattern and steering flow may contribute to the underestimated landfalling TC numbers. |
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| Keywords: | climatology tropical cyclone RegCM western North Pacific landfall |
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