| Summer Extreme Temperatures over East China during 1984-2004 Simulated by LASG/IAP Regional Climate Model CREM |
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| 作者姓名： | ZENG Xian-Feng LIU Jing-Wei LI Bo GUO Zhun ZHOU Tian-Jun FENG Lei |
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| 基金项目： | supported by the China-UK-Swiss Adapting to Climate Change in China Project (ACCC)-Climate Science;the Public Science and Technology Research Funds Projects of Ocean (201105019-3);the Knowledge Innovation Program of the Chinese Academy of Sciences (KZCX2-YW- Q11-04) |
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| 摘 要： | The authors examine extreme summer temperatures over East China during 1984-2004 using a regional climate model named CREM(the Climate version of Regional Eta-coordinate Model),which was developed by LASG/IAP.The results show that the main features of the extreme summer temperatures over East China are reproduced well by CREM,and the skill for the minimum temperature is higher than that for the maximum temperature,especially along the Yangtze-Huai River Valley(YHV).The simulated extreme temperatures are lower than those of observation,especially for the maximum temperature.The bias of extreme temperatures is consistent with the cold bias of the climatological mean summer surface air temperature.The skill of the model in simulating the interannual variability of extreme temperatures increases from north to south.The simulated interannual variation of the minimum temperature is more reasonable than the maximum temperature.The underestimation of net solar radiation at the surface leads to a cold bias of the climatological mean temperature.Furthermore,the model underestimates the light and moderate rain,while overestimates heavy rain.It causes the simulated minimum temperature more reasonable than the maximum temperature.
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| 关 键 词： | summer extreme temperatures East China CREM |
Summer Extreme Temperatures over East China during 1984-2004 Simulated by LASG/IAP Regional Climate Model CREM |
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| ZENG Xian-Feng,LIU Jing-Wei,LI Bo,GUO Zhun,ZHOU Tian-Jun,FENG Lei.Summer Extreme Temperatures over East China during 1984-2004 Simulated by LASG/IAP Regional Climate Model CREM[J].Atmospheric and Oceanic Science Letters,2012,5(1):68-73. |
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| Authors: | ZENG Xian-Feng LIU Jing-Wei LI Bo GUO Zhun ZHOU Tian-Jun and FENG Lei |
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| Institution: | 1. State Key Laboratory of Numerical Modeling for Atmospheric Science and Geophysical Fluid Dynamics (LASG), Institute of At-mospheric Physics (IAP), Chinese Academy of Sciences, Beijing 100029, China; 2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China; 3. Meteorology Center, Lanzhou Airforce, Lanzhou 730020, China;1. State Key Laboratory of Numerical Modeling for Atmospheric Science and Geophysical Fluid Dynamics (LASG), Institute of At-mospheric Physics (IAP), Chinese Academy of Sciences, Beijing 100029, China; 2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China;1. State Key Laboratory of Numerical Modeling for Atmospheric Science and Geophysical Fluid Dynamics (LASG), Institute of At-mospheric Physics (IAP), Chinese Academy of Sciences, Beijing 100029, China; 2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China;1. State Key Laboratory of Numerical Modeling for Atmospheric Science and Geophysical Fluid Dynamics (LASG), Institute of At-mospheric Physics (IAP), Chinese Academy of Sciences, Beijing 100029, China; 2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China;1. State Key Laboratory of Numerical Modeling for Atmospheric Science and Geophysical Fluid Dynamics (LASG), Institute of At-mospheric Physics (IAP), Chinese Academy of Sciences, Beijing 100029, China;1. State Key Laboratory of Numerical Modeling for Atmospheric Science and Geophysical Fluid Dynamics (LASG), Institute of At-mospheric Physics (IAP), Chinese Academy of Sciences, Beijing 100029, China; 2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | The authors examine extreme summer temperatures over East China during 1984-2004 using a regional climate model named CREM (the Climate version of Regional Eta-coordinate Model), which was developed by LASG/IAP. The results show that the main features of the extreme summer temperatures over East China are reproduced well by CREM, and the skill for the minimum temperature is higher than that for the maximum temperature, especially along the Yangtze-Huai River Valley (YHV). The simulated extreme temperatures are lower than those of observation, especially for the maximum temperature. The bias of extreme temperatures is consistent with the cold bias of the climatological mean summer surface air temperature. The skill of the model in simulating the interannual variability of extreme temperatures increases from north to south. The simulated interannual variation of the minimum temperature is more reasonable than the maximum temperature. The underestimation of net solar radiation at the surface leads to a cold bias of the climatological mean temperature. Furthermore, the model underestimates the light and moderate rain, while overestimates heavy rain. It causes the simulated minimum temperature more reasonable than the maximum temperature. |
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| Keywords: | summer extreme temperatures East China CREM |
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