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| 1 | Performance of BCC-CSM Models with Different Horizontal Resolutions in Simulating Extreme Climate Events in China显示文摘In this study,the performance of the Beijing Climate Center(BCC)Climate System Model version 1.1(BCCCSM1.1)(280-km resolution)and the BCC-CSM1.1 m(110-km resolution)in simulating extreme climate events over China in the last 40 years is compared.Both models capture the main spatial distribution features of heavy precipitation(R95T),the number of consecutive wet days(CWD),the annual count of days with precipitation≥1 mm(R1),the maximum consecutive 5-day precipitation(Rx5),and the numbers of frost days(FD)and summer days(SU).The BCC-CSM1.1 m has a better ability to simulate the detailed distribution of extreme climate events than the BCCCSM1.1,including R95T,CWD,R1,and the simple precipitation intensity index(SDII).However,the BCCCSM 1.1 m does not show an improvement in simulating the number of days with extreme precipitation(R90N),the number of consecutive dry days(CDD),the heat wave duration index(HWDI),the warm day frequency(TX90 P),and cold night frequency(TN10P).This indicates that the simulation of the R95T,CWD,R1,and SDII climate events is more sensitive to the resolution of the model.The improved BCC-CSM1.1 m is used to explore the projection of extreme climate change in China during the 21 st century under the RCP4.5(Representative Concentration Pathways)and RCP8.5 scenarios.The results show that extreme precipitation will increase dramatically over North and Southwest China in the late 21 st century.The CWD index will decrease on the Tibetan Plateau and in northeastern and central China and will increase in other parts of China;R1 will increase in northern China and decrease in southern China;Rx5 will increase dramatically in southern China;FD will decrease and SU will increase over China in the late 21 st century under both emission scenarios,with larger amplitudes in RCP8.5. | Linxiao WEI Xiaoge XIN Chan XIAO Yonghua LI Yao WU Hongyu TANG | 2019 | Journal of Meteorological Research2019，33，4： | 3 |
| 2 | 海气耦合过程改进了WRF4模式模拟的西北太平洋夏季风显示文摘利用新的区域海气耦合模式WRF4-LICOM研究了海气耦合过程对西北太平洋夏季风模拟的影响。研究表明,耦合模式改进了非耦合模式模拟的西北太平洋夏季平均降水,环流,海表净热通量和夏季雨带的南北移动。耦合与非耦合模式的差异主要在南海北部及菲律宾岛以东地区。耦合模式里更暖的海温减弱了大气的总体湿稳定度,增强了向上的潜热通量,导致局地异常上升运动,使得局地降水增加。进一步分析表明,海气耦合过程明显改进了日平均SST-降水的相关关系。因此,未来针对该区域气候变化模拟和预估动力降尺度建议采用区域耦合模式。 | ZOU Liwei | 2020 | Atmospheric and Oceanic Science Letters2020，13，6： | 1 |
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