干旱区生态环境知识资源中心(Arid): Comparison of trends in the Hadley circulation between CMIP6 and CMIP5

Arid

	Comparison of trends in the Hadley circulation between CMIP6 and CMIP5
其他题名	CMIP6和CMIP5中哈德雷环流变化趋势的比较
	Xia Yan; Hu Yongyun; Liu Jiping
来源期刊	科学通报
ISSN	2095-9273
出版年	2020
卷号	65 期号:19 页码:1667-1674
中文摘要	近些年来,哈德雷环流变宽和副热带干旱区域向极地区域移动受到了气候变化领域高度的关注.本文使用第六次国际耦合气候模式比较计划(CMIP6)的模拟结果,分析了哈德雷环流宽度和强度的变化趋势,并且与CMIP5模拟结果进行了对比.分析表明,在CMIP6中包含了全部辐射强迫因子的历史模拟试验中,哈德雷环流在1970~2014年间平均每10年变宽0.13°0.02°,与CMIP5的结果基本相当.关于哈德雷环流的强度,CMIP6给出的北支环流强度减弱比CMIP5大,而在南支环流则有变弱的加强趋势.CMIP6单个辐射强迫模拟试验表明,温室气体的增加导致南北半支哈德雷环流均变宽和变弱,而人类活动导致的气溶胶增加和平流层臭氧的变化使得南支哈德雷环流变弱的趋势加强.CMIP6未来模拟试验结果表明,哈德雷环流变宽和变弱的趋势均随辐射强迫的增强而加强.
英文摘要	There have been extensive studies on poleward expansion of the Hadley cells and the associated poleward shift of subtropical dry zones in the past decade. In the present study, we study the trends in the width and strength of the Hadley cells, using currently available simulation results of the Coupled Model Intercomparison Project Phase-6 (CMIP6), and compare the trends with that in CMIP5 simulations. Our results show that the total annual-mean trend in the width of the Hadley cells is 0.13° 0.02° per decade over 1970-2014 in CMIP6 historical All-forcing simulations. It is almost the same as that in CMIP5. The trend in the strength of the Northern-Hemisphere (NH) cell shows much greater weakening in CMIP6 than in CMIP5, while the strength trend in the Southern-Hemisphere (SH) cell shows slight strengthening. Single-forcing simulations demonstrate that increasing greenhouse gases cause widening and weakening of both the NH and SH Hadley cells, while anthropogenic aerosols and stratospheric ozone changes cause weak strengthening trends in the SH cell. CMIP6 projection simulation results show that both the widening and weakening trends increase with radiative forcing.
英文关键词	Hadley circulation Global warming Increasing greenhouse gases Stratospheric ozone Anthropogenic aerosols Coupled Model Intercomparison Project Phase-6 (CMIP6)
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:6808599
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/336916
推荐引用方式 GB/T 7714	Xia Yan,Hu Yongyun,Liu Jiping. Comparison of trends in the Hadley circulation between CMIP6 and CMIP5[J],2020,65(19):1667-1674.
APA	Xia Yan,Hu Yongyun,&Liu Jiping.(2020).Comparison of trends in the Hadley circulation between CMIP6 and CMIP5.科学通报,65(19),1667-1674.
MLA	Xia Yan,et al."Comparison of trends in the Hadley circulation between CMIP6 and CMIP5".科学通报 65.19(2020):1667-1674.