气候变化领域集成服务门户(CCPortal): Impact of stratospheric aerosol intervention geoengineering on surface air temperature in China: a surface energy budget perspective

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DOI	10.5194/acp-22-7667-2022
	Impact of stratospheric aerosol intervention geoengineering on surface air temperature in China: a surface energy budget perspective
	Liu, Zhaochen; Lang, Xianmei; Jiang, Dabang
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	7667
结束页码	7680
卷号	22 期号:11 页码:14
英文摘要	Stratospheric aerosol intervention (SAI) geoengineering is a proposed scheme to counteract anthropogenic global warming, but the climate response to SAI, with great regional disparities, remains uncertain. In this study, we use Geoengineering Model Intercomparison Project G4 experiment simulations from six models that counteract anthropogenic forcing under medium-low emissions (Representative Concentration Pathway 4.5 - RCP4.5) by injecting a certain amount of SO2 into the stratosphere every year to investigate the surface air temperature response to SAI geoengineering over China. We have found that SAI has led to surface cooling over China during the last 40 years of injection simulation (2030-2069), which varies among models, regions, and seasons. Decreased tropospheric temperature and water vapor and increased stratospheric aerosols induce robust decreases in downward clear-sky longwave and shortwave radiation fluxes at the surface, respectively, dominating the temperature change over China. Changes in cloud effective forcing and surface albedo feedback also relate to the temperature response but with large spatial and seasonal variations. We find that the increased summer cloud cover and winter surface albedo lead to strong cooling, while the decreased summer cloud cover and winter surface albedo lead to weak cooling or even insignificant warming for the certain subregions and models. Our results suggest that cloud and land surface processes in models dominate the spatial pattern of SAI-induced surface air temperature change over China.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000810475400001
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/273202
作者单位	Chinese Academy of Sciences; Institute of Atmospheric Physics, CAS; Nanjing University of Information Science & Technology; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS
推荐引用方式 GB/T 7714	Liu, Zhaochen,Lang, Xianmei,Jiang, Dabang. Impact of stratospheric aerosol intervention geoengineering on surface air temperature in China: a surface energy budget perspective[J],2022,22(11):14.
APA	Liu, Zhaochen,Lang, Xianmei,&Jiang, Dabang.(2022).Impact of stratospheric aerosol intervention geoengineering on surface air temperature in China: a surface energy budget perspective.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(11),14.
MLA	Liu, Zhaochen,et al."Impact of stratospheric aerosol intervention geoengineering on surface air temperature in China: a surface energy budget perspective".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.11(2022):14.