干旱区生态环境知识资源中心(Arid): Evaluation of the CMIP6 planetary albedo climatology using satellite observations

Arid

DOI	10.1007/s00382-020-05277-4
	Evaluation of the CMIP6 planetary albedo climatology using satellite observations
	Jian, Bida; Li, Jiming; Zhao, Yuxin; He, Yongli; Wang, Jing; Huang, Jianping
通讯作者	Li, Jiming
来源期刊	CLIMATE DYNAMICS
ISSN	0930-7575
EISSN	1432-0894
出版年	2020
卷号	54 期号:11-12 页码:5145-5161
英文摘要	The Earth's planetary albedo (PA) has an essential impact on the global radiation budget. Based on 14 years of monthly data from the Clouds and the Earth's Radiant Energy System energy balanced and filled (CERES-EBAF) Ed4.1 dataset and atmosphere-only simulations of the Coupled Model Intercomparison Project Phase6 (CMIP6/AMIP), this study investigates the ability of CMIP6/AMIP model in reproducing the observed inter-month changes, annual cycle and trend of PA at near-global and regional scales. Statistical results indicate that some persistent biases in the previous models continue to exist in the CMIP6 models; however, some progresses have been made. In CMIP6/AMIP, large negative correlations for PA between the model ensemble mean and observation are addressed over the subtropical stratocumulus regions. In addition, the simulation of PA in drylands and tropical oceans remains a challenge in CMIP6 models. Over the most regions, PA biases are governed by cloud albedo forcing biases. These results demonstrate the importance of improving cloud process simulations for accurately representing the PA in models. For the annual cycles, the model ensemble mean captures the difference in amplitude between the two peak values of PA (June and December), as well as the phase of the seasonal cycle, despite PA is systematically overestimated. The differences between different terrestrial climatic regions are also examined. Results indicate that the relative biases of PA are greatest in semi-arid (2.2%) and semi-humid (2.8%) regions, whereas the minimum relative bias occurs in arid regions (0.3%) due to compensating errors.
英文关键词	Planetary albedo CMIP6 Satellite observations
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000530181800001
WOS关键词	SURFACE ALBEDO ; CLOUD OVERLAP ; MODELS ; CHINA ; SENSITIVITY ; RADIATION ; DYNAMICS ; AEROSOLS ; IMPACT ; BIASES
WOS类目	Meteorology & Atmospheric Sciences
WOS研究方向	Meteorology & Atmospheric Sciences
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/319052
作者单位	Lanzhou Univ, Coll Atmospher Sci, Key Lab Semiarid Climate Change, Minist Educ, Lanzhou, Peoples R China
推荐引用方式 GB/T 7714	Jian, Bida,Li, Jiming,Zhao, Yuxin,et al. Evaluation of the CMIP6 planetary albedo climatology using satellite observations[J]. 兰州大学,2020,54(11-12):5145-5161.
APA	Jian, Bida,Li, Jiming,Zhao, Yuxin,He, Yongli,Wang, Jing,&Huang, Jianping.(2020).Evaluation of the CMIP6 planetary albedo climatology using satellite observations.CLIMATE DYNAMICS,54(11-12),5145-5161.
MLA	Jian, Bida,et al."Evaluation of the CMIP6 planetary albedo climatology using satellite observations".CLIMATE DYNAMICS 54.11-12(2020):5145-5161.