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DOI	10.5194/acp-20-613-2020
	Surprising similarities in model and observational aerosol radiative forcing estimates
	Gryspeerdt E.; Mülmenstädt J.; Gettelman A.; Malavelle F.F.; Morrison H.; Neubauer D.; Partridge D.G.; Stier P.; Takemura T.; Wang H.; Wang M.; Zhang K.
发表日期	2020
ISSN	1680-7316
起始页码	613
结束页码	623
卷号	20 期号:1
英文摘要	The radiative forcing from aerosols (particularly through their interaction with clouds) remains one of the most uncertain components of the human forcing of the climate. Observation-based studies have typically found a smaller aerosol effective radiative forcing than in model simulations and were given preferential weighting in the Intergovernmental Panel on Climate Change (IPCC) Fifth Assessment Report (AR5). With their own sources of uncertainty, it is not clear that observation-based estimates are more reliable. Understanding the source of the model and observational differences is thus vital to reduce uncertainty in the impact of aerosols on the climate. These reported discrepancies arise from the different methods of separating the components of aerosol forcing used in model and observational studies. Applying the observational decomposition to global climate model (GCM) output, the two different lines of evidence are surprisingly similar, with a much better agreement on the magnitude of aerosol impacts on cloud properties. Cloud adjustments remain a significant source of uncertainty, particularly for ice clouds. However, they are consistent with the uncertainty from observation-based methods, with the liquid water path adjustment usually enhancing the Twomey effect by less than 50%. Depending on different sets of assumptions, this work suggests that model and observation-based estimates could be more equally weighted in future synthesis studies. © Author(s) 2020.
语种	英语
scopus关键词	aerosol; atmospheric modeling; climate modeling; cloud microphysics; computer simulation; global climate; Intergovernmental Panel on Climate Change; radiative forcing
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/141604
作者单位	Space and Atmospheric Physics Group, Imperial College London, London, United Kingdom; Institute for Meteorology, Universität Leipzig, Leipzig, Germany; National Center for Atmospheric Research, Boulder, CO, United States; College of Engineering Mathematics and Physical Sciences, University of Exeter, Exeter, United Kingdom; Met Office, Fitzroy Road, Exeter, United Kingdom; Institute for Atmospheric and Climate Science, ETH Zurich, Zurich, Switzerland; Atmospheric, Oceanic and Planetary Physics, Department of Physics, University of Oxford, Oxford, United Kingdom; Research Institute for Applied Mathematics, Kyushu University, Fukuoka, Japan; Atmospheric Sciences and Global Change Division, Pacific Northwest National Laboratory, Richland, GA, United States; Institute for Climate and Global Change Research, Nanjing University, Nanjing, China; School of Atmospheric Sciences, Nanjing University, Nanjing, China; Collaborative Innovation Center of Climate Change, Nanjing, China
推荐引用方式 GB/T 7714	Gryspeerdt E.,Mülmenstädt J.,Gettelman A.,et al. Surprising similarities in model and observational aerosol radiative forcing estimates[J],2020,20(1).
APA	Gryspeerdt E..,Mülmenstädt J..,Gettelman A..,Malavelle F.F..,Morrison H..,...&Zhang K..(2020).Surprising similarities in model and observational aerosol radiative forcing estimates.Atmospheric Chemistry and Physics,20(1).
MLA	Gryspeerdt E.,et al."Surprising similarities in model and observational aerosol radiative forcing estimates".Atmospheric Chemistry and Physics 20.1(2020).