气候变化领域集成服务门户(CCPortal): Biomass burning aerosols in most climate models are too absorbing

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DOI	10.1038/s41467-020-20482-9
	Biomass burning aerosols in most climate models are too absorbing
	Brown H.; Liu X.; Pokhrel R.; Murphy S.; Lu Z.; Saleh R.; Mielonen T.; Kokkola H.; Bergman T.; Myhre G.; Skeie R.B.; Watson-Paris D.; Stier P.; Johnson B.; Bellouin N.; Schulz M.; Vakkari V.; Beukes J.P.; van Zyl P.G.; Liu S.; Chand D.
发表日期	2021
ISSN	2041-1723
卷号	12 期号:1
英文摘要	Uncertainty in the representation of biomass burning (BB) aerosol composition and optical properties in climate models contributes to a range in modeled aerosol effects on incoming solar radiation. Depending on the model, the top-of-the-atmosphere BB aerosol effect can range from cooling to warming. By relating aerosol absorption relative to extinction and carbonaceous aerosol composition from 12 observational datasets to nine state-of-the-art Earth system models/chemical transport models, we identify varying degrees of overestimation in BB aerosol absorptivity by these models. Modifications to BB aerosol refractive index, size, and mixing state improve the Community Atmosphere Model version 5 (CAM5) agreement with observations, leading to a global change in BB direct radiative effect of −0.07 W m−2, and regional changes of −2 W m−2 (Africa) and −0.5 W m−2 (South America/Temperate). Our findings suggest that current modeled BB contributes less to warming than previously thought, largely due to treatments of aerosol mixing state. © 2021, The Author(s).
语种	英语
scopus关键词	absorption; aerosol; Article; atmosphere; biomass; biomass burning aerosol; bleaching; chemical model; chemical modification; climate; climate change; climate warming; community atmosphere model version 5; controlled study; global change; particle size; photochemistry; refraction index; secondary organic aerosol; solar radiation
来源期刊	Nature Communications
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/250787
作者单位	Department of Atmospheric Science, University of Wyoming, Laramie, WY, United States; Department of Atmospheric Sciences, Texas A&M University, College Station, TX, United States; Department of Physics, North Carolina A&T State University, Greensboro, NC, United States; Air Quality and Climate Research Laboratory, University of Georgia, Athens, GA, United States; Finnish Meteorological Institute, Kuopio, FI-70211, Finland; Climate System Research, Finnish Meteorological Institute, Helsinki, FI-00101, Finland; Center for International Climate and Environmental Research – Oslo (CICERO), Oslo, Norway; Atmospheric, Oceanic and Planetary Physics, Department of Physics, University of Oxford, Oxford, United Kingdom; Met Office, Exeter, United Kingdom; Department of Meteorology, University of Reading, Reading, United Kingdom; Norwegian Meteorological Institute, Oslo, Norway; Finnish Meteorological Institute, Helsinki, FI-00101, Finland; Atmospheric Chemistry Research Group, Chemical Resource Beneficiation, North-...
推荐引用方式 GB/T 7714	Brown H.,Liu X.,Pokhrel R.,et al. Biomass burning aerosols in most climate models are too absorbing[J],2021,12(1).
APA	Brown H..,Liu X..,Pokhrel R..,Murphy S..,Lu Z..,...&Chand D..(2021).Biomass burning aerosols in most climate models are too absorbing.Nature Communications,12(1).
MLA	Brown H.,et al."Biomass burning aerosols in most climate models are too absorbing".Nature Communications 12.1(2021).