气候变化领域集成服务门户(CCPortal): Global Radiative Impacts of Black Carbon Acting as Ice Nucleating Particles

CCPortal

DOI	10.1029/2020GL089056
	Global Radiative Impacts of Black Carbon Acting as Ice Nucleating Particles
	McGraw Z.; Storelvmo T.; Samset B.H.; Stjern C.W.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:20
英文摘要	Black carbon (BC) aerosols from incomplete combustion generally warm the climate, but the magnitudes of their various interactions with climate are still uncertain. A key knowledge gap is their role as ice nucleating particles (INPs), enabling ice formation in clouds. Here we assess the global radiative impacts of BC acting as INPs, using simulations with the Community Earth System Model 2 climate model updated to include new laboratory-based ice nucleation parameterizations. Overall, we find a moderate cooling through changes to stratiform cirrus clouds, counteracting the well-known net warming from BC's direct scattering and absorption of radiation. Our best estimates indicate that BC INPs generally thin cirrus by indirectly inhibiting the freezing of solution aerosol, with a global net radiative impact of −0.13 ± 0.07 W/m2. Sensitivity tests of BC amounts and ice nucleating efficiencies, and uncertainties in the environment where ice crystals form, show a potential range of impacts from −0.30 to +0.02 W/m2. ©2020. The Authors.
英文关键词	Absorption cooling; Aerosols; Carbon; Climate models; Clouds; Laboratories; Black carbon aerosol; Earth system model; Ice nucleation; Incomplete combustion; Potential range; Radiative impacts; Scattering and absorption; Sensitivity tests; Ice; aerosol; black carbon; cirrus; climate modeling; cooling; net radiation; scattering; stratiform cloud
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169572
作者单位	Department of Geosciences, University of Oslo, Oslo, Norway; Center for International Climate and Environmental Research-Oslo (CICERO), Oslo, Norway
推荐引用方式 GB/T 7714	McGraw Z.,Storelvmo T.,Samset B.H.,et al. Global Radiative Impacts of Black Carbon Acting as Ice Nucleating Particles[J],2020,47(20).
APA	McGraw Z.,Storelvmo T.,Samset B.H.,&Stjern C.W..(2020).Global Radiative Impacts of Black Carbon Acting as Ice Nucleating Particles.Geophysical Research Letters,47(20).
MLA	McGraw Z.,et al."Global Radiative Impacts of Black Carbon Acting as Ice Nucleating Particles".Geophysical Research Letters 47.20(2020).