气候变化领域集成服务门户(CCPortal): Climate Forcing and Trends of Organic Aerosols in the Community Earth System Model (CESM2)

CCPortal

DOI	10.1029/2019MS001827
	Climate Forcing and Trends of Organic Aerosols in the Community Earth System Model (CESM2)
	Tilmes S.; Hodzic A.; Emmons L.K.; Mills M.J.; Gettelman A.; Kinnison D.E.; Park M.; Lamarque J.-F.; Vitt F.; Shrivastava M.; Campuzano-Jost P.; Jimenez J.L.; Liu X.
发表日期	2019
ISSN	19422466
起始页码	4323
结束页码	4351
卷号	11 期号:12
英文摘要	The Community Earth System Model version 2 (CESM2) includes three main atmospheric configurations: the Community Atmosphere Model version 6 (CAM6) with simplified chemistry and a simplified organic aerosol (OA) scheme, CAM6 with comprehensive tropospheric and stratospheric chemistry representation (CAM6-chem), and the Whole Atmosphere Community Climate Model version 6 (WACCM6). Both, CAM6-chem and WACCM6 include a more comprehensive secondary organic aerosols (SOA) approach using the Volatility Basis Set (VBS) scheme and prognostic stratospheric aerosols. This paper describes the different OA schemes available in the different atmospheric configurations of CESM2 and discusses differences in aerosol burden and resulting climate forcings. Derived OA burden and trends differ due to differences in OA formation using the different approaches. Regional differences in Aerosol Optical Depth with larger values using the comprehensive approach occur over SOA source regions. Stronger increasing SOA trends between 1960 and 2015 in WACCM6 compared to CAM6 are due to increasing biogenic emissions aligned with increasing surface temperatures. Using the comprehensive SOA approach further leads to improved comparisons to aircraft observations and SOA formation of ≈143 Tg/yr. We further use WACCM6 to identify source contributions of OA from biogenic, fossil fuel, and biomass burning emissions, to quantify SOA amounts and trends from these sources. Increasing SOA trends between 1960 and 2015 are the result of increasing biogenic emissions aligned with increasing surface temperatures. Biogenic emissions are at least two thirds of the total SOA burden. In addition, SOA source contributions from fossil fuel emissions become more important, with largest values over Southeast Asia. The estimated total anthropogenic forcing of OA in WACCM6 for 1995–2010 conditions is −0.43 W/m2, mostly from the aerosol direct effect. ©2019. The Authors.
英文关键词	CESM2; organic aerosols; WACCM6
语种	英语
scopus关键词	Aerosols; Atmospheric chemistry; Atmospheric temperature; Fossil fuels; Surface properties; Biomass burning emissions; CESM2; Community atmosphere model; Organic aerosol; Secondary organic aerosols; Stratospheric chemistry; WACCM6; Whole atmosphere community climate models; Climate models; aerosol; aircraft; atmospheric modeling; biogenic emission; biomass burning; climate forcing; fossil fuel; Southeast Asia
来源期刊	Journal of Advances in Modeling Earth Systems
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156806
作者单位	Atmospheric Chemistry, Observations and Modeling Laboratory, National Center for Atmospheric Research, Boulder, CO, United States; Climate and Global Dynamics Laboratory, National Center for Atmospheric Research, Boulder, CO, United States; Atmospheric Sciences and Global Change Division, Pacific Northwest National Laboratory, Richland, WA, United States; Cooperative Institute for Research in Environmental Sciences (CIRES), University of Colorado Boulder, Boulder, CO, United States; Department of Chemistry, University of Colorado Boulder, Boulder, CO, United States; Department of Atmospheric Science, University of Wyoming, Laramie, WY, United States; Now at Department of Atmospheric Sciences, Texas A&M University, College Station, TX, United States
推荐引用方式 GB/T 7714	Tilmes S.,Hodzic A.,Emmons L.K.,et al. Climate Forcing and Trends of Organic Aerosols in the Community Earth System Model (CESM2)[J],2019,11(12).
APA	Tilmes S..,Hodzic A..,Emmons L.K..,Mills M.J..,Gettelman A..,...&Liu X..(2019).Climate Forcing and Trends of Organic Aerosols in the Community Earth System Model (CESM2).Journal of Advances in Modeling Earth Systems,11(12).
MLA	Tilmes S.,et al."Climate Forcing and Trends of Organic Aerosols in the Community Earth System Model (CESM2)".Journal of Advances in Modeling Earth Systems 11.12(2019).