Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-18-7669-2018 |
Strong impacts on aerosol indirect effects from historical oxidant changes | |
Karset, Inger Helene Hafsahl1; Berntsen, Terje Koren1,2; Storelvmo, Trude1; Alterskjaer, Kari2; Grini, Alf3; Olivie, Dirk3; Kirkevag, Alf3; Seland, Oyvind3; Iversen, Trond3; Schulz, Michael3 | |
2018-06-01 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
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ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2018 |
卷号 | 18期号:10页码:7669-7690 |
文章类型 | Article |
语种 | 英语 |
国家 | Norway |
英文摘要 | Uncertainties in effective radiative forcings through aerosol-cloud interactions (ERFaci, also called aerosol indirect effects) contribute strongly to the uncertainty in the total preindustrial-to-present-day anthropogenic forcing. Some forcing estimates of the total aerosol indirect effect are so negative that they even offset the greenhouse gas forcing. This study highlights the role of oxidants in modeling of preindustrial-to-present-day aerosol indirect effects. We argue that the aerosol precursor gases should be exposed to oxidants of its era to get a more correct representation of secondary aerosol formation. Our model simulations show that the total aerosol indirect effect changes from -1.32 to -1.07 W m(-2) when the precursor gases in the preindustrial simulation are exposed to preindustrial instead of present-day oxidants. This happens because of a brightening of the clouds in the preindustrial simulation, mainly due to large changes in the nitrate radical (NO3). The weaker oxidative power of the preindustrial atmosphere extends the lifetime of the precursor gases, enabling them to be transported higher up in the atmosphere and towards more remote areas where the susceptibility of the cloud albedo to aerosol changes is high. The oxidation changes also shift the importance of different chemical reactions and produce more condensate, thus increasing the size of the aerosols and making it easier for them to activate as cloud condensation nuclei. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000433963400005 |
WOS关键词 | COMMUNITY ATMOSPHERE MODEL ; EARTH SYSTEM MODEL ; INTERCOMPARISON PROJECT ACCMIP ; STRATIFORM CLOUD MICROPHYSICS ; HETEROGENEOUS ICE NUCLEATION ; CLIMATE MODEL ; PARTICLE FORMATION ; ORGANIC AEROSOL ; SULFURIC-ACID ; PREINDUSTRIAL TIMES |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/27312 |
专题 | 地球科学 |
作者单位 | 1.Univ Oslo, Dept Geosci, Sect Meteorol & Oceanog, Oslo, Norway; 2.CICERO Ctr Int Climate Res, Oslo, Norway; 3.Norwegian Meteorol Inst, Oslo, Norway |
推荐引用方式 GB/T 7714 | Karset, Inger Helene Hafsahl,Berntsen, Terje Koren,Storelvmo, Trude,et al. Strong impacts on aerosol indirect effects from historical oxidant changes[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2018,18(10):7669-7690. |
APA | Karset, Inger Helene Hafsahl.,Berntsen, Terje Koren.,Storelvmo, Trude.,Alterskjaer, Kari.,Grini, Alf.,...&Schulz, Michael.(2018).Strong impacts on aerosol indirect effects from historical oxidant changes.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(10),7669-7690. |
MLA | Karset, Inger Helene Hafsahl,et al."Strong impacts on aerosol indirect effects from historical oxidant changes".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.10(2018):7669-7690. |
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