Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018GL080544 |
Efficient In-Cloud Removal of Aerosols by Deep Convection | |
Yu, Pengfei1,2,3; Froyd, Karl D.1,2; Portmann, Robert W.2; Toon, Owen B.4,5; Freitas, Saulo R.6; Bardeen, Charles G.7; Brock, Charles2; Fan, Tianyi8; Gao, Ru-Shan2; Katich, Joseph M.1,2; Kupc, Agnieszka1,2,9; Liu, Shang10; Maloney, Christopher4,5; Murphy, Daniel M.2; Rosenlof, Karen H.2; Schill, Gregory1,2; Schwarz, Joshua P.2; Williamson, Christina1,2 | |
2019-01-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
卷号 | 46期号:2页码:1061-1069 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Peoples R China; Austria |
英文摘要 | Convective systems dominate the vertical transport of aerosols and trace gases. The most recent in situ aerosol measurements presented here show that the concentrations of primary aerosols including sea salt and black carbon drop by factors of 10 to 10,000 from the surface to the upper troposphere. In this study we show that the default convective transport scheme in the National Science Foundation/Department of Energy Community Earth System Model results in a high bias of 10-1,000 times the measured aerosol mass for black carbon and sea salt in the middle and upper troposphere. A modified transport scheme, which considers aerosol activation from entrained air above the cloud base and aerosol-cloud interaction associated with convection, dramatically improves model agreement with in situ measurements suggesting that deep convection can efficiently remove primary aerosols. We suggest that models that fail to consider secondary activation may overestimate black carbon's radiative forcing by a factor of 2. Plain Language Summary Convective systems dominate the vertical transport of aerosols and trace gases. The most recent global aerosol measurements show that the concentrations of primary aerosols including sea salt and black carbon drop by a factor of 10-10,000 from the surface to the upper troposphere. In this study, we show that a climate model overestimates black carbon and sea salt in the middle and upper troposphere by factors of 10-1,000 when compared with observations from a number of field campaigns. The default transport scheme in a climate model not only significantly overestimates black carbon and sea salt in the upper troposphere but also overestimates the total aerosol mass budget by a factor of 3 in the global middle and upper troposphere. We modify the convective transport scheme in the climate model by including aerosol activation and removal processes above the cloud base. The new convective transport scheme dramatically improves model performance on the global aerosol budget in the middle and upper troposphere. We show in this study that models fail to consider aerosol secondary activation from the entrained air may overestimate black carbon's radiative forcing by a factor of two. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000458607400059 |
WOS关键词 | TROPOSPHERIC AEROSOL ; TRACE GASES ; CLIMATE SIMULATIONS ; SENSITIVITY ; MODEL ; REPRESENTATION ; PARAMETERIZATION ; DISTRIBUTIONS ; SPECTROMETER ; STRATOSPHERE |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/25816 |
专题 | 气候变化 |
作者单位 | 1.Univ Colorado, Cooperat Inst Res Environm Sci, Boulder, CO 80309 USA; 2.NOAA, Earth Syst Res Lab, Boulder, CO 80305 USA; 3.Jinan Univ, Inst Environm & Climate Res, Guangzhou, Guangdong, Peoples R China; 4.Univ Colorado, Dept Atmospher & Ocean Sci, Boulder, CO 80309 USA; 5.Univ Colorado, Lab Atmospher & Space Phys, Boulder, CO 80309 USA; 6.Univ Space Res Assoc, Goddard Earth Sci Technol & Res, Columbia, MD USA; 7.Natl Ctr Atmospher Res, Atmospher Chem Div, POB 3000, Boulder, CO 80307 USA; 8.Beijing Normal Univ, Coll Global Change & Earth Syst Sci, Beijing, Peoples R China; 9.Univ Vienna, Fac Phys, Vienna, Austria; 10.Univ Sci & Technol China, Sch Earth & Space Sci, Hefei, Peoples R China |
推荐引用方式 GB/T 7714 | Yu, Pengfei,Froyd, Karl D.,Portmann, Robert W.,et al. Efficient In-Cloud Removal of Aerosols by Deep Convection[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(2):1061-1069. |
APA | Yu, Pengfei.,Froyd, Karl D..,Portmann, Robert W..,Toon, Owen B..,Freitas, Saulo R..,...&Williamson, Christina.(2019).Efficient In-Cloud Removal of Aerosols by Deep Convection.GEOPHYSICAL RESEARCH LETTERS,46(2),1061-1069. |
MLA | Yu, Pengfei,et al."Efficient In-Cloud Removal of Aerosols by Deep Convection".GEOPHYSICAL RESEARCH LETTERS 46.2(2019):1061-1069. |
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