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DOI | 10.1073/pnas.1919723117 |
Radiative absorption enhancements by black carbon controlled by particle-to-particle heterogeneity in composition | |
Fierce, Laura1; Onasch, Timothy B.2,3; Cappa, Christopher D.4; Mazzoleni, Claudio5,6; China, Swarup7; Bhandari, Janarjan5,6; Davidovits, Paul3; Al Fischer, D.8,9; Helgestad, Taylor4,10; Lambe, Andrew T.2; Sedlacek, Arthur J., III1; Smith, Geoffrey D.8; Wolff, Lindsay3 | |
2020-03-10 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA |
ISSN | 0027-8424 |
出版年 | 2020 |
卷号 | 117期号:10页码:5196-5203 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Black carbon (BC) absorbs solar radiation, leading to a strong but uncertain warming effect on climate. A key challenge in modeling and quantifying BC's radiative effect on climate is predicting enhancements in light absorption that result from internal mixing between BC and other aerosol components. Modeling and laboratory studies show that BC, when mixed with other aerosol components, absorbs more strongly than pure, uncoated BC; however, some ambient observations suggest more variable and weaker absorption enhancement. We show that the lower-than-expected enhancements in ambient measurements result from a combination of two factors. First, the often used spherical, concentric core-shell approximation generally overestimates the absorption by BC. Second, and more importantly, inadequate consideration of heterogeneity in particle-to-particle composition engenders substantial overestimation in absorption by the total particle population, with greater heterogeneity associated with larger model-measurement differences. We show that accounting for these two effects-variability in per-particle composition and deviations from the core-shell approximation-reconciles absorption enhancement predictions with laboratory and field observations and resolves the apparent discrepancy. Furthermore, our consistent model framework provides a path forward for improving predictions of BC's radiative effect on climate. |
英文关键词 | black carbon direct radiative forcing absorption enhancement aerosol mixing state |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000519530400022 |
WOS关键词 | SECONDARY ORGANIC AEROSOL ; CONDENSATION NUCLEI ACTIVITY ; MIXING STATE ; OPTICAL-PROPERTIES ; LIGHT-ABSORPTION ; BROWN CARBON ; AMBIENT BLACK ; MODEL ; CALIFORNIA ; MORPHOLOGY |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
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/249585 |
专题 | 地球科学 |
作者单位 | 1.Brookhaven Natl Lab, Dept Environm & Climate Sci, Upton, NY 11961 USA; 2.Aerodyne Res Inc, Ctr Aerosol & Cloud Chem, Billerica, MA 02467 USA; 3.Boston Coll, Dept Chem, Chestnut Hill, MA 01821 USA; 4.Univ Calif Davis, Dept Civil & Environm Engn, Davis, CA 95616 USA; 5.Michigan Technol Univ, Dept Phys, Houghton, MI 49931 USA; 6.Michigan Technol Univ, Atmospher Sci Program, Houghton, MI 49931 USA; 7.Pacific Northwest Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA; 8.Univ Georgia, Dept Chem, Athens, GA 30602 USA; 9.Western Carolina Univ, Dept Chem & Phys, Cullowhee, NC 28723 USA; 10.Calif Air Resources Board, Air Qual Planning & Sci Div, Sacramento, CA 95814 USA |
推荐引用方式 GB/T 7714 | Fierce, Laura,Onasch, Timothy B.,Cappa, Christopher D.,et al. Radiative absorption enhancements by black carbon controlled by particle-to-particle heterogeneity in composition[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2020,117(10):5196-5203. |
APA | Fierce, Laura.,Onasch, Timothy B..,Cappa, Christopher D..,Mazzoleni, Claudio.,China, Swarup.,...&Wolff, Lindsay.(2020).Radiative absorption enhancements by black carbon controlled by particle-to-particle heterogeneity in composition.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,117(10),5196-5203. |
MLA | Fierce, Laura,et al."Radiative absorption enhancements by black carbon controlled by particle-to-particle heterogeneity in composition".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 117.10(2020):5196-5203. |
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