Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019GL082034 |
Atmospheric Acetaldehyde: Importance of Air-Sea Exchange and a Missing Source in the Remote Troposphere | |
Wang, Siyuan1,2; Hornbrook, Rebecca S.2; Hills, Alan2; Emmons, Louisa K.2; Tilmes, Simone2,3; Lamarque, Jean-Francois2,3; Jimenez, Jose L.4,5; Campuzano-Jost, Pedro4,5; Nault, Enjamin A.4,5; Crounse, John D.6,7; Wennberg, Paul O.6,7; Kim, Michelle6,7; Allen, Hannah6,7; Ryerson, Thomas B.8; Thompson, Chelsea R.5,8; Peischl, Jeff5,8; Moore, Fred8; Nance, David8; Hall, Brad8; Elkins, James8; Tanner, David9; Huey, L. Gregory9; Hall, Samuel R.2; Ullmann, Kirk2; Orlando, John J.2; Tyndall, Geoff S.2; Flocke, Frank M.2; Ray, Eric8; Hanisco, Thomas F.10; Wolfe, Glenn M.10,11; St Clair, Jason10,11; Commane, Roisin12,13; Daube, Bruce12; Barletta, Barbara14; Blake, Donald R.14; Weinzierl, Bernadett15; Dollner, Maximilian15; Conley, Andrew2; Vitt, Francis2; Wofsy, Steven C.12; Riemer, Daniel D.16; Apel, Eric C.2 | |
2019-05-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
卷号 | 46期号:10页码:5601-5613 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Austria |
英文摘要 | We report airborne measurements of acetaldehyde (CH3CHO) during the first and second deployments of the National Aeronautics and Space Administration Atmospheric Tomography Mission (ATom). The budget of CH3CHO is examined using the Community Atmospheric Model with chemistry (CAM-chem), with a newly developed online air-sea exchange module. The upper limit of the global ocean net emission of CH3CHO is estimated to be 34 Tg/a (42 Tg/a if considering bubble-mediated transfer), and the ocean impacts on tropospheric CH3CHO are mostly confined to the marine boundary layer. Our analysis suggests that there is an unaccounted CH3CHO source in the remote troposphere and that organic aerosols can only provide a fraction of this missing source. We propose that peroxyacetic acid is an ideal indicator of the rapid CH3CHO production in the remote troposphere. The higher-than-expected CH3CHO measurements represent a missing sink of hydroxyl radicals (and halogen radical) in current chemistry-climate models. Plain Language summary The Earth's atmosphere and its ability to self-regulate and cleanse itself is dependent on a complex interplay of trace chemical species, some of which are emitted from the biosphere, while others are from human activities or fires. One of these key species, acetaldehyde, was measured as part of the recent Atmospheric Tomography Mission, an aircraft (National Aeronautics and Space Administration DC-8) experiment transecting the lengths of the Pacific and Atlantic Oceans during two seasons, measuring greenhouse gases and chemically reactive gases and particles. These measurements allow us to test our ability to model the chemical state of the atmosphere. The results indicate that the ocean is a large source of acetaldehyde and the analysis here suggests additional mechanisms that narrow the gap between observations and simulations but also reveal that an additional unexplained source or sources remain(s) in the remote free troposphere. It is critical to understand this missing carbon source because it has significant implications for understanding the cycle of oxidants which, in turn, provide for the means of removing (cleaning) trace gases including methane, an important greenhouse gas, from the atmosphere. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000471237500066 |
WOS关键词 | VOLATILE ORGANIC-COMPOUNDS ; INDUCED FLUORESCENCE INSTRUMENT ; PARTICLE-SIZE DISTRIBUTIONS ; IN-SITU ; CARBONYL-COMPOUNDS ; HIGH-RESOLUTION ; GAS-EXCHANGE ; HETEROGENEOUS REACTION ; BOUNDARY-LAYER ; MODEL |
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/183429 |
专题 | 气候变化 |
作者单位 | 1.Natl Ctr Atmospher Res, Adv Study Program, POB 3000, Boulder, CO 80307 USA; 2.Natl Ctr Atmospher Res, Atmospher Chem Observat & Modeling, POB 3000, Boulder, CO 80307 USA; 3.Natl Ctr Atmospher Res, Climate & Global Dynam, POB 3000, Boulder, CO 80307 USA; 4.Univ Colorado, Dept Chem & Biochem, Campus Box 215, Boulder, CO 80309 USA; 5.Univ Colorado, Cooperat Inst Res Environm Sci, Boulder, CO 80309 USA; 6.CALTECH, Div Engn & Appl Sci, Pasadena, CA 91125 USA; 7.CALTECH, Div Geol & Planetary Sci, Pasadena, CA 91125 USA; 8.NOAA, Earth Syst Res Lab, Boulder, CO USA; 9.Georgia Inst Technol, Sch Earth & Atmospher Sci, Atlanta, GA 30332 USA; 10.Natl Aeronaut & Space Adm, Goddard Space Flight Ctr, Greenbelt, MD USA; 11.Univ Maryland, Joint Ctr Earth Syst Technol, Baltimore, MD 21201 USA; 12.Harvard Univ, Dept Earth & Planetary Sci, Harvard Sch Engn & Appl Sci, 20 Oxford St, Cambridge, MA 02138 USA; 13.Columbia Univ, Lamont Doherty Earth Observ, Dept Earth & Environm Sci, New York, NY USA; 14.Univ Calif Irvine, Dept Chem, Irvine, CA 92717 USA; 15.Univ Vienna, Fac Phys Aerosol Phys & Environm Phys, Vienna, Austria; 16.Apel Riemer Environm Inc, Miami, FL USA |
推荐引用方式 GB/T 7714 | Wang, Siyuan,Hornbrook, Rebecca S.,Hills, Alan,et al. Atmospheric Acetaldehyde: Importance of Air-Sea Exchange and a Missing Source in the Remote Troposphere[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(10):5601-5613. |
APA | Wang, Siyuan.,Hornbrook, Rebecca S..,Hills, Alan.,Emmons, Louisa K..,Tilmes, Simone.,...&Apel, Eric C..(2019).Atmospheric Acetaldehyde: Importance of Air-Sea Exchange and a Missing Source in the Remote Troposphere.GEOPHYSICAL RESEARCH LETTERS,46(10),5601-5613. |
MLA | Wang, Siyuan,et al."Atmospheric Acetaldehyde: Importance of Air-Sea Exchange and a Missing Source in the Remote Troposphere".GEOPHYSICAL RESEARCH LETTERS 46.10(2019):5601-5613. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论