globalchange  > 气候变化事实与影响
DOI: 10.1016/j.atmosenv.2017.05.049
Scopus记录号: 2-s2.0-85020766028
论文题名:
Impact of evolving isoprene mechanisms on simulated formaldehyde: An inter-comparison supported by in situ observations from SENEX
作者: Marvin M; R; , Wolfe G; M; , Salawitch R; J; , Canty T; P; , Roberts S; J; , Travis K; R; , Aikin K; C; , de Gouw J; A; , Graus M; , Hanisco T; F; , Holloway J; S; , Hübler G; , Kaiser J; , Keutsch F; N; , Peischl J; , Pollack I; B; , Roberts J; M; , Ryerson T; B; , Veres P; R; , Warneke C
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 164
起始页码: 325
结束页码: 336
语种: 英语
英文关键词: Air quality ; Box model ; Formaldehyde ; Gas-phase chemical mechanisms ; Isoprene ; SENEX
Scopus关键词: Air quality ; Carbon ; Computational efficiency ; Formaldehyde ; Mixing ; Oxidation ; Ozone ; Air quality modeling ; Box models ; Carbon bond mechanisms ; Chemical mechanism ; Master chemical mechanism ; Photochemical box model ; Satellite observations ; SENEX ; Isoprene ; formaldehyde ; isoprene ; ozone ; air quality ; EOS ; formaldehyde ; in situ measurement ; isoprene ; mixing ratio ; oxidation ; ozone ; photochemistry ; air quality ; aircraft ; Article ; controlled study ; gas ; oxidation ; photochemistry ; priority journal ; simulation ; uncertainty
Scopus学科分类: Environmental Science: Water Science and Technology ; Earth and Planetary Sciences: Earth-Surface Processes ; Environmental Science: Environmental Chemistry
英文摘要: Isoprene oxidation schemes vary greatly among gas-phase chemical mechanisms, with potentially significant ramifications for air quality modeling and interpretation of satellite observations in biogenic-rich regions. In this study, in situ observations from the 2013 SENEX mission are combined with a constrained 0-D photochemical box model to evaluate isoprene chemistry among five commonly used gas-phase chemical mechanisms: CB05, CB6r2, MCMv3.2, MCMv3.3.1, and a recent version of GEOS-Chem. Mechanisms are evaluated and inter-compared with respect to formaldehyde (HCHO), a high-yield product of isoprene oxidation. Though underestimated by all considered mechanisms, observed HCHO mixing ratios are best reproduced by MCMv3.3.1 (normalized mean bias = −15%), followed by GEOS-Chem (−17%), MCMv3.2 (−25%), CB6r2 (−32%) and CB05 (−33%). Inter-comparison of HCHO production rates reveals that major restructuring of the isoprene oxidation scheme in the Carbon Bond mechanism increases HCHO production by only ∼5% in CB6r2 relative to CB05, while further refinement of the complex isoprene scheme in the Master Chemical Mechanism increases HCHO production by ∼16% in MCMv3.3.1 relative to MCMv3.2. The GEOS-Chem mechanism provides a good approximation of the explicit isoprene chemistry in MCMv3.3.1 and generally reproduces the magnitude and source distribution of HCHO production rates. We analytically derive improvements to the isoprene scheme in CB6r2 and incorporate these changes into a new mechanism called CB6r2-UMD, which is designed to preserve computational efficiency. The CB6r2-UMD mechanism mimics production of HCHO in MCMv3.3.1 and demonstrates good agreement with observed mixing ratios from SENEX (−14%). Improved simulation of HCHO also impacts modeled ozone: at ∼0.3 ppb NO, the ozone production rate increases ∼3% between CB6r2 and CB6r2-UMD, and rises another ∼4% when HCHO is constrained to match observations. © 2017 Elsevier Ltd
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82750
Appears in Collections:气候变化事实与影响

Files in This Item:

There are no files associated with this item.


作者单位: Department of Chemistry and Biochemistry, University of Maryland College Park, College ParkMD, United States; Joint Center for Earth Systems Technology, University of Maryland Baltimore County, Baltimore, MD, United States; Atmospheric Chemistry and Dynamics Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD, United States; Department of Atmospheric and Oceanic Science, University of Maryland College Park, College ParkMD, United States; Earth System Science Interdisciplinary Center, University of Maryland College Park, College ParkMD, United States; School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, United States; Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA, United States; Cooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, Boulder, CO, United States; Chemical Sciences Division, NOAA Earth System Research Laboratory, Boulder, CO, United States; Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA, United States; Department of Atmospheric Science, Colorado State University, Fort Collins, CO, United States; Institute of Atmospheric and Cryospheric Sciences, University of Innsbruck, Innsbruck, Austria

Recommended Citation:
Marvin M,R,, Wolfe G,et al. Impact of evolving isoprene mechanisms on simulated formaldehyde: An inter-comparison supported by in situ observations from SENEX[J]. Atmospheric Environment,2017-01-01,164
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Marvin M]'s Articles
[R]'s Articles
[, Wolfe G]'s Articles
百度学术
Similar articles in Baidu Scholar
[Marvin M]'s Articles
[R]'s Articles
[, Wolfe G]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Marvin M]‘s Articles
[R]‘s Articles
[, Wolfe G]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.