globalchange  > 气候减缓与适应
DOI: 10.1029/2018JD028539
Scopus记录号: 2-s2.0-85050468879
论文题名:
Top-Down Estimates of NOx and CO Emissions From Washington, D.C.-Baltimore During the WINTER Campaign
作者: Salmon O.E.; Shepson P.B.; Ren X.; He H.; Hall D.L.; Dickerson R.R.; Stirm B.H.; Brown S.S.; Fibiger D.L.; McDuffie E.E.; Campos T.L.; Gurney K.R.; Thornton J.A.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期:14
起始页码: 7705
结束页码: 7724
语种: 英语
英文关键词: airborne mass balance ; CO ; NEI ; NOx ; urban emissions ; WINTER
英文摘要: Airborne mass balance experiments were conducted around the Washington, D.C.-Baltimore area using research aircraft from Purdue University and the University of Maryland to quantify emissions of nitrogen oxides (NOx = NO + NO2) and carbon monoxide (CO). The airborne mass balance experiments supported the Wintertime INvestigation of Transport, Emissions, and Reactivity (WINTER) campaign, an intensive airborne study of anthropogenic emissions along the Northeastern United States in February–March 2015, and the Fluxes of Atmospheric Greenhouse Gases in Maryland project which seeks to provide best estimates of anthropogenic emissions from the Washington, D.C.-Baltimore area. Top-down emission rates of NOx and CO estimated from the mass balance flights are compared with the Environmental Protection Agency's 2011 and 2014 National Emissions Inventory (NEI-11 and NEI-14). Inventory and observation-derived NOx emission rates are consistent within the measurement uncertainty. Observed CO emission rates are a factor of 2 lower than reported by the NEI. The NEI's accuracy has been evaluated for decades by studies of anthropogenic emissions, yet despite continuous inventory updates, observation-inventory discrepancies persist. WINTER NOx/CO2 enhancement ratios are consistent with inventories, but WINTER CO/NOx and CO/CO2 enhancement ratios are lower than those reported by other urban summertime studies, suggesting a strong influence of CO seasonal trends and/or nationwide CO reductions. There is a need for reliable observation-based criterion pollutant emission rate measurements independent of the NEI. Such determinations could be supplied by the community's reporting of sector-specific criteria pollutant/CO2 enhancement ratios and subsequent multiplication with currently available and forthcoming high-resolution CO2 inventories. ©2018. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113483
Appears in Collections:气候减缓与适应

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作者单位: Department of Chemistry, Purdue University, West Lafayette, IN, United States; Department of Earth, Atmospheric, and Planetary Sciences and Purdue Climate Change Research Center, Purdue University, West Lafayette, IN, United States; Air Resources Laboratory, National Oceanic and Atmospheric Administration (NOAA), College Park, MD, United States; Department of Atmospheric and Oceanic Science, University of Maryland, College Park, MD, United States; School of Aviation and Transportation Technology, Purdue University, West Lafayette, IN, United States; Earth System Research Laboratory Chemical Sciences Division, NOAA, Boulder, CO, United States; Department of Chemistry and Biochemistry, University of Colorado Boulder, Boulder, CO, United States; Now at California Air Resources Board, Sacramento, CA, United States; Cooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, Boulder, CO, United States; National Center for Atmospheric Research, Boulder, CO, United States; School of Life Sciences, Arizona State University, Tempe, AZ, United States; Department of Atmospheric Sciences, University of Washington, Seattle, WA, United States

Recommended Citation:
Salmon O.E.,Shepson P.B.,Ren X.,et al. Top-Down Estimates of NOx and CO Emissions From Washington, D.C.-Baltimore During the WINTER Campaign[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(14)
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