Observed NO/NO2 Ratios in the Upper Troposphere Imply Errors in NO-NO2-O-3 Cycling Kinetics or an Unaccounted NOx Reservoir

doi:10.1029/2018GL077728

GSTDTAP > 气候变化

DOI	10.1029/2018GL077728
	Observed NO/NO2 Ratios in the Upper Troposphere Imply Errors in NO-NO2-O-3 Cycling Kinetics or an Unaccounted NOx Reservoir
	Silvern, R. F.1; Jacob, D. J.1,2; Travis, K. R.3; Sherwen, T.4,5; Evans, M. J.4,5; Cohen, R. C.6,7; Laughner, J. L.6; Hall, S. R.8; Ullmann, K.; Crounse, J. D.9; Wennberg, P. O.9,10; Peischl, J.11,12; Pollack, I. B.13
	2018-05-16
发表期刊	GEOPHYSICAL RESEARCH LETTERS
ISSN	0094-8276
EISSN	1944-8007
出版年	2018
卷号	45 期号:9 页码:4466-4474
文章类型	Article
语种	英语
国家	USA; England
英文摘要	Observations from the SEAC(4)RS aircraft campaign over the southeast United States in August-September 2013 show NO/NO2 concentration ratios in the upper troposphere that are approximately half of photochemical equilibrium values computed from Jet Propulsion Laboratory (JPL) kinetic data. One possible explanation is the presence of labile NOx reservoir species, presumably organic, decomposing thermally to NO2 in the instrument. The NO2 instrument corrects for this artifact from known labile HNO4 and CH3O2NO2 NOx reservoirs. To bridge the gap between measured and simulated NO2, additional unaccounted labile NOx reservoir species would have to be present at a mean concentration of similar to 40 ppt for the SEAC(4)RS conditions (compared with 197ppt for NOx). An alternative explanation is error in the low-temperature rate constant for the NO+O-3 reaction (30% 1-sigma uncertainty in JPL at 240 K) and/or in the spectroscopic data for NO2 photolysis (20% 1-sigma uncertainty). Resolving this discrepancy is important for understanding global budgets of tropospheric oxidants and for interpreting satellite observations of tropospheric NO2 columns.
英文关键词	NOx upper troposphere SEAC(4)RS GEOS-Chem kinetics
领域	气候变化
收录类别	SCI-E
WOS记录号	WOS:000434111700079
WOS关键词	INDUCED FLUORESCENCE DETECTION ; IN-SITU ; ATMOSPHERIC CHEMISTRY ; AIRBORNE OBSERVATIONS ; NITROGEN-OXIDES ; LIGHTNING NOX ; OZONE ; CONSTRAINTS ; CH3O2NO2 ; SYSTEM
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/28977
专题	气候变化
作者单位	1.Harvard Univ, Dept Earth & Planetary Sci, 20 Oxford St, Cambridge, MA 02138 USA; 2.Harvard Univ, John Paulson Sch Engn & Appl Sci, Cambridge, MA 02138 USA; 3.MIT, Dept Civil & Environm Engn, 77 Massachusetts Ave, Cambridge, MA 02139 USA; 4.Univ York, Dept Chem, Wolfson Atmospher Chem Labs, York, N Yorkshire, England; 5.Univ York, Nat Ctr Atmospher Sci, Dept Chem, York, N Yorkshire, England; 6.Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA; 7.Univ Calif Berkeley, Dept Earth & Planetary Sci, Berkeley, CA 94720 USA; 8.Natl Ctr Atmospher Res, Atmospher Chem Div, POB 3000, Boulder, CO 80307 USA; 9.CALTECH, Div Geol & Planetary Sci, Pasadena, CA 91125 USA; 10.CALTECH, Div Engn & Appl Sci, Pasadena, CA 91125 USA; 11.Univ Colorado Boulder, Cooperat Inst Res Environm Sci, Boulder, CO 80309 USA; 12.Natl Ocean & Atmospher Adm, Earth Syst Res Lab, Boulder, CO USA; 13.Colorado State Univ, Dept Atmospher Sci, Ft Collins, CO 80523 USA
推荐引用方式 GB/T 7714	Silvern, R. F.,Jacob, D. J.,Travis, K. R.,et al. Observed NO/NO2 Ratios in the Upper Troposphere Imply Errors in NO-NO2-O-3 Cycling Kinetics or an Unaccounted NOx Reservoir[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(9):4466-4474.
APA	Silvern, R. F..,Jacob, D. J..,Travis, K. R..,Sherwen, T..,Evans, M. J..,...&Pollack, I. B..(2018).Observed NO/NO2 Ratios in the Upper Troposphere Imply Errors in NO-NO2-O-3 Cycling Kinetics or an Unaccounted NOx Reservoir.GEOPHYSICAL RESEARCH LETTERS,45(9),4466-4474.
MLA	Silvern, R. F.,et al."Observed NO/NO2 Ratios in the Upper Troposphere Imply Errors in NO-NO2-O-3 Cycling Kinetics or an Unaccounted NOx Reservoir".GEOPHYSICAL RESEARCH LETTERS 45.9(2018):4466-4474.