NO(y) partitioning from measurements of nitrogen and hydrogen radicals in the upper troposphere

E. R. Keim, S. A. McKeen, R. S. Gao, S. G. Donnelly, R. C. Wamsley, L. A. Del Negro, D. W. Fahey, T. F. Hanisco, E. J. Lanzendorf, M. H. Proffitt, J. J. Margitan, E. J. Hintsa, L. Jaeglé, C. R. Webster, R. D. May, D. C. Scott, R. J. Salawitch, J. C. Wilson, C. T. McElroy, Elliot L AtlasF. Flocke, T. P. Bui

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Recent studies using NO, NO(y), OH and HO2 (HO(X)) observations have postulated acetone and convection of peroxides as significant sources of HO(X) in the upper troposphere (UT). This work focuses on the effect these additional HO(X) sources have on the modeled NO(y) partitioning and comparisons of the modeled NO(x)/NO(y) ratio to observations. The measured NO(x)/NO(y) ratio is usually much higher than predicted regardless of the presence of acetone in the model. The exception occurs for air parcels having low NO(y) and O3 values. For these air parcels the measured NO(x)/NO(y) ratio is much lower than the calculated ratio unless acetone is included in the model. In all cases acetone increases the fraction of NO(y) that is peroxy acetyl nitrate (PAN) from typical values of much less than 0.1 to values as high as 0.35. Including acetone also reduces the scatter in a comparison between modeled and observed NO(x)/NO(y) ratios.

Original languageEnglish (US)
Pages (from-to)51-54
Number of pages4
JournalGeophysical Research Letters
Volume26
Issue number1
DOIs
StatePublished - Jan 1 1999
Externally publishedYes

Fingerprint

troposphere
acetone
partitioning
hydrogen
nitrogen
air
peroxides
nitrates
convection
nitrate
comparison

ASJC Scopus subject areas

  • Earth and Planetary Sciences (miscellaneous)

Cite this

Keim, E. R., McKeen, S. A., Gao, R. S., Donnelly, S. G., Wamsley, R. C., Del Negro, L. A., ... Bui, T. P. (1999). NO(y) partitioning from measurements of nitrogen and hydrogen radicals in the upper troposphere. Geophysical Research Letters, 26(1), 51-54. https://doi.org/10.1029/1998GL900219

NO(y) partitioning from measurements of nitrogen and hydrogen radicals in the upper troposphere. / Keim, E. R.; McKeen, S. A.; Gao, R. S.; Donnelly, S. G.; Wamsley, R. C.; Del Negro, L. A.; Fahey, D. W.; Hanisco, T. F.; Lanzendorf, E. J.; Proffitt, M. H.; Margitan, J. J.; Hintsa, E. J.; Jaeglé, L.; Webster, C. R.; May, R. D.; Scott, D. C.; Salawitch, R. J.; Wilson, J. C.; McElroy, C. T.; Atlas, Elliot L; Flocke, F.; Bui, T. P.

In: Geophysical Research Letters, Vol. 26, No. 1, 01.01.1999, p. 51-54.

Research output: Contribution to journalArticle

Keim, ER, McKeen, SA, Gao, RS, Donnelly, SG, Wamsley, RC, Del Negro, LA, Fahey, DW, Hanisco, TF, Lanzendorf, EJ, Proffitt, MH, Margitan, JJ, Hintsa, EJ, Jaeglé, L, Webster, CR, May, RD, Scott, DC, Salawitch, RJ, Wilson, JC, McElroy, CT, Atlas, EL, Flocke, F & Bui, TP 1999, 'NO(y) partitioning from measurements of nitrogen and hydrogen radicals in the upper troposphere', Geophysical Research Letters, vol. 26, no. 1, pp. 51-54. https://doi.org/10.1029/1998GL900219
Keim, E. R. ; McKeen, S. A. ; Gao, R. S. ; Donnelly, S. G. ; Wamsley, R. C. ; Del Negro, L. A. ; Fahey, D. W. ; Hanisco, T. F. ; Lanzendorf, E. J. ; Proffitt, M. H. ; Margitan, J. J. ; Hintsa, E. J. ; Jaeglé, L. ; Webster, C. R. ; May, R. D. ; Scott, D. C. ; Salawitch, R. J. ; Wilson, J. C. ; McElroy, C. T. ; Atlas, Elliot L ; Flocke, F. ; Bui, T. P. / NO(y) partitioning from measurements of nitrogen and hydrogen radicals in the upper troposphere. In: Geophysical Research Letters. 1999 ; Vol. 26, No. 1. pp. 51-54.
@article{372dd72ba904470281a17a44babef74f,
title = "NO(y) partitioning from measurements of nitrogen and hydrogen radicals in the upper troposphere",
abstract = "Recent studies using NO, NO(y), OH and HO2 (HO(X)) observations have postulated acetone and convection of peroxides as significant sources of HO(X) in the upper troposphere (UT). This work focuses on the effect these additional HO(X) sources have on the modeled NO(y) partitioning and comparisons of the modeled NO(x)/NO(y) ratio to observations. The measured NO(x)/NO(y) ratio is usually much higher than predicted regardless of the presence of acetone in the model. The exception occurs for air parcels having low NO(y) and O3 values. For these air parcels the measured NO(x)/NO(y) ratio is much lower than the calculated ratio unless acetone is included in the model. In all cases acetone increases the fraction of NO(y) that is peroxy acetyl nitrate (PAN) from typical values of much less than 0.1 to values as high as 0.35. Including acetone also reduces the scatter in a comparison between modeled and observed NO(x)/NO(y) ratios.",
author = "Keim, {E. R.} and McKeen, {S. A.} and Gao, {R. S.} and Donnelly, {S. G.} and Wamsley, {R. C.} and {Del Negro}, {L. A.} and Fahey, {D. W.} and Hanisco, {T. F.} and Lanzendorf, {E. J.} and Proffitt, {M. H.} and Margitan, {J. J.} and Hintsa, {E. J.} and L. Jaegl{\'e} and Webster, {C. R.} and May, {R. D.} and Scott, {D. C.} and Salawitch, {R. J.} and Wilson, {J. C.} and McElroy, {C. T.} and Atlas, {Elliot L} and F. Flocke and Bui, {T. P.}",
year = "1999",
month = "1",
day = "1",
doi = "10.1029/1998GL900219",
language = "English (US)",
volume = "26",
pages = "51--54",
journal = "Geophysical Research Letters",
issn = "0094-8276",
publisher = "American Geophysical Union",
number = "1",

}

TY - JOUR

T1 - NO(y) partitioning from measurements of nitrogen and hydrogen radicals in the upper troposphere

AU - Keim, E. R.

AU - McKeen, S. A.

AU - Gao, R. S.

AU - Donnelly, S. G.

AU - Wamsley, R. C.

AU - Del Negro, L. A.

AU - Fahey, D. W.

AU - Hanisco, T. F.

AU - Lanzendorf, E. J.

AU - Proffitt, M. H.

AU - Margitan, J. J.

AU - Hintsa, E. J.

AU - Jaeglé, L.

AU - Webster, C. R.

AU - May, R. D.

AU - Scott, D. C.

AU - Salawitch, R. J.

AU - Wilson, J. C.

AU - McElroy, C. T.

AU - Atlas, Elliot L

AU - Flocke, F.

AU - Bui, T. P.

PY - 1999/1/1

Y1 - 1999/1/1

N2 - Recent studies using NO, NO(y), OH and HO2 (HO(X)) observations have postulated acetone and convection of peroxides as significant sources of HO(X) in the upper troposphere (UT). This work focuses on the effect these additional HO(X) sources have on the modeled NO(y) partitioning and comparisons of the modeled NO(x)/NO(y) ratio to observations. The measured NO(x)/NO(y) ratio is usually much higher than predicted regardless of the presence of acetone in the model. The exception occurs for air parcels having low NO(y) and O3 values. For these air parcels the measured NO(x)/NO(y) ratio is much lower than the calculated ratio unless acetone is included in the model. In all cases acetone increases the fraction of NO(y) that is peroxy acetyl nitrate (PAN) from typical values of much less than 0.1 to values as high as 0.35. Including acetone also reduces the scatter in a comparison between modeled and observed NO(x)/NO(y) ratios.

AB - Recent studies using NO, NO(y), OH and HO2 (HO(X)) observations have postulated acetone and convection of peroxides as significant sources of HO(X) in the upper troposphere (UT). This work focuses on the effect these additional HO(X) sources have on the modeled NO(y) partitioning and comparisons of the modeled NO(x)/NO(y) ratio to observations. The measured NO(x)/NO(y) ratio is usually much higher than predicted regardless of the presence of acetone in the model. The exception occurs for air parcels having low NO(y) and O3 values. For these air parcels the measured NO(x)/NO(y) ratio is much lower than the calculated ratio unless acetone is included in the model. In all cases acetone increases the fraction of NO(y) that is peroxy acetyl nitrate (PAN) from typical values of much less than 0.1 to values as high as 0.35. Including acetone also reduces the scatter in a comparison between modeled and observed NO(x)/NO(y) ratios.

UR - http://www.scopus.com/inward/record.url?scp=0032950120&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0032950120&partnerID=8YFLogxK

U2 - 10.1029/1998GL900219

DO - 10.1029/1998GL900219

M3 - Article

AN - SCOPUS:0032950120

VL - 26

SP - 51

EP - 54

JO - Geophysical Research Letters

JF - Geophysical Research Letters

SN - 0094-8276

IS - 1

ER -