A study of the role of ion-molecule chemistry in the formation of sporadic sodium layers

Stephen C. Collins, John M.C. Plane, Michael C. Kelley, Timothy G. Wright, Pavel Soldán, Timothy J. Kane, Andrew J. Gerrard, Brent W. Grime, Rosie J. Rollason, Jonathan S. Friedman, Sixto A. González, Qihou Zhou, Michael P. Sulzer, Craig A. Tepley

Research output: Contribution to journalArticle

66 Citations (Scopus)

Abstract

Over two campaigns in 1998 and 1999, multiple sporadic sodium events were observed by the Arecibo Observatory sodium density lidar while simultaneously monitoring the plasma density using the incoherent scatter radar. In this paper, we test the theoretical explanation proposed by Cox and Plane (1998) where Na+ in a plasma layer is neutralized via an ion-molecule mechanism to form a sporadic sodium layer. A particular challenge is to interpreter observations made in a Eulerian frame of observation where the spatial and temporal characteristics of events cannot easily be separated. The reaction scheme in the original mechanism is modified to include the reactions NaO+ + N2 → Na+ .N2 + O and NaO+ + O2 → Na+ + O3, following the results of theoretical quantum calculations. Six unique case studies of sporadic sodium layers are presented here, and excellent agreement between simulation and observations was obtained for five of them.

Original languageEnglish (US)
Pages (from-to)845-860
Number of pages16
JournalJournal of Atmospheric and Solar-Terrestrial Physics
Volume64
Issue number7
DOIs
StatePublished - Jul 30 2002

Fingerprint

sodium
chemistry
ion
molecules
ions
incoherent scatter radar
plasma
plasma layers
optical radar
lidar
plasma density
observatories
observatory
radar
monitoring
simulation

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Atmospheric Science
  • Space and Planetary Science

Cite this

Collins, Stephen C. ; Plane, John M.C. ; Kelley, Michael C. ; Wright, Timothy G. ; Soldán, Pavel ; Kane, Timothy J. ; Gerrard, Andrew J. ; Grime, Brent W. ; Rollason, Rosie J. ; Friedman, Jonathan S. ; González, Sixto A. ; Zhou, Qihou ; Sulzer, Michael P. ; Tepley, Craig A. / A study of the role of ion-molecule chemistry in the formation of sporadic sodium layers. In: Journal of Atmospheric and Solar-Terrestrial Physics. 2002 ; Vol. 64, No. 7. pp. 845-860.
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abstract = "Over two campaigns in 1998 and 1999, multiple sporadic sodium events were observed by the Arecibo Observatory sodium density lidar while simultaneously monitoring the plasma density using the incoherent scatter radar. In this paper, we test the theoretical explanation proposed by Cox and Plane (1998) where Na+ in a plasma layer is neutralized via an ion-molecule mechanism to form a sporadic sodium layer. A particular challenge is to interpreter observations made in a Eulerian frame of observation where the spatial and temporal characteristics of events cannot easily be separated. The reaction scheme in the original mechanism is modified to include the reactions NaO+ + N2 → Na+ .N2 + O and NaO+ + O2 → Na+ + O3, following the results of theoretical quantum calculations. Six unique case studies of sporadic sodium layers are presented here, and excellent agreement between simulation and observations was obtained for five of them.",
author = "Collins, {Stephen C.} and Plane, {John M.C.} and Kelley, {Michael C.} and Wright, {Timothy G.} and Pavel Sold{\'a}n and Kane, {Timothy J.} and Gerrard, {Andrew J.} and Grime, {Brent W.} and Rollason, {Rosie J.} and Friedman, {Jonathan S.} and Gonz{\'a}lez, {Sixto A.} and Qihou Zhou and Sulzer, {Michael P.} and Tepley, {Craig A.}",
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Collins, SC, Plane, JMC, Kelley, MC, Wright, TG, Soldán, P, Kane, TJ, Gerrard, AJ, Grime, BW, Rollason, RJ, Friedman, JS, González, SA, Zhou, Q, Sulzer, MP & Tepley, CA 2002, 'A study of the role of ion-molecule chemistry in the formation of sporadic sodium layers', Journal of Atmospheric and Solar-Terrestrial Physics, vol. 64, no. 7, pp. 845-860. https://doi.org/10.1016/S1364-6826(02)00129-3

A study of the role of ion-molecule chemistry in the formation of sporadic sodium layers. / Collins, Stephen C.; Plane, John M.C.; Kelley, Michael C.; Wright, Timothy G.; Soldán, Pavel; Kane, Timothy J.; Gerrard, Andrew J.; Grime, Brent W.; Rollason, Rosie J.; Friedman, Jonathan S.; González, Sixto A.; Zhou, Qihou; Sulzer, Michael P.; Tepley, Craig A.

In: Journal of Atmospheric and Solar-Terrestrial Physics, Vol. 64, No. 7, 30.07.2002, p. 845-860.

Research output: Contribution to journalArticle

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T1 - A study of the role of ion-molecule chemistry in the formation of sporadic sodium layers

AU - Collins, Stephen C.

AU - Plane, John M.C.

AU - Kelley, Michael C.

AU - Wright, Timothy G.

AU - Soldán, Pavel

AU - Kane, Timothy J.

AU - Gerrard, Andrew J.

AU - Grime, Brent W.

AU - Rollason, Rosie J.

AU - Friedman, Jonathan S.

AU - González, Sixto A.

AU - Zhou, Qihou

AU - Sulzer, Michael P.

AU - Tepley, Craig A.

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AB - Over two campaigns in 1998 and 1999, multiple sporadic sodium events were observed by the Arecibo Observatory sodium density lidar while simultaneously monitoring the plasma density using the incoherent scatter radar. In this paper, we test the theoretical explanation proposed by Cox and Plane (1998) where Na+ in a plasma layer is neutralized via an ion-molecule mechanism to form a sporadic sodium layer. A particular challenge is to interpreter observations made in a Eulerian frame of observation where the spatial and temporal characteristics of events cannot easily be separated. The reaction scheme in the original mechanism is modified to include the reactions NaO+ + N2 → Na+ .N2 + O and NaO+ + O2 → Na+ + O3, following the results of theoretical quantum calculations. Six unique case studies of sporadic sodium layers are presented here, and excellent agreement between simulation and observations was obtained for five of them.

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