The effects of deionization processes on meteor radar diffusion coefficients below 90 km
作者： J. P. Younger , C. S. Lee , I. M. Reid , R. A. Vincent , Y. H. Kim
DOI: 10.1002/2014JD021787
关键词:
摘要: The decay times of VHF radar echoes from underdense meteor trails are reduced in the lower portions region. This is a result plasma neutralization initiated by attachment positive trail ions to neutral atmospheric molecules. Decreased echo cause radars produce erroneously high estimates ambipolar diffusion coefficient at heights below 90 km, which affects temperature estimation techniques. Comparisons between colocated and satellite observations show that coefficients not consistent with Aura Microwave Limb Sounder instrument operating different frequencies estimate values for simultaneous detections same meteors. Loss free electrons due aerosols chemical processes were numerically simulated compared determine specific mechanism responsible low-altitude neutralization. It shown three-body metal significantly reduces low altitudes case only ozone plays little part evolution effect begins exceed constant density surface.
harvard.edu
sci-hub.se 参考文章(66)
G.W. Adams, L.R. Megill, A two-ion D-region model for polar cap absorption events Planetary and Space Science. ,vol. 15, pp. 1111- 1130 ,(1967) , 10.1016/0032-0633(67)90097-9
F. Arnold, D. Krankowsky, Negative ions in the lower ionosphere: A comparison of a model computation and a mass-spectrometric measurement Journal of Atmospheric and Terrestrial Physics. ,vol. 33, pp. 1693- 1702 ,(1971) , 10.1016/0021-9169(71)90217-0
A. R. Klekociuk, R. J. Morris, J. L. Innis, First Southern Hemisphere common-volume measurements of PMC and PMSE Geophysical Research Letters. ,vol. 35, ,(2008) , 10.1029/2008GL035988
Markus Rapp, Capture rates of electrons and positive ions by mesospheric aerosol particles Journal of Aerosol Science. ,vol. 31, pp. 1367- 1369 ,(2000) , 10.1016/S0021-8502(00)00030-6
W. Jones, Theory of the initial radius of meteor trains Monthly Notices of the Royal Astronomical Society. ,vol. 275, pp. 812- 818 ,(1995) , 10.1093/MNRAS/275.3.812
O. Kalashnikova, M. Horányi, G. E. Thomas, O. B. Toon, Meteoric smoke production in the atmosphere Geophysical Research Letters. ,vol. 27, pp. 3293- 3296 ,(2000) , 10.1029/1999GL011338
L. Megner, M. Rapp, J. Gumbel, Distribution of meteoric smoke - sensitivity to microphysical properties and atmospheric conditions Atmospheric Chemistry and Physics. ,vol. 6, pp. 4415- 4426 ,(2006) , 10.5194/ACP-6-4415-2006
E. E. Ferguson, F. C. Fehsenfeld, Some aspects of the metal ion chemistry of the Earth's atmosphere Journal of Geophysical Research. ,vol. 73, pp. 6215- 6223 ,(1968) , 10.1029/JA073I019P06215
R.S. Harwood, R.F. Jarnot, H.M. Pickett, W.G. Read, P.H. Siegel, R.E. Cofield, M.J. Filipiak, D.A. Flower, J.R. Holden, G.K. Lau, N.J. Livesey, G.L. Manney, H.C. Pumphrey, M.L. Santee, D.L. Wu, D.T. Cuddy, R.R. Lay, M.S. Loo, V.S. Perun, M.J. Schwartz, P.C. Stek, R.P. Thurstans, M.A. Boyles, K.M. Chandra, M.C. Chavez, Gun-Shing Chen, B.V. Chudasama, R. Dodge, R.A. Fuller, M.A. Girard, J.H. Jiang, Yibo Jiang, B.W. Knosp, R.C. LaBelle, J.C. Lam, K.A. Lee, D. Miller, J.E. Oswald, N.C. Patel, D.M. Pukala, O. Quintero, D.M. Scaff, W. Van Snyder, M.C. Tope, P.A. Wagner, M.J. Walch, J.W. Waters, L. Froidevaux, The Earth observing system microwave limb sounder (EOS MLS) on the aura Satellite IEEE Transactions on Geoscience and Remote Sensing. ,vol. 44, pp. 1075- 1092 ,(2006) , 10.1109/TGRS.2006.873771
John Y. N. Cho, Jürgen Röttger, An updated review of polar mesosphere summer echoes: Observation, theory, and their relationship to noctilucent clouds and subvisible aerosols Journal of Geophysical Research. ,vol. 102, pp. 2001- 2020 ,(1997) , 10.1029/96JD02030