Quasi-biennial oscillation in GPS VTEC measurements
作者： Laura I. Fernández , Amalia M. Meza , Ana G. Elías
DOI: 10.1016/J.ASR.2014.03.027
关键词:
摘要: Abstract The quasi-biennial oscillation, QBO, a well known periodicity in the equatorial stratospheric zonal winds, is also found ionospheric parameters and solar geomagnetic activity indices. Many authors speculated about link between QBO atmospheric parameters. In this work we analyze presence of ionosphere using Vertical Total Electron Content (VTEC) values obtained from Global Navigation Satellite System (GNSS) measurements during period 1999–2012. particular, used IONEX files, i.e. International GNSS Service (IGS) products. provide VTEC around world at 2-h intervals. From these data compute global averages different local times mid latitudes. Extreme Ultra Violet (EUV) flux time series are analyzed wavelet multi resolution analysis. all cases detected among other expected periodicities. Since main source variation free electrons F2 region, where maximum concentration occurs, EUV radiation, conclude that most important cause attributable to variability flux. Both QBOs observed vary phase. percentage total signal photoionization 15% independent magnetic latitude while respective energy for 18%.
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Masahisa Sugiura, D. J. Poros, Solar‐generated quasi‐biennial geomagnetic variation Journal of Geophysical Research. ,vol. 82, pp. 5621- 5628 ,(1977) , 10.1029/JA082I035P05621
O. G. Badalyan, V. N. Obridko, J. Sýkora, Quasi-Biennial Oscillations in the North – South Asymmetry of Solar Activity Solar Physics. ,vol. 247, pp. 379- 397 ,(2008) , 10.1007/S11207-008-9120-0
E. Echer, On the quasi-biennial oscillation (QBO) signal in the foF2 ionospheric parameter Journal of Atmospheric and Solar-Terrestrial Physics. ,vol. 69, pp. 621- 627 ,(2007) , 10.1016/J.JASTP.2006.11.001
G.A. Mansilla, P. Fernandez de Campra, M. Zossi de Artigas, Quasi-biennial oscillation in foF2 at the south crest of the equatorial anomaly Journal of Atmospheric and Solar-Terrestrial Physics. ,vol. 71, pp. 1610- 1612 ,(2009) , 10.1016/J.JASTP.2009.03.003
Richard J. Reed, William J. Campbell, Lowell A. Rasmussen, Dale G. Rogers, Evidence of a downward-propagating, annual wind reversal in the equatorial stratosphere Journal of Geophysical Research. ,vol. 66, pp. 813- 818 ,(1961) , 10.1029/JZ066I003P00813
A. Vecchio, M. Laurenza, V. Carbone, M. Storini, QUASI-BIENNIAL MODULATION OF SOLAR NEUTRINO FLUX AND SOLAR AND GALACTIC COSMIC RAYS BY SOLAR CYCLIC ACTIVITY The Astrophysical Journal. ,vol. 709, ,(2010) , 10.1088/2041-8205/709/1/L1
A. Vecchio, M. Laurenza, D. Meduri, V. Carbone, M. Storini, The Dynamics of the Solar Magnetic Field: Polarity Reversals, Butterfly Diagram, and Quasi-biennial Oscillations The Astrophysical Journal. ,vol. 749, pp. 27- ,(2012) , 10.1088/0004-637X/749/1/27
F. D. STACEY, P. WESTCOTT, Possibility of a 26- or 27-Month Periodicity in the Equatorial Geomagnetic Field and its Correlation with Stratospheric Winds Nature. ,vol. 196, pp. 730- 732 ,(1962) , 10.1038/196730A0
M. J. Jarvis, Quasi-biennial oscillation effects in the semidiurnal tide of the Antarctic lower thermosphere Geophysical Research Letters. ,vol. 23, pp. 2661- 2664 ,(1996) , 10.1029/96GL02394
O.G. Badalyan, V.N. Obridko, North–South asymmetry of the sunspot indices and its quasi-biennial oscillations New Astronomy. ,vol. 16, pp. 357- 365 ,(2011) , 10.1016/J.NEWAST.2011.01.005