Climatology of GPS ionospheric scintillations over high and mid-latitude European regions

We analyze data of ionospheric scintillation in the geographic latitudinal range 44°–88° N during the period of October, November and December 2003 as a first step to develop a “scintillation climatology” over Northern Europe.
The behavior of the scintillation occurrence as a function of the magnetic local time and of the corrected magnetic latitude
is investigated to characterize the external conditions leading to scintillation scenarios. The results shown herein,
obtained merging observations from four GISTM (GPS Ionospheric Scintillation and TEC Monitor), highlight also the possibility to investigate the dynamics of irregularities causing scintillation by combining the information coming from a wide range of latitudes. Our findings associate the occurrences of the ionospheric irregularities with the expected position
of the auroral oval and ionospheric troughs and show similarities with the distribution in magnetic local time of the polar cap patches. The results show also the effect of
ionospheric disturbances on the phase and the amplitude of the GPS signals, evidencing the different contributions of the auroral and the cusp/cap ionosphere.

Baker, K. B. and Wing, S.: A new magnetic coordinate system for
conjugate studies at high latitudes, J. Geophys. Res., 94, 9139–
9143, 1989.
Buchau, J., Reinisch, B. W., Weber, E. J., and Moore, J. G.: Structure
and dynamics of the winter polar cap F-region, Radio Sci.,
18, 995–1010,1983.
Committee on the Societal and Economic Impacts of Severe Space
Weather Events: Severe Space Weather Events – Understanding
Societal and Economic ImpactsWorkshop Report, ISBN: 0-309-
12770-X, 2008.
De Franceschi, G., Alfonsi, L., Romano, V., Aquino, M.
H. O., Dodson, A., Mitchell, C. N., and Wernik, A.
W.: Dynamics of high latitude patches and associated small
scale irregularities, J. Atmos. Sol.-Terr. Phys., 70, 879–888,
doi:10.1016/j.jastp.2007.05.018, 2008.
Doherty, P. H., Delay, S. H., Valladares, C. E., and Klobuchar, J.
A.: Ionospheric scintillation effects in the equatorial and auroral
regions, in: Proceedings of the 13th International Technical
Meeting of the Satellite Division of the Institute of Navigation
ION GPS 2000, Salt Lake City, USA, 19–22 September 2000,
662–671, 2000.
Feldstein, Y. I.: On Morphology and Auroral and Magnetic Disturbances
at High Latitudes, Geomagn. Aeron., 3, 183–192, 1963.
Foster, J. C. and Rideout, W.: Mid latitude TEC enhancements
during the October 2003 supestorm, Geophys. Res. Lett., 32,
L12S04, doi:10.1029/2004GL021719, 2005.
Goodman, J. M.: Space Weather & Telecommunications, 1st ed.,
Springer, USA, 2005.
Holzworth, R. H. and Meng, C.-I.: Mathematical representation of
the auroral oval, Geophys. Res. Lett., 2, 377–380, 1975.
Hunsucker, R. D. and Hargreaves, J. K.: The High-Latitude Ionosphere
and its Effects on Radio Propagation, 1st ed., Cambridge
University Press, UK, 2003.
Humphreys, T. E., Psiaki, M. L., Ledvina, B. M., and Kintner, P. M.:
Performance of GPS carrier tracking loops during ionospheric
scintillations, in: Proceedings of International Ionospheric Effects
Symposium, Alexandria, USA, 3–5 May 2005, A010, 2005.
MacDougall, J. W.: Distribution of irregularities in the northern
polar region determined from HILAT observations, Radio Sci.,
25(2), 115–124, 1990.
Meggs, R. W., Mitchell, C. N., and Honary, F.: GPS scintillation
over the European Arctic during the November 2004
storms, GPS Solut., 12, 281–287, doi:10.1007/s10291-008-
0090-3, 2008.
Mitchell, C. N., Alfonsi, L., De Franceschi, G., Lester, M., Romano,
V., and Wernik, A. W.: GPS TEC and scintillation measurements
from the polar ionosphere during the October 2003 storm,
Geophys. Res. Lett., 32, L12S03, doi:10.1029/2004GL021644,
2005.
Moen, J., Gulbrandsen, N., Lorentzen, D. A., and Carlson, H. C.:
On the MLT distribution of F region polar cap patches at night,
Geophys. Res. Lett., 34, L14113, doi:10.1029/2007GL029632,
2007.
Moen, J., Qiu, X. C., Carlson, H. C., Fujii, R., and McCrea, I. W.:
On the diurnal variability in F2-region plasma density above the
EISCAT Svalbard radar, Ann. Geophys., 26, 2427–2433, 2008,
http://www.ann-geophys.net/26/2427/2008/.
Rino, C. L.: A power law phase screen model for ionospheric scintillation.
I-Weak Scatter. II-Strong scatter, Radio Sci., 14, 1135–
1145, 1147–1155, 1979.
Rodrigues, F. S., Aquino, M. H. O., Dodson, A., Moore, T., and
Waugh, S.: Statistical analysis of GPS ionospheric scintillation
and short-time TEC variations over northern Europe, Journal of
the Institute of Navigation, 51(1), 59–75, 2004.
Taylor, J. R.: An introduction to Error Analysis: The Study of Uncertainties
in Physical Measurement, 2nd ed., University Science
Books, USA, 1997.
Tsunoda, R. T.: High-Latitude F region irregularities: a review and
synthesis, Rev.Geophys., 26, 719–760, 1988.
Van Dierendonck, A. J., Klobuchar, J., and Hua, Q.: Ionospheric
scintillation monitoring using commercial single frequency C/A
code receivers, in: ION GPS-93 Proceedings of the Sixth International
Technical Meeting of the Satellite Division of the Institute
of Navigation, Salt Lake City, USA, 22–24 September, 1333–
1342, 1993.
Voiculescu, M., Virtanen, I., and Nygrn, T.: The F-region trough:
seasonal morphology and relation to interplanetary magnetic
field, Ann. Geophys., 24, 173–185, 2006,
http://www.ann-geophys.net/24/173/2006/.
Werner, S. and Prolss, G.W.: The position of the ionospheric trough
as a function of local time and magnetic activity, Adv. Space
Res., 209, 1717–1722, 1997.
Wernik, A. W., Liu, C. H., Franke, S. J., and Gola, M.: Highlatitude
irregularity spectra deduced from scintillation measurements,
Radio Sci., 25, 883–895, 1990.
Wernik, A. W., Secan, J. A., and Fremouw, E. J.: Ionospheric irregularities
and scintillation, Adv. Space Res., 31(4), 971–981,
2003.
Wheelon, A. D.: Electromagnetic Scintillation: II.Weak Scattering,
1st ed., Cambridge University Press, UK, 2001.
Wielgosz, P., Baran, L. W., Shagimuratov, I. I., and Aleshnikova,
M. V.: Latitudinal variations of TEC over Europe obtained from
GPSobservations, Ann. Geophys., 22, 405–415, 2004,
http://www.ann-geophys.net/22/405/2004/.