scholarly journals Satellite‐beacon Ionospheric‐scintillation Global Model of the upper Atmosphere (SIGMA) II: Inverse modeling with high‐latitude observations to deduce irregularity physics

2016 ◽  
Vol 121 (9) ◽  
pp. 9188-9203 ◽  
Author(s):  
K. B. Deshpande ◽  
G. S. Bust ◽  
C. R. Clauer ◽  
W. A. Scales ◽  
N. A. Frissell ◽  
...  
Keyword(s):  
High Latitude ◽  
Inverse Modeling ◽  
Global Model ◽  
Upper Atmosphere ◽  
Ionospheric Scintillation ◽  
Satellite Beacon

scholarly journals New Capabilities for Prediction of High-Latitude Ionospheric Scintillation: A Novel Approach With Machine Learning

Space Weather ◽  
2018 ◽  
Vol 16 (11) ◽  
pp. 1817-1846 ◽  
Author(s):  
Ryan M. McGranaghan ◽  
Anthony J. Mannucci ◽  
Brian Wilson ◽  
Chris A Mattmann ◽  
Richard Chadwick
Keyword(s):  
Machine Learning ◽  
High Latitude ◽  
Ionospheric Scintillation ◽  
Novel Approach

scholarly journals A comparison of satellite scintillation measurements with HF radar backscatter characteristics

2005 ◽  
Vol 23 (11) ◽  
pp. 3451-3455 ◽  
Author(s):  
S. E. Milan ◽  
S. Basu ◽  
T. K. Yeoman ◽  
R. E. Sheehan
Keyword(s):  
Broad Spectrum ◽  
High Latitude ◽  
Auroral Zone ◽  
Intersection Point ◽  
Density Fluctuations ◽  
Hf Radar ◽  
Ionospheric Scintillation ◽  
Radar Backscatter ◽  
Density Perturbations ◽  
Coherent Radar

Abstract. We examine the correspondence between high latitude ionospheric scintillation measurements made at 250MHz with the occurrence of 10MHz HF coherent radar backscatter, on 13 and 14 December 2002. We demonstrate that when the ionospheric intersection point of the scintillation measurements is co-located with significant HF radar backscatter, the observed scintillation, quantified by the S4 index, is elevated. Conversely, when the radar indicates that backscatter is observed away from the intersection point due to movements of the auroral zone, the observed scintillation is low. This suggests that scintillation is highly location-dependent, being enhanced in the auroral zone and being lower at sub-auroral latitudes. The coexistence of scintillation and HF radar backscatter, produced by ionospheric density perturbations with scale sizes of 100s of metres and ~15 m, respectively, suggests that a broad spectrum of density fluctuations is found in the auroral zone.

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