Bibliography

Geomagnetic control of equatorial plasma bubble activity modeled by the TIEGCM with Kp

Describing the day-to-day variability of Equatorial Plasma Bubble (EPB) occurrence remains a significant challenge. In this study we use the Thermosphere-Ionosphere Electrodynamics General Circulation Model (TIEGCM), driven by solar (F_10.7) and geomagnetic (Kp) activity indices, to study daily variations of the linear Rayleigh-Taylor (R-T) instability growth rate in relation to the measured scintillation strength at five longitudinally distributed stations. For locations characterized by generally favorable conditions for EPB growth (i.e., within the scintillation season for that location), we find that the TIEGCM is capable of identifying days when EPB development, determined from the calculated R-T growth rate, is suppressed as a result of geomagnetic activity. Both observed and modeled upward plasma drifts indicate that the prereversal enhancement scales linearly with Kp from several hours prior, from which it is concluded that even small Kpchanges cause significant variations in daily EPB growth.

Carter, B.; Retterer, J.; Yizengaw, E.; Groves, K.; Caton, R.; McNamara, L.; Bridgwood, C.; Francis, M.; Terkildsen, M.; Norman, R.; Zhang, K.;

Published by: Geophysical Research Letters      Published on: 08/2014

YEAR: 2014     DOI: 10.1002/2014GL060953

Equatorial ionosphere; plasma bubbles; TIEGCM

An analysis of the quiet time day-to-day variability in the formation of postsunset equatorial plasma bubbles in the Southeast Asian region

Presented is an analysis of the occurrence of postsunset Equatorial Plasma Bubbles (EPBs) detected using a Global Positioning System (GPS) receiver at Vanimo. The three year data set shows that the EPB occurrence maximizes (minimizes) during the equinoxes (solstices), in good agreement with previous findings. The Vanimo ionosonde station is used with the GPS receiver in an analysis of the day-to-day EPB occurrence variability during the 2000 equinox period. A superposed epoch analysis (SEA) reveals that the altitude, and the change in altitude, of the F layer height is \~1 standard deviation (1σ) larger on the days for which EPBs were detected, compared to non-EPB days. These results are then compared to results from the Thermosphere Ionosphere Electrodynamics General Circulation Model (TIEGCM), which show strong similarities with the observations. The TIEGCM is used to calculate the flux-tube integrated Rayleigh-Taylor (R-T) instability linear growth rate. A SEA reveals that the modeled R-T growth rate is 1σ higher on average for EPB days compared to non-EPB days, and that the upward plasma drift is the most dominant contributor. It is further demonstrated that the TIEGCM\textquoterights success in describing the observed daily EPB variability during the scintillation season resides in the variations caused by geomagnetic activity (as parameterized by Kp) rather than solar EUV flux (as parameterized by F_10.7). Geomagnetic activity varies the modeled high-latitude plasma convection and the associated Joule heating that affects the low-latitude F region dynamo, and consequently the equatorial upward plasma drift.

Carter, B.; Yizengaw, E.; Retterer, J.; Francis, M.; Terkildsen, M.; Marshall, R.; Norman, R.; Zhang, K.;

Published by: Journal of Geophysical Research: Space Physics      Published on: 04/2014

YEAR: 2014     DOI: 10.1002/jgra.v119.410.1002/2013JA019570

equatorial plasma bubbles; GPS scintillation; Ionosphere

Comparative studies of theoretical models in the equatorial ionosphere

Fang, Tzu-Wei; Anderson, David; Fuller-Rowell, Tim; Akmaev, Rashid; Codrescu, Mihail; Millward, George; Sojka, Jan; Scherliess, Ludger; Eccles, Vince; Retterer, John; , others;

Published by: Modeling the ionosphere—thermosphere system      Published on:

YEAR: 2014     DOI:

Forecasting low-latitude radio scintillation with 3-D ionospheric plume models: 1. Plume model

Retterer, J.;

Published by: Journal of Geophysical Research      Published on: Jan-01-2010

YEAR: 2010     DOI: 10.1029/2008JA013839

Equatorial-PRIMO (Problems Related to Ionospheric Models and Observations)

Fang, T; Anderson, DN; Fuller-Rowell, TJ; Akmaev, RA; Codrescu, M; Millward, GH; Sojka, JJ; Scherliess, L; Eccles, JV; Retterer, JM; , others;

Published by:       Published on:

YEAR: 2010     DOI:

The Communication/Navigation Outage Forecasting System (C/NOFS) Mission to predict ionospheric densities and scintillation

de La Beaujardiere, O; Retterer, J; Burke, W; Le, G; Paxton, L; Hysell, D;

Published by:       Published on:

YEAR: 2006     DOI:

Theoretical Model of Electron Density Distribution at Low Latitudes: Validation With GUVI Data

Basu, B; Retterer, J; DeMajistre, R; de La Beaujardiere, O;

Published by:       Published on:

YEAR: 2006     DOI:

Scintillation Forecasting Using NPOESS Data

Basu, B; Retterer, J; DeMajistre, R; de La Beaujardiere, O; Scro, K;

Published by:       Published on:

YEAR: 2005     DOI:

Modeling Low Latitude Ion Densities During Magnetic Storms

de La Beaujardiere, O; Retterer, J; Crowley, G; Basu, B; Welsh, J; Baker, C; Mellein, J; Valladares, C; Rich, F; Cooke, D; , others;

Published by:       Published on:

YEAR: 2004     DOI:

Electron Density Profiles and Total Electron Content at Low Latitudes During Magnetic Storms

de La Beaujardiere, O; Cooke, DL; Retterer, JM; Crowley, G; Bishop, GJ; Welsh, JA; Doherty, PH;

Published by:       Published on:

YEAR: 2004     DOI:

Theoretical relationship between maximum value of the post-sunset drift velocity and peak-to-valley ratio of anomaly TEC

Basu, B; Retterer, JM; de La Beaujardiere, O; Valladares, CE; Kudeki, E;

Published by: Geophysical research letters      Published on:

YEAR: 2004     DOI:

Total Electron Content in Nighttime Equatorial Ionosphere: Theoretical Calculations and Comparisons With Data

Basu, B; Retterer, J; de La Beaujardiere, O; Valladares, C;

Published by:       Published on:

YEAR: 2003     DOI: