Bibliography

Equatorial ionospheric plasma drifts and O ⁺ concentration enhancements associated with disturbance dynamo during the 2015 St. Patrick\textquoterights Day magnetic storm

Disturbance dynamo is an important dynamic process during magnetic storms. However, very few direct observations of dynamo-induced plasma drifts and ion composition changes in the equatorial ionosphere are available. In this study, we use measurements of the Defense Meteorological Satellite Program (DMSP) satellites to identify the characteristics of the disturbance dynamo process in the topside equatorial ionosphere near dawn during the magnetic storm with a minimum Dst of -223 nT on 17 March 2015. Data from four DMSP satellites with equatorial crossings at 0245, 0430, 0630, and 0730 LT are available for this case. The dynamo process was first observed in the postmidnight sector 3\textendash4.7 h after the beginning of the storm main phase and lasted for 31 h, covering the second storm intensification and the initial 20 h of the recovery phase. The dynamo vertical ion drift was upward (up to 150\textendash200 m s^-1) in the postmidnight sector and downward (up to ~80 m s^-1) in the early morning sector. The dynamo zonal ion drift was westward at these locations and reached ~100 m s^-1. The dynamo process caused large enhancements of the O⁺ concentration (the ratio of the oxygen ion density to the total ion density) at the altitude of 840 km near dawn. The O⁺ concentration increased from below 60\% during the prestorm period to 80\textendash90\% during the storm time. More specifically, the O⁺ density was increased, and the H⁺ density was decreased. The variations of the O⁺ concentration were well correlated with the vertical ion drift.

Huang, Chao-Song; Wilson, Gordon; Hairston, Marc; Zhang, Yongliang; Wang, Wenbin; Liu, Jing;

Published by: Journal of Geophysical Research: Space Physics      Published on: 06/2016

YEAR: 2016     DOI: 10.1002/2016JA023072

Equatorial ionospheric plasma drifts and O+ concentration enhancements associated with disturbance dynamo during the 2015 St. Patrick's Day magnetic storm

Huang, Chao-Song; Wilson, Gordon; Hairston, Marc; Zhang, Yongliang; Wang, Wenbin; Liu, Jing;

Published by: Journal of Geophysical Research: Space Physics      Published on:

YEAR: 2016     DOI:

Ensemble Modeling with Data Assimilation Models: A New Strategy for Space Weather Science, Specifications and Forecasts

Schunk, Robert; Scherliess, L; Eccles, JV; Gardner, LC; Sojka, JJ; Zhu, L; Pi, X; Mannucci, A; Wilson, BD; Komjathy, A; , others;

Published by:       Published on:

YEAR: 2012     DOI:

Estimating The Forces That Drive Ionosphere And Thermosphere Variability: Continuous Data And Assimilative Modeling

onosphere-thermosphere science has long been hampered by a lack of measurements of the underlying forces that determine plasma structure. These forces include electric fields, thermospheric composition, winds and solar EUV irradiance. All of these forces are dynamic quantities and of great importance to the underlying science. The rapid proliferation of electron density and total electron content measurements from ground and space-borne GPS receivers and other instruments suggests a great potential in the following indirect approach to estimating these forces: developing a model-based approach to retrieving the forces from the electron density structure and dynamics. The research community has just begun to explore such an approach, which addresses significant science questions previously out of reach.

Mannucci, Anthony; Pi, Xiaoqing; Butala, Mark; Stephens, Phil; Wilson, Brian; Komjathy, Attila; Iijima, Byron; Akopian, Vardan; Dumett, Miguel;

Published by: To advocate developing a model-based approach to retrieving the driving forces from measurements of electron density structure and dynamics      Published on:

YEAR: 2010     DOI:

Low-frequency whistler waves and shocklets observed at quasi-perpendicular interplanetary shocks

Wilson, L.; Cattell, C.; Kellogg, P.; Goetz, K.; Kersten, K.; Kasper, J.; Szabo, A.; Meziane, K.;

Published by: Journal of Geophysical Research      Published on: Jan-01-2009

YEAR: 2009     DOI: 10.1029/2009JA014376

GNSS-based space weather systems including COSMIC ionospheric measurements

LORAAS on ARGOS, GUVI on TIMED SSUSI/SSULI on DMSP TIP on COSMIC

Komjathy, Attila; Mandrake, Lukas; Wilson, Brian; Iijima, Byron; Pi, Xiaoqing; Hajj, George; Mannucci, Anthony;

Published by:       Published on:

YEAR: 2006     DOI:

Development of the global assimilative ionospheric model

Wang, Chunming; Hajj, George; Pi, Xiaoqing; Rosen, Gary; Wilson, Brian;

Published by: Radio Science      Published on:

YEAR: 2004     DOI:

Assimilation of Space-Based Ultraviolet Data Into a Recursive Global Ionospheric Model

Kamalabadi, F; Hajj, G; Pi, X; Wang, C; Wilson, B;

Published by:       Published on:

YEAR: 2003     DOI:

Results from CHAMP, SAC/C and IOXGPS ionospheric occultations obtained by the Abel Inversion and data assimilation

No Slide Title Page 1 Results from CHAMP, SAC/C and IOX GPS Ionospheric Occultations Obtained by the Abel Inversion and Data Assimilation Lukas Mandrake, JPL George Hajj, JPL

Mandrake, Lukas; Hajj, George; Iijima, Byron; Pi, Xiaoqing; Rosen, Gary; Straus, Paul; Wang, Chunming; Wilson, Brian;

Published by:       Published on:

YEAR: 2003     DOI: