selected publications
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conference proceeding
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Comparative Studies of Theoretical Models in the Equatorial Ionosphere.
Geophysical Monograph.
133-144.
2011
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Physical Characteristics and Modeling of Earth's Thermosphere.
Geophysical Monograph.
13-27.
2011
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International Heliophysical Year: GPS Network in Africa.
Earth Moon and Planets.
263-270.
2007
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Ionospheric nowcasting via assimilation of GPS measurements of ionospheric electron content in a global physics-based time-dependent model.
Quarterly Journal of the Royal Meteorological Society.
3543-3559.
2005
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Application of thermospheric general circulation models for space weather operations.
Advances in Space Research.
401-408.
2004
- Ionospheric corrections from a prototype operational assimilation and forecast system. 518-526. 2004
- On the use of physics-based models in data assimilation for neutral density specification and forecast. Advances in the Astronautical Sciences. 1979-1995. 2003
- Capturing the Storm-Time F-Region Ionospheric Response in an Empirical Model. Geophysical Monograph. 393-401. 2001
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Comparative Studies of Theoretical Models in the Equatorial Ionosphere.
Geophysical Monograph.
133-144.
2011
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journal article
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Space Weather Environment During the SpaceX Starlink Satellite Loss in February 2022.
Space Weather.
2022
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Modeling Equatorial F-Region Ionospheric Instability Using a Regional Ionospheric Irregularity Model and WAM-IPE.
Journal of Geophysical Research: Space Physics.
2022
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On the difference between real-time and research simulations with CTIPe.
Advances in Space Research.
2077-2087.
2019
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Effect of Magnetic Storm Related Thermospheric Changes on the Evolution of Equatorial Plasma Bubbles.
Journal of Geophysical Research: Space Physics.
2256-2270.
2019
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Quantifying the Storm Time Thermospheric Neutral Density Variations Using Model and Obeservations.
Space Weather.
269-284.
2019
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Quantifying the Sources of Ionosphere Day-To-Day Variability.
Journal of Geophysical Research: Space Physics.
9682-9696.
2018
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Space Weather Modeling Capabilities Assessment: Neutral Density for Orbit Determination at low Earth orbit.
Space Weather.
1806-1816.
2018
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Validation of Ionospheric Specifications During Geomagnetic Storms TEC and foF2 During the 2013 March Storm Event.
Space Weather.
1686-1701.
2018
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Assessment of the Impact of FORMOSAT-7/COSMIC-2 GNSS RO Observations on Midlatitude and Low-Latitude Ionosphere Specification: Observing System Simulation Experiments Using Ensemble Square Root Filter.
Journal of Geophysical Research: Space Physics.
2296-2314.
2018
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CEDAR-GEM Challenge for Systematic Assessment of Ionosphere/Thermosphere Models in Predicting TEC During the 2006 December Storm Event.
Space Weather.
1238-1256.
2017
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Ionospheric response to sudden stratospheric warming events at low and high solar activity.
Journal of Geophysical Research: Space Physics.
2014
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First forecast of a sudden stratospheric warming with a coupled whole-atmosphere/ionosphere model IDEA.
Journal of Geophysical Research: Space Physics.
2079-2089.
2014
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The neutral dynamics during the 2009 sudden stratosphere warming simulated by different whole atmospheremodels.
Journal of Geophysical Research: Space Physics.
1306-1324.
2014
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Comparisons of thermospheric wind and temperature measurements in equatorial Brazil to Whole Atmosphere Model Predictions.
Journal of Atmospheric and Solar: Terrestrial Physics.
103-112.
2013
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Eastward propagating planetary waves with periods of 1-5 days in the winter Antarctic stratosphere as revealed by MERRA and lidar.
Journal of Geophysical Research: Atmospheres.
9565-9578.
2013
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Is Space Weather Different Over Africa, and If So, Why? An AGU Chapman Conference Report.
Space Weather.
389-391.
2013
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Longitudinal and day-to-day variability in the ionosphere from lower atmosphere tidal forcing.
Geophysical Research Letters.
2523-2528.
2013
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Thermospheric zonal mean winds and tides revealed by CHAMP.
Geophysical Research Letters.
2439-2443.
2013
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CEDAR Electrodynamics Thermosphere Ionosphere (ETI) Challenge for systematic assessment of ionosphere/thermosphere models: Electron density, neutral density, NmF2, and hmF2 using space based observations.
Space Weather.
2012
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On the validation effort of the Coupled Thermosphere Ionosphere Plasmasphere Electrodynamics model.
Space Weather.
2012
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Longitudinal variation of ionospheric vertical drifts during the 2009 sudden stratospheric warming.
Journal of Geophysical Research: Space Physics.
2012
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A real-time run of the Coupled Thermosphere Ionosphere Plasmasphere Electrodynamics (CTIPe) model.
Space Weather.
2012
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Extreme Ultraviolet Variability Experiment (EVE) on the Solar Dynamics Observatory (SDO): Overview of Science Objectives, Instrument Design, Data Products, and Model Developments.
Solar Physics: a journal for solar and solar-stellar research and the study of solar terrestrial physics.
115-143.
2012
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CEDAR Electrodynamics Thermosphere Ionosphere (ETI) Challenge for systematic assessment of ionosphere/thermosphere models: NmF2, hmF2, and vertical drift using ground-based observations.
Space Weather.
2011
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First simulations with a whole atmosphere data assimilation and forecast system: The January 2009 major sudden stratospheric warming.
Journal of Geophysical Research: Space Physics.
2011
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The international reference ionosphere today and in the future.
Journal of Geodesy.
909-920.
2011
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Did the January 2009 sudden stratospheric warming cool or warm the thermosphere?.
Geophysical Research Letters.
2011
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Forecasting the dynamic and electrodynamic response to the January 2009 sudden stratospheric warming.
Geophysical Research Letters.
2011
-
A whole atmosphere model simulation of the impact of a sudden stratospheric warming on thermosphere dynamics and electrodynamics.
Journal of Geophysical Research: Space Physics.
2010
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Midnight density and temperature maxima, and thermospheric dynamics in Whole Atmosphere Model simulations.
Journal of Geophysical Research: Space Physics.
2010
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Midnight temperature maximum (MTM) in Whole Atmosphere Model (WAM) simulations.
Geophysical Research Letters.
2009
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A comprehensive evaluation of the errors inherent in the use of a two-dimensional shell for modeling the ionosphere.
Radio Science.
2008
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OpenGGCM Simulations for the THEMIS Mission.
Space Science Reviews.
535-555.
2008
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Validation of the Coupled Thermosphere Ionosphere Plasmasphere Electrodynamics model: CTIPE-Mass Spectrometer Incoherent Scatter temperature comparison.
Space Weather.
2008
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Impact of terrestrial weather on the upper atmosphere.
Geophysical Research Letters.
2008
-
Tidal variability in the lower thermosphere: Comparison of Whole Atmosphere Model (WAM) simulations with observations from TIMED.
Geophysical Research Letters.
2008
-
Observed and modeled thermosphere and ionosphere response to superstorms.
Radio Science.
2007
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A comparison of Magic and FORTE ionosphere measurements.
Radio Science.
2007
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Differential validation of the US-TEC model.
Radio Science.
2007
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US-TEC: A new data assimilation product from the Space Environment Center characterizing the ionospheric total electron content using real-time GPS data.
Radio Science.
2006
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Consistent features of TEC changes during ionospheric storms.
Journal of Atmospheric and Solar: Terrestrial Physics.
1834-1842.
2006
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Possible consequences of the displacement of magnetic poles on the structure and dynamics of the earth's upper atmosphere.
Doklady Earth Sciences.
978-980.
2006
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Extreme solar EUV flares and ICMEs and resultant extreme ionospheric effects: Comparison of the Halloween 2003 and the Bastille Day events.
Radio Science.
2006
- The potential of remote sensing for neutral atmospheric density estimation in a data assimilation system. Journal of the Astronautical Sciences. 445-463. 2005
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Dynamics in the polar thermosphere after the coronal mass ejection of 28 October 2003 observed with the EPIS interferometer at Svalbard.
Journal of Geophysical Research: Space Physics.
2005
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USTEC: a new product from the Space Environment Center characterizing the ionospheric total electron content.
GPS Solutions.
236-239.
2005
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The first real-time worldwide ionospheric predictions network: An advance in support of spaceborne experimentation, on-line model validation, and space weather.
Geophysical Research Letters.
449-452.
1998
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Stable and rugged etalon for the Dynamics Explorer Fabry-Perot interferometer. 1: Design and construction..
Applied Optics.
3896-3902.
1982
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Space Weather Environment During the SpaceX Starlink Satellite Loss in February 2022.
Space Weather.
2022