| 2018 |
|
Extreme ionospheric storms and their effects on GPS systems
Given the central importance of Global Positioning System (GPS) to modern society, it is important to consider the effects of extreme ionospheric storms on GPS signals. We
Crowley, Geoff; Azeem, Irfan;
Published by: Published on:
YEAR: 2018 DOI: 10.1016/B978-0-12-812700-1.00023-6
|
| 2015 |
|
Global ionospheric response to the 2009 sudden stratospheric warming event using Ionospheric Data Assimilation Four-Dimensional (IDA4D) algorithm
A data assimilation algorithm is used to delineate the time-dependent three-dimensional ionospheric response to the 2009 sudden stratospheric warming (SSW) event. We use the Ionospheric Data Assimilation Four-Dimensional (IDA4D) algorithm to study the global ionospheric response to the 2009 SSW. This is the first study to utilize global ionospheric measurements in a data assimilation framework to unambiguously characterize atmosphere-ionosphere coupling via tidal modifications during the 2009 SSW event. Model results reve ...
Azeem, I.; Crowley, G.; Honniball, C.;
Published by: Journal of Geophysical Research: Space Physics Published on: 05/2015
YEAR: 2015 DOI: 10.1002/2015JA020993
Atmospheric tides; data assimilation; ionosphere/atmosphere interactions; sudden stratospheric warming
|
|
Multisensor profiling of a concentric gravity wave event propagating from the troposphere to the ionosphere
Azeem, Irfan; Yue, Jia; Hoffmann, Lars; Miller, Steven; Straka, William; Crowley, Geoff;
Published by: Geophysical research letters Published on:
YEAR: 2015 DOI:
|
|
First Measurements of Ionospheric TEC and GPS Scintillations from an Unmanned Marine Vehicle
Azeem, Irfan; Crowley, Geoff; Reynolds, Adam;
Published by: Published on:
YEAR: 2015 DOI:
|
| 2014 |
|
Ensemble Assimilation Using Three First-Principles Thermospheric Models as a Tool for 72-hour Density and Satellite Drag Forecasts
Hunton, Don; Pilinski, Marcin; Crowley, Geoff; Azeem, I; Fuller-Rowell, Timothy; Matsuo, Tomoko; Fedrizzi, Mariangel; Solomon, Stanley; Qian, Liying; Thayer, Jeffrey; , others;
Published by: Published on:
YEAR: 2014 DOI:
|
|
Topside Ionospheric Sounder for CubeSats
Swenson, C; Pratt, J; Fish, CS; Winkler, C; Pilinski, M; Azeem, I; Crowley, G; Jeppesen, M; Martineau, R;
Published by: Published on:
YEAR: 2014 DOI:
|
|
Space Weather Tools of the Trade-A Changing Mix
Kunches, Joseph; Crowley, Geoff; Pilinski, Marcin; Winkler, Clive; Fish, Chad; Hunton, Don; Reynolds, Adam; Azeem, I;
Published by: Published on:
YEAR: 2014 DOI:
|
| 2012 |
|
Tutorial: The Neutral Atmosphere and the Satellite Drag Environment
Crowley, Geoff; Pilinski, Marcin; Azeem, Irfan;
Published by: Advances in the Astronautical Sciences Published on:
YEAR: 2012 DOI:
|
| 2011 |
|
A study of space shuttle plumes in the lower thermosphere
Meier, R.; Stevens, Michael; Plane, John; Emmert, J.; Crowley, G.; Azeem, I.; Paxton, L.; Christensen, A.;
Published by: Journal of Geophysical Research Published on: Jan-01-2011
YEAR: 2011 DOI: 10.1029/2011JA016987
|
| 2010 |
|
Effects of the Shuttle Plumes on the Chemistry and Energetics of the Lower Thermosphere
Azeem, SI; Crowley, G; Stevens, MH; Meier, RR;
Published by: Published on:
YEAR: 2010 DOI:
|
|
Dynamical Properties of Shuttle Plumes in the Lower Thermosphere
Meier, RR; Stevens, MH; Plane, JM; Emmert, JT; Crowley, G; Paxton, LJ; Christensen, AB; Azeem, SI;
Published by: Published on:
YEAR: 2010 DOI:
|
| 2006 |
|
Analyses of solar activity effects on the low-latitude ionosphere
Wolven, BC; Talaat, ER; Yee, J; DeMajistre, R; Paxton, LJ; Christensen, A; Sotirelis, T; Smith, DC; Bilitza, D; Azeem, I;
Published by: Published on:
YEAR: 2006 DOI:
|
| 2005 |
|
The climatology of the quiet nighttime low-latitude ionosphere
Talaat, ER; Yee, J; DeMajistre, R; Paxton, L; Kil, H; Zhang, Y; Sotirelis, T; Christensen, A; Palo, S; Azeem, I; , others;
Published by: Published on:
YEAR: 2005 DOI:
|
| 2004 |
|
Observational and Modeling Analysis of the Coupling Between Neutral Winds and the Low-Latitude Ionosphere
Talaat, ER; DeMajistre, R; Yee, J; Paxton, LJ; Crowley, G; Palo, S; Christensen, AB; Azeem, I; Roble, R; Kil, H; , others;
Published by: Published on:
YEAR: 2004 DOI:
|
| 2003 |
|
Studies on the coupling between the neutral winds and the ionosphere at low latitudes
Talaat, ER; DeMajistre, R; Kil, H; Yee, JH; Paxton, L; Azeem, SM; Crowley, G; Christensen, A; Roble, RG;
Published by: Published on:
YEAR: 2003 DOI:
|
| 2002 |
|
Comparison of TIMED/GUVI inferred nighttime electron density with ionospheric observations and models
Talaat, ER; DeMajistre, R; Paxton, L; Yee, J; Goncharenko, LP; Crowley, G; Azeem, S; Shpynev, B; Zhou, Q; Kil, H; , others;
Published by: Published on:
YEAR: 2002 DOI:
|