GUVI

Global UltraViolet Imager

GUVI Biblio





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Found 16 entries in the Bibliography.


Showing entries from 1 through 16


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:



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