GUVI Biblio

Conjugate Photoelectron Energy Spectra Derived From Coincident FUV and Radio Measurements

We present a method for estimating incident photoelectrons energy spectra as a function of altitude by combining global scale far-ultraviolet (FUV) and radio-occultation (RO) measurements. This characterization provides timely insights important for accurate interpretation of ionospheric parameters inferred from the recently launched Ionospheric Connection Explorer (ICON) observations. Quantification of photoelectron impact is enabled by the fact that conjugate photoelectrons (CPEs) directly affect FUV airglow emissions but ...

Urco, J.; Kamalabadi, F.; Kamaci, U.; Harding, B.; Frey, H.; Mende, S.; Huba, J.; England, S.; Immel, T.;

Published by: Geophysical Research Letters      Published on:

YEAR: 2021     DOI: 10.1029/2021GL095839

airglow; conjugate photolectrons; COSMIC2; energy spectra; ICON

Signatures of conjugate photoelectrons in the ionosphere and thermosphere

Kil, Hyosub; Paxton, Larry; Schaefer, Robert; Huba, Joseph;

Published by:       Published on:

YEAR: 2021     DOI:

Plasma depletions lasting into daytime during the recovery phase of a geomagnetic storm in May 2017: Analysis and simulation of GPS total electron content observations

This paper reports that plasma density depletions appearing at middle latitudes near sunrise survived until afternoon on 29 May 2017 during the recovery phase of a geomagnetic storm. By analyzing GPS data collected in Japan, we investigate temporal variations in the horizontal two-dimensional distribution of total electron content (TEC) during the geomagnetic storm. The SYM-H index reached −142 nT around 08 UT on 28 May 2017. TEC depletions extending up to approximately 38°N along the meridional direction appeared over Ja ...

Otsuka, Yuichi; Shinbori, Atsuki; Sori, Takuya; Tsugawa, Takuya; Nishioka, Michi; Huba, Joseph;

Published by: Earth and Planetary Physics      Published on:

YEAR: 2021     DOI: 10.26464/epp2021046

Ionosphere; GPS; ionospheric irregularity; plasma bubble; SAMI2

Modeling the Impact of Metallic Ion Layers on Equatorial Spread With SAMI3/ESF

The impact of region metal ion layers on the development of equatorial plasma bubbles is investigated using the SAMI3/ESF model. We find that metal ion layers reduce the growth rate of the generalized Rayleigh-Taylor instability (GRTI) and act to suppress the development of equatorial plasma bubbles. This is consistent with ...

Huba, J.; Krall, J.; Drob, D.;

Published by: Geophysical Research Letters      Published on: 02/2020

YEAR: 2020     DOI: 10.1029/2020GL087224

Equatorial ionosphere; Equatorial Spread F; metal ions; sporadic E

Thermospheric tidal effects on the ionospheric midlatitude summer nighttime anomaly using SAMI3 and TIEGCM

This paper is the first study to employ a three-dimensional physics-based ionosphere model, SAMI3, coupled with the National Center for Atmospheric Research Thermosphere Ionosphere Electrodynamics General Circulation Model (TIEGCM) and Global Scale Wave Model to simulate the mesospheric and lower thermospheric tidal effects on the development of midlatitude summer nighttime anomaly (MSNA). Using this coupled model, the diurnal variation of MSNA electron densities at 300 km altitude is simulated on both June solstice (day ...

Chen, C.; Lin, C.; Chang, L.; Huba, J.; Lin, J.; Saito, A.; Liu, J;

Published by: Journal of Geophysical Research: Space Physics      Published on: 06/2013

YEAR: 2013     DOI: 10.1002/jgra.50340

MSNA; SAMI3; tidal effect; TIEGCM

SAMI3 Simulations of Ionospheric Variability from 1996 to 2011

McDonald, SE; Lean, J; Huba, JD; Emmert, JT; Drob, DP; Siefring, CL; Meier, RR; Picone, J;

Published by:       Published on:

YEAR: 2012     DOI:

Simulating Ionospheric Variability in the Descending Phase of Solar Cycle-23 using SAMI3

McDonald, SE; Lean, J; Huba, JD; Joyce, GR; Emmert, JT; Drob, DP; Stephan, AW; Siefring, CL; Meier, RR; Picone, J;

Published by:       Published on:

YEAR: 2011     DOI:

Modeling of multiple effects of atmospheric tides on the ionosphere: An examination of possible coupling mechanisms responsible for the longitudinal structure of the equatorial ionosphere

England, S.; Immel, T.; Huba, J.; Hagan, M.; Maute, A.; DeMajistre, R.;

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

YEAR: 2010     DOI: 10.1029/2009JA014894

Integrating the Sun-Earth System for the Operational Environment (ISES-OE)

Lean, J.; Huba, J.; McDonald, S.; Slinker, S.; Drob, D.; Emmert, J.; Meier, R.; Picone, J.; Joyce, G.; Krall, J.; Stephan, A.; Roach, K.; Knight, H.; Plunkett, S.; Wu, C.-C.; Wood, B.; Wang, Y.-M.; Howard, R.; Chen, J.; Bernhardt, P.; Fedder, J.;

Published by:       Published on:

YEAR: 2010     DOI:

Day-to-day variability of the equatorial ionization anomaly and scintillations at dusk observed by GUVI and modeling by SAMI3

Basu, Su.; Basu, S.; Huba, J.; Krall, J.; McDonald, S.; Makela, J.; Miller, E.; Ray, S.; Groves, K.;

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

YEAR: 2009     DOI: 10.1029/2008JA013899

Three-dimensional equatorial spread F modeling: Zonal neutral wind effects

Huba, J.; Ossakow, S.; Joyce, G.; Krall, J.; England, S.;

Published by: Geophysical Research Letters      Published on: Jan-01-2009

YEAR: 2009     DOI: 10.1029/2009GL040284

Sun-to-Earth Imaging for Operational Space Weather Monitoring

Chua, DH; Wood, BE; Slinker, SP; Meier, RR; Englert, CR; Socker, DG; Huba, J; Krall, J;

Published by:       Published on:

YEAR: 2009     DOI:

Three-dimensional equatorial spread F modeling: Zonal neutral wind effect

Joyce, GR; Huba, J; Ossakow, SL; Krall, J; England, S;

Published by:       Published on:

YEAR: 2009     DOI:

Three-dimensional equatorial spread F modeling: Zonal neutral wind effects

Huba, JD; Ossakow, SL; Joyce, G; Krall, J; England, SL;

Published by: Geophysical Research Letters      Published on:

YEAR: 2009     DOI:

Equatorial anomaly development and collapse at dusk observed by TIMED/GUVI and modeled by SAMI3

Basu, Sunanda; Basu, Sunanda; Huba, J; Krall, J; Basu, Santimay; Makela, Jonathan;

Published by: 37th COSPAR Scientific Assembly      Published on:

YEAR: 2008     DOI:

Modeling the longitudinal variation in the post-sunset far-ultraviolet OI airglow using the SAMI2 model

England, SL; Immel, TJ; Huba, JD;

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

YEAR: 2008     DOI:

Modeling of Equatorial Anomaly Development and Collapse at Dusk Observed by TIMED/GUVI Over Indian Longitudes

Basu, S; Huba, J; Makela, J; Ray, S; Groves, K;

Published by:       Published on:

YEAR: 2007     DOI:

Equatorial anomaly development mapped by TIMED/GUVI: Occurrence/suppression of scintillations at low latitudes and their modeling

Basu, S; Basu, S; Makela, J; Miller, E; Dasgupta, A; Roy, S; Huba, J; Groves, K; Rich, F;

Published by: Eos Trans. AGU      Published on:

YEAR: 2006     DOI:

Modeling of Equatorial Anomaly Development and Collapse at Dusk Observed by TIMED/GUVI

Basu, S; Huba, J; Makela, J; Miller, E; Groves, K;

Published by:       Published on:

YEAR: 2006     DOI:

The October 28, 2003 extreme EUV solar flare and resultant extreme ionospheric effects: Comparison to other Halloween events and the Bastille Day event

Some of the most intense solar flares measured in 0.1 to 0.8 nm x-rays in recent history occurred near the end of 2003. The Nov 4 event is the largest in the NOAA records (X28) and the Oct 28 flare was the fourth most intense (X17). The Oct 29 flare was class X7. These flares are compared and contrasted to the July 14, 2000 Bastille Day (X10) event using the SOHO SEM 26.0 to 34.0 nm EUV and TIMED SEE 0.1\textendash194 nm data. High time resolution, \~30s ground-base GPS data and the GUVI FUV dayglow data are used to exami ...

Tsurutani, B.; Judge, D.; Guarnieri, F.; Gangopadhyay, P.; Jones, A.; Nuttall, J.; Zambon, G.A.; Didkovsky, L.; Mannucci, A.J.; Iijima, B.; Meier, R.; Immel, T.J.; Woods, T.; Prasad, S.; Floyd, L.; Huba, J.; Solomon, S.; Straus, P.; Viereck, R.;

Published by: Geophysical Research Letters      Published on: 02/2005

YEAR: 2005     DOI: 10.1029/2004GL021475

Ionospheric and dayglow responses to the radiative phase of the Bastille Day flare

Meier, RR; Warren, HP; Nicholas, AC; Bishop, J; Huba, JD; Drob, DP; Lean, JL; Picone, JM; Mariska, JT; Joyce, G; , others;

Published by: Geophysical research letters      Published on:

YEAR: 2002     DOI: