Bibliography

Inferring nighttime ionospheric parameters with the far ultraviolet imager onboard the ionospheric connection explorer

The Ionospheric Connection Explorer (ICON) Far Ultraviolet (FUV) imager, ICON FUV, will measure altitude profiles of OI 135.6 nm emissions to infer nighttime ionospheric parameters.

Kamalabadi, Farzad; Qin, Jianqi; Harding, Brian; Iliou, Dimitrios; Makela, Jonathan; Meier, RR; England, Scott; Frey, Harald; Mende, Stephen; Immel, Thomas;

Published by: Space science reviews      Published on:

YEAR: 2018     DOI:

Redistribution of H atoms in the upper atmosphere during geomagnetic storms

Geocoronal H emission data acquired by NASA\textquoterights Thermosphere Ionosphere Mesosphere Energetics and Dynamics mission are analyzed to quantify the H density distribution over the entire magnetosphere-ionosphere-thermosphere region in order to investigate the response of the atmospheric system as a whole to geomagnetic storms. It is shown that at low and middle latitudes the H density averaged over storm times in the thermosphere-exosphere transition region decreases by \~30\%, while the H density at exospheric altitudes above \~1\textendash2\ R_E increases by up to \~40\% relative to quiet times. We postulate that enhanced ion-neutral charge exchange in the topside ionosphere and inner plasmasphere is the primary driver of the observed H redistribution. Specifically, charge exchange reactions between H atoms and ionospheric/plasmaspheric O⁺ lead to direct H loss, while those between thermal H and H⁺ yield kinetically energized H atoms which populate gravitationally bound satellite orbits. The resulting H density enhancements in the outer exosphere would enhance the charge exchange rates in the ring current and the associated energetic neutral atom production. Regardless of the underlying mechanisms, H redistribution should be considered as an important process in the study of storm time atmospheric evolution, and the resultant changes in the geocoronal H emissions potentially could be used to monitor geomagnetic storms.

Qin, Jianqi; Waldrop, Lara; Makela, Jonathan;

Published by: Journal of Geophysical Research: Space Physics      Published on: 08/2017

YEAR: 2017     DOI: 10.1002/jgra.v122.1010.1002/2017JA024489

Radiative transfer modeling of the OI 135.6~nm emission in the nighttime ionosphere

Remote sensing of the nighttime OI 135.6\ nm emissions has been a widely used method for measuring the\ F\ region ionospheric plasma densities. In this work, we first develop a comprehensive radiative transfer model from first principles to investigate the effects of different physical processes on the production and transport of the 135.6\ nm photons in the ionosphere and then propose a new approach for estimating electron densities from the nightglow. The forward modeling investigation indicates that under certain conditions mutual neutralization can contribute up to \~38\% of the total production of the nighttime 135.6\ nm emissions. Moreover, depending on the ionospheric conditions, resonant scattering by atomic oxygen and pure absorption by oxygen molecules can reduce the limb brightness observed by satellite-borne instruments by up to \~40\% while enhancing the brightness viewing in the nadir direction by typically \~25\%. Further analysis shows that without properly addressing these effects in the inversion process, the peak electron density in the\ F\ region (NmF2) obtained using limb observations can be overestimated by up to \~24\%. For accurate estimation of the ionospheric electron density, we develop a new type of inverse model that accounts for the effects of mutual neutralization, resonant scattering, and pure absorption. This inversion method requires the knowledge of O and O₂\ densities in order to solve the radiative transfer equations. Application of the inverse model to the nighttime ionosphere in the noiseless cases demonstrates that the electron density can be accurately quantified with only \~1\% error in NmF2 and hmF2.

Qin, Jianqi; Makela, Jonathan; Kamalabadi, Farzad; Meier, R.;

Published by: Journal of Geophysical Research: Space Physics      Published on: 11/2015

YEAR: 2015     DOI: 10.1002/jgra.v120.1110.1002/2015JA021687

OI 135.6-nm Emission; onosphere; Radiative transfer; remote sensing

Radiative transfer modeling of the OI 135.6 nm emission in the nighttime ionosphere

Qin, Jianqi; Makela, Jonathan; Kamalabadi, Farzad; Meier, RR;

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

YEAR: 2015     DOI:

Electrified MSTIDs at Low Latitudes

Miller, ES; Kil, H; Makela, JJ; Paxton, LJ; Talaat, ER;

Published by:       Published on:

YEAR: 2011     DOI:

Coordinated study of coherent radar backscatter and optical airglow depletions in the central Pacific

Miller, E.; Makela, J.; Groves, K.; Kelley, M.; Tsunoda, R.;

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

YEAR: 2010     DOI: 10.1029/2009JA014946

Periodic spacing between consecutive equatorial plasma bubbles

Makela, Jonathan; Vadas, SL; Muryanto, R; Duly, T; Crowley, G;

Published by: Geophysical Research Letters      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

Studies of Ionospheric Plasma Structuring at Low Latitudes from Space and Ground, their Modeling and Relationship to Scintillations

Makela, Jonathan;

Published by:       Published on:

YEAR: 2009     DOI:

Space-and Ground-Based Observations of Solar Cycle and Local Time Dependence of Equatorial Plasma Bubble Activity

Miller, ES; Comberiate, J; Makela, JJ; Paxton, LJ; Kelley, MC; Groves, KM; Tsunoda, RT;

Published by:       Published on:

YEAR: 2009     DOI:

Coordinated Ground-and Space-based 3-D Electron Density Reconstruction and Plasma Bubble Imaging

Comberiate, J; Miller, ES; Paxton, LJ; Makela, JJ; Kelley, MC;

Published by:       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:

Tracking F-region plasma depletion bands using GPS-TEC, incoherent scatter radar, and all-sky imaging at Arecibo

F-region plasma dynamics has been one of the main foci of the ionospheric research community for decades. The mid-latitude F-region has been considered to be relatively calm;

Seker, Ilgin; Livneh, Dorey; Makela, Jonathan; Mathews, John;

Published by: Earth, planets and space      Published on:

YEAR: 2008     DOI: https://doi.org/10.1186/BF03353127

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:

A review of imaging low-latitude ionospheric irregularity processes

Makela, Jonathan;

Published by: Journal of Atmospheric and Solar-Terrestrial Physics      Published on: Jan-09-2006

YEAR: 2006     DOI: 10.1016/j.jastp.2005.04.014

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:

Comparison of the Equatorial Anomaly Development Mapped by TIMED/GUVI and Occurrence of Scintillations at low Latitudes

Basu, S; Makela, J; Miller, E; Dasgupta, AK; Ray, S; Groves, K; Rich, FJ;

Published by:       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:

Convective ionospheric storms: A major space weather problem

Kelley, Michael; Makela, Jonathan; ere, Odile;

Published by:       Published on:

YEAR: 2006     DOI:

The impact of sub-auroral polarization streams on GPS-based navigation systems

Basu, Su; Basu, S; Makela, J; Doherty, P; Wright, J; Rich, F;

Published by:       Published on:

YEAR: 2006     DOI:

Two components of ionospheric plasma structuring at midlatitudes observed during the large magnetic storm of October 30, 2003

Basu, Su.; Basu, S.; Makela, J.; Sheehan, R.; MacKenzie, E.; Doherty, P.; Wright, J.; Keskinen, M.; Pallamgaju, D.; Paxton, L.; Berkely, F.;

Published by: Geophysical Research Letters      Published on: Jan-01-2005

YEAR: 2005     DOI: 10.1029/2004GL021669

Space Sciences-Special Section: Violent Sun-Earth Connection Events of October-November 2003-L12S06-Two components of ionospheric plasma structuring at midiatitudes observed during the large

Basu, Su; Basu, Su; Makela, JJ; Sheehan, RE; MacKenzie, E; Doherty, P; Wright, JW; Keskinen, MJ; Pallamraju, D; Paxton, LJ; , others;

Published by: Geophysical Research Letters      Published on:

YEAR: 2005     DOI:

A Comparison of LORAAS and GUVI Observations of the Low-Latitude Ionosphere

McDonald, SE; Makela, JJ; Meier, RR; Dymond, KF; Thonnard, SE; Budzien, SA; Christensen, AB; Paxton, LJ; Morrison, D; McCoy, RP;

Published by:       Published on:

YEAR: 2004     DOI:

Two Components of Ionospheric Plasma Structuring at Mid-Latitudes during Large Magnetic Storms

Basu, S; Makela, J; Sheehan, R; MacKenzie, E; Keskinen, M; Pallamraju, D; Paxton, L;

Published by:       Published on:

YEAR: 2004     DOI:

Space-Time Variabilty of Ionospheric Scintillaion in the Equatorial Region

Basu, S; Makela, J; Christensen, A; Groves, K; Dasgupta, A;

Published by:       Published on:

YEAR: 2004     DOI:

The first coordinated ground- and space-based optical observations of equatorial plasma bubbles

We report on ionospheric optical emissions detected by the GUVI instrument on the TIMED satellite. As the satellite crosses the equatorial zone the bright Appleton Anomaly region is imaged. Often these bright zones are interrupted by regions slanted from west to east as the equator is approached forming a backwards \textquoteleftC\textquoteright-shape in the image. To explain this feature we use simultaneous ground-based observations looking equatorward from Hawaii using the 777.4-nm emission. We also compare these optical observations to inverted electron density maps, as well as to those made by radar and to numerical simulations of the Rayleigh-Taylor instability. The characteristic shape is a result of a shear in the eastward plasma flow velocity, which peaks near the F peak at the equator and decreases both above and below that height. The ability to detect these unstable and usually turbulent ionospheric regions from orbit provides a powerful global remote sensing capability for an important space weather process.

Kelley, Michael; Makela, J.; Paxton, L.; Kamalabadi, F.; Comberiate, J.; Kil, H.;

Published by: Geophysical Research Letters      Published on: 07/2003

YEAR: 2003     DOI: 10.1029/2003GL017301

Space Weather Effects of the April 15-23 2002 Geomagnetic Storm

Hackert, C; Crowley, G; Paxton, L; Christensen, A; Kil, Y; Zhang, Y; Morrison, D; Goncharenko, L; Makela, J; Sahai, Y; , others;

Published by:       Published on:

YEAR: 2003     DOI:

Study of the Pre-Reversal Enhancement at the Jicamarca Radio Observatory using the ASPEN-TIMEGCM

Makela, JJ; Crowley, G; Kelley, MC; Nicolls, MJ; Kudeki, E; Chau, JL;

Published by:       Published on:

YEAR: 2003     DOI:

Field-aligned 777.4-nm composite airglow images of equatorial plasma depletions

We present a powerful tool to analyze two‐dimensional field‐aligned images of equatorial plasma depletions taken from mid‐latitudes. By shifting each individual image by the sum of

Makela, JJ; Kelley, MC;

Published by: Geophysical Research Letters      Published on:

YEAR: 2003     DOI:

The first coordinated ground-and space-based optical observations of equatorial plasma bubbles

Kelley, Michael; Makela, Jonathan; Paxton, Larry; Kamalabadi, Farzad; Comberiate, Joseph; Kil, Hyosub;

Published by: Geophysical Research Letters      Published on:

YEAR: 2003     DOI: