GUVI Biblio

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Found 7 entries in the Bibliography.

Showing entries from 1 through 7

2017
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 al ... 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
2015
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 indic ... 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
2010
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
2009
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
2006
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
2005
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
2003
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 optica ... 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

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