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Found 7 entries in the Bibliography.
Showing entries from 1 through 7
A case study of ionospheric storm effects during long-lasting southward IMF B z -driven geomagnetic storm
Multiple instrumental observations including GPS total electron content (TEC), foF2 and hmF2 from ionosondes, vertical ion drift measurements from Communication/Navigation Outage Forecasting System, magnetometer data, and far ultraviolet airglow measured by Thermosphere, Ionosphere, Mesosphere Energetics and Dynamics/Global Ultraviolet Imager (TIMED/GUVI) are used to investigate the profound ionospheric disturbances at midlatitude and low latitude during the 14 ...
Liu, Jing; Liu, Libo; Nakamura, Takuji; Zhao, Biqiang; Ning, Baiqi; Yoshikawa, A.;
Published by: Journal of Geophysical Research: Space Physics Published on: 09/2014
YEAR: 2014   DOI: 10.1002/jgra.v119.910.1002/2014JA020273
GUVI; Ionospheric storm; prompt penetration electric fields; TIMED
Climatology of global gravity wave activity and dissipation revealed by SABER/TIMED temperature observations
Gravity wave activity and dissipation in the height range from the low stratosphere to the low thermosphere (25\textendash115 km) covering latitudes between 50\textdegreeS and 50\textdegreeN are statistically studied by using 9-year (January 22, 2002\textendashDecember 31, 2010) SABER/TIMED temperature data. We propose a method to extract realistic gravity wave fluctuations from the temperature profiles and treat square temperature fluctuations as GW activity. Overall, the gravity wave activity generally increases with he ...
Shuai, Jing; Zhang, ShaoDong; Huang, ChunMing; YI, Fan; Huang, KaiMing; Gan, Quan; Gong, Yun;
Published by: Science China Technological Sciences Published on: 05/2014
YEAR: 2014   DOI: 10.1007/s11431-014-5527-z
climatology; dissipation; gravity wave; middle and high atmosphere; SABER; TIMED
Polar cap arcs correlated with solar wind entry at the high latitude magnetosphere
Polar cap arcs are sun-aligned aurora structures occurring during northward turnings of the Interplanetary Magnetic Field (IMF) Bz component. At the same time, a new region of solar wind entry at the high latitude magnetosphere, tailward of the cusp region, was found recently at the periods of northward IMF Bz. We propose a study to see the relationship of these entry events with the transpolar arc formation. Data of Global Ultraviolet Imager (GUVI) onboard TIMED mission is examined to see the transp ...
Mailyan, B.; Shi, Q.; Gou, X.;
Published by: Published on:
YEAR: 2014   DOI: 10.1109/URSIGASS.2014.6929926
aurora interplanetary; GUVI; magnetic fields; magnetosphere; solar wind; TIMED
Statistical comparison of isolated and non-isolated auroral substorms
The present study compares isolated and non-isolated substorms in terms of their global morphology and energy deposition. The analysis is based on a list of geomagnetic substorm onsets identified with magnetometer data from SuperMAG and published previously by Newell and Gjerlove (2011a). Isolated substorms are defined as those with separation of two consecutive onsets no less than 3 h. The auroral data are obtained from the global ultraviolet imager (GUVI) on board the TIMED satellite and are rebinned into typical magnet ...
Liou, Kan; Newell, Patrick; Zhang, Yong-Liang; Paxton, Larry;
Published by: Journal of Geophysical Research: Space Physics Published on: 05/2013
YEAR: 2013   DOI: 10.1002/jgra.50218
Empirical STORM-E model: II. Geomagnetic corrections to nighttime ionospheric E-region electron densities
Auroral nighttime infrared emission observed by the Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) instrument onboard the Thermosphere\textendashIonosphere\textendashMesosphere Energetics and Dynamics (TIMED) satellite is used to develop an empirical model of geomagnetic storm enhancements to E-region electron densities. The empirical model is called STORM-E and will be incorporated into the 2012 release of the International Reference Ionosphere (IRI). The proxy for characterizing the E-region resp ...
Mertens, Christopher; Xu, Xiaojing; Bilitza, Dieter; Mlynczak, Martin; Russell, James;
Published by: Advances in Space Research Published on: 02/2013
YEAR: 2013   DOI: 10.1016/j.asr.2012.09.014
AURORA; Auroral particle precipitation; E-region; Infrared remote sensing; Ionosphere; Magnetic storm; TIMED
The quiet nighttime low-latitude ionosphere as observed by TIMED/GUVI
In this paper, we examine the nighttime ionosphere climatology structure in the low latitude region and discrepancies between Global Ultraviolet Imager (GUVI) observations and the IRI model predictions using (1) the magnetic zonal mean of electron number density as a function of altitude and magnetic latitude, (2) vertical electron density profiles at various levels of F10.7 index, (3) nighttime descent and magnitude decrease of the ionosphere, (4) point-to-point comparisons of F-peak height (hmF2) and density (NmF2), and ...
Talaat, E.R.; Yee, J.-H.; Hsieh, S.-Y.; Paxton, L.J.; DeMajistre, R.; Christensen, A.B.; Bilitza, D.;
Published by: Advances in Space Research Published on: 02/2013
YEAR: 2013   DOI: 10.1016/j.asr.2012.11.012
First look at the 20 November 2003 superstorm with TIMED/GUVI: Comparisons with a thermospheric global circulation model
The NASA TIMED/GUVI experiment obtained unprecedented far ultraviolet images of thermospheric composition and temperature during the intense geomagnetic storm on 20\textendash21 November 2003. Geographic maps of the atomic oxygen to molecular nitrogen column density ratio show severe depletions that extend to the equator near the peak of the storm. This ratio is a key indicator of how the thermospheric composition is disrupted at high latitudes and how the perturbed air moves globally as a result of dynamical forcing. For ...
Meier, R.; Crowley, G.; Strickland, D.; Christensen, A.; Paxton, L.; Morrison, D.; Hackert, C.;
Published by: Journal of Geophysical Research Published on: 09/2005
YEAR: 2005   DOI: 10.1029/2004JA010990
dayglow; geomagnetic storm; GUVI; remote sensing; thermospheric composition; TIMED