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Found 672 entries in the Bibliography.
Showing entries from 401 through 450
| 2012 |
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This paper presents our effort to assimilate FORMOSAT-3/COSMIC (F3/C) GPS Occultation Experiment (GOX) observations into the National Center for Atmospheric Research (NCAR) Thermosphere Ionosphere Electrodynamics General Circulation Model (TIE-GCM) by means of ensemble Kalman filtering (EnKF). The F3/C electron density profiles (EDPs) uniformly distributed around the globe which provide an excellent opportunity to monitor the ionospheric electron density structure. The NCAR TIE-GCM simulates the Earth\textquoterights ther ... Lee, I.; Matsuo, T.; Richmond, A.; Liu, J; Wang, W.; Lin, C.; Anderson, J.; Chen, M.; Published by: Journal of Geophysical Research Published on: 10/2012 YEAR: 2012 DOI: 10.1029/2012JA017700 data assimilation; ensemble Kalman filter; FORMOSAT-3/COSMIC; Ionosphere |
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This paper presents a study of thermospheric and ionospheric response to the 2008 minor sudden stratospheric warming (SSW) event. This period was characterized by low solar and geomagnetic activity. The study was performed using the Global Self-consistent Model of Thermosphere, Ionosphere, and Protonosphere (GSM TIP). Model results were compared with ionosonde data from Irkutsk, Kaliningrad, Sao Jose dos Campos, and Jicamarca. The SSW event was modeled by specifying the temperature and density perturbations at the lower b ... Korenkov, Y.; Klimenko, V.; Klimenko, M.; Bessarab, F.; Korenkova, N.; Ratovsky, K.; Chernigovskaya, M.; Shcherbakov, A.; Sahai, Y.; Fagundes, P.; de Jesus, R.; de Abreu, A.; Condor, P.; Published by: Journal of Geophysical Research Published on: 10/2012 YEAR: 2012 DOI: 10.1029/2012JA018018 Electric field; Ionosphere; sudden stratospheric warming; thermosphere |
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This paper presents a study of thermospheric and ionospheric response to the 2008 minor sudden stratospheric warming (SSW) event. This period was characterized by low solar and geomagnetic activity. The study was performed using the Global Self-consistent Model of Thermosphere, Ionosphere, and Protonosphere (GSM TIP). Model results were compared with ionosonde data from Irkutsk, Kaliningrad, Sao Jose dos Campos, and Jicamarca. The SSW event was modeled by specifying the temperature and density perturbations at the lower b ... Korenkov, Y.; Klimenko, V.; Klimenko, M.; Bessarab, F.; Korenkova, N.; Ratovsky, K.; Chernigovskaya, M.; Shcherbakov, A.; Sahai, Y.; Fagundes, P.; de Jesus, R.; de Abreu, A.; Condor, P.; Published by: Journal of Geophysical Research Published on: 10/2012 YEAR: 2012 DOI: 10.1029/2012JA018018 Electric field; Ionosphere; sudden stratospheric warming; thermosphere |
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Diamagnetic effects of ionospheric irregularities have been investigated at low-latitudes before, but no corresponding effort has been made at high latitudes. In this study we demonstrate clear diamagnetic signatures of high-latitude ionospheric irregularities as observed by the CHAMP satellite. We also present the climatology of these diamagnetic signatures for the years 2001\textendash2010 and compare it with a previous study based on Global Positioning System (GPS) scintillation measurements. The climatology of the dia ... Park, Jaeheung; Ehrlich, Robert; ühr, Hermann; Ritter, Patricia; Published by: Journal of Geophysical Research Published on: 10/2012 YEAR: 2012 DOI: 10.1029/2012JA018166 diamagnetic effect; high-latitude ionosphere; plasma density irregularity |
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Influence of interplanetary solar wind sector polarity on the ionosphere Knowledge of solar sector polarity effects on the ionosphere may provide some clues in understanding of the ionospheric day-to-day variability and \textquotedbllefthysteresis\textquotedblright effect on foF2. Ionospheric response to changes in solar sector polarity has not been fully documented previously, partly due to the limitation of observations. In this study, a solar-terrestrial connection ranging from solar sector boundary (SB) crossings, geomagnetic disturbances and ionospheric perturbations has been demonstrated ... Liu, Jing; Liu, Libo; Zhao, Biqiang; Wan, Weixing; Published by: Journal of Geophysical Research Published on: 08/2012 YEAR: 2012 DOI: 10.1029/2012JA017859 interplanetary magnetic field; Ionospheric disturbance; solar sector polarity |
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Influence of interplanetary solar wind sector polarity on the ionosphere Knowledge of solar sector polarity effects on the ionosphere may provide some clues in understanding of the ionospheric day-to-day variability and \textquotedbllefthysteresis\textquotedblright effect on foF2. Ionospheric response to changes in solar sector polarity has not been fully documented previously, partly due to the limitation of observations. In this study, a solar-terrestrial connection ranging from solar sector boundary (SB) crossings, geomagnetic disturbances and ionospheric perturbations has been demonstrated ... Liu, Jing; Liu, Libo; Zhao, Biqiang; Wan, Weixing; Published by: Journal of Geophysical Research Published on: 08/2012 YEAR: 2012 DOI: 10.1029/2012JA017859 interplanetary magnetic field; Ionospheric disturbance; solar sector polarity |
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This study, for the first time, presented the long-term variations of Midlatitude Summer Nighttime Anomaly (MSNA) in the two hemispheres by using 66 ground-based ionosonde observations from 1957 to 2010. MSNA is characterized by the feature of higher nighttime electron density than daytime density in the midlatitude region during local summer months. Observations from 66 ionosonde stations were used to calculate the MSNA index which is defined by the difference between nighttime and noontime NmF2 values. The MSNA ... Chen, C.; Saito, A.; Lin, C.; Liu, J; Published by: Journal of Geophysical Research Published on: 07/2012 YEAR: 2012 DOI: 10.1029/2011JA017138 ionization-uplift effect; midlatitude summer nighttime anomaly; MSNA index |
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This study, for the first time, presented the long-term variations of Midlatitude Summer Nighttime Anomaly (MSNA) in the two hemispheres by using 66 ground-based ionosonde observations from 1957 to 2010. MSNA is characterized by the feature of higher nighttime electron density than daytime density in the midlatitude region during local summer months. Observations from 66 ionosonde stations were used to calculate the MSNA index which is defined by the difference between nighttime and noontime NmF2 values. The MSNA ... Chen, C.; Saito, A.; Lin, C.; Liu, J; Published by: Journal of Geophysical Research Published on: 07/2012 YEAR: 2012 DOI: 10.1029/2011JA017138 ionization-uplift effect; midlatitude summer nighttime anomaly; MSNA index |
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Malone, Charles; Johnson, Paul; Liu, Xianming; Ajdari, Bahar; Kanik, Isik; Khakoo, Murtadha; Published by: Physical Review A Published on: 06/2012 YEAR: 2012 DOI: 10.1103/PhysRevA.85.062704 |
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The global ionospheric response to a stratospheric sudden warming (SSW) is studied using three-dimensional electron density maps derived from radio occultation observations of FORMOSAT-3/COSMIC during the 2009 SSW periods. Results show that the ionospheric electron density at EIA crests exhibit a morning/early afternoon increase followed by an afternoon decrease and an evening increase, indicative of a semidiurnal component during the SSW period, which is consistent with recent studies. The latitude-altitude electron dens ... Lin, C.; Lin, J.; Chang, L.; Liu, J; Chen, C.; Chen, W.; Huang, H.; Liu, C.; Published by: Journal of Geophysical Research Published on: 06/2012 YEAR: 2012 DOI: 10.1029/2011JA017230 FORMOSAT-3/COSMIC; ionospheric responses to stratospheric sudden warming |
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The global ionospheric response to a stratospheric sudden warming (SSW) is studied using three-dimensional electron density maps derived from radio occultation observations of FORMOSAT-3/COSMIC during the 2009 SSW periods. Results show that the ionospheric electron density at EIA crests exhibit a morning/early afternoon increase followed by an afternoon decrease and an evening increase, indicative of a semidiurnal component during the SSW period, which is consistent with recent studies. The latitude-altitude electron dens ... Lin, C.; Lin, J.; Chang, L.; Liu, J; Chen, C.; Chen, W.; Huang, H.; Liu, C.; Published by: Journal of Geophysical Research Published on: 06/2012 YEAR: 2012 DOI: 10.1029/2011JA017230 FORMOSAT-3/COSMIC; ionospheric responses to stratospheric sudden warming |
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The global ionospheric response to a stratospheric sudden warming (SSW) is studied using three-dimensional electron density maps derived from radio occultation observations of FORMOSAT-3/COSMIC during the 2009 SSW periods. Results show that the ionospheric electron density at EIA crests exhibit a morning/early afternoon increase followed by an afternoon decrease and an evening increase, indicative of a semidiurnal component during the SSW period, which is consistent with recent studies. The latitude-altitude electron dens ... Lin, C.; Lin, J.; Chang, L.; Liu, J; Chen, C.; Chen, W.; Huang, H.; Liu, C.; Published by: Journal of Geophysical Research Published on: 06/2012 YEAR: 2012 DOI: 10.1029/2011JA017230 FORMOSAT-3/COSMIC; ionospheric responses to stratospheric sudden warming |
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The global ionospheric response to a stratospheric sudden warming (SSW) is studied using three-dimensional electron density maps derived from radio occultation observations of FORMOSAT-3/COSMIC during the 2009 SSW periods. Results show that the ionospheric electron density at EIA crests exhibit a morning/early afternoon increase followed by an afternoon decrease and an evening increase, indicative of a semidiurnal component during the SSW period, which is consistent with recent studies. The latitude-altitude electron dens ... Lin, C.; Lin, J.; Chang, L.; Liu, J; Chen, C.; Chen, W.; Huang, H.; Liu, C.; Published by: Journal of Geophysical Research Published on: 06/2012 YEAR: 2012 DOI: 10.1029/2011JA017230 FORMOSAT-3/COSMIC; ionospheric responses to stratospheric sudden warming |
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The Wind Imaging Interferometer (WINDII) was launched on the NASA\textquoterights Upper Atmosphere Research Satellite on 12 September 1991 and operated until 2003. Its role in the mission was to measure vector winds in the Earth\textquoterights atmosphere from 80 to 110 km, but its measurements extended to nearly 300 km. The approach employed was to measure Doppler shifts from a suite of visible region airglow lines emitted over this altitude range. These included atomic oxygen O(1S) and O(1D) lines, ... Shepherd, G.; Thuillier, G.; Cho, Y.-M.; Duboin, M.-L.; Evans, W.; Gault, W.; Hersom, C.; Kendall, D.; Lathuillère, C.; Lowe, R.; McDade, I.; Rochon, Y.; Shepherd, M.; Solheim, B.; Wang, D.-Y.; Ward, W.; Published by: Reviews of Geophysics Published on: 06/2012 YEAR: 2012 DOI: 10.1029/2012RG000390 airglow; dynamics; interferometers; mesosphere; temperature; winds |
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Study on Far Ultraviolet Imaging Spectrometer with Grating Dispersion for Atmosphere Remote Sensing The far ultraviolet imaging spectrometer with grating dispersion is mainly used in the detection of the ionosphere, thermosphere, auroral zone and glow zone. It is important for the study and application of the remote sensing of atmosphere in China. We designed two optical systems for the far ultraviolet imaging spectrometer, and obtained the plane grating structure prototype based on the principles of nadir and limb atmospheric sounding. The prototype working at the waveband of 120~180 nm consists of an off-axis paraboli ... Yu, L.; Wang, S.; Lin, G.; Qu, Y.; Wang, L.; Published by: Spectroscopy and Spectral Analysis Published on: 03/2012 |
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The highly variable solar extreme ultraviolet (EUV) radiation is the major energy input to the Earth\textquoterights upper atmosphere, strongly impacting the geospace environment, affecting satellite operations, communications, and navigation. The Extreme ultraviolet Variability Experiment (EVE) onboard the NASA Solar Dynamics Observatory (S ... Woods, T.; Eparvier, F.; Hock, R.; Jones, A.; Woodraska, D.; Judge, D.; Didkovsky, L.; Lean, J.; Mariska, J.; Warren, H.; McMullin, D.; Chamberlin, P.; Berthiaume, G.; Bailey, S.; Fuller-Rowell, T.; Sojka, J.; Tobiska, W.; Viereck, R.; Published by: Solar Physics Published on: 01/2012 YEAR: 2012 DOI: 10.1007/s11207-009-9487-6 |
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The highly variable solar extreme ultraviolet (EUV) radiation is the major energy input to the Earth\textquoterights upper atmosphere, strongly impacting the geospace environment, affecting satellite operations, communications, and navigation. The Extreme ultraviolet Variability Experiment (EVE) onboard the NASA Solar Dynamics Observatory (S ... Woods, T.; Eparvier, F.; Hock, R.; Jones, A.; Woodraska, D.; Judge, D.; Didkovsky, L.; Lean, J.; Mariska, J.; Warren, H.; McMullin, D.; Chamberlin, P.; Berthiaume, G.; Bailey, S.; Fuller-Rowell, T.; Sojka, J.; Tobiska, W.; Viereck, R.; Published by: Solar Physics Published on: 01/2012 YEAR: 2012 DOI: 10.1007/s11207-009-9487-6 |
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Global-scale Observations of the Limb and Disk (GOLD)
Eastes, R; McClintock, W; Aksnes, A; Anderson, D; Andersson, L; Burns, A; Budzien, S; Codrescu, M; Daniell, R; Dymond, K; , others; Published by: AMC Published on: |
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Tutorial: The Neutral Atmosphere and the Satellite Drag Environment
Crowley, Geoff; Pilinski, Marcin; Azeem, Irfan; Published by: Advances in the Astronautical Sciences Published on: |
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Reisenfeld, DB; Allegrini, F; Bzowski, M; Crew, GB; DeMajistre, R; Frisch, P; Funsten, HO; Fuselier, SA; Janzen, PH; Kubiak, MA; , others; Published by: The Astrophysical Journal Published on: |
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Reversed two-cell convection in the northern and southern hemisphere during northward IMF
Lu, G; Li, W; Raeder, J; Deng, Y; Rich, F; Ober, D; Zhang, Y; Paxton, L; Ruohoniemi, M; Hairston, M; , others; Published by: Published on: |
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Schunk, Robert; Scherliess, L; Eccles, JV; Gardner, LC; Sojka, JJ; Zhu, L; Pi, X; Mannucci, A; Wilson, BD; Komjathy, A; , others; Published by: Published on: |
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Recent Progresses on Ionospheric Climatology Investigations The ionosphere varies over multiple time scales, which are classified into two categories: the climatology and weather variations. In this national report, we give a brief summary of recent progresses in ionospheric climatology with focus on (1) the seasonal variations, (2) solar cycle effects, and (3) empirical modeling of the ionosphere. The seasonal variations of the ionosphere have been explored in many works to give a more detailed picture with regional and global features at various altitudes by analyzing the obse ...
Published by: Chin. J. Space Sci. Published on: Climatological variation; Ionosphere; Ionospheric modeling; Seasonal variations; solar cycle |
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Towards ISO standard earth ionosphere and plasmasphere model Space exploration has been identified by several governments as a priority for their space agencies and commercial industry. A good knowledge and specification of the Gulyaeva, TL; Bilitza, Dieter; Published by: New developments in the standard model Published on: |
| 2011 |
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Strong evidence for couplings between the ionospheric wave-4 structure and atmospheric tides
He, Maosheng; Liu, Libo; Wan, Weixing; Wei, Yong; Published by: Geophysical Research Letters Published on: Jan-07-2011 YEAR: 2011 DOI: 10.1029/2011GL047855 |
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Ionospheric effects caused by the series of geomagnetic storms of September 9--14, 2005
Klimenko, M.; Klimenko, V.; Ratovsky, K.; Goncharenko, L.; Published by: Geomagnetism and Aeronomy Published on: Jan-06-2011 YEAR: 2011 DOI: 10.1134/S0016793211030108 |
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Ionospheric effects caused by the series of geomagnetic storms of September 9--14, 2005
Klimenko, M.; Klimenko, V.; Ratovsky, K.; Goncharenko, L.; Published by: Geomagnetism and Aeronomy Published on: Jan-06-2011 YEAR: 2011 DOI: 10.1134/S0016793211030108 |
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Latitudinal profile of UV nightglow and electron precipitations
Dmitriev, A.V.; Yeh, H.-C.; Panasyuk, M.I.; Galkin, V.I.; Garipov, G.K.; Khrenov, B.A.; Klimov, P.A.; Lazutin, L.L.; Myagkova, I.N.; Svertilov, S.I.; Published by: Planetary and Space Science Published on: Jan-06-2011 YEAR: 2011 DOI: 10.1016/j.pss.2011.02.010 |
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Study on spectral broadband aberration-corrected imaging spectrometer for far-ultraviolet waveband
Yu, Lei; Wang, Shurong; Qu, Yi; Lin, Guanyu; Published by: Optical Engineering Published on: Jan-06-2011 YEAR: 2011 DOI: 10.1117/1.3591947 |
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Marklund, G.; Sadeghi, S.; Cumnock, J.; Karlsson, T.; Lindqvist, P.-A.; Nilsson, H.; Masson, A.; Fazakerley, A.; Lucek, E.; Pickett, J.; Zhang, Y.; Published by: Journal of Geophysical Research Published on: Jan-01-2011 YEAR: 2011 DOI: 10.1029/2011JA016537 |
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Ionospheric electron content and NmF2 from nighttime OI 135.6 nm intensity
Rajesh, P.; Liu, J; Hsu, M.; Lin, C.; Oyama, K.; Paxton, L.; Published by: Journal of Geophysical Research Published on: Jan-01-2011 YEAR: 2011 DOI: 10.1029/2010JA015686 |
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Ionospheric electron content and NmF2 from nighttime OI 135.6 nm intensity
Rajesh, P.; Liu, J; Hsu, M.; Lin, C.; Oyama, K.; Paxton, L.; Published by: Journal of Geophysical Research Published on: Jan-01-2011 YEAR: 2011 DOI: 10.1029/2010JA015686 |
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The O I 135.6 nm airglow observations of the midlatitude summer nighttime anomaly by TIMED/GUVI
Hsu, M.; Lin, C.; Hsu, R.; Liu, J; Paxton, L.; Su, H.; Tsai, H.; Rajesh, P.; Chen, C.; Published by: Journal of Geophysical Research Published on: Jan-01-2011 YEAR: 2011 DOI: 10.1029/2010JA016150 |
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The O I 135.6 nm airglow observations of the midlatitude summer nighttime anomaly by TIMED/GUVI
Hsu, M.; Lin, C.; Hsu, R.; Liu, J; Paxton, L.; Su, H.; Tsai, H.; Rajesh, P.; Chen, C.; Published by: Journal of Geophysical Research Published on: Jan-01-2011 YEAR: 2011 DOI: 10.1029/2010JA016150 |
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Pumphrey, H.; Lambert, A.; Livesey, N.; Published by: Atmospheric Measurement Techniques Published on: Jan-01-2011 YEAR: 2011 DOI: 10.5194/amt-4-89-2011 |
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The production of Titan\textquoterights ultraviolet nitrogen airglow
Stevens, Michael; Gustin, Jacques; Ajello, Joseph; Evans, Scott; Meier, R.; Kochenash, Andrew; Stephan, Andrew; Stewart, Ian; Esposito, Larry; McClintock, William; Holsclaw, Greg; Bradley, Todd; Lewis, B.; Heays, A.; Published by: Journal of Geophysical Research Published on: Jan-01-2011 YEAR: 2011 DOI: 10.1029/2010JA016284 |
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Lu, G.; Li, W.; Raeder, J.; Deng, Y.; Rich, F.; Ober, D.; Zhang, Y.; Paxton, L.; Ruohoniemi, J.; Hairston, M.; Newell, P.; Published by: Journal of Geophysical Research Published on: Jan-01-2011 YEAR: 2011 DOI: 10.1029/2011JA017043 |
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TIMED/GUVI observation of solar illumination effect on auroral energy deposition
Liou, K.; Zhang, Y.-L.; Newell, P.; Paxton, L.; Carbary, J.; Published by: Journal of Geophysical Research Published on: Jan-01-2011 YEAR: 2011 DOI: 10.1029/2010JA016402 |
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Sahai, Y; De Abreu, AJ; Fagundes, PR; De Jesus, R; Crowley, G; Klimenko, MV; Klimenko, VV; Brunini, C; Gende, M; Pillat, VG; , others; Published by: Asian Journal of Physics Published on: |
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Sahai, Y; De Abreu, AJ; Fagundes, PR; De Jesus, R; Crowley, G; Klimenko, MV; Klimenko, VV; Brunini, C; Gende, M; Pillat, VG; , others; Published by: Asian Journal of Physics Published on: |
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Schwadron, Nathan; Allegrini, F; Bzowski, Maciej; Christian, ER; Crew, GB; Dayeh, M; DeMajistre, R; Frisch, P; Funsten, HO; Fuselier, SA; , others; Published by: The Astrophysical Journal Published on: |
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Yu, Lei; Wang, Shu-rong; Qu, Yi; Lin, Guan-yu; Published by: Applied optics Published on: |
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Study on spectrograph for ionosphere: a broadband imaging instrument prototype for far-ultraviolet
Yu, Lei; Wang, Shu-rong; Lin, Guan-yu; Published by: Published on: |
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Empirical Relationship Between LBH Auroral Emissions and Particle Precipitation
Hsieh, SW; Sotirelis, T; Korth, H; Zhang, Y; Paxton, LJ; Published by: Published on: |
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Onset conditions of bubbles and blobs: A case study on 2 March 2009
Kil, H; Choi, H-S; Heelis, RA; Paxton, LJ; Coley, WR; Miller, ES; Published by: Geophysical Research Letters Published on: YEAR: 2011 DOI: 10.1029/2011GL046885 |
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The OI 135.6 nm airglow observations of the midlatitude summer nighttime anomaly by TIMED/GUVI
Hsu, ML; Lin, CH; Hsu, RR; Liu, JY; Paxton, LJ; Su, HT; Tsai, HF; Rajesh, PK; Chen, CH; Published by: Journal of Geophysical Research: Space Physics Published on: |
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The OI 135.6 nm airglow observations of the midlatitude summer nighttime anomaly by TIMED/GUVI
Hsu, ML; Lin, CH; Hsu, RR; Liu, JY; Paxton, LJ; Su, HT; Tsai, HF; Rajesh, PK; Chen, CH; Published by: Journal of Geophysical Research: Space Physics Published on: |
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The international reference ionosphere today and in the future The international reference ionosphere (IRI) is the internationally recognized and recommended standard for the specification of plasma parameters in Earth’s ionosphere. It describes Bilitza, Dieter; McKinnell, Lee-Anne; Reinisch, Bodo; Fuller-Rowell, Tim; Published by: Journal of Geodesy Published on: YEAR: 2011 DOI: https://doi.org/10.1007/s00190-010-0427-x |
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Dynamic gas-surface interaction modeling for satellite aerodynamic computations Drag coefficients are a large source of uncertainty when predicting the aerodynamic forces on orbiting satellites. Accordingly, the focus of this research is to improve the fidelity of drag modeling by investigating the nature of gas-surface interactions in low earth orbit. The author has investigated to what extent oxygen adsorption can influence the parameters of drag coefficient models, most notably the energy accommodation coefficient. Published by: Published on: |
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Drag coefficients of satellites with concave geometries: comparing models and observations AERONOMIC studies make use of satellite drag measurements in the determination of thermospheric densities, enabling scientific inquiry into processes of the upper neutral Pilinski, Marcin; Argrow, Brian; Palo, Scott; Published by: Journal of Spacecraft and Rockets Published on: YEAR: 2011 DOI: https://doi.org/10.2514/1.50915 |