2018 |
Material flux from the rings of Saturn into its atmosphere
Perry, ME; , Waite; Mitchell, DG; Miller, KE; Cravens, TE; Perryman, RS; Moore, L; Yelle, RV; Hsu, H-W; Hedman, MM; , others;
Published by: Geophysical Research Letters Published on:
YEAR: 2018   DOI:
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2013 |
Multiple neutral density measurements in the lower thermosphere with cold-cathode ionization gauges
Cold-cathode ionization gauges were used for rocket-borne measurements of total neutral density and temperature in the aurorally forced lower thermosphere between 90 and 200\ km. A commercial gauge was adapted as a low-cost instrument with a spherical antechamber for measurements in molecular flow conditions. Three roll-stabilized payloads on different trajectories each carried two instruments for measurements near the ram flow direction along the respective upleg and downleg segments of a flight path, and six densit ...
Lehmacher, G.A.; Gaulden, T.M.; Larsen, M.F.; Craven, J.D.;
Published by: Journal of Atmospheric and Solar-Terrestrial Physics Published on: 01/2013
YEAR: 2013   DOI: 10.1016/j.jastp.2012.11.002
Instruments and techniques; Pressure density and temperature; thermosphere
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2008 |
Aeronomy science based on NASA TIMED/GUVI ultraviolet images of the Earth
Christensen, Andrew; Craven, John; Crowley, Geoff; Meier, Robert; Paxton, Larry;
Published by: 37th COSPAR Scientific Assembly Published on:
YEAR: 2008   DOI:
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2007 |
First terrestrial soft X-ray auroral observation by the Chandra X-ray Observatory
Bhardwaj, Anil; Gladstone, Randall; Elsner, Ronald; Ostgaard, Nikolai; Waite, Hunter; Cravens, Thomas; Chang, Shen-Wu; Majeed, Tariq; Metzger, Albert;
Published by: Journal of Atmospheric and Solar-Terrestrial Physics Published on: Jan-02-2007
YEAR: 2007   DOI: 10.1016/j.jastp.2006.07.011
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Validation of ISS Floating Potential Measurement Unit Electron Densities and Temperatures
Validation of the Floating Potential Measurement Unit (FPMU) electron density and temperature measurements is an important step in the process of evaluating International Space Station spacecraft charging issues .including vehicle arcing and hazards to crew during extravehicular activities. The highest potentials observed on Space Station are due to the combined VxB effects on a large spacecraft and the collection of ionospheric electron and ion currents by the 160 V US solar array modules. Ionospheric electron environmen ...
Coffey, V.; Minow, J.; Schneider, T.; Vaughn, J.; Craven, P.; Parker, L.; Bui, T.; Wright, K.; Koontz, S.;
Published by: Published on: 06/2007
YEAR: 2007   DOI:
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Validation of ISS Floating Potential Measurement Unit Electron Densities and Temperatures
Coffey, Victoria; Minow, Joseph; Parker, Linda; Bui, Them; , Wright; Koontz, Steven; Schneider, T; Vaughn, J; Craven, P;
Published by: Published on:
YEAR: 2007   DOI:
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Thermospheric O/N2 in the Sunlit Disk From More Than Five Years of GUVI/TIMED Observations
Craven, JD; Christensen, AB; Paxton, LJ;
Published by: Published on:
YEAR: 2007   DOI:
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2006 |
Effect of IMF By on thermospheric composition at high and middle latitudes: 2. Data comparisons
Immel, Thomas; Crowley, Geoff; Hackert, Chris; Craven, John; Roble, Ray;
Published by: Journal of Geophysical Research: Space Physics Published on:
YEAR: 2006   DOI:
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Thermospheric O/N2 ratio observations obtained over more than four years with the GUVI instrument in the TIMED spacecraft mission
Craven, JD; Christensen, AB; Paxton, LJ; Strickland, DJ;
Published by: Published on:
YEAR: 2006   DOI:
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The importance of high latitude inputs in correctly modeling the magnitude and extend of thermospheric storms
Immel, Thomas; Crowley, Geoff; Craven, John;
Published by: Adv. Space Res Published on:
YEAR: 2006   DOI:
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2005 |
The High-Latitude Knee of the O/N2 Ratio Profile: Latitudinal Variations with UT, Local Time, Season, and Magnetic Activity
Craven, JD; Christensen, AB; Meier, RR; Paxton, LJ; Strickland, DJ;
Published by: Published on:
YEAR: 2005   DOI:
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2004 |
Quiet-time seasonal behavior of the thermosphere seen in the far ultraviolet dayglow
The TIMED/GUVI instrument is a far ultraviolet spectrograph that obtains images in five spectrally resolved wavelength channels. These images yield information on the dayside composition, temperature, solar EUV flux, large-scale wave structures, and auroral processes. In this paper we present an overview analysis of Earth-disk images for four seasons (March, July, and September 2002 and January 2003). Days were selected during geomagnetically quiet periods when the Sun was nearly in the orbital plane (noon orbits). Two of ...
Strickland, D.; Meier, R.; Walterscheid, R.; Christensen, A.; Paxton, L.; Morrison, D.; Craven, J.; Crowley, G.;
Published by: Journal of Geophysical Research Published on: 01/2004
YEAR: 2004   DOI: 10.1029/2003JA010220
far ultraviolet; remote sensing; seasonal behavior; thermosphere
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Thermospheric Composition Changes in the Morning Sector near Local Midnight in Association with Substorm Activity and IMF Orientation
Craven, JD; Christensen, AB; Meier, RR; Paxton, LJ; Strickland, DJ;
Published by: Published on:
YEAR: 2004   DOI:
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Solar EUV irradiance variability derived from terrestrial far ultraviolet dayglow observations
Remotely sensed ultraviolet emissions from the Earth s upper atmosphere are shown to mirror fluctuations in solar EUV irradiance during July 2002, including the overall increase and decrease as the Sun rotated, and episodic increases associated with multiple solar flares. The TIMED/GUVI dayglow observations are used to derive a new quantity, QEUVGUVI, which is a measure of integrated solar EUV electromagnetic energy shortward of 45 nm. Both the absolute QEUVGUVI values and their modulation by solar rotation agree well with t ...
Strickland, D.J.; Lean, J.L.; Meier, R.R.; Christensen, A.B.; Paxton, L.J.; Morrison, D.; Craven, J.D.; Walterscheid, R.L.; Judge, D.L.; McMullin, D.R.;
Published by: Geophysical research letters Published on:
YEAR: 2004   DOI: 10.1029/2003GL018415
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2003 |
Automatic Detection of Equatorial Plasma Bubbles in GUVI Data
Henderson, S; Swenson, C; Straus, P; Kil, H; Christensen, A; Paxton, L; Morrison, D; Crowley, G; Meier, R; Craven, J; , others;
Published by: Published on:
YEAR: 2003   DOI:
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The Sun-Earth Connection as Viewed from GUVI on TIMED
Paxton, L; Christensen, A; Avery, S; Craven, J; Crowley, G; Meier, R; Meng, C; Srickland, D; Swenson, C; Walterscheid, R; , others;
Published by: Published on:
YEAR: 2003   DOI:
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Search for thermospheric composition changes in the morning sector near local midnight in association with intense substorm activity
Craven, JD; Strickland, DJ; Meier, RR; Crowley, G; Christensen, AB; Paxton, LJ; Morrison, D; Avery, SK; Meng, C; Straus, PR; , others;
Published by: Published on:
YEAR: 2003   DOI:
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Retrieval of thermospheric temperature and N2, O, and O2 concentrations from GUVI limb scans
Meier, RR; Strickland, DJ; Picone, JM; Christensen, AB; Paxton, LJ; Morrison, D; Kil, H; Bishop, J; Drob, D; Craven, JD; , others;
Published by: Published on:
YEAR: 2003   DOI:
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Initial observations with the Global Ultraviolet Imager (GUVI) in the NASA TIMED satellite mission
The Global Ultraviolet Imager (GUVI) instrument carried aboard the NASA TIMED satellite measures the spectral radiance of the Earth\textquoterights far ultraviolet airglow in the spectral region from 120 to 180 nm using a cross-track scanning spectrometer design. Continuous operation of the instrument provides images of the Earth\textquoterights disk and limb in five selectable spectral bands. Also, spectra at fixed scanning mirror position can be obtained. Initial results demonstrate the quantitative functionality of the ...
Christensen, AB; Paxton, LJ; Avery, S; Craven, J; Crowley, G; Humm, DC; Kil, H; Meier, RR; Meng, C-I; Morrison, D; , others;
Published by: Journal of Geophysical Research: Space Physics (1978\textendash2012) Published on:
YEAR: 2003   DOI: 10.1029/2003JA009918
airglow; AURORA; ultraviolet; imaging; satellite; atmosphere
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2002 |
Products Derived From GUVI Dayglow and Auroral Data
Strickland, DJ; Christensen, A; Meier, R; Paxton, L; Morrison, D; Craven, J; Crowley, G; Waltersheid, R; Avery, S; Meng, C;
Published by: Published on:
YEAR: 2002   DOI:
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Global Ultaviolet Imager (GUVI): on-Orbit Performance and Initial Results
Christensen, AB; Strickland, D; Paxton, L; Morrison, D; Crowley, G; Meier, R; Craven, J; Meng, C; Swenson, C; Walterscheid, R; , others;
Published by: Published on:
YEAR: 2002   DOI:
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Search for Thermospheric Composition Changes in the Morning Sector near Local Midnight in Association with Substorm Activity
Craven, JD; Strickland, DJ; Meier, RR; Crowley, G; Christensen, AB; Paxton, LJ; Morrison, D; Avery, SK; Meng, C; Straus, PR; , others;
Published by: Published on:
YEAR: 2002   DOI:
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Thermospheric composition derived from TIMED/GUVI limb scans
Meier, RR; Strickland, DJ; Christensen, AB; Paxton, LJ; Morrison, MD; Craven, JD; Crowley, G; Walterscheid, RL; Avery, SK; Meng, CI;
Published by: Published on:
YEAR: 2002   DOI:
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$\$GUVI$\$ Observations of Night Time Ionospheric Morphology
Swenson, CM; Christensen, AB; Walterscheid, RJ; Paxton, LJ; Meng, CI; Craven, JD; Meier, RR; Strickland, DJ; Crowley, G;
Published by: Published on:
YEAR: 2002   DOI:
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Exploiting Web-Based Systems to Provide Interactive Interpretation, Access and Display of Far Ultraviolet Data from the Global Ultraviolet Imager (GUVI) on TIMED
Weiss, MB; Paxton, LJ; Barnes, RJ; Eichert, JJ; Wood, WC; Morrison, D; Christensen, AB; Strickland, DJ; Craven, JD; Meier, RR; , others;
Published by: Published on:
YEAR: 2002   DOI:
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Seasonal Variation of Thermospheric Composition as Measured by TIMED/GUVI
Crowley, G; Paxton, LJ; Christensen, AB; Morrison, D; Strickland, DJ; Craven, JD; Meier, R; Straus, P; Walterscheid, R; Meng, C; , others;
Published by: Published on:
YEAR: 2002   DOI:
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Thermospheric and Ionospheric Response to the Solar Flares of April 2002 as Observed by the TIMED Global UltraViolet Imager (GUVI)
Wolven, B; Paxton, L; Morrison, D; Zhang, Y; Kil, H; Meng, C; Christensen, A; Straus, PR; Walterscheid, R; Craven, JD; , others;
Published by: Published on:
YEAR: 2002   DOI:
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Thermospheric Composition: GUVI Observations of O/N2
Christensen, AB; Strickland, DJ; Paxton, LJ; Morrison, D; Crowley, G; Meier, RR; Craven, JD; Meng, CI; Swenson, CM; Walterscheid, RL; , others;
Published by: Published on:
YEAR: 2002   DOI:
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Data Visualization Tools and Techniques developed for the TIMED/GUVI Instrument
Morrison, D; Barnes, R; Paxton, L; Weiss, M; Wolven, B; Christensen, A; Craven, J; Crowley, G; Avery, S; Meier, R; , others;
Published by: Published on:
YEAR: 2002   DOI:
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A Quantitative Image Processing Approach to GUVI Observations of the Equatorial Arcs.
Henderson, S; Straus, PR; Swenson, CM; Kil, H; Christensen, A; Paxton, LJ; Crowley, G; Meier, RR; Morrison, D; Craven, JD; , others;
Published by: Published on:
YEAR: 2002   DOI:
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2001 |
The Solar Connections Observatory for Planetary Environments (SCOPE)
Oliversen, R; Harris, W; Ballester, G; Bougher, S; Broadfoot, L; Combi, M; Cravens, T; Gombosi, T; Herbert, F; Joseph, C; , others;
Published by: Published on:
YEAR: 2001   DOI:
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Negative ionospheric storm coincident with DE 1-observed thermospheric disturbance on October 14, 1981
Strickland, DJ; Daniell, RE; Craven, JD;
Published by: Journal of Geophysical Research: Space Physics Published on:
YEAR: 2001   DOI:
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1994 |
Variations in the FUV dayglow after intense auroral activity
Craven, JD; Nicholas, AC; Frank, LA; Strickland, DJ; Immel, TJ;
Published by: Geophysical research letters Published on:
YEAR: 1994   DOI:
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Global ultraviolet imager (GUVI) for the NASA Thermosphere-Ionsphere-Mesosphere Energetics and Dynamics (TIMED) mission
Christensen, Andrew; Walterscheid, Richard; Ross, Martin; Meng, Ching-I; Paxton, Larry; Anderson, Donald; Crowley, Geoffrey; Avery, Susan; Craven, John; Meier, Robert; , others;
Published by: Published on:
YEAR: 1994   DOI:
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1993 |
Thermal nitrogen (+) in the inner magnetosphere
Craven, Paul;
Published by: Published on:
YEAR: 1993   DOI:
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1985 |
Models of Venus neutral upper atmosphere: Structure and composition
Keating, GM; Bertaux, JL; Bougher, SW; Dickinson, RE; Cravens, Tom; Nagy, Andrew; Hedin, AE; Krasnopolsky, VA; , Nicholson; Paxton, LJ; , others;
Published by: Advances in Space Research Published on:
YEAR: 1985   DOI:
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Bauer, SJ 233 Moroz, V. 1. 3,173,197 Bertaux, JL 117 Moshkin, BE 197 Bougher, SW 117 Brace, LM 233 Nagy, AF 117,233 Breus, TK 233 Nicholson, JY, LII 117
Cravens, TE; Paxton, LJ; Dickinson, RE; Ragent, B; Revercoinb, HE; Ekonomov, AP; Russell, CT; Esposito, LW; Savich, NA; Hedin, AE; , others;
Published by: Published on:
YEAR:   DOI:
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Humm, 686 DC,... Zhang, Y.(2003). Initial observations with the Global Ultra-687 violet Imager (GUVI) in the NASA TIMED satellite mission
Christensen, AB; Paxton, LJ; Avery, S; Craven, J; Crowley, G;
Published by: Journal of Published on:
YEAR:   DOI:
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