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Found 38 entries in the Bibliography.
Showing entries from 1 through 38
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: |
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 |
2008 |
Validation of the Plasma Densities and Temperatures From the ISS Floating Potential Measurement Unit The validation of the floating potential measurement unit (FPMU) plasma density and temperature measurements is an important step in the process of evaluating International Space Station (ISS) spacecraft charging issues including vehicle arcing and hazards to crew during extravehicular activities. The highest potentials observed on the Space Station are due to the combined Vsp times B effects on a large spacecraft and the collection of ionospheric electron and ion currents by the 160-V U.S. solar array modules. The ionospher ... Coffey, Victoria; Wright, Kenneth; Minow, Joseph; Schneider, Todd; Vaughn, Jason; Craven, Paul; Chandler, Michael; Koontz, Steven; Parker, Linda; Bui, Them; Published by: IEEE Transactions on Plasma Science Published on: Oct YEAR: 2008   DOI: 10.1109/TPS.2008.2004271 |
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: |
This article reviews our understanding of the ionospheres in the solar system. It provides some basic information on the sources and sinks of the ionospheric plasma, its dynamics, the energetics and the coupling to the neutral atmosphere. Ionospheres in the solar system are reviewed and comparative ionospheric topics are discussed. Witasse, O; Cravens, T; Mendillo, M; Moses, J; Kliore, A; Nagy, AF; Breus, T; Published by: Comparative Aeronomy Published on: |
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 |
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 |
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: |
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: |
Craven, JD; Christensen, AB; Paxton, LJ; Strickland, DJ; Published by: Published on: |
Immel, Thomas; Crowley, Geoff; Craven, John; Published by: Adv. Space Res Published on: |
Effect of IMF BY on thermospheric composition at high and middle latitudes: 1. Numerical experiments Magnetic storms and their effects on the thermosphere and ionosphere have been studied for many years, yet there are many aspects of the thermospheric and ionospheric responses that are not understood. The purpose of this paper is to show how the high-latitude composition depends on the sign of the IMF BY component, using controlled simulations with a global first principles model. Because the high-latitude convection and neutral wind systems are strongly controlled by the IMF BY component, it seems likely that the compositi ... Crowley, G.; Immel, T.; Hackert, C.; Craven, J.; Roble, R.; Published by: Journal of Geophysical Research: Space Physics Published on: YEAR: 2006   DOI: https://doi.org/10.1029/2005JA011371 |
2005 |
Craven, JD; Christensen, AB; Meier, RR; Paxton, LJ; Strickland, DJ; Published by: Published on: |
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 |
Craven, JD; Christensen, AB; Meier, RR; Paxton, LJ; Strickland, DJ; Published by: Published on: |
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 |
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: |
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: |
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: |
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: |
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 |
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: |
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: |
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: |
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: |
$\$GUVI$\$ 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: |
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: |
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: |
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: |
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: |
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: |
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: |
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: |
Strickland, DJ; Daniell, RE; Craven, JD; Published by: Journal of Geophysical Research: Space Physics Published on: |
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: |
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: |
1993 |
Thermal nitrogen (+) in the inner magnetosphere
Published by: Published on: |
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: |
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