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Found 6 entries in the Bibliography.
Showing entries from 1 through 6
| 2013 |
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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 |
| 2007 |
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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 |
| 2004 |
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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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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 ... 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 |
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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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