Notice:
|
Found 46 entries in the Bibliography.
Showing entries from 1 through 46
2020 |
Oberheide, J; Pedatella, NM; Gan, Q; Kumari, K; Burns, AG; Eastes, RW; Published by: Geophysical Research Letters Published on: |
2019 |
The Low-Latitude Ionosphere/Thermosphere Enhancements in Density (LLITED) Mission
Bishop, Rebecca; Walterscheid, Richard; Clemmons, James; Barjatya, Aroh; Gunter, Liam; Published by: Published on: |
2018 |
At 0821 UT on 7 February 2013, during an auroral substorm, the NASA VISIONS rocket was launched northward from Poker Flat Research Range on a flight to approximately 750-km altitude that terminated in the Arctic Ocean. A subpayload jettisoned on the up leg carried a multichannel optical imager that looked downward and observed the auroral emission through four narrow passband filters. Three of the channels had sufficiently strong signal to allow a measure of the time evolution of the horizontal extent of the electron auro ... Hecht, J.; Clemmons, J.; Conde, M.; Hampton, D.; Michell, R.; Rowland, D.; Pfaff, R.; Walterscheid, R.; Published by: Journal of Geophysical Research: Space Physics Published on: 07/2018 YEAR: 2018   DOI: 10.1029/2018JA025288 |
Scientific Ballooning for Imaging Earth's Aurora under the Sun
Zhou, Xiaoyan; Rafol, SB; Hampton, Donald; He, Yutao; Lummerzheim, Dirk; Michell, Robert; Published by: Published on: |
2017 |
The Global-Scale Observations of the Limb and Disk (GOLD) Mission The Earth\textquoterights thermosphere and ionosphere constitute a dynamic system that varies daily in response to energy inputs from above and from below. This system can exhibit a significant response within an hour to changes in those inputs, as plasma and fluid processes compete to control its temperature, composition, and structure. Within this system, short wavelength solar radiation and charged particles from the magnetosphere deposit energy, and waves propagating from the lower atmosphere dissipate. Understand ... Eastes, R.; McClintock, W.; Burns, A.; Anderson, D.; Andersson, L.; Codrescu, M.; Correira, J.; Daniell, R.; England, S.; Evans, J.; Harvey, J.; Krywonos, A.; Lumpe, J.; Richmond, A.; Rusch, D.; Siegmund, O.; Solomon, S.; Strickland, D.; Woods, T.; Aksnes, A.; Budzien, S.; Dymond, K.; Eparvier, F.; Martinis, C.; Oberheide, J.; Published by: Space Science Reviews Published on: 10/2017 YEAR: 2017   DOI: 10.1007/s11214-017-0392-2 |
We present the Volume Emission Rate Tomography (VERT) technique for inverting satellite-based, multisensor limb and nadir measurements of atmospheric ultraviolet emission to create whole-orbit reconstructions of atmospheric volume emission rate. The VERT approach is more general than previous ionospheric tomography methods because it can reconstruct the volume emission rate field irrespective of the particular excitation mechanisms (e.g., radiative recombination, photoelectron impact excitation, and energetic particle pre ... Hei, Matthew; Budzien, Scott; Dymond, Kenneth; Nicholas, Andrew; Paxton, Larry; Schaefer, Robert; Groves, Keith; Published by: Radio Science Published on: 07/2017 YEAR: 2017   DOI: 10.1002/2015RS005887 |
Scheidt, DH; Hibbitts, CA; Chen, MH; Bekker, DL; Paxton, LJ; , others; Published by: Published on: |
Oberheide, Jens; Krier, Christopher; Gan, Quan; Nischal, Nirmal; Zhang, Yongliang; Chang, Loren; Published by: Published on: |
2016 |
DYNAMIC: A Decadal Survey and NASA Roadmap Mission
Paxton, Larry; Oberheide, Jens; Published by: Published on: |
2015 |
SSULI/SSUSI UV tomographic images of large-scale plasma structuring
Hei, Matthew; Budzien, Scott; Dymond, Kenneth; Paxton, Larry; Schaefer, Robert; Groves, Keith; Published by: Published on: |
Thermal cell structures in the high-latitude thermosphere induced by ion drag
Published by: Journal of Geophysical Research: Space Physics Published on: |
2014 |
The CERTO radio beacon on the C/NOFS satellite sends VHF/UHF radio signals at 150 and 400 MHz to provide measurements of integrated electron density or Total Electron Content (TEC) by an east-west chain of ground receivers in Peru. Computerized Ionospheric Tomography (CIT) is used to convert the TEC data into two-dimensional images of electron densities with maximum 5 \texttimes 5 km resolution in Longitude-Altitude space. These images are updated every 95 min as the C/NOFS satellite passes over the receiver network in it ... Bernhardt, Paul; Hei, Matthew; Siefring, Carl; Wilkens, Matthew; Published by: Radio Science Published on: 07/2014 YEAR: 2014   DOI: 10.1002/2014RS005409 |
2013 |
[1]\ Measurements of the Earth\textquoterights low latitude thermosphere returned by the ionization gauge on the Streak mission are reported and discussed. The measurements are of the amount of gas rammed into the sensor by its passage through the thermospheric medium. They were obtained in the dusk sector in the altitude range 130\textendash330 km and are shown to be strongly structured by the geomagnetic field. Similarities to the structure of the equatorial ionization anomaly are discussed. The structure is interp ... Clemmons, J.; Walterscheid, R.; Christensen, A.; Bishop, R.; Published by: Journal of Geophysical Research: Space Physics Published on: 02/2013 YEAR: 2013   DOI: 10.1029/2012JA017661 |
2012 |
Hecht, J.; Mulligan, T.; Correira, J.; Clemmons, J.; Strickland, D.; Walterscheid, R.; Conde, M.; Published by: Journal of Geophysical Research Published on: Jan-01-2012 YEAR: 2012   DOI: 10.1029/2011JA017146 |
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 |
2011 |
Oberheide, J.; Forbes, J.; Zhang, X.; Bruinsma, S.; Published by: Journal of Geophysical Research Published on: Jan-01-2011 YEAR: 2011   DOI: 10.1029/2010JA015911 |
2010 |
The November 2004 superstorm: Comparison of low-latitude TEC observations with LLIONS model results
Hei, Matthew; Valladares, Cesar; Published by: Journal of Atmospheric and Solar-Terrestrial Physics Published on: Jan-03-2010 YEAR: 2010   DOI: 10.1016/j.jastp.2009.03.025 |
Dynamic variability in F-region ionospheric composition at auroral arc boundaries
Zettergren, M.; Semeter, J.; Burnett, B.; Oliver, W.; Heinselman, C.; Blelly, P.-L.; Diaz, M.; Published by: Annales Geophysicae Published on: Jan-01-2010 YEAR: 2010   DOI: 10.5194/angeo-28-651-2010 |
2009 |
Large-scale instabilities of the lower thermosphere during an active period
Published by: Journal of Geophysical Research: Space Physics Published on: |
Observations of ionospheric heating during the passage of solar coronal hole fast streams
Sojka, Jan; McPherron, RL; Van Eyken, AP; Nicolls, MJ; Heinselman, CJ; Kelly, JD; Published by: Geophysical research letters Published on: |
Richards, PG; Nicolls, MJ; Heinselman, CJ; Sojka, JJ; Holt, JM; Meier, RR; Published by: Journal of Geophysical Research: Space Physics Published on: |
2008 |
Tidal propagation of deep tropical cloud signatures into the thermosphere from TIMED observations
Published by: Geophysical Research Letters Published on: Jan-01-2008 YEAR: 2008   DOI: 10.1029/2007GL032397 |
Paired Ionosphere-Thermosphere Orbiters (PITO): Science and Implementation
Nigg, DA; Clemmons, JH; Walterscheid, RL; Jolly, R; Published by: Americal Geophysical Union, Fall Published on: |
2007 |
A climatology of nonmigrating semidiurnal tides from TIMED Doppler Interferometer (TIDI) wind data
Oberheide, J.; Wu, Q.; Killeen, T.L.; Hagan, M.E.; Roble, R.G.; Published by: Journal of Atmospheric and Solar-Terrestrial Physics Published on: Jan-12-2007 YEAR: 2007   DOI: 10.1016/j.jastp.2007.05.010 |
2006 |
Wescott, E.; Stenbaek-Nielsen, H.; Conde, M.; Larsen, Miguel; Lummerzheim, Dirk; Published by: Journal of Geophysical Research Published on: Jan-01-2006 YEAR: 2006   DOI: 10.1029/2005JA011002 |
2005 |
Orbital Drag-Atmospheric Density Concept of Operations2004 Update The Global UV Imager (GUVI), a predecessor instrument to SSUSI, has shown promising, though limited, comparison to orbit-based densities. Current operations at the SCC rely on Buell, Diane; Walterscheid, Richard; Marcos, Frank; Fuller-Rowell, Tim; Picone, J; Storz, Mark; Owens, Jerry; Published by: Published on: |
Seasonal and longitudinal variation of large-scale topside equatorial plasma depletions We examine the large-scale properties of three classes of equatorial topside plasma depletions referred to as channels. In order of increasing zonal width and internal large-scale substructuring, we study simple channels, multichannels, and superchannels. We find that peaks in channel activity are centered on 0° (African sector) and 180° (Western Pacific sector). Superchannels are found to strongly dominate in the African sector, whereas simple and multichannels dominate the Pacific sector. Within the African sector, the r ... Hei, M.; Heelis, R.; McClure, J.; Published by: Journal of Geophysical Research: Space Physics Published on: YEAR: 2005   DOI: https://doi.org/10.1029/2005JA011153 |
CEDAR/TIMED: Thermospheric Vertical Wind Observations from Three Sites in the Northern Auroral Zone
Published by: Published on: |
2004 |
Contribution of proton precipitation to space-based auroral FUV observations Imaging from space offers a unique way to access the global picture, and its temporal variability, of the particle energy input over the auroral ovals. Electron characteristics are inferred from the analysis of auroral images taken from space in two different spectral bands in UV or visible. Usually, only the electron component of the precipitation is considered, as most of the particle energy is carried by electrons. However, at some locations and certain times protons are a major energy source, that is, a major ionizati ... Published by: Journal of Geophysical Research Published on: 03/2004 YEAR: 2004   DOI: 10.1029/2003JA010321 |
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 |
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 |
Autonomous satellite navigation system
Devereux, William; Heins, Robert; Chacos, Albert; Linstrom, Lloyd; Asher, Mark; Duven, Dennis; Gruenbacher, Don; Kusterer, Thomas; Strohbehn, Kim; Morgan, Richard; , others; Published by: Published on: aug |
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: |
Galand, Marina; Lummzheim, Dirk; Frey, HU; Paxton, LJ; Christensen, AB; Published by: Published on: |
Krynicki, MP; Conde, M; Lummerzheim, D; Paxton, L; Ishii, M; Published by: Published on: |
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: |
Conde, MG; Krynicki, MP; Lummerzheim, D; 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: |
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: |
Dayside auroras during storms of April 2002: TIMED/GUVI observations
Zhang, Y; Paxton, L; Morrison, D; Wolven, B; Kil, H; Meng, C; Christensen, A; Straus, P; Walterscheid, R; Crowley, G; , others; Published by: Published on: |
Dayglow Imagery and O/N 2 Ratios Observed from the TIMED/GUVI Sensor: An Early Assessment
Morrison, D; Paxton, LJ; Zhang, Y; Wolven, BC; Kil, H; Meng, CI; Christensen, AB; Walterscheid, R; Strickland, D; 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: |
1994 |
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: |
1