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Found 8 entries in the Bibliography.
Showing entries from 1 through 8
Global ionospheric response to the 2009 sudden stratospheric warming event using Ionospheric Data Assimilation Four-Dimensional (IDA4D) algorithm
A data assimilation algorithm is used to delineate the time-dependent three-dimensional ionospheric response to the 2009 sudden stratospheric warming (SSW) event. We use the Ionospheric Data Assimilation Four-Dimensional (IDA4D) algorithm to study the global ionospheric response to the 2009 SSW. This is the first study to utilize global ionospheric measurements in a data assimilation framework to unambiguously characterize atmosphere-ionosphere coupling via tidal modifications during the 2009 SSW event. Model results reve ...
Azeem, I.; Crowley, G.; Honniball, C.;
Published by: Journal of Geophysical Research: Space Physics Published on: 05/2015
YEAR: 2015   DOI: 10.1002/2015JA020993
atmospheric tides; Data Assimilation; ionosphere/atmosphere interactions; sudden stratospheric warming
A new technique for remote sensing of O 2 density from 140 to 180 km
Observations of molecular oxygen are difficult to make in the Earth\textquoterights atmosphere between 140 and 200 km altitude. Perhaps the most accurate measurements to date have been obtained from satellite instruments that measure solar occultations of the limb. These do provide height-resolved O2 density measurements, but the nature of this technique is such that the temporal/spatial distribution of the measurements is uneven. Here a new space-based technique is described that utilizes two bright dayglow em ...
Hecht, James; Christensen, Andrew; Yee, Jeng-Hwa; Crowley, Geoff; Bishop, Rebeeca; Budzien, Scott; Stephan, Andrew; Evans, Scott;
Published by: Geophysical Research Letters Published on: 01/2015
YEAR: 2015   DOI: 10.1002/2014GL062355
Remote Sensing of Earth\textquoterights Limb by TIMED/GUVI: Retrieval of thermospheric composition and temperature
The Global Ultraviolet Imager (GUVI) onboard the Thermosphere-Ionosphere-Mesosphere Energetics and Dynamics (TIMED) satellite senses far ultraviolet emissions from O and N2 in the thermosphere. Transformation of far ultraviolet radiances measured on the Earth limb into O, N2, and O2 number densities and temperature quantifies these responses and demonstrates the value of simultaneous altitude and geographic information. Composition and temperature variations are available from 2002 to 2007 ...
Meier, R.; Picone, J.; Drob, D.; Bishop, J.; Emmert, J.; Lean, J.; Stephan, A.; Strickland, D.; Christensen, A.; Paxton, L.; Morrison, D.; Kil, H.; Wolven, B.; Woods, Thomas; Crowley, G.; Gibson, S.;
Published by: Earth and Space Science Published on: 01/2015
YEAR: 2015   DOI: 10.1002/2014EA000035
airglow and aurora; thermosphere: composition and chemistry; thermosphere: energy deposition; remote sensing
Global Ultra-Violet Ionosphere-Thermosphere Observatory (GUVITO)
Curtis, N; Crowley, G; Christensen, AB; Paxton, LJ; Robichaud, J; Barry, MA; Bust, GS;
Published by: Published on:
The use of far ultraviolet remote sensing to monitor space weather
Paxton, Larry; Morrison, Daniel; Strickland, Douglas; McHarg, M.Geoff; Zhang, Yongliang; Wolven, Brian; Kill, Hyosub; Crowley, Geoff; Christensen, Andrew; Meng, Ching-I;
Published by: Advances in Space Research Published on: Jan-01-2003
YEAR: 2003   DOI: 10.1016/S0273-1177(02)00886-4
Initial observations with the Global Ultraviolet Imager (GUVI) in the NASA TIMED satellite mission
Christensen, AB; Paxton, LJ; Avery, S; Craven, J; Crowley, G; Humm, DC; Kil, H; Meier, RR; Meng, C-I; Morrison, D;
Published by: Journal of Geophysical Research: Space Physics (1978\textendash2012) Published on:
YEAR: 2003   DOI: 10.1029/2003JA009918
Interactive interpretation and display of far ultraviolet data
Paxton, L.J; Spisz, T; Crowley, G; Gary, R; Hopkins, M.M; Morrison, D; Wiess, M; Fountain, G.H; Suther, L; Meng, C.-I; Strickland, D.J;
Published by: Advances in Space Research Published on: Jan-01-1998
YEAR: 1998   DOI: 10.1016/S0273-1177(99)00116-7
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; Strickland, Douglas;
Published by: Published on:
YEAR: 1994   DOI: 10.1117/12.187583