| 2021 |
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Far Ultraviolet Hyperspectral Imager: NASA's TIMED/GUVI and DMSP SSUSI
Paxton, Larry; Zhang, Yongliang; Schaefer, Robert; Kil, Hyosub; Wolven, Brian; Romeo, Giuseppe; Yonker, Justin;
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YEAR: 2021 DOI:
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Large Electron Densities in the Early Morning Equatorial Ionosphere Observed with UV Instruments from Space
Schaefer, Robert; Paxton, Larry; Zhang, Yongliang; Kil, Hyosub; Romeo, Giuseppe; Wolven, Brian; Yonker, Justin;
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YEAR: 2021 DOI:
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| 2019 |
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Addressing O2R with the SSUSI Operational Space Sensor: Lessons Learned
Schaefer, Robert; Paxton, Larry; Romeo, Giuseppe; Kil, Hyosub; Wolven, Brian; Zhang, Yongliang;
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YEAR: 2019 DOI:
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| 2017 |
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A New More Accurate Calibration for TIMED/GUVI
Schaefer, RK; Aiello, J; Wolven, BC; Paxton, LJ; Romeo, G; Zhang, Y;
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YEAR: 2017 DOI:
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| 2016 |
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Observation and Modeling of the South Atlantic Anomaly in Low Earth Orbit Using Photometric Instrument Data
Selby, Christina; Paxton, LJ; Schaefer, RK; Ogorzalek, B; Romeo, G; Wolven, B; Hsieh, SY;
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YEAR: 2016 DOI:
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| 2015 |
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Remote sensing of Earth's 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; remote sensing; thermosphere: composition and chemistry; thermosphere: energy deposition
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UV Observations of Hemispheric Asymmetry
Schaefer, Robert; Paxton, Larry; Wolven, Brian; Zhang, Yongliang; Romeo, Giuseppe;
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YEAR: 2015 DOI:
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| 2014 |
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Updated Global Data from the Guvi Instrument: New Products, Updated Calibration, and a New Web Interface
Schaefer, Robert; Paxton, Larry; Romeo, Giuseppe; Wolven, Brian; Zhang, Yongliang; Comberiate, Joseph;
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YEAR: 2014 DOI:
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| 2013 |
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Multi-Instrument Observations at High Latitudes
Miller, E; Paxton, L; Schaefer, RK; Weiss, M; Wolven, BC; Zhang, Y;
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YEAR: 2013 DOI:
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Observing the Edge of the Inner Radiation Belt: the South Atlantic Anomaly Seen with Photometers in Low Earth Orbit
Schaefer, RK; Wolven, BC; Paxton, L; Romeo, G; Selby, C; Hsieh, SW;
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YEAR: 2013 DOI:
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Global propagation of gravity waves generated with the whole atmosphere transfer function model
Mayr, Hans; Talaat, Elsayed; Wolven, Brian;
Published by: Journal of Atmospheric and Solar-Terrestrial Physics Published on:
YEAR: 2013 DOI:
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UV Remote Sensing Data Products-Turning Data Into Knowledge
Weiss, M; Paxton, L; Schaefer, RK; Comberiate, J; Hsieh, SW; Romeo, G; Wolven, BC; Zhang, Y;
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YEAR: 2013 DOI:
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SSUSI: A Newly Available Resource for the Upper Atmosphere Community to Study the Global Response of the Coupled Ionosphere Thermosphere System
Paxton, L; Schaefer, RK; Weiss, M; Wolven, BC; Zhang, Y; Miller, E; Bust, GS; Romeo, G;
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YEAR: 2013 DOI:
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| 2012 |
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Space Weather Products from UV Imagers in Low Earth Orbit-Providing Key Information about the ITM Environment
Romeo, G; Paxton, LJ; Schaefer, RK; DeMajistre, R; Comberiate, J; Hsieh, SW; Miller, ES; Weiss, M; Wolven, BC; Zhang, Y;
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YEAR: 2012 DOI:
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Ultraviolet Remote Sensing of Nitric Oxide in the Thermosphere Using the TIMED/GUVI Instrument
DeMajistre, R; Wolven, BC; Paxton, LJ; Zhang, Y; Schaefer, RK; Bailey, SM; Yonker, JD; Thurairajah, B;
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YEAR: 2012 DOI:
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New and Improved GUVI Data Products for ITM Research
Schaefer, RK; Paxton, LJ; DeMajistre, R; Comberiate, J; Hsieh, SW; Miller, ES; Romeo, G; Weiss, M; Wolven, BC; Zhang, Y;
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YEAR: 2012 DOI:
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| 2011 |
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Ten Years of GUVI Data: The Updated GUVI Far UV Data Archive
Wolven, B; Schaefer, R; Paxton, L; Holland, D; Zhang, Y; Christensen, A;
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YEAR: 2011 DOI:
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| 2010 |
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Enhanced UV Data Products-Observing the Ionosphere in Greater Fidelity
Wolven, BC; Paxton, LJ; Comberiate, J; Hsieh, SW; , Nylund; Schaefer, RK; Selby, C; Smith, D; Weiss, M; Zhang, Y;
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YEAR: 2010 DOI:
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| 2009 |
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Global observations of the equatorial ionosphere by UV remote sensing
Paxton, Larry; Comberiate, Joseph; Kil, Hyosub; Schaefer, Robert; Wolven, Brian; Zhang, Yongliang; Morrison, Daniel;
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YEAR: 2009 DOI:
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Visualization and Analysis of Spectrograph-mode Data Products from Far Ultraviolet Scanning Imaging Sensors
Wolven, BC; Schaefer, RK; Hsieh, SW; Paxton, LJ;
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YEAR: 2009 DOI:
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| 2007 |
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Enhanced Global Coverage of the Thermosphere and Ionosphere: Adding New UV data (DMSP/SSUSI) to the TIMED/GUVI Database
Wolven, BC; Hsieh, S; Schaefer, RK;
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YEAR: 2007 DOI:
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| 2006 |
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TIMED/GUVI and DMSP/SSUSI-Data Products for Space Weather
Hsieh, S; Paxton, L; Zhang, Y; DeMajistre, R; Wolven, B; Morrison, D; Schaefer, R;
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YEAR: 2006 DOI:
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Observing the Coupled Ionosphere-Thermosphere System: From Solar Maximum to Solar Minimum and Beyond
Paxton, L; Morrison, D; Zhang, Y; Kil, H; Wolven, B; Comberiate, J; Meng, C; Kozyra, J; Christensen, A;
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YEAR: 2006 DOI:
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Analyses of solar activity effects on the low-latitude ionosphere
Wolven, BC; Talaat, ER; Yee, J; DeMajistre, R; Paxton, LJ; Christensen, A; Sotirelis, T; Smith, DC; Bilitza, D; Azeem, I;
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YEAR: 2006 DOI:
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GUVI Observations of Thermosphere/Ionosphere Coupling
Paxton, L; Zhang, Y; Kil, H; Morrison, D; Wolven, B; Meng, C; Christensen, A;
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YEAR: 2006 DOI:
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GUVI observations of the airglow response to solar flares: Results from the CAWSES campaign period
Wolven, BC; Paxton, LJ; Morrison, D;
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YEAR: 2006 DOI:
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| 2005 |
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Undulations on the equatorward edge of the diffuse proton aurora: TIMED/GUVI observations
Undulations on the equatorward edge of the diffuse proton aurora have been identified by using TIMED/GUVI auroral images in the far ultraviolet wavelengths. While undulations have been previously reported on the duskside (Lui et al., 1982), GUVI observations show the undulation also occurs in the dayside, nightside, and morningside. The GUVI proton auroral images provide direct optical evidence that the undulations occur in the proton aurora. It is also the first detection of the undulation in the dayside indicating stron ...
Zhang, Y.; Paxton, L.; Morrison, D.; T. Y. Lui, A.; Kil, H.; Wolven, B.; Meng, C.-I.; Christensen, A.;
Published by: Journal of Geophysical Research Published on: 09/2005
YEAR: 2005 DOI: 10.1029/2004JA010668
auroral undulation; K-H instability; Magnetic storm; plasma convection
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GUVI Observations of Solar EUV and Geomagnetic Storm Control of the Ionosphere and Thermosphere
Paxton, LJ; Yee, J; Zhang, Y; Kil, H; DeMajistre, R; Morrison, D; Wolven, B; Meng, C;
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YEAR: 2005 DOI:
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Integrated Solar Irradiance from 1-45 nm (Qeuv) as Determined from the GUVI instrument on TIMED
Morrison, D; Wolven, B; Paxton, L;
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YEAR: 2005 DOI:
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AURORA: The Next Generation Space Weather Sensor for NPOESS
Paxton, L; Morrison, D; Santo, A; Ogorzalek, B; Goldsten, J; Boldt, J; Kil, H; Zhang, Y; DeMajistre, R; Wolven, B; , others;
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YEAR: 2005 DOI:
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Auroral Undulations During Magnetic Storms: TIMED/GUVI Observations
Zhang, Y; Paxton, LJ; Morrison, D; Lui, T; Kil, H; Wolven, B; Meng, CI;
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YEAR: 2005 DOI:
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Hurricane-generated gravity waves as a trigger of ionospheric plasma instabilities
Wolven, BC; Paxton, LJ;
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YEAR: 2005 DOI:
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O/N2 morphology during quiet and moderate auroral activity and its relation to TEC
Zhang, Y; Paxton, LJ; Morrison, D; Kil, H; Wolven, B;
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YEAR: 2005 DOI:
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Far-ultraviolet signature of polar cusp during southward IMF Bz observed by TIMED/Global Ultraviolet Imager and DMSP
The coincident TIMED/Global Ultraviolet Imager (TIMED/GUVI) optical and DMSP particle observations have revealed new features of the optical signature of the polar cusp under a southward interplanetary magnetic field (IMF). We have found that cusp auroras usually take the shape of a thin arc with a width around 100\textendash200 km. This provides the first far-ultraviolet evidence of the narrow cusp under a southward IMF [
Zhang, Y; Meng, C-I; Paxton, LJ; Morrison, D; Wolven, B; Kil, H; Newell, P; Wing, S; Christensen, AB;
Published by: Journal of Geophysical Research: Space Physics (1978\textendash2012) Published on:
YEAR: 2005 DOI: 10.1029/2004JA010707
cusp aurora
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Imaging the Low-Latitude Ionosphere: Future Collaborations with C/NOFS
Paxton, L.; Kil, H.; DeMajistre, R.; Zhang, Y.; Morrison, D.; Wolven, B.; Meng, C.-I;
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YEAR: 2005 DOI:
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Nightside detached auroras due to precipitating protons/ions during intense magnetic storms
Nightside detached auroras (NDA) during intense magnetic storms are studied by using FUV image data from Thermosphere-Ionosphere-Mesosphere Energetics and Dynamics (TIMED)/Global Ultraviolet Imager (GUVI), Imager for Magnetopause-to-Aurora Global Exploration (IMAGE)/FUV, and particle data from DMSP/SSJ/4 instruments. We found that NDA are caused by proton/ion precipitation only. Thin arc-shaped NDA are very likely due to soft (\<1 keV) proton/ion precipitation. Thick or patch-shaped NDA are caused by energetic (\~10 ke ...
Zhang, Y; Paxton, LJ; Morrison, D; Wolven, B; Kil, H; Wing, S;
Published by: Journal of Geophysical Research: Space Physics (1978\textendash2012) Published on:
YEAR: 2005 DOI: 10.1029/2004JA010498
detached aurora; proton precipitation; ring current; Magnetic storm
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TIMED/GUVI Observations of the Ionosphere and Thermosphere Interaction
Paxton, L.; Kil, H.; DeMajistre, R.; Zhang, Y.; Morrison, D.; Wolven, B.; Meng, C.-I.;
Published by: Ann. Geophys., special ISEA Published on:
YEAR: 2005 DOI:
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SSUSI and GUVI limb scans of thermospheric neutral density changes during a geomagnetic storm
Stephan, AW; Picone, JM; Meier, RR; Emmert, JT; Paxton, LJ; Morrison, D; Wolven, B; Kil, H;
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YEAR: 2005 DOI:
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Observations of solar and magnetospheric inputs and atmospheric responses to the January 2005 long duration flares and fast coronal mass ejections
Paxton, LJ; Kozyra, J; Demajistre, B; Kil, H; Morrison, D; Wolven, B; Mitchell, D; Brandt, P; Zhang, Y; Meng, C;
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YEAR: 2005 DOI:
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| 2004 |
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Coincident equatorial bubble detection by TIMED/GUVI and ROCSAT-1
Kil, Hyosub; Su, S.-Y.; Paxton, L.; Wolven, B.; Zhang, Y.; Morrison, D.; Yeh, H.;
Published by: Geophysical Research Letters Published on: Jan-01-2004
YEAR: 2004 DOI: 10.1029/2003GL018696
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O/N 2 changes during 1--4 October 2002 storms: IMAGE SI-13 and TIMED/GUVI observations
Thermospheric O/N2 column density ratios referenced at a N2 column density of 1017 cm-2 are obtained using the IMAGE SI-13 and TIMED/GUVI far-ultraviolet (FUV) dayglow data, AURIC simulation results, and MSIS86 model. Each of the magnetic storms occurring during a 4-day period (1\textendash4 October 2002) caused significant O/N2 depletion that was detected by both of the IMAGE SI-13 and GUVI instruments. The depletion extended down to latitudes of 10\textdegree and -5 ...
Zhang, Y.; Paxton, L.; Morrison, D.; Wolven, B.; Kil, H.; Meng, C.-I.; Mende, S.; Immel, T.;
Published by: Journal of Geophysical Research Published on: 10/2004
YEAR: 2004 DOI: 10.1029/2004JA010441
Magnetic storm; thermospheric composition change
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Double dayside detached auroras: TIMED/GUVI observations
On August 19, 2003, TIMED/GUVI detected, for the first time, two separated (double) dayside detached auroras (D-DDA) simultaneously in all the GUVI channels, 121.6 nm, 135.6 nm, LBHS, and LBHL. The D-DDA was located at magnetic latitudes around -57\textdegree and -63\textdegree (L shell 3.4 and 4.9) in the 0900\textendash1030 MLT region. The high-latitude part of the D-DDA is much brighter than the low-latitude part. DMSP particle observation indicates that the source of the D-DDA is energetic (\~10 keV) precipitating pro ...
Zhang, Y.; Paxton, L.; Meng, C.-I.; Morrison, D.; Wolven, B.; Kil, H.; Christensen, A.;
Published by: Geophysical Research Letters Published on: 05/2004
YEAR: 2004 DOI: 10.1029/2003GL018949
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GUVI/TIMED Observations of the auroral inputs and thermospheric response during the October and November 2003 Superstorms
Zhang, Y; Paxton, LJ; Kozyra, JU; DeMajistre, R; Kil, H; Morrison, D; Wolven, B; Brandt, PC; Mitchell, DG; Talaat, E;
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YEAR: 2004 DOI:
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Observations of the Ionospheric and Thermospheric Response During the October and November 2003 Storms
Paxton, L; Crowley, G; Zhang, Y; DeMajistre, R; Kil, H; Morrison, D; Wolven, B; Straus, P; Christensen, A;
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YEAR: 2004 DOI:
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Far Ultraviolet Imaging of the low-Latitude Nightside Ionosphere with the GUVI Instrument on TIMED
Paxton, LJ; Kil, H; DeMajistre, R; Morrison, D; Straus, P; Talaat, E; Christensen, A; Wolven, B; Zhang, Y; Crowley, G; , others;
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YEAR: 2004 DOI:
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TIMED GUVI and SEE Observations of Solar Irradiance Variations and the Terrestrial Airglow Response
Wolven, B; Paxton, L; Morrison, D; Woods, T;
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YEAR: 2004 DOI:
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The nighttime F-region climatology during magnetically quiet periods seen from TIMED/GUVI and DMSP
Kil, H; Paxton, L; Zhang, Y; Wolven, B; Morrison, D;
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YEAR: 2004 DOI:
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GUVI: a hyperspectral imager for geospace
The Global Ultraviolet Imager (GUVI) is an imaging spectrometer on the NASA TIMED spacecraft which was launched on December 7, 2001. This instrument produces a far ultraviolet (FUV) data cube of spatial and spectral information at each step of a scan mirror - that scan mirror covers 140 deg in the cross track direction - a span that includes on limb. GUVI produces simultaneous monochromatic images at five "colors" (121.6 nm, 130.4 nm, 135.6 nm, and in broader bands at 140-150 nm and 165-180 nm) as its field of view is sca ...
Paxton, L.; Christensen, Andrew; Morrison, Daniel; Wolven, Brian; Kil, Hyosub; Zhang, Yongliang; Ogorzalek, Bernard; Humm, David; Goldsten, John; DeMajistre, Robert; Meng, Ching-I.;
Published by: Published on:
YEAR: 2004 DOI: 10.1117/12.579171
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| 2003 |
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The use of far ultraviolet remote sensing to monitor space weather
This paper discusses the connection between changes in Earth\textquoterights thermosphere and ionosphere induced by changes in the Earth\textquoterights local space environment (or \textquotedblleftspace weather\textquotedblright) and the phenomena observed in far ultraviolet images of the Earth. Two new experiments, the Global Ultraviolet Imager (GUVI) and the Special Sensor Ultraviolet Imager (SSUSI), will provide a new capability for monitoring changes in thermospheric composition and ionospheric density as they change ...
Paxton, L.; 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
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F-Region Plasma Distribution seen from TIMED/GUVI and its Effect on the Equatorial Spread F Activity
Kil, H; DeMajistre, R; Paxton, L; Zhang, Y; Wolven, B; Morrison, D; Meng, C;
Published by: Published on:
YEAR: 2003 DOI:
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