| 2018 |
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Storm-time variations of atomic nitrogen 149.3 nm emission
Net radiances of atomic nitrogen emission line (N-149.3 nm) from the thermosphere are extracted from the FUV spectra observed by TIMED/GUVI on dayside at ...
Zhang, Y.; Paxton, L.J.; Morrison, D.; Schaefer, B.;
Published by: Journal of Atmospheric and Solar-Terrestrial Physics Published on: 04/2018
YEAR: 2018 DOI: 10.1016/j.jastp.2018.01.023
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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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| 2014 |
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Storm-time behaviors of O/N2 and NO variations
Algorithms have been developed to extract net nitric oxide (NO) radiances in the wavelength range of 172\textendash182\ nm from the dayside TIMED/GUVI spectrograph data and convert them to NO column density (100\textendash150\ km). The thermospheric O/N2 column density ratios (referenced from an altitude ~135\ km with a N2column density of 1017\ cm-2) are also obtained from the spectrograph data. The spatial resolution of the NO and O/N2 products a ...
Zhang, Y.; Paxton, L.J.; Morrison, D.; Marsh, D.; Kil, H.;
Published by: Journal of Atmospheric and Solar-Terrestrial Physics Published on: 07/2014
YEAR: 2014 DOI: 10.1016/j.jastp.2014.04.003
geomagnetic storm; Thermospheric nitric oxide; Thermospheric O/N2 ratio
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Storm-Time Behaviors of the Thermospheric O/N2 and NO Variations
Zhang, Yongliang; Paxton, Larry; Morrison, Daniel; Kil, Hyosub; Marsh, Daniel;
Published by: Published on:
YEAR: 2014 DOI:
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Improving Discoverability of Geophysical Data using Location Based Services
Morrison, Daniel; Barnes, Robin; Potter, Matthew; Nylund, Stuart; Patrone, Dennis; Weiss, Michele; Talaat, Elsayed; Sarris, Theodore; Smith, Daniel;
Published by: Published on:
YEAR: 2014 DOI:
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| 2013 |
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Empirical relationship between electron precipitation and far-ultraviolet auroral emissions from DMSP observations
Auroral emissions observed in the far-ultraviolet wavelength range are compared with measurements of the coincident precipitating electrons and ions that produce the emissions in a large-scale correlative study. The auroral emissions and particle precipitation are observed with the Special Sensor Ultraviolet Spectrographic Imager and SSJ5 detectors, respectively, both onboard the DMSP F16 satellite. Coincident observations along the same magnetic field line in the Northern Hemisphere are assembled from two consecutive win ...
Sotirelis, Thomas; Korth, Haje; Hsieh, Syau-Yun; Zhang, Yongliang; Morrison, Daniel; Paxton, Larry;
Published by: Journal of Geophysical Research: Space Physics Published on: 03/2013
YEAR: 2013 DOI: 10.1002/jgra.50157
DMSP; electron aurora; electron precipitation; FUV Aurora
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VITMO: A Case Study in Virtual Observatories as Data Portals and Development of Web Services as Search Tools
Smith, D; Barnes, RJ; Morrison, D; Talaat, ER; Potter, M; Patrone, D; Weiss, M; Sarris, T;
Published by: Published on:
YEAR: 2013 DOI:
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| 2011 |
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A Dataset Conjunction Locator Service for the Virtual ITM Observatory and Other VxOs
Morrison, D; Barnes, RJ; Potter, M; Talaat, ER; Weiss, M;
Published by: Published on:
YEAR: 2011 DOI:
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| 2010 |
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Auroral and thermospheric response to the 9 day periodic variations in the dayside reconnection rate in 2005
Zhang, Yongliang; Paxton, L.; Morrison, Daniel;
Published by: Space Weather Published on: Jan-01-2010
YEAR: 2010 DOI: 10.1029/2009SW000559
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Searching Across Multiple Datasets with the Virtual ITM Observatory
Morrison, D; Weiss, M; Immer, EA; Patrone, D; Potter, M; Barnes, RJ; Colclough, C; Holder, R; McGuire, RE; Candey, RM; , others;
Published by: Published on:
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;
Published by: Published on:
YEAR: 2009 DOI:
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SWIFTER-Space Weather Informatics, Forecasting, and Technology through Enabling Research and Virtual Organizations
Schaefer, RK; Morrison, D; Paxton, L; Holm, J; Weiss, M; Hsieh, S;
Published by: Published on:
YEAR: 2009 DOI:
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Use of the Virtual ITM Observatory for Scientific Research
Weiss, M; Morrison, D; Immer, E; Potter, M; Patrone, D; Colclough, C; Holder, R; Barnes, RJ;
Published by: Published on:
YEAR: 2009 DOI:
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Accessing Space Weather Information
Morrison, D; Weiss, M; Immer, EA; Patrone, D; Potter, M; Barnes, RJ; Colclough, C; Holder, R;
Published by: Published on:
YEAR: 2009 DOI:
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| 2008 |
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Evidence for significantly greater N2 Lyman-Birge-Hopfield emission efficiencies in proton versus electron aurora based on analysis of coincident DMSP SSUSI and SSJ/5 data
Knight, HK; Strickland, DJ; Hecht, JH; Straus, PR; Morrison, D; Paxton, LJ; Evans, DS;
Published by: Journal of Geophysical Research: Space Physics Published on:
YEAR: 2008 DOI:
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Performing Science Research with the Virtual ITM Observatory
Morrison, D; Weiss, M; Immer, L; Patrone, D; Potter, M; Holder, R; Barnes, R; Colclough, C; Nylund, S; Yee, J; , others;
Published by: Published on:
YEAR: 2008 DOI:
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Leveraging Capabilities in the Community: CDAWeb Data and Services within VITMO
Bilitza, D; Barnes, R; Candey, R; Harris, B; Holder, R; Immer, E; McGuire, R; Morrison, D; Patrone, D; Potter, M; , others;
Published by: Published on:
YEAR: 2008 DOI:
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Enabling Science Research with Coordinated Data From SuperDARN and VITMO
Barnes, RJ; Morrison, D; Weiss, M; Immer, E; Potter, M; Holder, R; Patrone, D; Colclough, C; McGuire, R; Candey, R; , others;
Published by: Published on:
YEAR: 2008 DOI:
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| 2007 |
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Constraining and validating the Oct/Nov 2003 X-class EUV flare enhancements with observations of FUV dayglow and E -region electron densities
Strickland, D.; Lean, J.; Daniell, R.; Knight, H.; Woo, W.; Meier, R.; Straus, P.; Woods, T.; Eparvier, F.; McMullin, D.; Christensen, A.; Morrison, D.; Paxton, L.;
Published by: Journal of Geophysical Research Published on: Jan-01-2007
YEAR: 2007 DOI: 10.1029/2006JA012074
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The Response of the Thermosphere and Ionosphere to Magnetospheric Inputs as Determined from LEO UV Remote Sensing Measurements-Model/Data Comparisons
Paxton, LJ; Zhang, Y; Ridley, A; Christensen, A; DeMajistre, R; Schaefer, R; Morrison, D;
Published by: Published on:
YEAR: 2007 DOI:
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VITMO: The Virtual Observatory for the ITM Community
Morrison, D; Weiss, M; Daley, R; Immer, L; Colclough, C; Holder, R; Jen, J; Patrone, D; Hashemian, M; Meckel, P; , others;
Published by: Published on:
YEAR: 2007 DOI:
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Enabling Science with the Virtual ITM Observatory
Morrison, D; Weiss, M; Immer, L; Holder, R; Barnes, R; Colclough, C; Potter, M; Daley, R; Hashemian, M; Nylund, S; , others;
Published by: Published on:
YEAR: 2007 DOI:
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Data Search in the Virtual ITM Observatory
Morrison, D; Weiss, M; Daley, R; Immer, L; Colclough, C; Holder, R; Jen, J; Hashemian, M; Meckel, P; Potter, M; , others;
Published by: Published on:
YEAR: 2007 DOI:
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| 2006 |
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Global thermosphere-ionosphere response to onset of 20 November 2003 magnetic storm
Crowley, G.; Hackert, C.; Meier, R.; Strickland, D.; Paxton, L.; Pi, X.; Mannucci, A.; Christensen, A.; Morrison, D.; Bust, G.; Roble, R.; Curtis, N.; Wene, G.;
Published by: Journal of Geophysical Research Published on: Jan-01-2006
YEAR: 2006 DOI: 10.1029/2005JA011518
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VITMO: A Virtual Observatory for the ITM Community
Morrison, D; Weiss, M; Daley, R; Immer, L; Nylund, S; Yee, J; Talaat, E; Russell, J; Heelis, R; Kozyra, J; , others;
Published by: Published on:
YEAR: 2006 DOI:
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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;
Published by: Published on:
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;
Published by: Published on:
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;
Published by: Published on:
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;
Published by: Published on:
YEAR: 2006 DOI:
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Development of single and multi-parameter global auroral models
Zhang, Y; Paxton, L; Morrison, D;
Published by: Published on:
YEAR: 2006 DOI:
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Developing cyber-infrastructure for addressing grand challenge questions in Sun-Earth system science: First results of a testbed worldwide online conference series
Kozyra, JU; Barnes, R; Fox, NJ; Fox, PA; Kuznetsova, MM; Morrison, D; Pallamraju, D; , Papitashvili; Ridley, A; Talaat, ER; , others;
Published by: Published on:
YEAR: 2006 DOI:
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| 2005 |
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First look at the 20 November 2003 superstorm with TIMED/GUVI: Comparisons with a thermospheric global circulation model
The NASA TIMED/GUVI experiment obtained unprecedented far ultraviolet images of thermospheric composition and temperature during the intense geomagnetic storm on 20\textendash21 November 2003. Geographic maps of the atomic oxygen to molecular nitrogen column density ratio show severe depletions that extend to the equator near the peak of the storm. This ratio is a key indicator of how the thermospheric composition is disrupted at high latitudes and how the perturbed air moves globally as a result of dynamical forcing. For ...
Meier, R.; Crowley, G.; Strickland, D.; Christensen, A.; Paxton, L.; Morrison, D.; Hackert, C.;
Published by: Journal of Geophysical Research Published on: 09/2005
YEAR: 2005 DOI: 10.1029/2004JA010990
dayglow; geomagnetic storm; GUVI; remote sensing; thermospheric composition; TIMED
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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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Thermosphere Ionosphere Mesosphere Energetics and Dynamics Mission: Significant Findings, Evolving Research, and Outstanding Science Questions
Curtis, N; Crowley, G; Meier, R; Strickland, DJ; Paxton, LJ; Christensen, A; Morrison, D;
Published by: Published on:
YEAR: 2005 DOI:
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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;
Published by: Published on:
YEAR: 2005 DOI:
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Near Simultaneous Observations of the Aurora From FUV, Particle and Photometric Instruments on DMSP-F16, TIMED, and IMAGE
Hecht, JH; Strickland, DJ; Knight, HK; Kochenash, AJ; Zhang, Y; Morrison, MD; Paxton, LJ; Mende, SB; Frey, HU; Burke, WJ; , others;
Published by: Published on:
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;
Published by: Published on:
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;
Published by: Published on:
YEAR: 2005 DOI:
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Violent Sun-Earth Connection Events of October-November 2003-A09S41-First look at the 20 November 2003 superstorm with TIMED/GUVI: Comparisons with a thertnospheric global
Meier, RR; Crowley, G; Strickland, DJ; Christensen, AB; Paxton, LJ; Morrison, D; Hackert, CL;
Published by: Journal of Geophysical Research-Part A-Space Physics Published on:
YEAR: 2005 DOI:
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Global Thermosphere-Ionosphere Response To Storms
Crowley, G; Hackert, C; Meier, R; Paxton, L; Strickland, DJ; Zhang, Y; Pi, X; Manucci, A; Christensen, A; Morrison, D;
Published by: Published on:
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;
Published by: Published on:
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;
Published by: Published on:
YEAR: 2005 DOI:
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Testing Auroral Far Ultraviolet (FUV) Remote Sensing Techniques Using Coincident FUV and Particle Data From the DMSP F16 Satellite
Knight, HK; Strickland, DJ; Kochenash, AJ; Hecht, JH; Morrison, D; Zhang, Y; Paxton, LJ; Burke, WJ; Rich, FJ;
Published by: Published on:
YEAR: 2005 DOI:
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Calibration/Validation of the SSUSI Instrument on DMSP F16: Overview \& Nightside Analysis
Straus, PR; Paxton, LJ; DeMajistre, R; Morrison, D;
Published by: Published on:
YEAR: 2005 DOI:
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E-Layer Variations During X-Class Flares Inferred from Far Ultraviolet Dayglow Observations
A study is reported that addresses dayglow and ionospheric response to X-class flares that occurred on Oct 28 and Nov 4 2003. Data of interest are 1) the dayglow observations by GUVI and solar EUV/X-ray observations by SEE (both on NASA\textquoterights TIMED satellite), 2) E-region measurements made by the EISCAT radar (on Oct 28) located at Troms\o, Norway, and 3) E-region/F-region IOX GPS occultation measurements (on Nov 4). The timing of the flares was fortunate in that TIMED was on the dayside portion of its orbit whe ...
Strickland, D.~J.; Daniell, R.~E.; Meier, R.~R.; Lean, J.~L.; Straus, P.~R.; Morrison, M.~D.; Paxton, L.;
Published by: AGU Fall Meeting Abstracts Published on:
YEAR: 2005 DOI:
2479 Solar radiation and cosmic ray effects; 7519 Flares; 7549 Ultraviolet emissions; 7974 Solar effects
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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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Global Thermosphere-Ionosphere Response to Geomagnetic Storms
Crowley, G.; Hackert, C.; Meier, R.; Strickland, D.; Paxton, L.; Pi, X.; Manucci, A.; Christensen, A.; Morrison, D.; Bust, G.; Roble, R.; Curtis, N.;
Published by: Published on:
YEAR: 2005 DOI:
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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;
Published by: Published on:
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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