Bibliography

Configuration of the local interstellar magnetic field

Frisch, Priscilla; Andersson, B; Berdhyugin, A; Funsten, HO; DeMajistre, R; Magalhaes, A; McComas, D; , Piirola; Schwadron, N; Seriacopi, D; , others;

Published by:       Published on:

YEAR: 2014     DOI:

The MSX/UVISI Stellar Occultation Experiments: Proof-of-Concept Demonstration of a New Approach to Remote Sensing of Earth’s Atmosphere

Vervack, Ronald; Yee, Jeng-Hwa; Swartz, William; DeMajistre, Robert; Paxton, Larry;

Published by: JOHNS HOPKINS APL TECHNICAL DIGEST      Published on:

YEAR: 2014     DOI:

High sensitivity trace gas sensor for planetary atmospheres: miniaturized Mars methane monitor

Englert, Christoph; Stevens, Michael; Brown, Charles; Harlander, John; DeMajistre, Robert; Marr, Kenneth;

Published by: Journal of Applied Remote Sensing      Published on:

YEAR: 2014     DOI:

The quiet nighttime low-latitude ionosphere as observed by TIMED/GUVI

In this paper, we examine the nighttime ionosphere climatology structure in the low latitude region and discrepancies between Global Ultraviolet Imager (GUVI) observations and the IRI model predictions using (1) the magnetic zonal mean of electron number density as a function of altitude and magnetic latitude, (2) vertical electron density profiles at various levels of F10.7 index, (3) nighttime descent and magnitude decrease of the ionosphere, (4) point-to-point comparisons of F-peak height (hmF2) and density (NmF2), and (5) the magnetic longitudinal variations of hmF2 and NmF2. The data collected from the Thermosphere, Ionosphere, Mesosphere, Energetics, and Dynamics (TIMED) mission since its launch in December 2001 have provided great opportunities for many scientific investigations of the ionosphere. In this analysis, we investigate the climatology of the nighttime low-latitude ionosphere under low geomagnetic activity (kp\ ⩽\ 4) using the electron density profiles inferred from the airglow measurements obtained by the GUVI aboard the TIMED spacecraft and compared with the results obtained from IRI (International Reference Ionosphere) model-2001. The observed climatology is an essential tool for further understanding the electrodynamics in the low-latitude region and improving the model\textquoterights prediction capability. The time range of the GUVI data used in this study is from 2002 (day 053) to 2006 (day 304), and the IRI model predictions were produced at every GUVI location. The ionosphere observed is generally of greater density than what IRI predicts throughout the night for all four seasons for low and moderate solar activity while the model over-predicts the electron density near the F-region peak at high solar activity before midnight. Observations show that the height of the F-region peak has a steep descent from dusk to midnight and near midnight the height of layer is insensitive to solar conditions, significantly different than what is predicted by IRI. Longitudinal features shown in GUVI data are present in the low-latitude ionosphere after sunset and continue through to midnight after which the low-latitude ionosphere is largely zonally symmetric.

Talaat, E.R.; Yee, J.-H.; Hsieh, S.-Y.; Paxton, L.J.; DeMajistre, R.; Christensen, A.B.; Bilitza, D.;

Published by: Advances in Space Research      Published on: 02/2013

YEAR: 2013     DOI: 10.1016/j.asr.2012.11.012

Electron density; GUVI; Ionosphere; IRI; TIMED

Visualizing the fully three-dimensional plasmaspheric and ring current distribution from global EUV and ENA imaging

Zimmerman, MI; Hsieh, SW; Brandt, PC; Vandegriff, JD; Stephens, GK; Toigo, AD; Keika, K; Kusterer, MB; DeMajistre, R;

Published by:       Published on:

YEAR: 2013     DOI:

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;

Published by:       Published on:

YEAR: 2012     DOI:

Variations in the heliospheric polar energetic neutral atom flux observed by the Interstellar Boundary Explorer

Reisenfeld, DB; Allegrini, F; Bzowski, M; Crew, GB; DeMajistre, R; Frisch, P; Funsten, HO; Fuselier, SA; Janzen, PH; Kubiak, MA; , others;

Published by: The Astrophysical Journal      Published on:

YEAR: 2012     DOI:

The O2 (b1$\Sigma$) dayglow emissions: Application to middle and upper atmosphere remote sensing

Yee, Jeng-Hwa; DeMajistre, R; Morgan, F;

Published by: Canadian Journal of Physics      Published on:

YEAR: 2012     DOI:

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;

Published by:       Published on:

YEAR: 2012     DOI:

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;

Published by:       Published on:

YEAR: 2012     DOI:

Estimating Dayside Regions of Dayglow-Free 135.6 nm UV Radiances for Data Assimilation

Aiello, John; Toigo, Anthony; DeMajistre, Robert; Schaefer, Robert; Paxton, Larry;

Published by:       Published on:

YEAR: 2011     DOI:

Separation of the Interstellar Boundary Explorer ribbon from globally distributed energetic neutral atom flux

Schwadron, Nathan; Allegrini, F; Bzowski, Maciej; Christian, ER; Crew, GB; Dayeh, M; DeMajistre, R; Frisch, P; Funsten, HO; Fuselier, SA; , others;

Published by: The Astrophysical Journal      Published on:

YEAR: 2011     DOI:

Mutual Neutralization of Atomic Oxygen Ions Over the Course of the Solar Cycle and Its Effects on Ionospheric Remote Sensing

Comberiate, J; DeMajistre, R; Schaefer, RK; Zhang, Y; Paxton, LJ;

Published by:       Published on:

YEAR: 2011     DOI:

Modeling of multiple effects of atmospheric tides on the ionosphere: An examination of possible coupling mechanisms responsible for the longitudinal structure of the equatorial ionosphere

England, S.; Immel, T.; Huba, J.; Hagan, M.; Maute, A.; DeMajistre, R.;

Published by: Journal of Geophysical Research      Published on: Jan-01-2010

YEAR: 2010     DOI: 10.1029/2009JA014894

Evolving outer heliosphere: Large-scale stability and time variations observed by the Interstellar Boundary Explorer

McComas, DJ; Bzowski, M; Frisch, P; Crew, GB; Dayeh, MA; DeMajistre, R; Funsten, HO; Fuselier, SA; Gruntman, M; Janzen, P; , others;

Published by: Journal of Geophysical Research: Space Physics      Published on:

YEAR: 2010     DOI:

Online 3-D Visualization of ENA Inversions with Simultaneous In-situ Measurements

Kusterer, M; Brandt, PC; DeMajistre, R; Hsieh, SW; Vandegriff, JD;

Published by:       Published on:

YEAR: 2010     DOI:

The effect of non-migrating tides on the morphology of the equatorial ionospheric anomaly: seasonal variability

England, Scott; Zhang, Xiaoli; Immel, Thomas; Forbes, Jeffrey; DeMajistre, Robert;

Published by: Earth Planets Space      Published on:

YEAR: 2009     DOI:

Upward propagating tidal effects across the E-and F-regions of the ionosphere

Immel, Thomas; England, Scott; Zhang, Xiaoli; Forbes, Jeffrey; DeMajistre, Robert;

Published by: Earth, planets and space      Published on:

YEAR: 2009     DOI:

Lower Atmosphere Wave Effects on Ionospheric Variability

Talaat, Elsayed; Yee, Jeng-Hwa; Paxton, Larry; DeMajistre, Robert; Christensen, Andrew; Mlynczak, MG; , Russell; Zhu, Xun; Sotirelis, Thomas; Kil, Hyosub;

Published by: 37th COSPAR Scientific Assembly      Published on:

YEAR: 2008     DOI:

Comparison of ionospheric measurements made by digisondes with those inferred from ultraviolet airglow

DeMajistre, R.; Paxton, L.; Bilitza, D.;

Published by: Advances in Space Research      Published on: Jan-01-2007

YEAR: 2007     DOI: 10.1016/j.asr.2006.09.037

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:

Monitoring the Dayside Equatorial Anomalies With 135.6 nm Limb Emission

Schaefer, RK; DeMajistre, R; Paxton, L;

Published by:       Published on:

YEAR: 2007     DOI:

Inter-annual and long-term variations observed in the ITM system

Talaat, ER; Yee, J; Ruohoniemi, JM; Zhu, X; DeMajistre, R; Russell, J; Mlynczak, M; Paxton, L; Christensen, A;

Published by:       Published on:

YEAR: 2007     DOI:

The low-latitude ionosphere as observed by TIMED/GUVI and TOPEX/Jason and comparisons with the IRI model

Hsieh, SW; Talaat, ER; Bilitza, D; DeMajistre, R; Paxton, L; Christensen, A; Yee, J;

Published by:       Published on:

YEAR: 2007     DOI:

F-region Pedersen conductivity deduced using the TIMED/GUVI limb retrievals

Kil, H.; DeMajistre, M.; Paxton, L.; Zhang, Y.;

Published by: Annales Geophysicae      Published on: Jan-01-2006

YEAR: 2006     DOI: 10.5194/angeo-24-1311-2006

Nighttime F-region morphology in the low and middle latitudes seen from DMSP F15 and TIMED/GUVI

We investigate the seasonal, longitudinal, and altitudinal variations of the FF-region morphology at 2100\textendash2300\ LT in the low- and middle-latitudes using the data collected in August, September, and November of 2003. The topside morphology is investigated using in situ measurements of the O⁺O+ fraction and total ion density by the Defense Meteorological Satellite Program (DMSP) F15 satellite. The morphology of the equatorial ionization anomaly (EIA) near the FF peak altitude is investigated using the OI 135.6-nm radiance maps provided by the Global Ultraviolet Imager (GUVI) on board the Thermosphere Ionosphere Mesosphere Energetics and Dynamics (TIMED) satellite. The hemispheric asymmetries of the topside ionosphere at 840\ km in the months near solstices can be characterized by the reduction of the O⁺O+ fraction and ion density in the winter hemisphere compared to those in the summer hemisphere. The minimum O⁺O+ fraction and ion density layers occur around 30^o30o magnetic latitude in the winter hemisphere. During the fall equinox, the hemispheric asymmetries are reversed in the regions of opposite magnetic declinations. From the comparison of the topside morphology with the global wind circulation pattern at 2200\ LT predicted by the Horizontal Wind Model 93 (HWM93) we infer that hemispheric asymmetry of the topside ionosphere is created primarily by the retardation of the downward plasma diffusion in one hemisphere through the field-aligned equatorward winds. The global EIA morphology does not conform to the topside morphology. The complex seasonal-longitudinal variations of the EIA strength and asymmetry are not explained simply by considering the modulation of the FF-layer height by the winds. The magnetic declination is not a useful tool in understanding the global EIA morphology.

Kil, Hyosub; DeMajistre, Robert; Paxton, L.; Zhang, Yongliang;

Published by: Journal of Atmospheric and Solar-Terrestrial Physics      Published on: 09/2006

YEAR: 2006     DOI: 10.1016/j.jastp.2006.05.024

Equatorial ionization anomaly; FF-region plasma distribution; low-latitude ionosphere; Neutral wind

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:

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;

Published by:       Published on:

YEAR: 2006     DOI:

The effects of solar activity on the low-latitude ionosphere as observed from space

Talaat, ER; Yee, J-H; DeMajistre, R; Paxton, LJ; Christensen, A; Sotirelis, T; Smith, DC; Bilitza, D;

Published by:       Published on:

YEAR: 2006     DOI:

F-region Pedersen conductivity deduced using the TIMED/GUVI limb retrievals

Kil, H; DeMajistre, M; Paxton, LJ; Zhang, Y;

Published by:       Published on:

YEAR: 2006     DOI:

Theoretical Model of Electron Density Distribution at Low Latitudes: Validation With GUVI Data

Basu, B; Retterer, J; DeMajistre, R; de La Beaujardiere, O;

Published by:       Published on:

YEAR: 2006     DOI:

Lower Atmosphere Effects on Thermospheric and Ionospheric Variability

Talaat, ER; Yee, J; Paxton, L; DeMajistre, R; Christensen, A; Russell, J; Mlynczak, M; Zhu, X; Sotirelis, T; Smith, D;

Published by:       Published on:

YEAR: 2006     DOI:

Storm-time enhancement of mid-latitude ultraviolet emissions due to energetic neutral atom precipitation

DeMajistre, R.; Brandt, P.; Immel, T.; Yee, J.-H.; Dalgarno, A.; Paxton, L.; Kharchenko, V.;

Published by: Geophysical Research Letters      Published on: Jan-01-2005

YEAR: 2005     DOI: 10.1029/2005GL023059

The climatology of the quiet nighttime low-latitude ionosphere

Talaat, ER; Yee, J; DeMajistre, R; Paxton, L; Kil, H; Zhang, Y; Sotirelis, T; Christensen, A; Palo, S; Azeem, I; , others;

Published by:       Published on:

YEAR: 2005     DOI:

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:

Comparisons of Electron Density Profiles Derived From TIMED/GUVI Data With Ionosonde Measurements.

DeMajistre, R; Paxton, LJ; Bilitza, D;

Published by:       Published on:

YEAR: 2005     DOI:

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:

Parametric analysis of nightside conductance effects on inner magnetospheric dynamics for the 17 April 2002 storm

Liemohn, Michael; Ridley, Aaron; Brandt, Pontus; Gallagher, Dennis; Kozyra, Janet; Ober, Daniel; Mitchell, Donald; Roelof, Edmond; DeMajistre, Robert;

Published by: Journal of Geophysical Research: Space Physics      Published on:

YEAR: 2005     DOI:

On the relation between sub-auroral electric fields, the ring current and the plasmasphere

Brandt, PC; Goldstein, J; Anderson, PC; Anderson, BJ; DeMajistre, R; Roelof, EC;

Published by: Geophysical monograph      Published on:

YEAR: 2005     DOI:

Scintillation Forecasting Using NPOESS Data

Basu, B; Retterer, J; DeMajistre, R; de La Beaujardiere, O; Scro, K;

Published by:       Published on:

YEAR: 2005     DOI:

Inverse methods applied to space based remote sensing data: Methods and case studies

DeMajistre, Robert;

Published by:       Published on:

YEAR: 2005     DOI:

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:

GUVI Observations of storm-time control and coupling of the ionosphere and thermosphere

Paxton, L.; Kil, H.; DeMajistre, R.; Zhang, Y.;

Published by: special ISEA issue      Published on:

YEAR: 2005     DOI:

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:

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:

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;

Published by:       Published on:

YEAR: 2005     DOI:

Retrievals of nighttime electron density from Thermosphere Ionosphere Mesosphere Energetics and Dynamics (TIMED) mission Global Ultraviolet Imager (GUVI) measurements

In this work we will present a method for retrieving nighttime electron density profiles from OI 135.6 nm limb emissions measured by the Global Ultraviolet Imager (GUVI) aboard the Thermosphere Ionosphere Mesosphere Energetics and Dynamics (TIMED) mission spacecraft. The primary mechanism for 135.6 nm radiance in the nighttime thermosphere is recombination of O⁺ ions, and the volume emission rate is approximately proportional to the square of the electron density. Herein we describe a two-step inversion method in which we first determine the volume emission rate as a function of altitude from the radiance measurements and then use the inferred volume emission rates to determine the electron density profile. There are two important factors that we have addressed in constructing the retrieval algorithms for this problem. First, the GUVI instrument was primarily designed for day side measurements. Consequently, the signal levels on the night side are very low, and our retrieval algorithms must therefore be able to function in regions where the signals are weak. Second, since we must take the square root of the volume emission rate, it must be everywhere positive in order for the electron density to be deduced. For this reason, we have imposed nonnegativity constraints (using the methods described by Menke [1989]) on what might otherwise be discrete linear retrievals of volume emission rate. After describing the retrieval method we present an error analysis and a preliminary comparison with coincident measurements by incoherent scatter radars (ISRs). In general, the retrieved electron densities from the GUVI data agree well with the ISR data, although more coincident measurements would increase our confidence in the resulting electron density profiles.

DeMajistre, R.; Paxton, L.; Morrison, D.; Yee, J.-H.; Goncharenko, L.; Christensen, A.;

Published by: Journal of Geophysical Research      Published on: 04/2004

YEAR: 2004     DOI: 10.1029/2003JA010296

Electron density; inversion; low-latitude ionosphere; TIMED/GUVI

F -region plasma distribution seen from TIMED/GUVI and its relation to the equatorial spread F activity

The OI 135.6-nm nightglow images from GUVI on board the TIMED satellite provide a unique opportunity to investigate the global plasma distribution in the F region. We report that there exist large seasonal-longitudinal variations in the F-region plasma density which may explain some aspects of the equatorial spread F (ESF) morphology. We suggest that an occurrence of high plasma density is responsible for the strong ESF activity during equinox periods at most longitudes, whereas an occurrence of low plasma density is responsible for the suppressed ESF activity during northern summer in the American-Atlantic sector.

Kil, Hyosub; DeMajistre, Robert; Paxton, L.;

Published by: Geophysical Research Letters      Published on: 03/2004

YEAR: 2004     DOI: 10.1029/2003GL018703

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;

Published by:       Published on:

YEAR: 2004     DOI:

A climatology of the nighttime ionosphere acquired by the TIMED/GUVI instrument and the changes associated with storm time

DeMajistre, R; Kil, H; Paxton, LJ;

Published by:       Published on:

YEAR: 2004     DOI: