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Journal Articles by R. H. Varney


S. Kaeppler, D. G. Markowski, A. M. Pepper, R. Troyer, A. N. Jaynes, R. H. Varney, and D. Hampton
Data-driven empirical conductance relations during auroral precipitation using incoherent scatter radar and all sky imagers
Journal of Geophysical Research: Space Physics, 2023
aurora conductance conductivity precipitation pfisr
DOI, BibTex
D. J. Madera, R. A. Marshall, S. Elschot, S. Kaeppler, P. Reyes, R. H. Varney, and A. B. Crew
Time-Dependent Inversion of Energetic Electron Precipitation Spectra From Ground-Based Incoherent Scatter Radar Measurements
Journal of Geophysical Research: Space Physics, 2023
pfisr d-region
URL, DOI, BibTex
N. H. Godbole, M. R. Lessard, D. R. Kenward, B. A. Fritz, R. H. Varney, R. G. Michell, and D. Hampton
Observations of ion upflow and 630.0 nm emission during pulsating aurora
Frontiers in Physics, 2022
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URL, PDF, DOI, BibTex
X. Meng, D. S. Ozturk, O. P. Verkhoglyadova, R. H. Varney, A. S. Reimer, J. L. Semeter, S. R. Kaeppler, and W. Zhan
Energy Deposition by Mesoscale High-Latitude Electric Fields Into the Thermosphere During the 26 October 2019 Geomagnetic Storm
Journal of Geophysical Research: Space Physics, 2022
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URL, DOI, BibTex
Q. Ma, W. Xu, E. R. Sanchez, R. A. Marshall, J. Bortnik, P. M. Reyes, R. H. Varney, S. R. Kaeppler, Y. Miyoshi, A. Matsuoka, Y. Kasahara, S. Matsuda, F. Tsuchiya, A. Kumamoto, S. Kasahara, S. Yokota, K. Keika, T. Hori, T. Mitani, S. Nakamura, Y. Kazama, S.-Y. Wang, C.-W. Jun, I. Shinohara, and S. W.-Y. Tam
Analysis of Electron Precipitation and Ionospheric Density Enhancements Due To Hiss Using Incoherent Scatter Radar and Arase Observations
Journal of Geophysical Research: Space Physics, 2022
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URL, DOI, BibTex
E. R. Sanchez, Q. Ma, W. Xu, R. A. Marshall, J. Bortnik, P. Reyes, R. Varney, and S. Kaeppler
A Test of Energetic Particle Precipitation Models Using Simultaneous Incoherent Scatter Radar and Van Allen Probes Observations
Journal of Geophysical Research: Space Physics, 2022
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URL, PDF, DOI, BibTex
Y. Wang, D. R. Themens, C. Wang, Y.-Z. Ma, A. Reimer, R. Varney, R. Gilies, Z.-Y. Xing, Q.-H. Zhang, and P. T. Jayachandran
Simultaneous Observations of a Polar Cap Sporadic-E Layer by Twin Incoherent Scatter Radars at Resolute
Journal of Geophysical Research: Space Physics, 2022
risrn risrc
URL, DOI, BibTex
L. J. Lamarche, R. H. Varney, and A. S. Reimer
Ion Heating in the Polar Cap Under Northwards IMF Bz
Journal of Geophysical Research: Space Physics, 2021
risrn
URL, DOI, BibTex
E. Aa, S.-R. Zhang, P. J. Erickson, A. J. Coster, L. P. Goncharenko, R. H. Varney, and R. Eastes
Salient Midlatitude Ionosphere-Thermosphere Disturbances Associated With SAPS During a Minor but Geo-Effective Storm at Deep Solar Minimum
Journal of Geophysical Research: Space Physics, 2021
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URL, DOI, BibTex
Y. Zou, L. Lyons, M. Conde, R. Varney, V. Angelopoulos, and S. Mende
Effects of Substorms on High-Latitude Upper Thermospheric Winds
Journal of Geophysical Research: Space Physics, 2021
pfisr pfrr
URL, DOI, BibTex
W. Zhan, S. R. Kaeppler, M. F. Larsen, A. Reimer, and R. Varney
An Investigation of Auroral E Region Energy Exchange Using Poker Flat Incoherent Scatter Radar Observations During Fall Equinox Conditions
Journal of Geophysical Research: Space Physics, 2021
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URL, DOI, BibTex
L. R. Lyons, J. Liu, Y. Nishimura, C.-P. Wang, A. S. Reimer, W. A. Bristow, D. L. Hampton, X. Shi, R. H. Varney, and E. F. Donovan
Radar Observations of Flows Leading to Longitudinal Expansion of Substorm Onset over Alaska
Journal of Geophysical Research: Space Physics, 2021
pfisr pfrr
URL, DOI, BibTex
L. J. Lamarche, R. H. Varney, and C. L. Siefring
Analysis of Plasma Irregularities on a Range of Scintillation-Scales Using the Resolute Bay Incoherent Scatter Radars
Journal of Geophysical Research: Space Physics, 2020
risrn rbo
URL, DOI, BibTex
J. Ren, S. Zou, J. Lu, N. Giertych, Y. Chen, R. H. Varney, and A. S. Reimer
Statistical Study of Ion Upflow and Downflow Observed by PFISR
Journal of Geophysical Research: Space Physics, 2020
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URL, DOI, BibTex
B. Wang, Y. Nishimura, M. Hartinger, N. Sivadas, L. L. Lyons, R. H. Varney, and V. Angelopoulos
Ionospheric Modulation by Storm Time Pc5 ULF Pulsations and the Structure Detected by PFISR-THEMIS Conjunction
Geophysical Research Letters, 2020
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URL, DOI, BibTex
M. Fraunberger, K. A. Lynch, R. Clayton, T. M. Roberts, D. Hysell, M. Lessard, A. Reimer, and R. Varney
Auroral ionospheric plasma flow extraction using subsonic retarding potential analyzers
Review of Scientific Instruments, 2020
pfisr pfrr
URL, DOI, BibTex
Y. Nishimura, L. R. Lyons, C. Gabrielse, N. Sivadas, E. F. Donovan, R. H. Varney, V. Angelopoulos, J. M. Weygand, M. G. Conde, and S. R. Zhang
Extreme Magnetosphere-Ionosphere-Thermosphere Responses to the 5 April 2010 Supersubstorm
Journal of Geophysical Research: Space Physics, 2020
pfisr pfrr
URL, DOI, BibTex
L. J. Lamarche, R. H. Varney, and C. L. Siefring
Analysis of Plasma Irregularities on a Range of Scintillation-Scales Using the Resolute Bay Incoherent Scatter Radars
Journal of Geophysical Research: Space Physics, 2020
risrn risrc rbo
URL, DOI, BibTex
D. S. Ozturk, X. Meng, O. P. Verkhoglyadova, R. H. Varney, A. S. Reimer, and J. L. Semeter
A New Framework to Incorporate High-Latitude Input for Mesoscale Electrodynamics
Journal of Geophysical Research: Space Physics, 2020
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URL, DOI, BibTex
R. Clayton, K. Lynch, M. Zettergren, M. Burleigh, M. Conde, G. Grubbs, D. Hampton, D. Hysell, M. Lessard, R. Michell, A. Reimer, T. M. Roberts, M. Samara, and R. Varney
Two-Dimensional Maps of In Situ Ionospheric Plasma Flow Data Near Auroral Arcs Using Auroral Imagery
Journal of Geophysical Research: Space Physics, 2019
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URL, DOI, BibTex
Q. Wu, D. Knipp, J. Liu, W. Wang, R. Varney, R. Gillies, P. Erickson, M. Greffen, A. Reimer, I. Häggström, G. Jee, and Y.-S. Kwak
HIWIND Observation of Summer Season Polar Cap Thermospheric Winds
Journal of Geophysical Research: Space Physics, 2019
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URL, DOI, BibTex
D. R. Themens, P. Jayachandran, A. M. McCaffrey, B. Reid, and R. H. Varney
A Bottomside Parameterization for the Empirical Canadian High Arctic Ionospheric Model
Radio Science, 2019
pfisr risrn
URL, DOI, BibTex
R. G. Gillies, G. W. Perry, A. V. Koustov, R. H. Varney, A. S. Reimer, E. Spanswick, J.-P. St.-Maurice, and E. Donovan
Large-scale comparison of polar cap ionospheric velocities measured by RISR-C, RISR-N, and SuperDARN
Journal of Geophysical Research: Radio Science, 2018
risrn risrc
DOI, BibTex
J. Ren, S. Zou, R. G. Gillies, E. Donovan, and R. H. Varney
Statistical characteristics of polar cap patches observed by RISR‐C
Journal of Geophysical Research: Space Physics, 2018
risrc
DOI, BibTex
Y. Zou, Y. Nishimura, L. Lyons, M. Conde, R. Varney, V. Angelopoulos, and S. Mende
Mesoscale F region neutral winds associated with quasi‐steady and transient nightside auroral forms
Journal of Geophysical Research: Space Physics, 2018
pfisr pfrr
DOI, BibTex
C. C. Triplett, J. Li, R. L. Collins, G. A. Lehmacher, A. Barjatya, D. C. Fritts, B. Strelnikov, F.-J. Luebken, B. Thurairajah, V. L. Harvey, D. L. Hampton, and R. H. Varney
Observations of Reduced Turbulence and Wave Activity in the Arctic Middle Atmosphere Following the January 2015 Sudden Stratospheric Warming
Journal of Geophysical Research: Atmospheres, 2018
pfisr pfrr
PDF, DOI, BibTex
J. Liang, E. Donovan, A. Reimer, D. Hampton, S. Zou, and R. Varney
Ionospheric electron heating associated with pulsating auroras: Joint optical and PFISR observations
Journal of Geophysical Research: Space Physics, 2018
pfisr pfrr
URL, DOI, BibTex
D. R. Themens, P. Jayachandran, and R. H. Varney
Examining the use of the NeQuick bottomside and topside parameterizations at high latitudes
Advances in Space Research, 2018
pfisr risrn
URL, DOI, BibTex
D. R. Themens, P. T. Jayachandran, D. Bilitza, P. J. Erickson, I. Haggstrom, M. V. Lyashenko, B. Reid, R. H. Varney, and L. Pustovalova
Topside electron density representations for middle and high latitudes: A topside parameterization for E-CHAIM based on the NeQuick
Journal of Geophysical Research: Space Physics, 2018
pfisr risrn
DOI, BibTex
S. Mrak, J. Semeter, M. Hirsch, G. Starr, D. Hampton, R. H. Varney, A. S. Reimer, J. Swoboda, P. J. Erickson, F. Lind, A. J. Coster, and V. Pankratius
Field-aligned GPS scintillation: Multisensor data fusion
Journal of Geophysical Research: Space Physics, 2018
pfrr pfisr
DOI, BibTex
S. Zou, D. Ozturk, R. Varney, and A. Reimer
Effects of sudden commencement on the ionosphere: PFISR observations and global MHD simulation
Geophys. Res. Lett., 2017
pfisr pfrr
URL, DOI, BibTex
Q. Wu, G. Jee, C. Lee, J.-H. Kim, Y. H. Kim, W. Ward, and R. H. Varney
First simultaneous multistation observations of the polar cap thermospheric winds
J. Geophys. Res. Space Physics, 2017
risrn rbo
URL, DOI, BibTex
Y. Shen, D. J. Knudsen, J. K. Burchill, A. Howarth, A. Yau, R. J. Redmon, D. M. Miles, R. H. Varney, and M. J. Nicolls
Strong ambipolar-driven ion upflow within the cleft ion fountain during low geomagnetic activity
J. Geophys. Res. Space Physics, 2016
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URL, DOI, BibTex
A. V. Koustov, D. B. Lavoie, and R. H. Varney
On the consistency of the SuperDARN radar velocity and E×B plasma drift
Radio Science, 2016
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URL, DOI, BibTex
D. A. Hickey, C. R. Martinis, F. S. Rodrigues, R. H. Varney, M. A. Milla, M. J. Nicolls, A. Strømme, and J. F. Arratia
Concurrent observations at the magnetic equator of small-scale irregularities and large-scale depletions associated with equatorial spread F
J. Geophys. Res., 2015
amisr jro-14
PDF, DOI, BibTex
F. S. Rodrigues., M. J. Nicolls, M. A. Milla, J. M. Smith, R. H. Varney, A. Strømme, C. Martinis, and J. F. Arratia
AMISR-14: Observations of equatorial spread F
Geophys. Res. Lett., 2015
amisr jro-14
PDF, DOI, BibTex
R. H. Varney, S. C. Solomon, and M. J. Nicolls
Heating of the sunlit polar cap ionosphere by reflected photoelectrons
J. Geophys. Res., 2014
amisr risrn
PDF, DOI, BibTex
R. H. Varney, M. C. Kelley, M. J. Nicolls, C. J. Heinselman, and R. L. Collins
The electron density dependence of polar mesospheric summer echoes
J Atmos Sol-Terr Phy, 2011
amisr pfisr
PDF, DOI, BibTex
M. C. Kelley, M. J. Nicolls, R. H. Varney, R. L. Collins, R. Doe, J. M. C. Plane, J. Thayer, M. Taylor, B. Thurairajah, and K. Mizutani
Radar, lidar, and optical observations in the polar summer mesosphere shortly after a space shuttle launch
J. Geophys. Res., 2010
amisr pfisr pfrr sondrestrom
PDF, DOI, BibTex
M. J. Nicolls, R. H. Varney, S. L. Vadas, P. A. Stamus, C. J. Heinselman, R. B. Cosgrove, and M. C. Kelley
Influence of an inertia-gravity wave on mesospheric dynamics: A case study with the Poker Flat Incoherent Scatter Radar
J. Geophys. Res., 2010
amisr pfisr
PDF, DOI, BibTex
R. H. Varney, M. J. Nicolls, C. J. Heinselman, and M. C. Kelley
Observations of polar mesospheric summer echoes using PFISR during the summer of 2007
J. Atmos. Solar-Terr. Phys., 2009
amisr pfisr
PDF, DOI, BibTex
M. J. Taylor, Y. Zhao, P.-D. Pautet, M. J. Nicolls, R. L. Collins, J. Barker-Tvedtnes, C. D. Burton, B. Thurairajah, J. Reimuller, R. H. Varney, C. J. Heinselman, and K. Mizutani
Coordinated optical and radar image measurements of noctilucent clouds and polar mesospheric summer echoes
J. Atmos. Solar-Terr. Phys., 2009
amisr pfisr pfrr
PDF, DOI, BibTex
M. J. Nicolls, M. C. Kelley, R. H. Varney, and C. J. Heinselman
Spectral observations of polar mesospheric summer echoes at 33 cm (450 MHz) with the Poker Flat Incoherent Scatter Radar
J. Atmos Solar-Terr. Phys., 2009
amisr pfisr
PDF, DOI, BibTex

Book Chapters


S. R. Kaeppler, E. Sanchez, R. H. Varney, R. J. Irvin, R. A. Marshall, J. Bortnik, A. S. Reimer, and P. M. Reyes
Chapter 6 - Incoherent scatter radar observations of 10–100keV precipitation: review and outlook
The Dynamic Loss of Earth's Radiation Belts, Elsevier, 2020
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URL, DOI, BibTex