2026 R. A. Greenwald: Earth Science Researcher – H-Index, Publications & Awards

Discipline name	D-Index	World Ranking	Current World Ranking	National Ranking	Current National Ranking	Publications	Citations
Earth Science	62	1659	1485	730	636	245	15051

Research.com Recognitions

2002 - Fellow of American Geophysical Union (AGU)

Overview

R. A. Greenwald is affiliated with the Johns Hopkins University Applied Physics Laboratory in the United States. The research work spans several areas including medical imaging, ionospheric science, aerospace engineering, and geophysics, as reflected in the subfields connected to their publications.

Their recent publications include the following papers:

History of the Super Dual Auroral Radar Network (SuperDARN)-I: pre-SuperDARN developments in high frequency radar technology for ionospheric research and selected scientific results, 2021, History of geo- and space sciences
vtsuperdarn/davitpy: Final release of davitpy, 2020, Zenodo (CERN European Organization for Nuclear Research)
Wallops SuperDARN data in CFIT format (2005-2020), 2021, Zenodo (CERN European Organization for Nuclear Research)

The research topics connected to their work include:

Medical Imaging Techniques and Applications
Ionosphere and magnetosphere dynamics
GNSS positioning and interference
Earthquake Detection and Analysis

Key subfields of study documented are:

Radiology, Nuclear Medicine and Imaging
Astronomy and Astrophysics
Aerospace Engineering
Geophysics

Frequent co-authors who have contributed alongside Greenwald include:

Alex T. Chartier
Jordan R. Wiker
R. J. Barnes
E. S. Miller
E. R. Talaat

Publication venues frequently associated with their work are:

Zenodo (CERN European Organization for Nuclear Research)
History of geo- and space sciences

In 2002, Greenwald was recognized as a Fellow of the American Geophysical Union (AGU).

Best Publications

DARN/SUPERDARN : A global view of the dynamics of high-latitude convection

R. A. Greenwald;K. B. Baker;J. R. Dudeney;M. Pinnock

1660
Citations
A decade of the Super Dual Auroral Radar Network (SuperDARN): scientific achievements, new techniques and future directions

G. Chisham;M. Lester;Steve E. Milan;M.P. Freeman

846
Citations
Magnetospheric substorms-definition and signatures

G. Rostoker;S.-I. Akasofu;J. Foster;R.A. Greenwald

513
Citations
Statistical patterns of high‐latitude convection obtained from Goose Bay HF radar observations

J. M. Ruohoniemi;R. A. Greenwald

477
Citations
STARE: A new radar auroral backscatter experiment in northern Scandinavia

R. A. Greenwald;W. Weiss;E. Nielsen;N. R. Thomson

473
Citations
Field line resonances associated with MHD waveguides in the magnetosphere

J. C. Samson;B. G. Harrold;J. M. Ruohoniemi;R. A. Greenwald

414
Citations
An HF phased‐array radar for studying small‐scale structure in the high‐latitude ionosphere

R. A. Greenwald;K. B. Baker;R. A. Hutchins;C. Hanuise

400
Citations
Multiradar observations of the polar tongue of ionization

J. C. Foster;A. J. Coster;P. J. Erickson;J. M. Holt

335
Citations
Stare auroral radar observations of Pc 5 geomagnetic pulsations

Unknown

315
Citations
Dependencies of high-latitude plasma convection: Consideration of interplanetary magnetic field, seasonal, and universal time factors in statistical patterns

J. M. Ruohoniemi;R. A. Greenwald

310
Citations
Spatial and temporal behavior of ULF pulsations observed by the Goose Bay HF radar

A. D. M. Walker;J. M. Ruohoniemi;K. B. Baker;R. A. Greenwald

276
Citations
Substorm intensifications and field line resonances in the nightside magnetosphere

J. C. Samson;D. D. Wallis;T. J. Hughes;F. Creutzberg

265
Citations
HF radar signatures of the cusp and low-latitude boundary layer

K. B. Baker;J. R. Dudeney;R. A. Greenwald;M. Pinnock

257
Citations
A new mechanism for polar patch formation

Alan Rodger;Michael Pinnock;J. R. Dudeney;K. B. Baker

251
Citations
Variations in the polar cap area during two substorm cycles

Steve E. Milan;M. Lester;S. W. H. Cowley;K. Oksavik

237
Citations
Review of the accomplishments of mid-latitude Super Dual Auroral Radar Network (SuperDARN) HF radars

Nozomu Nishitani;John Michael Ruohoniemi;Mark Lester;Joseph Benjamin Harold Baker

225
Citations
Global energy deposition during the January 1997 magnetic cloud event

G. Lu;D. N. Baker;R. L. McPherron;Charlie J. Farrugia

211
Citations
HF radar observations of Pc 5 field line resonances in the midnight/early morning MLT sector

J. M. Ruohoniemi;R. A. Greenwald;K. B. Baker;J. C. Samson

205
Citations
Equatorial spread F: Recent observations and a new interpretation

B. B. Balsley;Gerhard Haerendel;R. A. Greenwald

203
Citations
Observations of an enhanced convection channel in the cusp ionosphere

Michael Pinnock;Alan S. Rodger;J. R. Dudeney;K. B. Baker

196
Citations
ULF high- and low-m field line resonances observed with the Super Dual Auroral Radar Network

F. R. Fenrich;J. C. Samson;G. Sofko;R. A. Greenwald

189
Citations

Frequent Co-Authors

J. M. Ruohoniemi Virginia Tech

Mark Lester University of Leicester

John C. Samson University of Alberta

Patrick T. Newell Johns Hopkins University Applied Physics Laboratory

Mike Lockwood University of Reading

Geoffrey D. Reeves Los Alamos National Laboratory

Gang Lu National Center for Atmospheric Research

Mark Engebretson Augsburg College

Stanley W. H. Cowley University of Leicester

Ronald P. Lepping Goddard Space Flight Center

External Links

Personal website of R. A. Greenwald

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