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Andrew J. Gerrard
Researcher at New Jersey Institute of Technology
Publications - 70
Citations - 1574
Andrew J. Gerrard is an academic researcher from New Jersey Institute of Technology. The author has contributed to research in topics: Magnetosphere & Van Allen Probes. The author has an hindex of 20, co-authored 67 publications receiving 1192 citations. Previous affiliations of Andrew J. Gerrard include State University of New York System & University of Birmingham.
Papers
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Journal ArticleDOI
An impenetrable barrier to ultrarelativistic electrons in the Van Allen radiation belts
Daniel N. Baker,Allison Jaynes,V. Hoxie,Richard M. Thorne,John C. Foster,Xinlin Li,J. F. Fennell,John Wygant,Shrikanth Kanekal,Philip J. Erickson,William S. Kurth,Wen Li,Qianli Ma,Quintin Schiller,Lauren Blum,David M. Malaspina,Andrew J. Gerrard,Louis J. Lanzerotti +17 more
TL;DR: It is suggested that exceptionally slow natural inward radial diffusion combined with weak, but persistent, wave–particle pitch angle scattering deep inside the Earth’s plasmasphere can combine to create an almost impenetrable barrier through which the most energetic Van Allen belt electrons cannot migrate.
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Mesosphere inversion layers and stratosphere temperature enhancements
TL;DR: In this article, the authors present a review of the literature and explicitly propose a classification scheme based on the different formation mechanisms suspected to cause these events, and summarize the relationship between this feature and sudden stratospheric warmings, as well as the potential for in situ gravity wave generation.
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A study of the role of ion–molecule chemistry in the formation of sporadic sodium layers
Stephen C. Collins,John M. C. Plane,Michael C. Kelley,Timothy G. Wright,Pavel Soldán,Timothy J. Kane,Andrew J. Gerrard,Brent W. Grime,R. J. Rollason,Jonathan S. Friedman,Sixto A. González,Qihou Zhou,Michael P. Sulzer,Craig A. Tepley +13 more
TL;DR: In this paper, the authors test the theoretical explanation proposed by Cox and Plane (1998) where Na + in a plasma layer is neutralized via an ion-molecule mechanism to form a sporadic sodium layer.
Journal Article
Gravity-wave influences on Arctic mesospheric clouds as determined by a Rayleigh lidar at Sondrestrom, Greenland : Layered Phenomenoa in the mesopause region (LPMR)
TL;DR: In this article, a microphysical cloud model was performed under summer mesospheric conditions with and without gravity-wave activity, and the model simulation reproduced the behavior observed in the ensemble cloud properties by producing a broader altitude distribution, weaker backscatter strength, and thinner clouds.
Journal ArticleDOI
Gravity-wave influences on Arctic mesospheric clouds as determined by a Rayleigh lidar at Sondrestrom, Greenland
TL;DR: In this paper, a microphysical cloud model was performed under summer mesospheric conditions with and without gravity-wave activity and the model simulation reproduced the behavior observed in the ensemble cloud properties by producing a broader altitude distribution, weaker backscatter strength, and thinner clouds.