S
Steven K. Morley
Researcher at Los Alamos National Laboratory
Publications - 108
Citations - 4368
Steven K. Morley is an academic researcher from Los Alamos National Laboratory. The author has contributed to research in topics: Van Allen radiation belt & Magnetopause. The author has an hindex of 31, co-authored 104 publications receiving 3371 citations. Previous affiliations of Steven K. Morley include University of Newcastle & University of Southampton.
Papers
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Journal ArticleDOI
Electron Acceleration in the Heart of the Van Allen Radiation Belts
Geoffrey D. Reeves,Harlan E. Spence,Michael G. Henderson,Steven K. Morley,R. H. W. Friedel,Herbert O. Funsten,Daniel N. Baker,Shrikanth Kanekal,J. B. Blake,J. F. Fennell,Seth G. Claudepierre,Richard M. Thorne,Drew Turner,Craig Kletzing,William S. Kurth,Brian A. Larsen,J. T. Niehof +16 more
TL;DR: Measurements from NASA’s Van Allen Radiation Belt Storm Probes are reported that clearly distinguish between the two types of acceleration, and the observed radial profiles of phase space density are characteristic of local acceleration in the heart of the radiation belts and are inconsistent with a predominantly radial acceleration process.
Journal ArticleDOI
AE9, AP9 and SPM: New Models for Specifying the Trapped Energetic Particle and Space Plasma Environment
G. P. Ginet,T. P. O'Brien,S. L. Huston,W. R. Johnston,Timothy Guild,Reiner Friedel,C. D. Lindstrom,C. J. Roth,P. Whelan,R. A. Quinn,D. Madden,Steven K. Morley,Yi-Jiun Su +12 more
TL;DR: In this paper, a new set of models, denoted AE9/AP9/SPM, for energetic electrons, energetic protons and space plasma has been developed, which offer significant improvements including more detailed spatial resolution and quantification of uncertainty due to both space weather and instrument errors.
Journal Article
AE9, AP9 and SPM: New Models for Specifying the Trapped Energetic Particle and Space Plasma Environment
G. P. Ginet,T. P. O'Brien,S. L. Huston,W. R. Johnston,Timothy Guild,Reiner Friedel,C. D. Lindstrom,C. J. Roth,P. Whelan,R. A. Quinn,D. Madden,Steven K. Morley,Yi-Jiun Su +12 more
TL;DR: For example, U.S. Air Force (e contracts FA8718-05-C-0036, FA 8718-10C-001, FA8721-05C-0002 and FA8802-09-C_0001) as mentioned in this paper.
Journal ArticleDOI
Measures of model performance based on the log accuracy ratio
TL;DR: In this paper, the authors present a review of existing literature describing metrics for forecast accuracy and bias, concentrating on those based on relative errors and percentage errors, and introduce the log accuracy ratio and derive from it two metrics: the median symmetric 20 accuracy; and the symmetric signed percentage bias.
Journal ArticleDOI
Event‐specific chorus wave and electron seed population models in DREAM3D using the Van Allen Probes
Weichao Tu,Gregory S. Cunningham,Yu Chen,Steven K. Morley,Geoffrey D. Reeves,J. B. Blake,Daniel N. Baker,Harlan E. Spence +7 more
TL;DR: In this article, the DREAM3D diffusion model is applied to Van Allen Probes observations of the fast dropout and strong enhancement of MeV electrons during the October 2012 "double-dip" storm.