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Title: An empirical model of electron and ion fluxes derived from observations at geosynchronous orbit

Journal Article · · Space Weather
DOI:https://doi.org/10.1002/2015SW001168· OSTI ID:1193436
 [1];  [2];  [3];  [3];  [1];  [4];  [5];  [6]
  1. Space Science Institute, Boulder, CO (United States)
  2. Planetary Science Institute, Tucson, AZ (United States)
  3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  4. Sellafield Ltd., Seascale (United Kingdom)
  5. SES Engineering, Betzdorf (Luxembourg)
  6. Lancaster Univ., Lancaster (United Kingdom)
+ Show Author Affiliations

Knowledge of the plasma fluxes at geosynchronous orbit is important to both scientific and operational investigations. We present a new empirical model of the ion flux and the electron flux at geosynchronous orbit (GEO) in the energy range ~1 eV to ~40 keV. The model is based on a total of 82 satellite-years of observations from the Magnetospheric Plasma Analyzer instruments on Los Alamos National Laboratory satellites at GEO. These data are assigned to a fixed grid of 24 local-times and 40 energies, at all possible values of Kp. Bi-linear interpolation is used between grid points to provide the ion flux and the electron flux values at any energy and local-time, and for given values of geomagnetic activity (proxied by the 3-hour Kp index), and also for given values of solar activity (proxied by the daily F10.7 index). Initial comparison of the electron flux from the model with data from a Compact Environmental Anomaly Sensor II (CEASE-II), also located at geosynchronous orbit, indicate a good match during both quiet and disturbed periods. The model is available for distribution as a FORTRAN code that can be modified to suit user-requirements.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC52-06NA25396
OSTI ID:
1193436
Report Number(s):
LA-UR-15-20164
Journal Information:
Space Weather, Vol. 13, Issue 4; ISSN 1542-7390
Publisher:
American Geophysical UnionCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 35 works
Citation information provided by
Web of Science

References (47)

Magnetospheric plasma analyzer for spacecraft with constrained resources journal April 1993
The three-hour-range index measuring geomagnetic activity journal January 1939
Physical improvements to the solar wind reconnection control function for the Earth's magnetosphere: SOLAR WIND/MAGNETOSPHERE RECONNECTION journal May 2013
A statistical look at plasmaspheric drainage plumes: PLASMASPHERIC DRAINAGE PLUMES journal September 2008
Electron loss rates from the outer radiation belt caused by the filling of the outer plasmasphere: The calm before the storm: RADIATION BELT ELECTRON LOSS RATES journal November 2009
The superdense plasma sheet: Plasmaspheric origin, solar wind origin, or ionospheric origin? journal October 1997
Estimating the effects of ionospheric plasma on solar wind/magnetosphere coupling via mass loading of dayside reconnection: Ion-plasma-sheet oxygen, plasmaspheric drainage plumes, and the plasma cloak: IONOSPHERE AND SOLAR WIND COUPLING journal September 2013
Long-lived plasmaspheric drainage plumes: Where does the plasma come from?: Long-Lived Plasmaspheric Plumes journal August 2014
Superposed epoch analysis of high-speed-stream effects at geosynchronous orbit: Hot plasma, cold plasma, and the solar wind: SUPERPOSED EPOCH ANALYSIS OF HSS journal July 2008
Magnetosphere response to high-speed solar wind streams: A comparison of weak and strong driving and the importance of extended periods of fast solar wind: HSSs: WEAK AND STRONG DRIVING journal May 2012
Observations and modeling of magnetic flux tube refilling of the plasmasphere at geosynchronous orbit: Refilling at Geosynchronous Orbit journal November 2014
Bulk plasma properties at geosynchronous orbit journal January 2005
Transport of plasma sheet material to the inner magnetosphere journal January 2007
Compact environmental anomaly sensor (CEASE): a novel spacecraft instrument for in situ measurements of environmental conditions journal January 1998
Evolution of plasmaspheric ions at geosynchronous orbit during times of high geomagnetic activity journal August 1996
Transport of the plasma sheet electrons to the geostationary distances: TRANSPORT OF PLASMA SHEET ELECTRONS journal January 2013
Nowcast model for low-energy electrons in the inner magnetosphere journal January 2015
The Van Allen Probes Mission book January 2014
Simultaneous remote sensing and in situ observations of plasmaspheric drainage plumes journal January 2004
Electron number density, temperature, and energy density at GEO and links to the solar wind: A simple predictive capability journal June 2014
Substorms during the 10–11 August 2000 sawtooth event journal January 2006
Magnetospheric and auroral activity during the 18 April 2002 sawtooth event journal January 2006
An examination of the process and magnitude of ionospheric plasma supply to the magnetosphere journal January 2005
Effects of plasma sheet variability on the fast initial ring current decay: EFFECTS OF PLASMA SHEET VARIABILITY journal March 2003
Comparative study of ring current development using empirical, dipolar, and self-consistent magnetic field simulations: RING CURRENT AND MAGNETIC FIELD DYNAMICS journal December 2010
Excitation of whistler mode chorus from global ring current simulations: GLOBAL SIMULATIONS OF CHORUS WAVES journal May 2010
Plasma sheet access to geosynchronous orbit: Generalization to numerical global field models journal December 2001
Circulation of Heavy Ions and Their Dynamical Effects in the Magnetosphere: Recent Observations and Models journal October 2014
Superposed epoch analysis of a whistler instability criterion at geosynchronous orbit during geomagnetic storms journal November 2008
High-speed stream driven inferences of global wave distributions at geosynchronous orbit: relevance to radiation-belt dynamics
  • MacDonald, Elizabeth A.; Blum, Lauren W.; Gary, S. Peter
  • Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, Vol. 466, Issue 2123 https://doi.org/10.1098/rspa.2010.0076
journal May 2010
Characterization of geostationary particle signatures based on the ‘Injection Boundary’ Model journal January 1983
An optimum solar wind coupling function for the AL index : Optimum AL coupling journal April 2015
H + and O + content of the plasma sheet at 15-19 Re as a function of geomagnetic and solar activity : THE PLASMA SHEET H journal December 2010
A nearly universal solar wind-magnetosphere coupling function inferred from 10 magnetospheric state variables: UNIVERSAL COUPLING FUNCTION journal January 2007
Change of the plasma sheet ion composition during magnetic storm development observed by the Geotail spacecraft: PLASMA SHEET ION COMPOSITION CHANGE DURING STORMS journal May 2003
Global view of refilling of the plasmasphere journal January 2007
A new international geostationary electron model: IGE-2006, from 1 keV to 5.2 MeV: GEOSTATIONARY ELECTRON MODEL journal July 2008
A comprehensive survey of plasmasphere refilling at geosynchronous orbit journal November 2001
Why Kp is such a good measure of magnetospheric convection journal November 2004
Two-satellite observations of substorm injections at geosynchronous orbit journal May 2001
Delivery of cold, dense plasma sheet material into the near-Earth region journal January 2003
Statistics of plasma fluxes at geosynchronous orbit over more than a full solar cycle: GEOSYNCHRONOUS PLASMA FLUXES journal March 2007
Free energy to drive equatorial magnetosonic wave instability at geosynchronous orbit: FREE ENERGY FOR MAGNETOSONIC WAVES journal August 2011
Study of plasmaspheric evolution using geosynchronous observations and global modeling journal March 1997
Exploring sources of magnetospheric plasma using multispecies MHD: PLASMA SOURCES IN BATSRUS journal April 2010
Effect of storm-time plasma pressure on the magnetic field in the inner magnetosphere journal January 2005
Self-consistent modeling of magnetic fields and plasmas in the inner magnetosphere: Application to a geomagnetic storm journal January 2006

Cited By (3)

Space Weather Influence on Electromagnetic Geosynchronous Debris Perturbations Using Statistical Fluxes journal April 2018
Space Weather Effects Produced by the Ring Current Particles journal October 2017
Reanalysis of Ring Current Electron Phase Space Densities Using Van Allen Probe Observations, Convection Model, and Log‐Normal Kalman Filter journal April 2019

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