Title: Calculation of Last Closed Drift Shells for the 2013 GEM Radiation Belt Challenge Events

Journal Article · · Journal of Geophysical Research. Space Physics
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [2]; ORCiD logo [3]
  1. Air Force Research Lab. (AFRL), Kirtland AFB, Albuquerque, NM (United States)
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  3. Univ. of California, Los Angeles, CA (United States)
+ Show Author Affiliations

Radiation belt behavior is often analyzed in terms of adiabatic invariants, of which the third roughly characterizes the radial distance of particle drift shells. The outermost, or last closed drift shell, can be an important boundary for numerical modeling, especially for drift-averaged treatments such as three-dimensional diffusion codes. In this work, we discuss calculation of the last closed drift shell, using the widely used International Radiation Belt Environment Modeling (IRBEM) Library, the LanlGeoMag code, and a guiding center code named AFRL-Shell, in conjunction with a variety of current magnetic field models. Furthermore, we present results for the four events in 2013, comprising the radiation belt challenge organized by the Quantitative Assessment of Radiation Belt Modeling focus group of the Geospace Environment Modeling (GEM) program.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
National Aeronautic and Space Administration (NASA); US Air Force Office of Scientific Research (AFOSR); USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
89233218CNA000001
OSTI ID:
1650626
Report Number(s):
LA-UR-19-30975
Journal Information:
Journal of Geophysical Research. Space Physics, Journal Name: Journal of Geophysical Research. Space Physics Journal Issue: 11 Vol. 123; ISSN 2169-9380
Publisher:
American Geophysical UnionCopyright Statement
Country of Publication:
United States
Language:
English

References (44)

Enhanced radial transport and energization of radiation belt electrons due to drift orbit bifurcations: TRANSPORT AT DRIFT ORBIT BIFURCATIONS journal January 2014
Simulated magnetopause losses and Van Allen Probe flux dropouts journal February 2014
Magnetopause structure favorable for radiation belt electron loss: Magnetopause Shadowing journal July 2014
Simulating the Earth's radiation belts: Internal acceleration and continuous losses to the magnetopause: GLAUERT ET AL. journal September 2014
Global storm time depletion of the outer electron belt journal April 2015
A forecasting model of the magnetosphere driven by an optimal solar wind coupling function: A FORECASTING MAGNETOSPHERE MODEL journal October 2015
Reconstructing the magnetosphere from data using radial basis functions: RECONSTRUCTING MAGNETOSPHERE WITH RBFs journal March 2016
Nonstorm time dropout of radiation belt electron fluxes on 24 September 2013: NONSTORM RADIATION BELT DROPOUT journal July 2016
An empirical RBF model of the magnetosphere parameterized by interplanetary and ground-based drivers: RBF MAGNETOSPHERE MODEL journal November 2016
A hybrid approach to empirical magnetosphere modeling: HYBRID MAGNETOSPHERE MODEL journal August 2017
Understanding the Mechanisms of Radiation Belt Dropouts Observed by Van Allen Probes journal October 2017
Improving Empirical Magnetic Field Models by Fitting to In Situ Data Using an Optimized Parameter Approach: OPTIMIZING MODELS WITH IN SITU DATA journal December 2017
Magnetospheric convection and magnetopause shadowing effects in ULF wave-driven energetic electron transport: ULF WAVE-DRIVEN ELECTRON TRANSPORT journal June 2013
A novel technique for rapid L ∗ calculation: Algorithm and implementation: RAPID L ∗ CALCULATION journal May 2013
Dynamics of Magnetically Trapped Particles book January 2014
On the source location of radiation belt relativistic electrons journal February 2000
Modeling the dynamics of the inner magnetosphere during strong geomagnetic storms journal January 2005
A nearly universal solar wind-magnetosphere coupling function inferred from 10 magnetospheric state variables: UNIVERSAL COUPLING FUNCTION journal January 2007
Bifurcation of drift shells near the dayside magnetopause: DRIFT-SHELL BIFURCATION journal July 2007
Solar wind parameters for magnetospheric magnetic field modeling: SOLAR WIND PARAMETERS journal November 2007
Magnetospheric configurations from a high-resolution data-based magnetic field model: MAGNETOSPHERIC HIGH-RESOLUTION MODEL journal June 2007
A quantitative assessment of empirical magnetic field models at geosynchronous orbit during magnetic storms: TEST MAGNETIC FIELD MODELS journal April 2008
Dynamical data-based modeling of the storm-time geomagnetic field with enhanced spatial resolution: EMPIRICAL GEOMAGNETIC FIELD MODEL journal July 2008
Numerical calculations of relativistic electron drift loss effect: RELATIVISTIC ELECTRON DRIFT LOSS journal September 2008
A statistical comparison of commonly used external magnetic field models: A COMPARISON OF MAGNETIC FIELD MODELS journal October 2008
Numerical estimates of drift loss and Dst effect for outer radiation belt relativistic electrons with arbitrary pitch angle: COMBINED DRIFT LOSS AND DST EFFECT journal March 2010
A split in the outer radiation belt by magnetopause shadowing: Test particle simulations: A SPLIT IN THE OUTER RADIATION BELT journal August 2010
A rapid, global and prolonged electron radiation belt dropout observed with the Global Positioning System constellation: FAST RADIATION BELT LOSSES journal March 2010
Drift shell bifurcation near the dayside magnetopause in realistic magnetospheric magnetic fields: DRIFT SHELL BIFURCATION IMF B Y journal October 2010
Radiation belt electron dynamics driven by adiabatic transport, radial diffusion, and wave-particle interactions: INFLUENCE OF ADIABATIC TRANSPORT journal April 2011
Outer radiation belt boundary location relative to the magnetopause: Implications for magnetopause shadowing: BRIEF REPORT journal June 2011
L * neural networks from different magnetic field models and their applicability journal February 2012
Outer Radiation Belt Flux Dropouts: Current Understanding and Unresolved Questions book January 2012
A novel technique for rapid L * calculation using UBK coordinates: RAPID L * CALCULATION journal January 2013
On the Role of Last Closed Drift Shell Dynamics in Driving Fast Losses and Van Allen Radiation Belt Extinction journal May 2018
EMIC Wave Events During the Four GEM QARBM Challenge Intervals journal August 2018
Nonlinear relativistic gyrokinetic Vlasov-Maxwell equations journal December 1999
Trajectories of charged particles trapped in Earth’s magnetic field journal May 2012
SpacePy - A Python-based Library of Tools for the Space Sciences conference January 2010
Quantifying the effect of magnetopause shadowing on electron radiation belt dropouts journal January 2013
Radial diffusion simulations of the 20 September 2007 radiation belt dropout journal January 2014
LANL* V1.0: a radiation belt drift shell model suitable for real-time and reanalysis applications journal January 2009
LANL*V2.0: global modeling and validation journal January 2011
Calculations of the integral invariant coordinates I and L* in the magnetosphere and mapping of the regions where I is conserved, using a particle tracer (ptr3D v2.0), LANL*, SPENVIS, and IRBEM journal January 2015

Cited By (5)

Earth's Van Allen Radiation Belts: From Discovery to the Van Allen Probes Era journal November 2019
Quantitative Assessment of Radiation Belt Modeling journal February 2019
How Do Ultra‐Low Frequency Waves Access the Inner Magnetosphere During Geomagnetic Storms? journal October 2019
Modeling the Magnetopause Shadowing Loss During the June 2015 Dropout Event journal August 2019
Impact of Significant Time‐Integrated Geomagnetic Activity on 2‐MeV Electron Flux journal June 2019

Similar Records

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
Heliospheric and magnetospheric physics