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EPREM/0.14/ROR/TEMPLATE

Run Description 

SimulationRun Metadata Template for EPREM 0.14 ROR runs

Simulation Time:

Simulation Start Time:
Simulation End Time:
Time Step in second:
Simulation Time Description:
Simulation Time Caveats:

Temporal Dependence (whether the outputs of the simulation code are time-dependent?): false

Regions:

Heliosphere
Heliosphere.Inner

Simulation Domain :

Contacts :

List of Run Input Parameter Grouping and their associated properties :

Name Description Caveats Properties
Basic Input Parameters 
The basic parameters that a user is asked to input in order to run eprem.
Name Label Description Caveats Units Default Value or Actual Value Valid Min Valid Max
flowMag flowMag 
The flow speed of the ambient solar wind.
user enters in km/s, but the model input is technically in cm/s km/s 400 200 800
idealShock idealShock 
A switch to included/not include a shock (to simulate a CME).
1 = shock :: 0 = no shock bool 0 1
numObservers numObservers 
Number of point observers
 int 1 0 10
obsR obsR 
Vector of the radial positions of the point observers
 AU 1 0.0930094 5
obsTheta obsTheta 
Vector of the latitudes of the point observers
90 deg will be added before writing it to input file. degrees 0 -90 90
obsPhi obsPhi 
Vector of the longitudes of the point observers.
degrees 0 0 360
mode mode 
mode
mfpPower mfpPower 
Radial power for parallel scattering mean free path.
 2 -10 10
SEP Parameters 
The basic and advanced parameters associated with the SEP population simulated.
Name Label Description Caveats Units Default Value or Actual Value Valid Min Valid Max
eMin eMin 
Minimum energy of the SEP spectrum
 MeV/nucleon 1 0.8 1000
eMax eMax 
maximum energy of the SEP spectrum
 MeV/nucleon 1000 25 3000
numEnergySteps numEnergySteps 
The number of energy bins for the SEP spectrum.
 int 20 2 30
numMuSteps numMuSteps 
number of pitch angle steps for the SEP distribution
 int 9 2 25
boundaryFunctGamma boundaryFunctGamma 
energy power law index of the seed population for SEPs
 2 1.5 2.0
boundaryFunctBeta boundaryFunctBeta 
radial power law index for SEP seed population
 2 1.5 2.0
boundaryFunctEcutoff boundaryFunctEcutoff 
exponential rollover energy for the SEP seed population
 MeV/nucleon 1 1.0 50.0
numSpecies numSpecies 
The number of SEP particle species
 int 1 1 10
mass mass 
Vector for particle species masses
 nucleons 1 1 56
charge charge 
vector for the charge of each SEP species
 e 1 1 26
boundaryFunctAmplitude boundaryFunctAmplitude 
amplitude of reference flux at 1 AU
 n / (cm^2*s*sr*MeV/nuc) 1 0.01 10.0
abundance abundance 
Vector for ratio of each species to H
 1 0.001 1.0
boundaryFunctE0 boundaryFunctE0 
Power-law reference energy for source population.
 MeV/nucleon 1 0 5
Ideal Shock Parameters 
The basic and advanced parameters associated with the idealized shock that simulates a CME in the uncoupled version of the model.
Name Label Description Caveats Units Default Value or Actual Value Valid Min Valid Max
idealShockGradient idealShockGradient 
Scale factor for the shock, normally equal to the sharpness divided by the scale length.
 1/AU 215.0953948 0 1000
idealShockSpeed idealShockSpeed 
The propagation speed of the ideal shock.
entered by the user in km/s, but technically input to the model as cm/s km/s 1000 200 1500
idealShockTheta idealShockTheta 
The latitude of the center of the shock.
90 deg will be added before writing it to input file. degrees 0 -90 90
idealShockPhi idealShockPhi 
The longitude of the center of the shock.
degrees 0 0 360
idealShockWidth idealShockWidth 
The opening angle of the ideal shock.
An opening angle of zero will produce a shock all the way around the sun. degrees 90 0 180
idealShockSharpness idealShockSharpness 
Sharpness of the shock.
 1.0 0.01 1.0
idealShockScaleLength idealShockScaleLength 
The exponential scale length of shock variation.
AU 0.0046491 0.0001 1.0
idealShockJump idealShockJump 
Shock density compression ratio
 4 0.1 10.0
idealShockInitTime idealShockInitTime 
The time of injection for the shock.
days 0.5 0.1 3.0
Advanced Parameters 
The other advanced parameters that a user may specify when initiating a run.
Name Label Description Caveats Units Default Value or Actual Value Valid Min Valid Max
numRowsPerFace numRowsPerFace 
The number of rows of streams per face of a cube around the Sun.
This is combined with the columns per face to decide how many total streams will be in the heliosphere. More total streams more heavily populates the space with nodes. Setting rows and columns to odd numbers ensures that there is a stream coming directly from the center of each face of the cube. int 5 1 9
numColumnsPerFace numColumnsPerFace 
Number of columns of streams per face of a cube around the Sun.
This is combined with the rows per face to decide how many total streams will be in the heliosphere. More total streams more heavily populates the space with nodes. Setting rows and columns to odd numbers ensures that there is a stream coming directly from the center of each face of the cube. int 5 1 9
numNodesPerStream numNodesPerStream 
The number of nodes on each stream.
int 200 15 500
rScale rScale 
location of inner boundary
 by default at 1 solar radius AU 0.00465047 0.00465047 0.0930094
simStartTime simStartTime 
The starting time of the simulation
 days 0.0 0.0 3.0
simStopTime simStopTime 
the ending time of the simulation
 days 8 1 20.0
tDel tDel 
The size of a time step in the simulation
 days 0.1 0.1 1.0
lamo lamo 
mean free path of 1 GV particles at 1 AU
 AU 0.1 0.01 1.0
kperxkpar kperxkpar 
Ratio of perpendicular to parallel diffusion strength
 0 0.001 1.0
mhdDensityAu mhdDensityAu 
number density of the solar wind
n/cm^-3 8.3 1.0 20.0
mhdBAu mhdBAu 
magnetic field at 1 AU
 G 1.6e-05 8.0e-06 3.2e-05
unifiedOutput unifiedOutput 
output all data for every node
bool 1 0 1
outputFlux outputFlux 
output flux instead of particle distribution
 bool 0 0 1
epremDomain epremDomain 
output position data for the entire domain
 bool 1 0 1
outputFloat outputFloat 
output single precision to reduce file size
 bool 0 0 1
useParallelDiffusion useParallelDiffusion 
use parallel diffusion
 bool 1 0 1
useAdiabaticChange useAdiabaticChange 
use adiabatic change
 bool 1 0 1
useAdiabaticFocus useAdiabaticFocus 
use adiabatic focusing
 bool 1 0 1
boundaryFunctionInitDomain boundaryFunctionInitDomain 
initialize particle source function over the entire domain
 bool 1 0 1
omegaSun omegaSun 
solar rotation rate
 rad/(AU/c) 0.0013829517 0.00072577304 0.36288652
mfpInverseB mfpInverseB 
Force the parallel mean free path to be proportional to an inverse power of the magnetic-field magnitude, equal to -mfpPower/2.
 0 = no :: 1 = yes bool
rigidityPower rigidityPower 
Power-law dependence of mean free path on particle rigidity
 0.33333333 0 1
idealShockPhiWidth idealShockPhiWidth 
Azimuthal width of the shock. This is used to create an elliptical cone.
 A value of zero for idealShockPhiWidth and idealShockPhiTheta will produce a shock of 360 degrees. degrees 90 0 180
idealShockThetaWidth idealShockThetaWidth 
Polar width of the shock. This is used to create an elliptical cone.
 A value of zero for idealShockPhiWidth and idealShockPhiTheta will produce a shock of 360 degrees. degrees 90 0 180
idealShockFalloff idealShockFalloff 
Exponential rate at which shocked quantities return to their upstream values.
 1 0 1000
useDegrees useDegrees 
Accept degrees instead of radians as input for angular parameters.
 bool 1 0 1
useDrift useDrift 
Use drift
 bool 0 0 1
dumpFreq dumpFreq 
Number of steps to output restart files
 int 1
numEpSteps numEpSteps 
Number of substeps for EP computation
 int 30
interpWeight interpWeight 
Exponent of inverse distance used to interpolate stream quantities to point observers.
 3
interpDistance interpDistance 
Distance from each observer beyond which stream quantities do not contribute to that observer's interpolated quantities.
 AU 0.5
checkSeedPopulation checkSeedPopulation 
Reset distribution if it drops below background
 bool 1 0 1

Run Access Information :

Keyword(s) :

Linked to Parent Spase Resource(s) (example: SimulationModel) :

spase://CCMC/SimulationModel/EPREM/0

List of Publications Referencing this Run :

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