https://github.com/fgasdia/eppionization.jl
Lookup table for ionization from energetic particle precipitation from Earth's radiation belts.
Science Score: 36.0%
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Repository
Lookup table for ionization from energetic particle precipitation from Earth's radiation belts.
Basic Info
- Host: GitHub
- Owner: fgasdia
- License: mit
- Language: Julia
- Default Branch: main
- Size: 24.2 MB
Statistics
- Stars: 3
- Watchers: 1
- Forks: 0
- Open Issues: 0
- Releases: 0
Metadata Files
README.md
EPPIonization.jl
Generate D-region charge density profiles resulting from ionization from energetic particle precipitation (EPP).
This package interpolates across a lookup table of Monte Carlo modeling results for the ionization generated by EPP. It is based on code written by Wei Xu (see Citations below).
NRLMSISE-00 and FaradayInternationalReferenceIonosphere.jl are used to generate neutral profiles and electron density profiles for the specified DateTime, latitude, and longitude. The GPI model is used to generate the resulting charge density profiles for the lower ionosphere. If a precipitating electron flux is specified, GPI will incorporate the appropriate ionization profile.
Usage
```julia using Dates, EPPIonization using LMPTools # using Pkg; Pkg.add("https://github.com/fgasdia/LMPTools.jl")
z = 0:110 # altitudes in km dt = DateTime(2020, 1, 1, 2, 30) lat, lon = 60, 258 flux = 1e5 # electron flux in el/cm²/s
daytime = isday(zenithangle(lat, lon, dt))
Compute table of profiles np with columns of height h in kilometers,
electron density Ne in m⁻³ from FIRI,
neutral temperature Tn in Kelvin, and densities of neutral O, N2, and O2 in m⁻³,
both from NRLMSISE-00.
np = neutralprofiles(lat, lon, z, dt)
Without specifying flux, chargeprofiles returns only the GPI-derived background profiles.
bp = chargeprofiles(lat, lon, z, dt) bp = chargeprofiles(np, z, daytime)
When specifying the flux, we get the GPI-derived background and EPP-perturbed profiles.
bp, epp = chargeprofiles(flux, lat, lon, z, dt) bp, epp = chargeprofiles(flux, np, z, daytime) ```
Citations
This code is based on:
Xu, Wei, Marshall, Robert A, Tyssoy, Hilde Nesse, & Fang, Xiaohua. (2020). A Generalized Method for Calculating Atmospheric Ionization by Energetic Electron Precipitation. https://doi.org/10.5281/zenodo.3945306
The original Matlab source code is available at https://zenodo.org/record/3945306 under Creative Commons Attribution 4.0 International license.
Owner
- Name: Forrest Gasdia
- Login: fgasdia
- Kind: user
- Repositories: 8
- Profile: https://github.com/fgasdia
GitHub Events
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Last synced: about 1 year ago
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Top Authors
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- fgasdia (2)
- JamesMCannon (1)
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- fgasdia (4)