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IRI2016 International Reference Ionosphere from Python

Project description

IRI2016 ionosphere model from Python and Matlab

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Python and Matlab interfaces to the International Reference Ionosphere (IRI) 2016 model. A Fortran compiler is required to build the IRI2016 code.

Install

Prerequisites

  • Fortran compiler--any modern Fortran compiler will do. Here's how to get Gfortran:
    • Linux: apt install gfortran
    • Mac: brew install gcc
    • Windows: consider MSYS2

and then install latest release:

pip install iri2016

if you want the latest development version:

git clone https://github.com/space-physics/iri2016

pip install -e iri2016

This Python wrapper of IRI2016 uses our build-on-run technique. On the first run or iri2016.IRI() the Fortran code is built--we call this "build on run".

If you have errors about building on the first run, ensure that your Fortran compiler is specified in environment variable FC--this is what most build systems use to indicate the desired Fortran compiler (name or full path).

Manual build

This should not be necessary, but is included for troubleshooting purposes. This assumess you have a local copy of IRI2016 like:

git clone https://github.com/space-physics/iri2016

ctest -S iri2016/src/iri2016/setup.cmake -VV

Usage

  • Altitude Profile: plot density and temperatures vs altitude

    python -m iri2016.altitude 2003-11-21T12 -11.95 -76.77
    

    image

  • Latitude profile: plot densities and height at the peak of F2, F2, and E regions vs geographic latitude

    python -m iri2016.latitude 2004-11-21T17 -76.77
    

    image

  • Time profile: plot densities and height at the peak of F2, F2, and E regions vs UTC

    python -m iri2016.time 2014-11-21 2014-11-22 1 -11.95 -76.77
    

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    image

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  • Latitude vs Longitude: plot of foF2 a function of geographic latitude and longitude image

setting JF flags

irisub.for has a few dozen logical flags stored in variable JF. To reconfigure those flags, edit iri2016_driver.f90 and recompile iri2016_driver.exe.

Matlab

IRI2016 is readily accessible from Matlab. From within Matlab verify everything is working by:

runtests('iri2016')

The Examples directory has simple example use with plots.

Matlab IRI2016 plot

Data files

iri2016/iri2016/data/index/{apf107,ig_rz}.dat are regularly updated. Currently we don't auto-update those.

Notes

Project details


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