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June 7, 2026Space WeatherOpen Access

A Major Update to the PyIRI Model

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Authors

NSNina Servan-SchreiberVFVictoriya V. ForsytheMBMeghan Burleigh

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Overview

This major update reformulates the IRI model to improve ionospheric climatology representation, suggesting better predictability.

Key Points

  • The aim is to enhance the PyIRI model for improved accuracy in ionospheric climatology using updated coefficients.
  • Reformulated IRI core coefficients using spherical harmonics in quasi-dipole latitude and magnetic local time.
  • Validated against IRI-2020 with coefficients stored in standardized NetCDF format.
  • Conducted reconstruction error analysis to determine optimal spatial and temporal coefficients.
  • Substantial reduction of artificial small-scale oscillations in the new formulation.
  • Updated model demonstrates greater consistency with the SAMI physics-based model.
  • Inclusion of new IRI parameters such as SHU-2015 and AMTB2013 options for hm F2.

Cite This Study

Servan-Schreiber et al. (2026) studied this question.

synapsesocial.com/papers/6a250b4c7def13d035e1b4e5https://doi.org/10.1029/2025sw004853
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