  AniMAIRE (Anisotropic Model for Atmospheric Ionising Radiation Effects) is a
new model and Python toolkit for calculating radiation dose rates experienced
by aircraft during anisotropic solar energetic particle events. AniMAIRE
expands the physics of the MAIRE+ model such that dose rate calculations can be
performed for anisotropic solar energetic particle conditions by supplying a
proton or alpha particle rigidity spectrum, a pitch angle distribution, and the
conditions of Earth's magnetosphere. In this paper, we describe the algorithm
and top-level structure of AniMAIRE and showcase AniMAIRE's capabilities by
analysing the dose rate maps that AniMAIRE produces when the time-dependent
spectra and pitch angle distribution for GLE71 are inputted. We find that the
dose rates AniMAIRE produces for the event fall between the dose rates produced
by the WASAVIES and CRAC:DOMO models. Dose rate maps that evolve throughout the
event are also shown, and it is found that each peak in the inputted pitch
angle distribution generates a dose rate hotspot in each of the polar regions.
AniMAIRE has been made available openly online so that it can be downloaded and
run freely on local machines and so that the space weather community can easily
contribute to it using Github forking.
