  The IceCube Neutrino Observatory is a detector array at the South Pole with
the central aim of studying astrophysical neutrinos. However, the majority of
the detected neutrinos originates from cosmic ray interactions in the
atmosphere. The rate of these atmospheric neutrinos shows a seasonal variation
indicating that the rate changes with the temperature in the stratosphere.
These seasonal changes of the atmospheric neutrino energy spectrum will be
investigated using the Dortmund Spectrum Estimation Algorithm (DSEA). Based on
results obtained from 10% of IceCube's atmospheric muon neutrino data, taken
between 2011 and 2018, the differences of the measured fluxes during the
Austral summer and winter will be discussed.
