  Circumbinary planets experience a time varying irradiation pattern as they
orbit their two host stars. In this work, we present the first detailed study
of the atmospheric effects of this irradiation pattern on known and
hypothetical gaseous circumbinary planets. Using both a one-dimensional Energy
Balance Model and a three-dimensional General Circulation Model, we look at the
temperature differences between circumbinary planets and their equivalent
single-star cases in order to determine the nature of the atmospheres of these
planets. We find that for circumbinary planets on stable orbits around their
host stars, temperature differences are on average no more than 1.0% in the
most extreme cases. Based on detailed modeling with the General Circulation
Model, we find that these temperature differences are not large enough to
excite circulation differences between the two cases. We conclude that gaseous
circumbinary planets can be treated as their equivalent single-star case in
future atmospheric modeling efforts.
