A 3D general circulation model for Pluto and Triton with fixed volatile abundance and simplified surface forcing

► We present a 3D general circulation model of Pluto and Triton's atmospheres. ► Vertical motion is practically nonexistent, while horizontal flow is mainly zonal. ► The meridional and dayside-nightside temperature contrast is small. ► The strong temperature inversion on Pluto prohibits vertical motion. ► The flow behavior of Triton's plumes can be explained by wind shear alone.