Results from simulations with the coarse-resolution version of MPI-ESM performed by the RETRO team at DKRZ. The left side shows a normal (prograde) rotating earth. The right side shows a backwards (retrograde) rotating earth. The simulations are forced with pre-industrial boundary conditions. For the full description see the Earth System Dynamics manuscript "The climate of a retrograde rotating earth". Results from simulations with the coarse-resolution version of MPI-ESM performed by the RETRO team at DKRZ. The left side shows a normal (prograde) rotating earth. The right side shows a backwards (retrograde) rotating earth. The simulations are forced with pre-industrial boundary conditions. For the full description see the Earth System Dynamics manuscript "The climate of a retrograde rotating earth". Monthly averaged precipitation indicates how the tropical rain belt of the Intertropical Convergence Zone (ITCZ) is moving through the seasons. The general movement is similar in the two simulations, while a reorganization of the tropical ITCZ is evident. Differences are most pronounced over the tropical Atlantic, central Pacific and the Middle East. Note, that the Sahara suddenly becomes very wet!