<p dir="ltr">This dataset contains information on the atmospheric fields of Mars, as simulated by a Mars Global Circulation Model (MGCM) that has been extended to include gas-phase chlorine chemistry. The data has been used to study the dynamics and gas-phase photochemistry of chlorine species in the Martian atmosphere, as well as to investigate the possible surface distribution of chlorine species that adsorb onto the surface from the atmosphere.</p><p dir="ltr">The data included here covers the output from a simulation of a single Mars Year (Mars Year 35). Further information about the dataset can be found in the included reference document 'Dataset_Introduction.pdf'</p>