homopause

From homo- +‎ pause.

homopause (plural homopauses)

1. The level of an atmosphere below which its constituent molecules are well mixed
   • 2016, J. M. Chadney, M. Galand, T. T. Koskinen, S. Miller, J. Sanz-Forcada, Y. C. Unruh, R. V. Yelle, “EUV-driven ionospheres and electron transport on extrasolar giant planets orbiting active stars”, in arXiv‎^[1]:

     The H${\displaystyle _{3}^{+}}$ peak in EGPs with upper atmospheres where H${\displaystyle _{2}}$ is dissociated under strong stellar illumination is pushed to altitudes below the homopause, where this ion is likely to be destroyed through reactions with heavy species.