  Meridional wind component tendency [m/s/time step]
              [real, dimension(:,:,nlev)]

    rain0     Liquid precipitation (rain) in kg/m2
              [real, dimension(:,:)]

    snow0     Frozen precipitation (snow) in kg/m2
              [real, dimension(:,:)]

input (optional) - for use with the step-mountain (eta) vertical coordinate

    kbot      Index of the lowest model level
              [integer, dimension(:,:)]

input (optional) - for use with prognostic stratiform cloud module

    ql