!-----------------------------------------------------------------------
!nam_dynspg    !   surface pressure gradient   (CPP key only)
!-----------------------------------------------------------------------
!                          !  Non-linear free surface                   ("key_vvl")
!                          !  explicit free surface                     ("key_dynspg_exp")
!                          !  filtered free surface                     ("key_dynspg_flt")
!                          !  split-explicit free surface               ("key_dynspg_ts")
!                          !  rigid-lid                                 ("key_dynspg_rl")
/