psi_dyerhicks()

subroutine module_sf_mynn::psi_dyerhicks	(	real(kind_phys), intent(out)	psi_m,
		real(kind_phys), intent(out)	psi_h,
		real(kind_phys), intent(in)	zl,
		real(kind_phys), intent(in)	zt,
		real(kind_phys), intent(in)	z_0,
		real(kind_phys), intent(in)	za )