update_accum_field_ml

INTERFACE:

   subroutine update_accum_field_ml (name, field, nstep)

DESCRIPTION:

Accumulate multi level field over specified time interval.

ARGUMENTS:

     implicit none
     character(len=*), intent(in) :: name       !field name
     real(r8), pointer, dimension(:,:) :: field !field values for current time step
     integer , intent(in) :: nstep              !time step index

REVISION HISTORY:

   Created by Sam Levis
   Updated to clm2.1 data structures by Mariana Vertenstein
   Updated to include all subgrid type and multilevel fields by M. Vertenstein 03/2003

LOCAL VARIABLES: