var/da/da_ssmi/da_jo_and_grady_ssmi_rv.inc

   1 subroutine da_jo_and_grady_ssmi_rv(iv, re, jo, jo_grad_y)
   2
   3    !-----------------------------------------------------------------------
   4    ! Purpose: TBD
   5    !-----------------------------------------------------------------------
   6
   7    implicit none
   8
   9    type (iv_type), intent(in)    :: iv          ! Ob Inc. structure.
  10    type (y_type),  intent(in)    :: re          ! Residual structure.
  11    type (y_type),  intent(inout) :: jo_grad_y   ! Grad_y(Jo)
  12    type (jo_type), intent(inout) :: jo          ! Obs cost function.
  13
  14    integer  :: n
  15
  16    if (trace_use) call da_trace_entry("da_jo_and_grady_ssmi_rv")
  17
  18    jo % ssmir_speed = 0.0
  19    jo % ssmir_tpw   = 0.0
  20
  21    do n=1, iv%info(ssmi_rv)%nlocal
  22       jo_grad_y%ssmi_rv(n)%speed = - re%ssmi_rv(n)%speed / &
  23          (iv%ssmi_rv(n)%speed%error * iv%ssmi_rv(n)%speed%error)
  24
  25       jo_grad_y%ssmi_rv(n)%tpw = -re%ssmi_rv(n)%tpw / &
  26           (iv%ssmi_rv(n)%tpw%error * iv%ssmi_rv(n)%tpw%error)
  27
  28       if (iv%info(ssmi_rv)%proc_domain(1,n)) then
  29
  30          jo%ssmir_speed = jo%ssmir_speed - re%ssmi_rv(n)%speed * jo_grad_y%ssmi_rv(n)%speed
  31          jo%ssmir_tpw   = jo%ssmir_tpw   - re%ssmi_rv(n)%tpw   * jo_grad_y%ssmi_rv(n)%tpw
  32       end if
  33    end do
  34
  35    jo % ssmir_speed = 0.5 * jo % ssmir_speed
  36    jo % ssmir_tpw   = 0.5 * jo % ssmir_tpw
  37
  38    if (trace_use) call da_trace_exit("da_jo_and_grady_ssmi_rv")
  39
  40 end subroutine da_jo_and_grady_ssmi_rv
  41
  42