da_jo_and_grady_ssmi_rv.inc

1 subroutine da_jo_and_grady_ssmi_rv(oi, re, jo, jo_grad_y)
2 
3    !-----------------------------------------------------------------------
4    ! Purpose: TBD
5    !-----------------------------------------------------------------------
6 
7    implicit none
8 
9    type (ob_type), intent(in)   :: oi          ! 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    jo % ssmir_Speed=0.0
17    jo % ssmir_tpw=0.0
18 
19    do n=1, oi%num_ssmi_retrieval
20       jo_grad_y%ssmi_retrieval(n)%Speed = - re%ssmi_retrieval(n)%Speed / &
21                                            (oi%ssmi_retrieval(n)%Speed%error * &
22                                              oi%ssmi_retrieval(n)%Speed%error)
23 
24       jo_grad_y%ssmi_retrieval(n)%tpw = -re%ssmi_retrieval(n)%tpw / &
25                                          (oi%ssmi_retrieval(n)%tpw%error * &
26                                            oi%ssmi_retrieval(n)%tpw%error)
27 
28       if (oi%ssmi_retrieval(n)%loc%proc_domain) then
29 
30          jo % ssmir_Speed = jo % ssmir_Speed - &
31                         re%ssmi_retrieval(n)%Speed * &
32                         jo_grad_y%ssmi_retrieval(n)%Speed
33 
34         jo % ssmir_tpw = jo % ssmir_tpw - &
35                       re%ssmi_retrieval(n)%tpw * jo_grad_y%ssmi_retrieval(n)%tpw
36 
37       end if
38    end do
39    
40    jo % ssmir_Speed = 0.5 * jo % ssmir_Speed
41    jo % ssmir_tpw   = 0.5 * jo % ssmir_tpw
42 
43 end subroutine da_jo_and_grady_ssmi_rv
44 
45