da_jo_and_grady_ships.inc

1 subroutine da_jo_and_grady_ships(iv, re, jo, jo_grad_y)
2 
3    !-----------------------------------------------------------------------
4    ! Purpose: TBD
5    !-----------------------------------------------------------------------
6 
7    implicit none
8 
9    type (ob_type), intent(in)   :: iv          ! Innovation vector.
10    type (y_type), intent(in)    :: re          ! Residual vector.
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 % ships_u = 0.0
17    jo % ships_v = 0.0
18    jo % ships_t = 0.0
19    jo % ships_p = 0.0
20    jo % ships_q = 0.0
21 
22    if (iv%num_ships > 0) then
23       do n=1, iv%num_ships
24          jo_grad_y%ships(n)%u = -re%ships(n)%u / &
25                                  (iv%ships(n)%u%error * iv%ships(n)%u%error)
26          jo_grad_y%ships(n)%v = -re%ships(n)%v / &
27                                  (iv%ships(n)%v%error * iv%ships(n)%v%error)
28          jo_grad_y%ships(n)%t = -re%ships(n)%t / &
29                                  (iv%ships(n)%t%error * iv%ships(n)%t%error)
30          jo_grad_y%ships(n)%p = -re%ships(n)%p / &
31                                  (iv%ships(n)%p%error * iv%ships(n)%p%error)
32          jo_grad_y%ships(n)%q = -re%ships(n)%q / &
33                                  (iv%ships(n)%q%error * iv%ships(n)%q%error)
34 
35           if (iv%ships(n)%loc%proc_domain) then
36             jo % ships_u = jo % ships_u - re%ships(n)%u * jo_grad_y%ships(n)%u
37             jo % ships_v = jo % ships_v - re%ships(n)%v * jo_grad_y%ships(n)%v
38             jo % ships_t = jo % ships_t - re%ships(n)%t * jo_grad_y%ships(n)%t
39             jo % ships_p = jo % ships_p - re%ships(n)%p * jo_grad_y%ships(n)%p
40             jo % ships_q = jo % ships_q - re%ships(n)%q * jo_grad_y%ships(n)%q
41           end if
42       end do
43 
44       jo % ships_u = 0.5 * jo % ships_u
45       jo % ships_v = 0.5 * jo % ships_v
46       jo % ships_t = 0.5 * jo % ships_t
47       jo % ships_p = 0.5 * jo % ships_p
48       jo % ships_q = 0.5 * jo % ships_q
49    end if
50      
51 end subroutine da_jo_and_grady_ships
52 
53