da_transform_xtoy_metar.inc
References to this file elsewhere.
1 subroutine da_transform_xtoy_metar (xa, xb, iv, xp, y)
2
3 !-----------------------------------------------------------------------
4 ! Purpose: TBD
5 !-----------------------------------------------------------------------
6
7 implicit none
8
9 type (x_type), intent(inout) :: xa ! gridded analysis increment.
10 type (xb_type), intent(in) :: xb ! first guess state.
11 type (ob_type), intent(in) :: iv ! Innovation vector (O-B).
12 type (xpose_type), intent(in) :: xp ! Domain decomposition vars.
13 type (y_type), intent(inout) :: y ! y = h (xa) (linear)
14
15 integer :: n ! Loop counter.
16 integer :: i, j ! Index dimension.
17 real :: dx, dxm !
18 real :: dy, dym !
19
20 if (trace_use) call da_trace_entry("da_transform_xtoy_metar")
21
22 if (iv%num_metar > 0) then
23
24 !xyh y%metar(:)%u = 0.0
25 !xyh y%metar(:)%v = 0.0
26 !xyh y%metar(:)%t = 0.0
27 !xyh y%metar(:)%p = 0.0
28 !xyh y%metar(:)%q = 0.0
29
30 if (sfc_assi_options == 1) then
31 do n=iv%ob_numb(iv%current_ob_time-1)%metar + 1, iv%ob_numb(iv%current_ob_time)%metar
32
33 ! [1.1] Get horizontal interpolation weights:
34
35 i = iv%metar(n)%loc%i
36 dy = iv%metar(n)%loc%dy
37 dym = iv%metar(n)%loc%dym
38 j = iv%metar(n)%loc%j
39 dx = iv%metar(n)%loc%dx
40 dxm = iv%metar(n)%loc%dxm
41
42 ! [1.2] Interpolate horizontally:
43 call da_interp_obs_lin_2d(xa % u, xp, i, j, dx, dy, dxm, dym, &
44 y%metar(n)%u, iv%metar(n)%zk)
45 call da_interp_obs_lin_2d(xa % v, xp, i, j, dx, dy, dxm, dym, &
46 y%metar(n)%v, iv%metar(n)%zk)
47 call da_interp_obs_lin_2d(xa % t, xp, i, j, dx, dy, dxm, dym, &
48 y%metar(n)%t, iv%metar(n)%zk)
49 call da_interp_obs_lin_2d(xa % q, xp, i, j, dx, dy, dxm, dym, &
50 y%metar(n)%q, iv%metar(n)%zk)
51
52 call da_interp_lin_2d(xa % psfc, xp%ims, xp%ime, xp%jms, xp%jme, &
53 i, j, dx, dy, dxm, dym, y%metar(n)%p)
54 end do
55 else if (sfc_assi_options == 2) then
56 ! [2.0] Surface assimilation approach 2
57 do n=iv%ob_numb(iv%current_ob_time-1)%metar + 1, iv%ob_numb(iv%current_ob_time)%metar
58 call da_transform_xtopsfc(xb,xa,xp,iv%metar(n),y%metar(n))
59 end do
60 end if
61 end if
62
63 if (trace_use) call da_trace_exit("da_transform_xtoy_metar")
64
65 end subroutine da_transform_xtoy_metar
66
67