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<A NAME='DA_RESIDUAL_QSCAT'><A href='../../html_code/qscat/da_residual_qscat.inc.html#DA_RESIDUAL_QSCAT' TARGET='top_target'><IMG SRC="../../gif/bar_red.gif" border=0></A>
subroutine da_residual_qscat(iv, y, re, np_missing, np_bad_data,np_obs_used, np_available) 1,4
!-----------------------------------------------------------------------
! Purpose: Calculate residuals for qscat obs
!-----------------------------------------------------------------------
implicit none
type (iv_type), intent(in) :: iv ! Innovation vector (O-B).
type (y_type) , intent(in) :: y ! y = H (xa)
type (y_type) , intent(inout) :: re ! Residual vector (O-A).
integer , intent(inout) :: np_available
integer , intent(inout) :: np_obs_used
integer , intent(inout) :: np_missing
integer , intent(inout) :: np_bad_data
type (bad_data_type) :: n_obs_bad
integer :: n
if (trace_use_dull) call da_trace_entry
("da_residual_qscat")
n_obs_bad % u % num = number_type(0, 0, 0)
n_obs_bad % v % num = number_type(0, 0, 0)
do n=1, iv%info(qscat)%nlocal
np_available = np_available + 2
re%qscat(n)%u = da_residual(n, 0, y%qscat(n)%u, iv%qscat(n)%u, n_obs_bad % u)
re%qscat(n)%v = da_residual(n, 0, y%qscat(n)%v, iv%qscat(n)%v, n_obs_bad % v)
end do
np_missing = np_missing + n_obs_bad % u % num % miss + n_obs_bad % v % num % miss
np_bad_data = np_bad_data + n_obs_bad % u % num % bad + n_obs_bad % v % num % bad
np_obs_used = np_obs_used + n_obs_bad % u % num % use + n_obs_bad % v % num % use
if (trace_use_dull) call da_trace_exit("da_residual_qscat")
end subroutine da_residual_qscat