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bugfix - do not exceed index if h_press.ge.z(nlev) #28

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bugfix - do not exceed index if h_press.ge.z(nlev) #28

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25 changes: 15 additions & 10 deletions src/meanflow/extpressure.F90
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Original file line number Diff line number Diff line change
Expand Up @@ -33,7 +33,7 @@ subroutine extpressure(method,nlev)
! For details of this method, see \cite{Burchard99}.
!
! !USES:
use meanflow, only: u,v,h
use meanflow, only: u,v,h,z
use observations, only: dpdx,dpdy,h_press
!
IMPLICIT NONE
Expand All @@ -54,22 +54,27 @@ subroutine extpressure(method,nlev)
!
! !LOCAL VARIABLES:
integer :: i
REALTYPE :: z(0:nlev)
REALTYPE :: rat,uint,vint,hint
!
!-----------------------------------------------------------------------
!BOC
select case (method)
case (1)
! current measurement at h_press above bed
z(1)=0.5*h(1)
i =0
222 i=i+1
z(i+1)=z(i)+0.5*(h(i)+h(i+1))
if ((z(i+1).lt.h_press%value).and.(i.lt.nlev)) goto 222
rat=(h_press%value-z(i))/(z(i+1)-z(i))
uint=rat*u(i+1)+(1-rat)*u(i)
vint=rat*v(i+1)+(1-rat)*v(i)
do i=1,nlev
if ( h_press%value .lt. z(i) ) exit
end do
if (i .eq. 1) then
uint = u(1)
vint = v(1)
else if ( i .eq. nlev+1 ) then
uint = u(nlev)
vint = v(nlev)
else
rat = (h_press%value-z(i-1))/(z(i)-z(i-1))
uint = rat*u(i) + (1-rat)*u(i-1)
vint = rat*v(i) + (1-rat)*v(i-1)
end if
do i=1,nlev
u(i)=u(i)+dpdx%value-uint
v(i)=v(i)+dpdy%value-vint
Expand Down