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Code cleanup

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Bill Ladwig 9 years ago
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66881a1ad0
1 changed files with 125 additions and 134 deletions
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  1. 97
      wrf_open/var/src/python/wrf/var/wrfcape.f90

97
wrf_open/var/src/python/wrf/var/wrfcape.f90
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@ -289,24 +289,22 @@ SUBROUTINE f_computecape(prs,tmk,qvp,ght,ter,sfp,cape,cin,&
cape(i,j,1) = 0.d0 cape(i,j,1) = 0.d0
cin(i,j,1) = 0.d0 cin(i,j,1) = 0.d0
IF (i3dflag.eq.1) THEN IF (i3dflag .EQ. 1) THEN
kpar1 = 2 kpar1 = 2
kpar2 = mkzh kpar2 = mkzh
ELSE ELSE
! find parcel with max theta-e in lowest 3 km agl. ! find parcel with max theta-e in lowest 3 km agl.
ethmax = -1.d0 ethmax = -1.d0
DO k = mkzh,1,-1 DO k = mkzh,1,-1
IF (ght(i,j,k)-ter(i,j).lt.3000.d0) then IF (ght(i,j,k)-ter(i,j) .LT. 3000.d0) THEN
q = MAX(qvp(i,j,k), 1.d-15) q = MAX(qvp(i,j,k), 1.d-15)
t = tmk(i,j,k) t = tmk(i,j,k)
p = prs(i,j,k) p = prs(i,j,k)
e = q*p/(EPS + q) e = q*p/(EPS + q)
tlcl = TLCLC1/ (log(t**TLCLC2/e)-TLCLC3) + TLCLC4 tlcl = TLCLC1/ (LOG(t**TLCLC2/e)-TLCLC3) + TLCLC4
eth = t * (1000.d0/p)**(GAMMA*(1.d0 + GAMMAMD*q))*& eth = t * (1000.d0/p)**(GAMMA*(1.d0 + GAMMAMD*q))*&
EXP((THTECON1/tlcl - THTECON2)*q*(1.d0 + THTECON3*q)) EXP((THTECON1/tlcl - THTECON2)*q*(1.d0 + THTECON3*q))
IF (eth.gt.ethmax) then IF (eth .GT. ethmax) THEN
klev = k klev = k
ethmax = eth ethmax = eth
END IF END IF
@ -315,7 +313,7 @@ SUBROUTINE f_computecape(prs,tmk,qvp,ght,ter,sfp,cape,cin,&
kpar1 = klev kpar1 = klev
kpar2 = klev kpar2 = klev
! establish average properties of that parcel ! Establish average properties of that parcel
! (over depth of approximately davg meters) ! (over depth of approximately davg meters)
! davg=.1 ! davg=.1
@ -328,8 +326,8 @@ SUBROUTINE f_computecape(prs,tmk,qvp,ght,ter,sfp,cape,cin,&
totqvp = 0.d0 totqvp = 0.d0
totprs = 0.d0 totprs = 0.d0
DO k = mkzh,2,-1 DO k = mkzh,2,-1
IF (prsf(i,j,k).le.p1) GOTO 35 IF (prsf(i,j,k) .LE. p1) GOTO 35
IF (prsf(i,j,k-1).ge.p2) GOTO 34 IF (prsf(i,j,k-1) .GE. p2) GOTO 34
p = prs(i,j,k) p = prs(i,j,k)
pup = prsf(i,j,k) pup = prsf(i,j,k)
pdn = prsf(i,j,k-1) pdn = prsf(i,j,k-1)
@ -337,7 +335,7 @@ SUBROUTINE f_computecape(prs,tmk,qvp,ght,ter,sfp,cape,cin,&
th = tmk(i,j,k)*(1000.d0/p)**(GAMMA*(1.d0 + GAMMAMD*q)) th = tmk(i,j,k)*(1000.d0/p)**(GAMMA*(1.d0 + GAMMAMD*q))
pp1 = MAX(p1,pdn) pp1 = MAX(p1,pdn)
pp2 = MIN(p2,pup) pp2 = MIN(p2,pup)
IF (pp2.gt.pp1) then IF (pp2 .GT. pp1) THEN
deltap = pp2 - pp1 deltap = pp2 - pp1
totqvp = totqvp + q*deltap totqvp = totqvp + q*deltap
totthe = totthe + th*deltap totthe = totthe + th*deltap
@ -353,10 +351,10 @@ SUBROUTINE f_computecape(prs,tmk,qvp,ght,ter,sfp,cape,cin,&
DO kpar = kpar1,kpar2 DO kpar = kpar1,kpar2
! calculate temperature and moisture properties of parcel ! Calculate temperature and moisture properties of parcel
! (note, qvppari and tmkpari already calculated above for 2d case.) ! (note, qvppari and tmkpari already calculated above for 2d case.)
IF (i3dflag.eq.1) then IF (i3dflag .EQ. 1) THEN
qvppari = qvp(i,j,kpar) qvppari = qvp(i,j,kpar)
tmkpari = tmk(i,j,kpar) tmkpari = tmk(i,j,kpar)
END IF END IF
@ -371,35 +369,34 @@ SUBROUTINE f_computecape(prs,tmk,qvp,ght,ter,sfp,cape,cin,&
EXP((THTECON1/tlcl - THTECON2)*qvppari*(1.d0 + THTECON3*qvppari)) EXP((THTECON1/tlcl - THTECON2)*qvppari*(1.d0 + THTECON3*qvppari))
zlcl = ghtpari + (tmkpari - tlcl)/(GRAV/cpm) zlcl = ghtpari + (tmkpari - tlcl)/(GRAV/cpm)
! calculate buoyancy and relative height of lifted parcel at ! Calculate buoyancy and relative height of lifted parcel at
! all levels, and store in bottom up arrays. add a level at the lcl, ! all levels, and store in bottom up arrays. add a level at the lcl,
! and at all points where buoyancy is zero. ! and at all points where buoyancy is zero.
! !
! for arrays that go bottom to top ! For arrays that go bottom to top
kk = 0 kk = 0
ilcl = 0 ilcl = 0
IF (ghtpari.ge.zlcl) THEN
! initial parcel already saturated or supersaturated.
IF (ghtpari .GE. zlcl) THEN
! Initial parcel already saturated or supersaturated.
ilcl = 2 ilcl = 2
klcl = 1 klcl = 1
END IF END IF
DO k = kpar,1,-1 DO k = kpar,1,-1
! for arrays that go bottom to top ! For arrays that go bottom to top
33 kk = kk + 1 33 kk = kk + 1
! model level is below lcl
! Model level is below lcl
IF (ght(i,j,k).lt.zlcl) THEN IF (ght(i,j,k).lt.zlcl) THEN
qvplift = qvppari qvplift = qvppari
tmklift = tmkpari - GRAV/cpm*(ght(i,j,k) - ghtpari) tmklift = tmkpari - GRAV/cpm*(ght(i,j,k) - ghtpari)
tvenv = tvirtual(tmk(i,j,k), qvp(i,j,k)) tvenv = tvirtual(tmk(i,j,k), qvp(i,j,k))
tvlift = tvirtual(tmklift, qvplift) tvlift = tvirtual(tmklift, qvplift)
ghtlift = ght(i,j,k) ghtlift = ght(i,j,k)
ELSE IF (ght(i,j,k).ge.zlcl .and. ilcl.eq.0) THEN ELSE IF (ght(i,j,k) .GE. zlcl .AND. ilcl .EQ. 0) THEN
! This model level and previous model level straddle the lcl,
! this model level and previous model level straddle the lcl,
! so first create a new level in the bottom-up array, at the lcl. ! so first create a new level in the bottom-up array, at the lcl.
tmklift = tlcl tmklift = tlcl
qvplift = qvppari qvplift = qvppari
facden = ght(i,j,k) - ght(i,j,k+1) facden = ght(i,j,k) - ght(i,j,k+1)
@ -411,79 +408,74 @@ SUBROUTINE f_computecape(prs,tmk,qvp,ght,ter,sfp,cape,cin,&
tvlift = tvirtual(tmklift, qvplift) tvlift = tvirtual(tmklift, qvplift)
ghtlift = zlcl ghtlift = zlcl
ilcl = 1 ilcl = 1
ELSE ELSE
tmklift = tonpsadiabat(ethpari,prs(i,j,k),PSADITHTE,PSADIPRS,PSADITMK,GAMMA,throw_exception) tmklift = tonpsadiabat(ethpari, prs(i,j,k), PSADITHTE, PSADIPRS,&
PSADITMK, GAMMA, throw_exception)
eslift = EZERO*exp(ESLCON1* (tmklift-CELKEL)/(tmklift-ESLCON2)) eslift = EZERO*EXP(ESLCON1*(tmklift - CELKEL)/(tmklift - ESLCON2))
qvplift = EPS*eslift/(prs(i,j,k) - eslift) qvplift = EPS*eslift/(prs(i,j,k) - eslift)
tvenv = tvirtual(tmk(i,j,k), qvp(i,j,k)) tvenv = tvirtual(tmk(i,j,k), qvp(i,j,k))
tvlift = tvirtual(tmklift, qvplift) tvlift = tvirtual(tmklift, qvplift)
ghtlift = ght(i,j,k) ghtlift = ght(i,j,k)
END IF END IF
! buoyancy ! Buoyancy
buoy(kk) = GRAV*(tvlift - tvenv)/tvenv buoy(kk) = GRAV*(tvlift - tvenv)/tvenv
zrel(kk) = ghtlift - ghtpari zrel(kk) = ghtlift - ghtpari
IF ((kk.gt.1).and.(buoy(kk)*buoy(kk-1).lt.0.0d0)) THEN IF ((kk .GT. 1) .AND. (buoy(kk)*buoy(kk-1) .LT. 0.0d0)) THEN
! Parcel ascent curve crosses sounding curve, so create a new level
! parcel ascent curve crosses sounding curve, so create a new level
! in the bottom-up array at the crossing. ! in the bottom-up array at the crossing.
kk = kk + 1 kk = kk + 1
buoy(kk) = buoy(kk-1) buoy(kk) = buoy(kk-1)
zrel(kk) = zrel(kk-1) zrel(kk) = zrel(kk-1)
buoy(kk-1) = 0.d0 buoy(kk-1) = 0.d0
zrel(kk-1) = zrel(kk-2) + buoy(kk-2)/& zrel(kk-1) = zrel(kk-2) + buoy(kk-2)/&
(buoy(kk-2) - buoy(kk))*(zrel(kk) - zrel(kk-2)) (buoy(kk-2) - buoy(kk))*(zrel(kk) - zrel(kk-2))
END IF END IF
IF (ilcl.eq.1) THEN IF (ilcl .EQ. 1) THEN
klcl = kk klcl = kk
ilcl = 2 ilcl = 2
GOTO 33 GOTO 33
END IF END IF
END DO END DO
kmax = kk kmax = kk
IF (kmax.gt.150) THEN IF (kmax .GT. 150) THEN
! Need an exception here ! Need an exception here
CALL throw_exception('capecalc3d: kmax got too big. kmax=',kmax) CALL throw_exception('capecalc3d: kmax got too big. kmax=',kmax)
!STOP !STOP
END IF END IF
! if no lcl was found, set klcl to kmax. it is probably not really ! If no lcl was found, set klcl to kmax. it is probably not really
! at kmax, but this will make the rest of the routine behave ! at kmax, but this will make the rest of the routine behave
! properly. ! properly.
IF (ilcl .EQ. 0) klcl=kmax
IF (ilcl.eq.0) klcl=kmax ! Get the accumulated buoyant energy from the parcel's starting
! get the accumulated buoyant energy from the parcel's starting
! point, at all levels up to the top level. ! point, at all levels up to the top level.
benaccum(1) = 0.0d0 benaccum(1) = 0.0d0
benamin = 9d9 benamin = 9d9
DO k = 2,kmax DO k = 2,kmax
dz = zrel(k) - zrel(k-1) dz = zrel(k) - zrel(k-1)
benaccum(k) = benaccum(k-1) + .5d0*dz*(buoy(k-1) + buoy(k)) benaccum(k) = benaccum(k-1) + .5d0*dz*(buoy(k-1) + buoy(k))
IF (benaccum(k).lt.benamin) then IF (benaccum(k) .LT. benamin) THEN
benamin = benaccum(k) benamin = benaccum(k)
END IF END IF
END DO END DO
! determine equilibrium level (el), which we define as the highest ! Determine equilibrium level (el), which we define as the highest
! level of non-negative buoyancy above the lcl. note, this may be ! level of non-negative buoyancy above the lcl. note, this may be
! the top level if the parcel is still buoyant there. ! the top level if the parcel is still buoyant there.
DO k = kmax,klcl,-1 DO k = kmax,klcl,-1
IF (buoy(k).ge.0.d0) THEN IF (buoy(k) .GE. 0.d0) THEN
! k of equilibrium level ! k of equilibrium level
kel = k kel = k
GOTO 50 GOTO 50
END IF END IF
END DO END DO
! if we got through that loop, then there is no non-negative ! If we got through that loop, then there is no non-negative
! buoyancy above the lcl in the sounding. in these situations, ! buoyancy above the lcl in the sounding. in these situations,
! both cape and cin will be set to -0.1 j/kg. (see below about ! both cape and cin will be set to -0.1 j/kg. (see below about
! missing values in v6.1.0). also, where cape is ! missing values in v6.1.0). also, where cape is
@ -491,7 +483,7 @@ SUBROUTINE f_computecape(prs,tmk,qvp,ght,ter,sfp,cape,cin,&
! that the zero contour in either the cin or cape fields will ! that the zero contour in either the cin or cape fields will
! circumscribe regions of non-zero cape. ! circumscribe regions of non-zero cape.
! in v6.1.0 of ncl, we added a _fillvalue attribute to the return ! In v6.1.0 of ncl, we added a _fillvalue attribute to the return
! value of this function. at that time we decided to change -0.1 ! value of this function. at that time we decided to change -0.1
! to a more appropriate missing value, which is passed into this ! to a more appropriate missing value, which is passed into this
! routine as cmsg. ! routine as cmsg.
@ -506,7 +498,7 @@ SUBROUTINE f_computecape(prs,tmk,qvp,ght,ter,sfp,cape,cin,&
50 CONTINUE 50 CONTINUE
! if there is an equilibrium level, then cape is positive. we'll ! If there is an equilibrium level, then cape is positive. we'll
! define the level of free convection (lfc) as the point below the ! define the level of free convection (lfc) as the point below the
! el, but at or above the lcl, where accumulated buoyant energy is a ! el, but at or above the lcl, where accumulated buoyant energy is a
! minimum. the net positive area (accumulated buoyant energy) from ! minimum. the net positive area (accumulated buoyant energy) from
@ -515,18 +507,17 @@ SUBROUTINE f_computecape(prs,tmk,qvp,ght,ter,sfp,cape,cin,&
! parcel starting point to the lfc will be defined as the convective ! parcel starting point to the lfc will be defined as the convective
! inhibition (cin). ! inhibition (cin).
! first get the lfc according to the above definition. ! First get the lfc according to the above definition.
benamin = 9d9 benamin = 9d9
klfc = kmax klfc = kmax
DO k = klcl,kel DO k = klcl,kel
IF (benaccum(k).lt.benamin) THEN IF (benaccum(k) .LT. benamin) THEN
benamin = benaccum(k) benamin = benaccum(k)
klfc = k klfc = k
END IF END IF
END DO END DO
! now we can assign values to cape and cin ! Now we can assign values to cape and cin
cape(i,j,kpar) = MAX(benaccum(kel)-benamin, 0.1d0) cape(i,j,kpar) = MAX(benaccum(kel)-benamin, 0.1d0)
cin(i,j,kpar) = MAX(-benamin, 0.1d0) cin(i,j,kpar) = MAX(-benamin, 0.1d0)
@ -535,18 +526,18 @@ SUBROUTINE f_computecape(prs,tmk,qvp,ght,ter,sfp,cape,cin,&
! cin to -0.1 (see note about missing values in v6.1.0) in ! cin to -0.1 (see note about missing values in v6.1.0) in
! that case. ! that case.
! in v6.1.0 of ncl, we added a _fillvalue attribute to the return ! In v6.1.0 of ncl, we added a _fillvalue attribute to the return
! value of this function. at that time we decided to change -0.1 ! value of this function. at that time we decided to change -0.1
! to a more appropriate missing value, which is passed into this ! to a more appropriate missing value, which is passed into this
! routine as cmsg. ! routine as cmsg.
! IF (cape(i,j,kpar).lt.100.d0) cin(i,j,kpar) = -0.1d0 ! IF (cape(i,j,kpar).lt.100.d0) cin(i,j,kpar) = -0.1d0
IF (cape(i,j,kpar).lt.100.d0) cin(i,j,kpar) = cmsg IF (cape(i,j,kpar) .LT. 100.d0) cin(i,j,kpar) = cmsg
102 CONTINUE 102 CONTINUE
END DO END DO
IF (i3dflag.eq.0) THEN IF (i3dflag .EQ. 0) THEN
cape(i,j,mkzh) = cape(i,j,kpar1) cape(i,j,mkzh) = cape(i,j,kpar1)
cin(i,j,mkzh) = cin(i,j,kpar1) cin(i,j,mkzh) = cin(i,j,kpar1)
! meters agl ! meters agl

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