| 1 |
guez |
52 |
|
| 2 |
|
|
SUBROUTINE cv_undilute1(len,nd,t,q,qs,gz,p,nk,icb,icbmax & |
| 3 |
|
|
,tp,tvp,clw) |
| 4 |
|
|
use cvthermo |
| 5 |
|
|
use cvparam |
| 6 |
|
|
implicit none |
| 7 |
|
|
|
| 8 |
|
|
|
| 9 |
|
|
! inputs: |
| 10 |
guez |
97 |
integer, intent(in):: len, nd |
| 11 |
guez |
52 |
integer nk(len), icb(len), icbmax |
| 12 |
|
|
real, intent(in):: t(len,nd) |
| 13 |
|
|
real q(len,nd), qs(len,nd), gz(len,nd) |
| 14 |
|
|
real p(len,nd) |
| 15 |
|
|
|
| 16 |
|
|
! outputs: |
| 17 |
|
|
real tp(len,nd), tvp(len,nd), clw(len,nd) |
| 18 |
|
|
|
| 19 |
|
|
! local variables: |
| 20 |
|
|
integer i, k |
| 21 |
|
|
real tg, qg, alv, s, ahg, tc, denom, es, rg |
| 22 |
|
|
real ah0(len), cpp(len) |
| 23 |
|
|
real tnk(len), qnk(len), gznk(len), ticb(len), gzicb(len) |
| 24 |
|
|
|
| 25 |
|
|
!------------------------------------------------------------------- |
| 26 |
|
|
! --- Calculates the lifted parcel virtual temperature at nk, |
| 27 |
|
|
! --- the actual temperature, and the adiabatic |
| 28 |
|
|
! --- liquid water content. The procedure is to solve the equation. |
| 29 |
|
|
! cp*tp+L*qp+phi=cp*tnk+L*qnk+gznk. |
| 30 |
|
|
!------------------------------------------------------------------- |
| 31 |
|
|
|
| 32 |
|
|
do 320 i=1,len |
| 33 |
|
|
tnk(i)=t(i,nk(i)) |
| 34 |
|
|
qnk(i)=q(i,nk(i)) |
| 35 |
|
|
gznk(i)=gz(i,nk(i)) |
| 36 |
|
|
ticb(i)=t(i,icb(i)) |
| 37 |
|
|
gzicb(i)=gz(i,icb(i)) |
| 38 |
|
|
320 continue |
| 39 |
|
|
! |
| 40 |
|
|
! *** Calculate certain parcel quantities, including static energy *** |
| 41 |
|
|
! |
| 42 |
|
|
do 330 i=1,len |
| 43 |
|
|
ah0(i)=(cpd*(1.-qnk(i))+cl*qnk(i))*tnk(i) & |
| 44 |
|
|
+qnk(i)*(lv0-clmcpv*(tnk(i)-273.15))+gznk(i) |
| 45 |
|
|
cpp(i)=cpd*(1.-qnk(i))+qnk(i)*cpv |
| 46 |
|
|
330 continue |
| 47 |
|
|
! |
| 48 |
|
|
! *** Calculate lifted parcel quantities below cloud base *** |
| 49 |
|
|
! |
| 50 |
|
|
do 350 k=minorig,icbmax-1 |
| 51 |
|
|
do 340 i=1,len |
| 52 |
|
|
tp(i,k)=tnk(i)-(gz(i,k)-gznk(i))/cpp(i) |
| 53 |
|
|
tvp(i,k)=tp(i,k)*(1.+qnk(i)*epsi) |
| 54 |
|
|
340 continue |
| 55 |
|
|
350 continue |
| 56 |
|
|
! |
| 57 |
|
|
! *** Find lifted parcel quantities above cloud base *** |
| 58 |
|
|
! |
| 59 |
|
|
do 360 i=1,len |
| 60 |
|
|
tg=ticb(i) |
| 61 |
|
|
qg=qs(i,icb(i)) |
| 62 |
|
|
alv=lv0-clmcpv*(ticb(i)-t0) |
| 63 |
|
|
! |
| 64 |
|
|
! First iteration. |
| 65 |
|
|
! |
| 66 |
|
|
s=cpd+alv*alv*qg/(rrv*ticb(i)*ticb(i)) |
| 67 |
|
|
s=1./s |
| 68 |
|
|
ahg=cpd*tg+(cl-cpd)*qnk(i)*ticb(i)+alv*qg+gzicb(i) |
| 69 |
|
|
tg=tg+s*(ah0(i)-ahg) |
| 70 |
|
|
tg=max(tg,35.0) |
| 71 |
|
|
tc=tg-t0 |
| 72 |
|
|
denom=243.5+tc |
| 73 |
|
|
if(tc.ge.0.0)then |
| 74 |
|
|
es=6.112*exp(17.67*tc/denom) |
| 75 |
|
|
else |
| 76 |
|
|
es=exp(23.33086-6111.72784/tg+0.15215*log(tg)) |
| 77 |
|
|
endif |
| 78 |
|
|
qg=eps*es/(p(i,icb(i))-es*(1.-eps)) |
| 79 |
|
|
! |
| 80 |
|
|
! Second iteration. |
| 81 |
|
|
! |
| 82 |
|
|
s=cpd+alv*alv*qg/(rrv*ticb(i)*ticb(i)) |
| 83 |
|
|
s=1./s |
| 84 |
|
|
ahg=cpd*tg+(cl-cpd)*qnk(i)*ticb(i)+alv*qg+gzicb(i) |
| 85 |
|
|
tg=tg+s*(ah0(i)-ahg) |
| 86 |
|
|
tg=max(tg,35.0) |
| 87 |
|
|
tc=tg-t0 |
| 88 |
|
|
denom=243.5+tc |
| 89 |
|
|
if(tc.ge.0.0)then |
| 90 |
|
|
es=6.112*exp(17.67*tc/denom) |
| 91 |
|
|
else |
| 92 |
|
|
es=exp(23.33086-6111.72784/tg+0.15215*log(tg)) |
| 93 |
|
|
end if |
| 94 |
|
|
qg=eps*es/(p(i,icb(i))-es*(1.-eps)) |
| 95 |
|
|
! |
| 96 |
|
|
alv=lv0-clmcpv*(ticb(i)-273.15) |
| 97 |
|
|
tp(i,icb(i))=(ah0(i)-(cl-cpd)*qnk(i)*ticb(i) & |
| 98 |
|
|
-gz(i,icb(i))-alv*qg)/cpd |
| 99 |
|
|
clw(i,icb(i))=qnk(i)-qg |
| 100 |
|
|
clw(i,icb(i))=max(0.0,clw(i,icb(i))) |
| 101 |
|
|
rg=qg/(1.-qnk(i)) |
| 102 |
|
|
tvp(i,icb(i))=tp(i,icb(i))*(1.+rg*epsi) |
| 103 |
|
|
360 continue |
| 104 |
|
|
! |
| 105 |
|
|
do 380 k=minorig,icbmax |
| 106 |
|
|
do 370 i=1,len |
| 107 |
|
|
tvp(i,k)=tvp(i,k)-tp(i,k)*qnk(i) |
| 108 |
|
|
370 continue |
| 109 |
|
|
380 continue |
| 110 |
|
|
! |
| 111 |
|
|
return |
| 112 |
|
|
end |
Parent Directory
| 
Revision Log