1 |
|
2 |
SUBROUTINE cv3_feed(len,nd,t,q,qs,p,ph,hm,gz & |
3 |
,nk,icb,icbmax,iflag,tnk,qnk,gznk,plcl) |
4 |
use cvparam3 |
5 |
implicit none |
6 |
|
7 |
!================================================================ |
8 |
! Purpose: CONVECTIVE FEED |
9 |
! |
10 |
! Main differences with cv_feed: |
11 |
! - ph added in input |
12 |
! - here, nk(i)=minorig |
13 |
! - icb defined differently (plcl compared with ph instead of p) |
14 |
! |
15 |
! Main differences with convect3: |
16 |
! - we do not compute dplcldt and dplcldr of CLIFT anymore |
17 |
! - values iflag different (but tests identical) |
18 |
! - A,B explicitely defined (!...) |
19 |
!================================================================ |
20 |
|
21 |
|
22 |
! inputs: |
23 |
integer len, nd |
24 |
real t(len,nd), q(len,nd), qs(len,nd), p(len,nd) |
25 |
real hm(len,nd), gz(len,nd) |
26 |
real ph(len,nd+1) |
27 |
|
28 |
! outputs: |
29 |
integer iflag(len), nk(len), icb(len), icbmax |
30 |
real tnk(len), qnk(len), gznk(len), plcl(len) |
31 |
|
32 |
! local variables: |
33 |
integer i, k |
34 |
integer ihmin(len) |
35 |
real work(len) |
36 |
real pnk(len), qsnk(len), rh(len), chi(len) |
37 |
real A, B ! convect3 |
38 |
!ym |
39 |
plcl=0.0 |
40 |
!@ !------------------------------------------------------------------- |
41 |
!@ ! --- Find level of minimum moist static energy |
42 |
!@ ! --- If level of minimum moist static energy coincides with |
43 |
!@ ! --- or is lower than minimum allowable parcel origin level, |
44 |
!@ ! --- set iflag to 6. |
45 |
!@ !------------------------------------------------------------------- |
46 |
!@ |
47 |
!@ do 180 i=1,len |
48 |
!@ work(i)=1.0e12 |
49 |
!@ ihmin(i)=nl |
50 |
!@ 180 continue |
51 |
!@ do 200 k=2,nlp |
52 |
!@ do 190 i=1,len |
53 |
!@ if((hm(i,k).lt.work(i)).and. |
54 |
!@ & (hm(i,k).lt.hm(i,k-1)))then |
55 |
!@ work(i)=hm(i,k) |
56 |
!@ ihmin(i)=k |
57 |
!@ endif |
58 |
!@ 190 continue |
59 |
!@ 200 continue |
60 |
!@ do 210 i=1,len |
61 |
!@ ihmin(i)=min(ihmin(i),nlm) |
62 |
!@ if(ihmin(i).le.minorig)then |
63 |
!@ iflag(i)=6 |
64 |
!@ endif |
65 |
!@ 210 continue |
66 |
!@ c |
67 |
!@ !------------------------------------------------------------------- |
68 |
!@ ! --- Find that model level below the level of minimum moist static |
69 |
!@ ! --- energy that has the maximum value of moist static energy |
70 |
!@ !------------------------------------------------------------------- |
71 |
!@ |
72 |
!@ do 220 i=1,len |
73 |
!@ work(i)=hm(i,minorig) |
74 |
!@ nk(i)=minorig |
75 |
!@ 220 continue |
76 |
!@ do 240 k=minorig+1,nl |
77 |
!@ do 230 i=1,len |
78 |
!@ if((hm(i,k).gt.work(i)).and.(k.le.ihmin(i)))then |
79 |
!@ work(i)=hm(i,k) |
80 |
!@ nk(i)=k |
81 |
!@ endif |
82 |
!@ 230 continue |
83 |
!@ 240 continue |
84 |
|
85 |
!------------------------------------------------------------------- |
86 |
! --- Origin level of ascending parcels for convect3: |
87 |
!------------------------------------------------------------------- |
88 |
|
89 |
do 220 i=1,len |
90 |
nk(i)=minorig |
91 |
220 continue |
92 |
|
93 |
!------------------------------------------------------------------- |
94 |
! --- Check whether parcel level temperature and specific humidity |
95 |
! --- are reasonable |
96 |
!------------------------------------------------------------------- |
97 |
do 250 i=1,len |
98 |
if( ( ( t(i,nk(i)).lt.250.0 ) & |
99 |
.or.( q(i,nk(i)).le.0.0 ) ) & |
100 |
.and. & |
101 |
( iflag(i).eq.0) ) iflag(i)=7 |
102 |
250 continue |
103 |
!------------------------------------------------------------------- |
104 |
! --- Calculate lifted condensation level of air at parcel origin level |
105 |
! --- (Within 0.2% of formula of Bolton, MON. WEA. REV.,1980) |
106 |
!------------------------------------------------------------------- |
107 |
|
108 |
A = 1669.0 ! convect3 |
109 |
B = 122.0 ! convect3 |
110 |
|
111 |
do 260 i=1,len |
112 |
|
113 |
if (iflag(i).ne.7) then ! modif sb Jun7th 2002 |
114 |
|
115 |
tnk(i)=t(i,nk(i)) |
116 |
qnk(i)=q(i,nk(i)) |
117 |
gznk(i)=gz(i,nk(i)) |
118 |
pnk(i)=p(i,nk(i)) |
119 |
qsnk(i)=qs(i,nk(i)) |
120 |
! |
121 |
rh(i)=qnk(i)/qsnk(i) |
122 |
! ori rh(i)=min(1.0,rh(i)) ! removed for convect3 |
123 |
! ori chi(i)=tnk(i)/(1669.0-122.0*rh(i)-tnk(i)) |
124 |
chi(i)=tnk(i)/(A-B*rh(i)-tnk(i)) ! convect3 |
125 |
plcl(i)=pnk(i)*(rh(i)**chi(i)) |
126 |
if(((plcl(i).lt.200.0).or.(plcl(i).ge.2000.0)) & |
127 |
.and.(iflag(i).eq.0))iflag(i)=8 |
128 |
|
129 |
endif ! iflag=7 |
130 |
|
131 |
260 continue |
132 |
|
133 |
!------------------------------------------------------------------- |
134 |
! --- Calculate first level above lcl (=icb) |
135 |
!------------------------------------------------------------------- |
136 |
|
137 |
!@ do 270 i=1,len |
138 |
!@ icb(i)=nlm |
139 |
!@ 270 continue |
140 |
!@c |
141 |
!@ do 290 k=minorig,nl |
142 |
!@ do 280 i=1,len |
143 |
!@ if((k.ge.(nk(i)+1)).and.(p(i,k).lt.plcl(i))) |
144 |
!@ & icb(i)=min(icb(i),k) |
145 |
!@ 280 continue |
146 |
!@ 290 continue |
147 |
!@c |
148 |
!@ do 300 i=1,len |
149 |
!@ if((icb(i).ge.nlm).and.(iflag(i).eq.0))iflag(i)=9 |
150 |
!@ 300 continue |
151 |
|
152 |
do 270 i=1,len |
153 |
icb(i)=nlm |
154 |
270 continue |
155 |
! |
156 |
! la modification consiste a comparer plcl a ph et non a p: |
157 |
! icb est defini par : ph(icb)<plcl<ph(icb-1) |
158 |
!@ do 290 k=minorig,nl |
159 |
do 290 k=3,nl-1 ! modif pour que icb soit sup/egal a 2 |
160 |
do 280 i=1,len |
161 |
if( ph(i,k).lt.plcl(i) ) icb(i)=min(icb(i),k) |
162 |
280 continue |
163 |
290 continue |
164 |
! |
165 |
do 300 i=1,len |
166 |
!@ if((icb(i).ge.nlm).and.(iflag(i).eq.0))iflag(i)=9 |
167 |
if((icb(i).eq.nlm).and.(iflag(i).eq.0))iflag(i)=9 |
168 |
300 continue |
169 |
|
170 |
do 400 i=1,len |
171 |
icb(i) = icb(i)-1 ! icb sup ou egal a 2 |
172 |
400 continue |
173 |
! |
174 |
! Compute icbmax. |
175 |
! |
176 |
icbmax=2 |
177 |
do 310 i=1,len |
178 |
!! icbmax=max(icbmax,icb(i)) |
179 |
if (iflag(i).lt.7) icbmax=max(icbmax,icb(i)) ! sb Jun7th02 |
180 |
310 continue |
181 |
|
182 |
return |
183 |
end |