1 |
module cv3_feed_m |
2 |
|
3 |
implicit none |
4 |
|
5 |
contains |
6 |
|
7 |
SUBROUTINE cv3_feed(len, nd, t, q, qs, p, ph, gz, nk, icb, icbmax, iflag, & |
8 |
tnk, qnk, gznk, plcl) |
9 |
|
10 |
! Purpose: CONVECTIVE FEED |
11 |
|
12 |
! Main differences with cv_feed: |
13 |
! - ph added in input |
14 |
! - here, nk(i)=minorig |
15 |
! - icb defined differently (plcl compared with ph instead of p) |
16 |
|
17 |
! Main differences with convect3: |
18 |
! - we do not compute dplcldt and dplcldr of CLIFT anymore |
19 |
! - values iflag different (but tests identical) |
20 |
! - A, B explicitely defined (!) |
21 |
|
22 |
use cv3_param_m |
23 |
|
24 |
! inputs: |
25 |
integer, intent(in):: len, nd |
26 |
real, intent(in):: t(len, nd) |
27 |
real, intent(in):: q(len, nd), qs(len, nd), p(len, nd) |
28 |
real gz(len, nd) |
29 |
real, intent(in):: ph(len, nd+1) |
30 |
|
31 |
! outputs: |
32 |
integer iflag(len) |
33 |
integer, intent(out):: nk(len), icb(len), icbmax |
34 |
real tnk(len), qnk(len), gznk(len), plcl(len) |
35 |
|
36 |
! local variables: |
37 |
integer i, k |
38 |
real pnk(len), qsnk(len), rh(len), chi(len) |
39 |
real A, B ! convect3 |
40 |
|
41 |
!-------------------------------------------------------------------- |
42 |
|
43 |
plcl=0.0 |
44 |
|
45 |
! --- Origin level of ascending parcels for convect3: |
46 |
|
47 |
do i=1, len |
48 |
nk(i)=minorig |
49 |
end do |
50 |
|
51 |
! --- Check whether parcel level temperature and specific humidity |
52 |
! --- are reasonable |
53 |
|
54 |
do i=1, len |
55 |
if ((t(i, nk(i)) < 250. .or. q(i, nk(i)) <= 0.) .and. iflag(i) == 0) & |
56 |
iflag(i)=7 |
57 |
end do |
58 |
|
59 |
! --- Calculate lifted condensation level of air at parcel origin level |
60 |
! --- (Within 0.2% of formula of Bolton, MON. WEA. REV., 1980) |
61 |
|
62 |
A = 1669.0 ! convect3 |
63 |
B = 122.0 ! convect3 |
64 |
|
65 |
do i=1, len |
66 |
if (iflag(i).ne.7) then |
67 |
tnk(i)=t(i, nk(i)) |
68 |
qnk(i)=q(i, nk(i)) |
69 |
gznk(i)=gz(i, nk(i)) |
70 |
pnk(i)=p(i, nk(i)) |
71 |
qsnk(i)=qs(i, nk(i)) |
72 |
|
73 |
rh(i)=qnk(i)/qsnk(i) |
74 |
chi(i)=tnk(i)/(A-B*rh(i)-tnk(i)) ! convect3 |
75 |
plcl(i)=pnk(i)*(rh(i)**chi(i)) |
76 |
if ((plcl(i) < 200. .or. plcl(i) >= 2000.) .and. iflag(i) == 0) & |
77 |
iflag(i) = 8 |
78 |
endif |
79 |
end do |
80 |
|
81 |
! --- Calculate first level above lcl (=icb) |
82 |
|
83 |
do i=1, len |
84 |
icb(i)=nlm |
85 |
end do |
86 |
|
87 |
! la modification consiste a comparer plcl a ph et non a p: |
88 |
! icb est defini par : ph(icb) < plcl < ph(icb - 1) |
89 |
do k=3, nl-1 ! modification pour que icb soit supérieur ou égal à 2 |
90 |
do i=1, len |
91 |
if(ph(i, k) < plcl(i)) icb(i) = min(icb(i), k) |
92 |
end do |
93 |
end do |
94 |
|
95 |
do i=1, len |
96 |
if((icb(i) == nlm).and.(iflag(i) == 0))iflag(i)=9 |
97 |
end do |
98 |
|
99 |
do i=1, len |
100 |
icb(i) = icb(i)-1 ! icb sup ou egal a 2 |
101 |
end do |
102 |
|
103 |
! Compute icbmax. |
104 |
|
105 |
icbmax=2 |
106 |
do i=1, len |
107 |
if (iflag(i) < 7) icbmax=max(icbmax, icb(i)) ! sb Jun7th02 |
108 |
end do |
109 |
|
110 |
end SUBROUTINE cv3_feed |
111 |
|
112 |
end module cv3_feed_m |