/[lmdze]/trunk/Sources/phylmd/CV30_routines/cv30_feed.f
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Contents of /trunk/Sources/phylmd/CV30_routines/cv30_feed.f

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Revision 197 - (show annotations)
Tue May 24 12:25:29 2016 UTC (8 years ago) by guez
File size: 2615 byte(s)
Clarified the computation of sigt in cv30_unsat. Replacing pr2 by 1 -
pr1 changes the results.

1 module cv30_feed_m
2
3 implicit none
4
5 contains
6
7 SUBROUTINE cv30_feed(t1, q1, qs1, p1, ph1, gz1, nk1, icb1, iflag1, tnk1, &
8 qnk1, gznk1, plcl1)
9
10 ! Purpose: convective feed
11
12 use cv30_param_m, only: minorig, nl
13 USE dimphy, ONLY: klev, klon
14 use numer_rec_95, only: locate
15
16 real, intent(in):: t1(:, :) ! (klon, klev)
17 real, intent(in):: q1(:, :), qs1(:, :), p1(:, :) ! (klon, klev)
18 real, intent(in):: ph1(:, :) ! (klon, klev+1)
19 real, intent(in):: gz1(:, :) ! (klon, klev)
20
21 ! outputs:
22
23 integer, intent(out):: nk1(:) ! (klon)
24
25 integer, intent(out):: icb1(:) ! (klon)
26 ! first level above lcl, 2 <= icb1 <= nl - 2
27
28 integer, intent(out):: iflag1(:) ! (klon)
29 real tnk1(klon), qnk1(klon), gznk1(klon)
30 real, intent(out):: plcl1(klon)
31
32 ! Local:
33 integer i
34 real pnk(klon), qsnk(klon), rh(klon), chi(klon)
35 real, parameter:: A = 1669., B = 122.
36
37 !--------------------------------------------------------------------
38
39 iflag1 = 0
40 plcl1 = 0.
41
42 ! Origin level of ascending parcels
43 nk1 = minorig
44
45 ! Check whether parcel level temperature and specific humidity
46 ! are reasonable
47
48 do i = 1, klon
49 if (t1(i, nk1(i)) < 250. .or. q1(i, nk1(i)) <= 0.) iflag1(i) = 7
50 end do
51
52 ! Calculate lifted condensation level of air at parcel origin level
53 ! (within 0.2 % of formula of Bolton, Mon. Wea. Rev., 1980)
54
55 do i = 1, klon
56 if (iflag1(i) == 0) then
57 tnk1(i) = t1(i, nk1(i))
58 qnk1(i) = q1(i, nk1(i))
59 gznk1(i) = gz1(i, nk1(i))
60 pnk(i) = p1(i, nk1(i))
61 qsnk(i) = qs1(i, nk1(i))
62
63 rh(i) = qnk1(i) / qsnk(i)
64 chi(i) = tnk1(i) / (A - B*rh(i) - tnk1(i))
65 plcl1(i) = pnk(i)*(rh(i)**chi(i))
66 if (plcl1(i) < 200. .or. plcl1(i) >= 2000.) iflag1(i) = 8
67 endif
68 end do
69
70 ! Compute icb1:
71 do i = 1, klon
72 if (plcl1(i) <= ph1(i, nl - 2)) then
73 ! Distinguish this case just so that icb1 = nl - 2, not nl =
74 ! 3, for plcl1 exactly == ph1(i, nl - 2). Maybe not useful.
75 icb1(i) = nl - 2
76 else
77 icb1(i) = locate(- ph1(i, 3:nl - 2), - plcl1(i), my_lbound = 3)
78 ! {2 <= icb1(i) <= nl - 3}
79 ! {ph1(i, icb1(i) + 1) < plcl1(i)}
80 ! {plcl1(i) <= ph1(i, icb1(i)) or icb1(i) == 2}
81 end if
82 end do
83
84 where (icb1 == nl - 2 .and. iflag1 == 0) iflag1 = 9
85
86 ! {(2 <= icb1(i) <= nl - 3 and ph1(i, icb1(i) + 1) < plcl1(i) and
87 ! (plcl1(i) <= ph1(i, icb1(i)) or icb1(i) == 2)) or iflag1(i) /=
88 ! 0}
89
90 end SUBROUTINE cv30_feed
91
92 end module cv30_feed_m

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