/[lmdze]/trunk/Sources/phylmd/Radlwsw/swtt.f
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Contents of /trunk/Sources/phylmd/Radlwsw/swtt.f

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Revision 178 - (show annotations)
Fri Mar 11 18:47:26 2016 UTC (8 years, 2 months ago) by guez
File size: 3739 byte(s) 
Moved variables date0, deltat, datasz_max, ncvar_ids, point, buff_pos,
buffer, regular from module histcom_var to modules where they are
defined.

Removed procedure ioipslmpp, useless for a sequential program.

Added argument datasz_max to histwrite_real (to avoid circular
dependency with histwrite).

Removed useless variables and computations everywhere.

Changed real litteral constants from default kind to double precision
in lwb, lwu, lwvn, sw1s, swtt, swtt1, swu.

Removed unused arguments: paer of sw, sw1s, sw2s, swclr; pcldsw of
sw1s, sw2s; pdsig, prayl of swr; co2_ppm of clmain, clqh; tsol of
transp_lay; nsrf of screenp; kcrit and kknu of gwstress; pstd of
orosetup.

Added output of relative humidity.
1 SUBROUTINE swtt(knu, ka, pu, ptr)
2 USE dimens_m
3 USE dimphy
4 USE raddim
5 IMPLICIT NONE
6
7 ! -----------------------------------------------------------------------
8 ! PURPOSE.
9 ! --------
10 ! THIS ROUTINE COMPUTES THE TRANSMISSION FUNCTIONS FOR ALL THE
11 ! ABSORBERS (H2O, UNIFORMLY MIXED GASES, AND O3) IN THE TWO SPECTRAL
12 ! INTERVALS.
13
14 ! METHOD.
15 ! -------
16
17 ! TRANSMISSION FUNCTION ARE COMPUTED USING PADE APPROXIMANTS
18 ! AND HORNER'S ALGORITHM.
19
20 ! REFERENCE.
21 ! ----------
22
23 ! SEE RADIATION'S PART OF THE MODEL'S DOCUMENTATION AND
24 ! ECMWF RESEARCH DEPARTMENT DOCUMENTATION OF THE IFS
25
26 ! AUTHOR.
27 ! -------
28 ! JEAN-JACQUES MORCRETTE *ECMWF*
29
30 ! MODIFICATIONS.
31 ! --------------
32 ! ORIGINAL : 88-12-15
33 ! -----------------------------------------------------------------------
34
35 ! * ARGUMENTS
36
37 INTEGER knu ! INDEX OF THE SPECTRAL INTERVAL
38 INTEGER ka ! INDEX OF THE ABSORBER
39 DOUBLE PRECISION pu(kdlon) ! ABSORBER AMOUNT
40
41 DOUBLE PRECISION ptr(kdlon) ! TRANSMISSION FUNCTION
42
43 ! * LOCAL VARIABLES:
44
45 DOUBLE PRECISION zr1(kdlon), zr2(kdlon)
46 INTEGER jl, i, j
47
48 ! * Prescribed Data:
49
50 DOUBLE PRECISION apad(2, 3, 7), bpad(2, 3, 7), d(2, 3)
51 SAVE apad, bpad, d
52 DATA ((apad(1,i,j),i=1,3), j=1, 7)/0.912418292D+05, 0.000000000D-00, &
53 0.925887084D-04, 0.723613782D+05, 0.000000000D-00, 0.129353723D-01, &
54 0.596037057D+04, 0.000000000D-00, 0.800821928D+00, 0.000000000D-00, &
55 0.000000000D-00, 0.242715973D+02, 0.000000000D-00, 0.000000000D-00, &
56 0.878331486D+02, 0.000000000D-00, 0.000000000D-00, 0.191559725D+02, &
57 0.000000000D-00, 0.000000000D-00, 0.000000000D+00/
58 DATA ((apad(2,i,j),i=1,3), j=1, 7)/0.376655383D-08, 0.739646016D-08, &
59 0.410177786D+03, 0.978576773D-04, 0.131849595D-03, 0.672595424D+02, &
60 0.387714006D+00, 0.437772681D+00, 0.000000000D-00, 0.118461660D+03, &
61 0.151345118D+03, 0.000000000D-00, 0.119079797D+04, 0.233628890D+04, &
62 0.000000000D-00, 0.293353397D+03, 0.797219934D+03, 0.000000000D-00, &
63 0.000000000D+00, 0.000000000D+00, 0.000000000D+00/
64
65 DATA ((bpad(1,i,j),i=1,3), j=1, 7)/0.912418292D+05, 0.000000000D-00, &
66 0.925887084D-04, 0.724555318D+05, 0.000000000D-00, 0.131812683D-01, &
67 0.602593328D+04, 0.000000000D-00, 0.812706117D+00, 0.100000000D+01, &
68 0.000000000D-00, 0.249863591D+02, 0.000000000D-00, 0.000000000D-00, &
69 0.931071925D+02, 0.000000000D-00, 0.000000000D-00, 0.252233437D+02, &
70 0.000000000D-00, 0.000000000D-00, 0.100000000D+01/
71 DATA ((bpad(2,i,j),i=1,3), j=1, 7)/0.376655383D-08, 0.739646016D-08, &
72 0.410177786D+03, 0.979023421D-04, 0.131861712D-03, 0.731185438D+02, &
73 0.388611139D+00, 0.437949001D+00, 0.100000000D+01, 0.120291383D+03, &
74 0.151692730D+03, 0.000000000D+00, 0.130531005D+04, 0.237071130D+04, &
75 0.000000000D+00, 0.415049409D+03, 0.867914360D+03, 0.000000000D+00, &
76 0.100000000D+01, 0.100000000D+01, 0.000000000D+00/
77
78 DATA (d(1,i), i=1, 3)/0.00d0, 0.00d0, 0.00d0/
79 DATA (d(2,i), i=1, 3)/0.000000000d0, 0.000000000d0, 0.800000000d0/
80
81 ! -----------------------------------------------------------------------
82
83 ! * 1. HORNER'S ALGORITHM TO COMPUTE TRANSMISSION FUNCTION
84
85
86 DO jl = 1, kdlon
87 zr1(jl) = apad(knu, ka, 1) + pu(jl)*(apad(knu,ka,2)+pu(jl)*(apad(knu,ka, &
88 3)+pu(jl)*(apad(knu,ka,4)+pu(jl)*(apad(knu,ka,5)+pu(jl)*(apad(knu,ka,6) &
89 +pu(jl)*(apad(knu,ka,7)))))))
90
91 zr2(jl) = bpad(knu, ka, 1) + pu(jl)*(bpad(knu,ka,2)+pu(jl)*(bpad(knu,ka, &
92 3)+pu(jl)*(bpad(knu,ka,4)+pu(jl)*(bpad(knu,ka,5)+pu(jl)*(bpad(knu,ka,6) &
93 +pu(jl)*(bpad(knu,ka,7)))))))
94
95
96 ! * 2. ADD THE BACKGROUND TRANSMISSION
97
98
99
100 ptr(jl) = (zr1(jl)/zr2(jl))*(1.-d(knu,ka)) + d(knu, ka)
101 END DO
102
103 RETURN
104 END SUBROUTINE swtt
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