1 |
module lwvd_m |
2 |
|
3 |
IMPLICIT NONE |
4 |
|
5 |
contains |
6 |
|
7 |
SUBROUTINE lwvd(ktraer, pabcu, pdbdt, pga, pgb, pcntrb, pdisd, pdisu) |
8 |
USE dimens_m |
9 |
USE dimphy |
10 |
USE raddim |
11 |
USE raddimlw |
12 |
|
13 |
! ----------------------------------------------------------------------- |
14 |
! PURPOSE. |
15 |
! -------- |
16 |
! CARRIES OUT THE VERTICAL INTEGRATION ON THE DISTANT LAYERS |
17 |
|
18 |
! METHOD. |
19 |
! ------- |
20 |
|
21 |
! 1. PERFORMS THE VERTICAL INTEGRATION CORRESPONDING TO THE |
22 |
! CONTRIBUTIONS OF THE DISTANT LAYERS USING TRAPEZOIDAL RULE |
23 |
|
24 |
! REFERENCE. |
25 |
! ---------- |
26 |
|
27 |
! SEE RADIATION'S PART OF THE MODEL'S DOCUMENTATION AND |
28 |
! ECMWF RESEARCH DEPARTMENT DOCUMENTATION OF THE IFS |
29 |
|
30 |
! AUTHOR. |
31 |
! ------- |
32 |
! JEAN-JACQUES MORCRETTE *ECMWF* |
33 |
|
34 |
! MODIFICATIONS. |
35 |
! -------------- |
36 |
! ORIGINAL : 89-07-14 |
37 |
! ----------------------------------------------------------------------- |
38 |
! * ARGUMENTS: |
39 |
|
40 |
INTEGER ktraer |
41 |
|
42 |
DOUBLE PRECISION pabcu(kdlon, nua, 3*kflev+1) ! ABSORBER AMOUNTS |
43 |
DOUBLE PRECISION pdbdt(kdlon, ninter, kflev) ! LAYER PLANCK FUNCTION GRADIENT |
44 |
DOUBLE PRECISION pga(kdlon, 8, 2, kflev) ! PADE APPROXIMANTS |
45 |
DOUBLE PRECISION pgb(kdlon, 8, 2, kflev) ! PADE APPROXIMANTS |
46 |
|
47 |
DOUBLE PRECISION pcntrb(kdlon, kflev+1, kflev+1) ! ENERGY EXCHANGE MATRIX |
48 |
DOUBLE PRECISION pdisd(kdlon, kflev+1) ! CONTRIBUTION BY DISTANT LAYERS |
49 |
DOUBLE PRECISION pdisu(kdlon, kflev+1) ! CONTRIBUTION BY DISTANT LAYERS |
50 |
|
51 |
! * LOCAL VARIABLES: |
52 |
|
53 |
DOUBLE PRECISION zglayd(kdlon) |
54 |
DOUBLE PRECISION zglayu(kdlon) |
55 |
DOUBLE PRECISION ztt(kdlon, ntra) |
56 |
DOUBLE PRECISION ztt1(kdlon, ntra) |
57 |
DOUBLE PRECISION ztt2(kdlon, ntra) |
58 |
|
59 |
INTEGER jl, jk, ja, ikp1, ikn, ikd1, jkj, ikd2 |
60 |
INTEGER ikjp1, ikm1, ikj, jlk, iku1, ijkl, iku2 |
61 |
INTEGER ind1, ind2, ind3, ind4, itt |
62 |
DOUBLE PRECISION zww, zdzxdg, zdzxmg |
63 |
|
64 |
! * 1. INITIALIZATION |
65 |
! -------------- |
66 |
|
67 |
|
68 |
! * 1.1 INITIALIZE LAYER CONTRIBUTIONS |
69 |
! ------------------------------ |
70 |
|
71 |
|
72 |
DO jk = 1, kflev + 1 |
73 |
DO jl = 1, kdlon |
74 |
pdisd(jl, jk) = 0. |
75 |
pdisu(jl, jk) = 0. |
76 |
END DO |
77 |
END DO |
78 |
|
79 |
! * 1.2 INITIALIZE TRANSMISSION FUNCTIONS |
80 |
! --------------------------------- |
81 |
|
82 |
|
83 |
|
84 |
DO ja = 1, ntra |
85 |
DO jl = 1, kdlon |
86 |
ztt(jl, ja) = 1.0 |
87 |
ztt1(jl, ja) = 1.0 |
88 |
ztt2(jl, ja) = 1.0 |
89 |
END DO |
90 |
END DO |
91 |
|
92 |
! ------------------------------------------------------------------ |
93 |
|
94 |
! * 2. VERTICAL INTEGRATION |
95 |
! -------------------- |
96 |
|
97 |
|
98 |
ind1 = 0 |
99 |
ind3 = 0 |
100 |
ind4 = 1 |
101 |
ind2 = 1 |
102 |
|
103 |
|
104 |
! * 2.2 CONTRIBUTION FROM DISTANT LAYERS |
105 |
! --------------------------------- |
106 |
|
107 |
|
108 |
|
109 |
! * 2.2.1 DISTANT AND ABOVE LAYERS |
110 |
! ------------------------ |
111 |
|
112 |
|
113 |
|
114 |
|
115 |
! * 2.2.2 FIRST UPPER LEVEL |
116 |
! ----------------- |
117 |
|
118 |
|
119 |
DO jk = 1, kflev - 1 |
120 |
ikp1 = jk + 1 |
121 |
ikn = (jk-1)*ng1p1 + 1 |
122 |
ikd1 = jk*ng1p1 + 1 |
123 |
|
124 |
CALL lwttm(pga(1,1,1,jk), pgb(1,1,1,jk), pabcu(1,1,ikn), pabcu(1,1,ikd1), & |
125 |
ztt1) |
126 |
|
127 |
|
128 |
|
129 |
! * 2.2.3 HIGHER UP |
130 |
! --------- |
131 |
|
132 |
|
133 |
itt = 1 |
134 |
DO jkj = ikp1, kflev |
135 |
IF (itt==1) THEN |
136 |
itt = 2 |
137 |
ELSE |
138 |
itt = 1 |
139 |
END IF |
140 |
ikjp1 = jkj + 1 |
141 |
ikd2 = jkj*ng1p1 + 1 |
142 |
|
143 |
IF (itt==1) THEN |
144 |
CALL lwttm(pga(1,1,1,jkj), pgb(1,1,1,jkj), pabcu(1,1,ikn), & |
145 |
pabcu(1,1,ikd2), ztt1) |
146 |
ELSE |
147 |
CALL lwttm(pga(1,1,1,jkj), pgb(1,1,1,jkj), pabcu(1,1,ikn), & |
148 |
pabcu(1,1,ikd2), ztt2) |
149 |
END IF |
150 |
|
151 |
DO ja = 1, ktraer |
152 |
DO jl = 1, kdlon |
153 |
ztt(jl, ja) = (ztt1(jl,ja)+ztt2(jl,ja))*0.5 |
154 |
END DO |
155 |
END DO |
156 |
|
157 |
DO jl = 1, kdlon |
158 |
zww = pdbdt(jl, 1, jkj)*ztt(jl, 1)*ztt(jl, 10) + & |
159 |
pdbdt(jl, 2, jkj)*ztt(jl, 2)*ztt(jl, 7)*ztt(jl, 11) + & |
160 |
pdbdt(jl, 3, jkj)*ztt(jl, 4)*ztt(jl, 8)*ztt(jl, 12) + & |
161 |
pdbdt(jl, 4, jkj)*ztt(jl, 5)*ztt(jl, 9)*ztt(jl, 13) + & |
162 |
pdbdt(jl, 5, jkj)*ztt(jl, 3)*ztt(jl, 14) + & |
163 |
pdbdt(jl, 6, jkj)*ztt(jl, 6)*ztt(jl, 15) |
164 |
zglayd(jl) = zww |
165 |
zdzxdg = zglayd(jl) |
166 |
pdisd(jl, jk) = pdisd(jl, jk) + zdzxdg |
167 |
pcntrb(jl, jk, ikjp1) = zdzxdg |
168 |
END DO |
169 |
|
170 |
|
171 |
END DO |
172 |
END DO |
173 |
|
174 |
|
175 |
! * 2.2.4 DISTANT AND BELOW LAYERS |
176 |
! ------------------------ |
177 |
|
178 |
|
179 |
|
180 |
|
181 |
! * 2.2.5 FIRST LOWER LEVEL |
182 |
! ----------------- |
183 |
|
184 |
|
185 |
DO jk = 3, kflev + 1 |
186 |
ikn = (jk-1)*ng1p1 + 1 |
187 |
ikm1 = jk - 1 |
188 |
ikj = jk - 2 |
189 |
iku1 = ikj*ng1p1 + 1 |
190 |
|
191 |
|
192 |
CALL lwttm(pga(1,1,1,ikj), pgb(1,1,1,ikj), pabcu(1,1,iku1), & |
193 |
pabcu(1,1,ikn), ztt1) |
194 |
|
195 |
|
196 |
|
197 |
! * 2.2.6 DOWN BELOW |
198 |
! ---------- |
199 |
|
200 |
|
201 |
itt = 1 |
202 |
DO jlk = 1, ikj |
203 |
IF (itt==1) THEN |
204 |
itt = 2 |
205 |
ELSE |
206 |
itt = 1 |
207 |
END IF |
208 |
ijkl = ikm1 - jlk |
209 |
iku2 = (ijkl-1)*ng1p1 + 1 |
210 |
|
211 |
|
212 |
IF (itt==1) THEN |
213 |
CALL lwttm(pga(1,1,1,ijkl), pgb(1,1,1,ijkl), pabcu(1,1,iku2), & |
214 |
pabcu(1,1,ikn), ztt1) |
215 |
ELSE |
216 |
CALL lwttm(pga(1,1,1,ijkl), pgb(1,1,1,ijkl), pabcu(1,1,iku2), & |
217 |
pabcu(1,1,ikn), ztt2) |
218 |
END IF |
219 |
|
220 |
DO ja = 1, ktraer |
221 |
DO jl = 1, kdlon |
222 |
ztt(jl, ja) = (ztt1(jl,ja)+ztt2(jl,ja))*0.5 |
223 |
END DO |
224 |
END DO |
225 |
|
226 |
DO jl = 1, kdlon |
227 |
zww = pdbdt(jl, 1, ijkl)*ztt(jl, 1)*ztt(jl, 10) + & |
228 |
pdbdt(jl, 2, ijkl)*ztt(jl, 2)*ztt(jl, 7)*ztt(jl, 11) + & |
229 |
pdbdt(jl, 3, ijkl)*ztt(jl, 4)*ztt(jl, 8)*ztt(jl, 12) + & |
230 |
pdbdt(jl, 4, ijkl)*ztt(jl, 5)*ztt(jl, 9)*ztt(jl, 13) + & |
231 |
pdbdt(jl, 5, ijkl)*ztt(jl, 3)*ztt(jl, 14) + & |
232 |
pdbdt(jl, 6, ijkl)*ztt(jl, 6)*ztt(jl, 15) |
233 |
zglayu(jl) = zww |
234 |
zdzxmg = zglayu(jl) |
235 |
pdisu(jl, jk) = pdisu(jl, jk) + zdzxmg |
236 |
pcntrb(jl, jk, ijkl) = zdzxmg |
237 |
END DO |
238 |
|
239 |
|
240 |
END DO |
241 |
END DO |
242 |
|
243 |
RETURN |
244 |
END SUBROUTINE lwvd |
245 |
|
246 |
end module lwvd_m |