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alpale_th.F90 @ 5456

Last change on this file since 5456 was 2787, checked in by Laurent Fairhead, 8 years ago
Merged trunk changes r2727:2785 into testing branch
File size: 11.1 KB

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1	SUBROUTINE alpale_th ( dtime, lmax_th, t_seri, cell_area, &
2	cin, s2, n2, &
3	ale_bl_trig, ale_bl_stat, ale_bl, &
4	alp_bl, alp_bl_stat, &
5	proba_notrig, random_notrig)
6
7	! **************************************************************
8	! *
9	! ALPALE_TH *
10	! *
11	! *
12	! written by : Jean-Yves Grandpeix, 11/05/2016 *
13	! modified by : *
14	! **************************************************************
15
16	USE dimphy
17	USE ioipsl_getin_p_mod, ONLY : getin_p
18	USE print_control_mod, ONLY: mydebug=>debug , lunout, prt_level
19	!
20	IMPLICIT NONE
21
22	!================================================================
23	! Auteur(s) : Jean-Yves Grandpeix, 11/05/2016
24	! Objet : Contribution of the thermal scheme to Ale and Alp
25	!================================================================
26
27	! Input arguments
28	!----------------
29	REAL, INTENT(IN) :: dtime
30	REAL, DIMENSION(klon), INTENT(IN) :: cell_area
31	INTEGER, DIMENSION(klon), INTENT(IN) :: lmax_th
32	REAL, DIMENSION(klon,klev), INTENT(IN) :: t_seri
33	REAL, DIMENSION(klon), INTENT(IN) :: ale_bl_stat
34	REAL, DIMENSION(klon), INTENT(IN) :: cin
35	REAL, DIMENSION(klon), INTENT(IN) :: s2, n2
36
37	REAL, DIMENSION(klon), INTENT(INOUT) :: ale_bl_trig, ale_bl
38	REAL, DIMENSION(klon), INTENT(INOUT) :: alp_bl
39	REAL, DIMENSION(klon), INTENT(INOUT) :: alp_bl_stat
40	REAL, DIMENSION(klon), INTENT(INOUT) :: proba_notrig
41
42	REAL, DIMENSION(klon), INTENT(OUT) :: random_notrig
43
44	include "thermcell.h"
45
46	! Local variables
47	!----------------
48	INTEGER :: i
49	LOGICAL, SAVE :: first = .TRUE.
50	REAL, SAVE :: random_notrig_max=1.
51	REAL, SAVE :: cv_feed_area
52	REAL :: birth_number
53	REAL, DIMENSION(klon) :: ale_bl_ref
54	REAL, DIMENSION(klon) :: tau_trig
55	REAL, DIMENSION(klon) :: birth_rate
56	!
57	!$OMP THREADPRIVATE(random_notrig_max)
58	!$OMP THREADPRIVATE(cv_feed_area)
59	!$OMP THREADPRIVATE(first)
60	!
61	REAL umexp ! expression of (1.-exp(-x))/x valid for all x, especially when x->0
62	REAL x
63	umexp(x) = max(sign(1.,x-1.e-3),0.)*(1.-exp(-x))/max(x,1.e-3) + &
64	(1.-max(sign(1.,x-1.e-3),0.))(1.-0.5x(1.-x/3.(1.-0.25*x)))
65	!
66	!+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
67	! JYG, 20160513 : Introduction of the Effective Lifting Power (ELP), which
68	! takes into account the area (cv_feed_area) covered by thermals contributing
69	! to each cumulonimbus.
70	! The use of ELP prevents singularities when the trigger probability tends to
71	! zero. It is activated by iflag_clos_bl = 3.
72	! The ELP values are stored in the ALP_bl variable.
73	!
74	!+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
75	!
76	!!
77	!! The following 3 lines should be commented if one wants to activate the
78	!! multiplication of no-trigger probabilities between calls to the convection
79	!! scheme.
80	!!
81	do i=1,klon
82	proba_notrig(i)=1.
83	enddo
84	!!
85	!!
86	!---------------------------------------
87	IF (iflag_clos_bl .LT. 3) THEN
88	!---------------------------------------
89	!
90	! Original code (Nicolas Rochetin)
91	! --------------------------------
92
93	IF (first) THEN
94	random_notrig_max=1.
95	CALL getin_p('random_notrig_max',random_notrig_max)
96	first=.FALSE.
97	ENDIF
98	!cc nrlmd le 10/04/2012
99	!-----------Stochastic triggering-----------
100	if (iflag_trig_bl.ge.1) then
101	!
102	IF (prt_level .GE. 10) THEN
103	print *,'cin, ale_bl_stat, alp_bl_stat ', &
104	cin, ale_bl_stat, alp_bl_stat
105	ENDIF
106
107
108	!----Initialisations
109	do i=1,klon
110	!!jyg proba_notrig(i)=1.
111	random_notrig(i)=1e6ale_bl_stat(i)-int(1e6ale_bl_stat(i))
112	if ( random_notrig(i) > random_notrig_max ) random_notrig(i)=0.
113	if ( ale_bl_trig(i) .lt. abs(cin(i))+1.e-10 ) then
114	tau_trig(i)=tau_trig_shallow
115	else
116	tau_trig(i)=tau_trig_deep
117	endif
118	enddo
119	!
120	IF (prt_level .GE. 10) THEN
121	print *,'random_notrig, tau_trig ', &
122	random_notrig, tau_trig
123	print *,'s_trig,s2,n2 ', &
124	s_trig,s2,n2
125	ENDIF
126
127	!Option pour re-activer l'ancien calcul de Ale_bl (iflag_trig_bl=2)
128	IF (iflag_trig_bl.eq.1) then
129
130	!----Tirage al\'eatoire et calcul de ale_bl_trig
131	do i=1,klon
132	if ( (ale_bl_stat(i) .gt. abs(cin(i))+1.e-10) ) then
133	proba_notrig(i)=proba_notrig(i)* &
134	(1.-exp(-s_trig/s2(i)))*(n2(i)dtime/tau_trig(i))
135	! print *, 'proba_notrig(i) ',proba_notrig(i)
136	if (random_notrig(i) .ge. proba_notrig(i)) then
137	ale_bl_trig(i)=ale_bl_stat(i)
138	else
139	ale_bl_trig(i)=0.
140	endif
141	else
142	!!jyg proba_notrig(i)=1.
143	random_notrig(i)=0.
144	ale_bl_trig(i)=0.
145	endif
146	enddo
147
148	ELSE IF (iflag_trig_bl.ge.2) then
149
150	do i=1,klon
151	if ( (Ale_bl(i) .gt. abs(cin(i))+1.e-10) ) then
152	proba_notrig(i)=proba_notrig(i)* &
153	(1.-exp(-s_trig/s2(i)))*(n2(i)dtime/tau_trig(i))
154	! print *, 'proba_notrig(i) ',proba_notrig(i)
155	if (random_notrig(i) .ge. proba_notrig(i)) then
156	ale_bl_trig(i)=Ale_bl(i)
157	else
158	ale_bl_trig(i)=0.
159	endif
160	else
161	!!jyg proba_notrig(i)=1.
162	random_notrig(i)=0.
163	ale_bl_trig(i)=0.
164	endif
165	enddo
166
167	ENDIF
168
169	!
170	IF (prt_level .GE. 10) THEN
171	print *,'proba_notrig, ale_bl_trig ', &
172	proba_notrig, ale_bl_trig
173	ENDIF
174
175	endif !(iflag_trig_bl)
176
177	!-----------Statistical closure-----------
178	if (iflag_clos_bl.eq.1) then
179
180	do i=1,klon
181	!CR: alp probabiliste
182	if (ale_bl_trig(i).gt.0.) then
183	alp_bl(i)=alp_bl(i)/(1.-min(proba_notrig(i),0.999))
184	endif
185	enddo
186
187	else if (iflag_clos_bl.eq.2) then
188
189	!CR: alp calculee dans thermcell_main
190	do i=1,klon
191	alp_bl(i)=alp_bl_stat(i)
192	enddo
193
194	else
195
196	alp_bl_stat(:)=0.
197
198	endif !(iflag_clos_bl)
199
200	!
201	!---------------------------------------
202	ELSEIF (iflag_clos_bl .EQ. 3) THEN ! (iflag_clos_bl .LT. 3)
203	!---------------------------------------
204	!
205	! New code with Effective Lifting Power
206	! -------------------------------------
207	IF (first) THEN
208	cv_feed_area = 1.e10 ! m2
209	CALL getin_p('cv_feed_area', cv_feed_area)
210	first=.FALSE.
211	ENDIF
212
213	!-----------Stochastic triggering-----------
214	if (iflag_trig_bl.ge.1) then
215	!
216	IF (prt_level .GE. 10) THEN
217	print *,'cin, ale_bl_stat, alp_bl_stat ', &
218	cin, ale_bl_stat, alp_bl_stat
219	ENDIF
220
221	! Use ale_bl_stat (Rochetin's code) or ale_bl (old code) according to
222	! iflag_trig_bl value.
223	IF (iflag_trig_bl.eq.1) then ! use ale_bl_stat (Rochetin computation)
224	do i=1,klon
225	ale_bl_ref(i)=ale_bl_stat(i)
226	enddo
227	ELSE IF (iflag_trig_bl.ge.2) then ! use ale_bl (old computation)
228	do i=1,klon
229	ale_bl_ref(i)=Ale_bl(i)
230	enddo
231	ENDIF ! (iflag_trig_bl.eq.1)
232
233
234	!----Initializations and random number generation
235	do i=1,klon
236	!!jyg proba_notrig(i)=1.
237	random_notrig(i)=1e6ale_bl_stat(i)-int(1e6ale_bl_stat(i))
238	if ( ale_bl_trig(i) .lt. abs(cin(i))+1.e-10 ) then
239	tau_trig(i)=tau_trig_shallow
240	else
241	tau_trig(i)=tau_trig_deep
242	endif
243	enddo
244	!
245	IF (prt_level .GE. 10) THEN
246	print *,'random_notrig, tau_trig ', &
247	random_notrig, tau_trig
248	print *,'s_trig,s2,n2 ', &
249	s_trig,s2,n2
250	ENDIF
251
252	!----alp_bl computation
253	do i=1,klon
254	if ( (ale_bl_ref(i) .gt. abs(cin(i))+1.e-10) ) then
255	birth_number = n2(i)*exp(-s_trig/s2(i))
256	birth_rate(i) = birth_number/(tau_trig(i)*cell_area(i))
257	proba_notrig(i)=proba_notrig(i)exp(-birth_numberdtime/tau_trig(i))
258	Alp_bl(i) = Alp_bl(i)* &
259	umexp(-birth_number*cv_feed_area/cell_area(i))/ &
260	umexp(-birth_numberdtime/tau_trig(i)) &
261	tau_trig(i)cv_feed_area/(dtimecell_area(i))
262	else
263	!!jyg proba_notrig(i)=1.
264	random_notrig(i)=0.
265	alp_bl(i)=0.
266	endif
267	enddo
268
269	!----ale_bl_trig computation
270	do i=1,klon
271	if (random_notrig(i) .ge. proba_notrig(i)) then
272	ale_bl_trig(i)=ale_bl_ref(i)
273	else
274	ale_bl_trig(i)=0.
275	endif
276	enddo
277
278	!
279	IF (prt_level .GE. 10) THEN
280	print *,'proba_notrig, ale_bl_trig ', &
281	proba_notrig, ale_bl_trig
282	ENDIF
283
284	endif !(iflag_trig_bl .ge. 1)
285
286	!---------------------------------------
287	ENDIF ! (iflag_clos_bl .LT. 3)
288	!---------------------------------------
289
290	IF (prt_level .GE. 10) THEN
291	print *,'ale_bl_trig, alp_bl_stat ',ale_bl_trig, alp_bl_stat
292	ENDIF
293
294	!cc fin nrlmd le 10/04/2012
295	!
296	!IM/FH: 2011/02/23
297	! Couplage Thermiques/Emanuel seulement si T<0
298	if (iflag_coupl==2) then
299	IF (prt_level .GE. 10) THEN
300	print*,'Couplage Thermiques/Emanuel seulement si T<0'
301	ENDIF
302	do i=1,klon
303	if (t_seri(i,lmax_th(i))>273.) then
304	Ale_bl(i)=0.
305	endif
306	enddo
307	print *,'In order to run with iflag_coupl=2, you have to comment out the following stop'
308	STOP
309	endif
310	RETURN
311	END
312

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