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alpale_th.F90 @ 3208

Last change on this file since 3208 was 3208, checked in by jyg, 7 years ago
Implementation of a first crude model of the dynamic of wake population.
File size: 12.3 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, birth_rate, &
6	q_alp)
7
8	! **************************************************************
9	! *
10	! ALPALE_TH *
11	! *
12	! *
13	! written by : Jean-Yves Grandpeix, 11/05/2016 *
14	! modified by : *
15	! **************************************************************
16
17	USE dimphy
18	USE ioipsl_getin_p_mod, ONLY : getin_p
19	USE print_control_mod, ONLY: mydebug=>debug , lunout, prt_level
20	!
21	IMPLICIT NONE
22
23	!================================================================
24	! Auteur(s) : Jean-Yves Grandpeix, 11/05/2016
25	! Objet : Contribution of the thermal scheme to Ale and Alp
26	!================================================================
27
28	! Input arguments
29	!----------------
30	REAL, INTENT(IN) :: dtime
31	REAL, DIMENSION(klon), INTENT(IN) :: cell_area
32	INTEGER, DIMENSION(klon), INTENT(IN) :: lmax_th
33	REAL, DIMENSION(klon,klev), INTENT(IN) :: t_seri
34	REAL, DIMENSION(klon), INTENT(IN) :: ale_bl_stat
35	REAL, DIMENSION(klon), INTENT(IN) :: cin
36	REAL, DIMENSION(klon), INTENT(IN) :: s2, n2
37
38	REAL, DIMENSION(klon), INTENT(INOUT) :: ale_bl_trig, ale_bl
39	REAL, DIMENSION(klon), INTENT(INOUT) :: alp_bl
40	REAL, DIMENSION(klon), INTENT(INOUT) :: alp_bl_stat
41	REAL, DIMENSION(klon), INTENT(INOUT) :: proba_notrig
42
43	REAL, DIMENSION(klon), INTENT(OUT) :: random_notrig
44
45	REAL, DIMENSION(klon), INTENT(OUT) :: birth_rate
46	REAL, DIMENSION(klon), INTENT(OUT) :: q_alp
47
48	include "thermcell.h"
49
50	! Local variables
51	!----------------
52	INTEGER :: i
53	LOGICAL, SAVE :: first = .TRUE.
54	REAL, SAVE :: random_notrig_max=1.
55	REAL, SAVE :: cv_feed_area
56	REAL :: birth_number
57	REAL, DIMENSION(klon) :: ale_bl_ref
58	REAL, DIMENSION(klon) :: tau_trig
59	!
60	!$OMP THREADPRIVATE(random_notrig_max)
61	!$OMP THREADPRIVATE(cv_feed_area)
62	!$OMP THREADPRIVATE(first)
63	!
64	REAL umexp ! expression of (1.-exp(-x))/x valid for all x, especially when x->0
65	REAL x
66	umexp(x) = max(sign(1.,x-1.e-3),0.)*(1.-exp(-x))/max(x,1.e-3) + &
67	(1.-max(sign(1.,x-1.e-3),0.))(1.-0.5x(1.-x/3.(1.-0.25*x))) !!! correct formula (jyg)
68	!!! (1.-max(sign(1.,x-1.e-3),0.))(-0.5x(1.-x/3.(1.-0.25*x))) !!! bug introduced by mistake (jyg)
69	!!! (1.-max(sign(1.,x-1.e-3),0.))(1.-0.5x(1.-x/3.(1.-0.25*x))) !!! initial correct formula (jyg)
70	!
71	!+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
72	! JYG, 20160513 : Introduction of the Effective Lifting Power (ELP), which
73	! takes into account the area (cv_feed_area) covered by thermals contributing
74	! to each cumulonimbus.
75	! The use of ELP prevents singularities when the trigger probability tends to
76	! zero. It is activated by iflag_clos_bl = 3.
77	! The ELP values are stored in the ALP_bl variable.
78	!
79	!+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
80	!
81	!!
82	!! The following 3 lines should be commented if one wants to activate the
83	!! multiplication of no-trigger probabilities between calls to the convection
84	!! scheme.
85	!!
86	do i=1,klon
87	proba_notrig(i)=1.
88	enddo
89	!!
90	!!
91	!---------------------------------------
92	IF (iflag_clos_bl .LT. 3) THEN
93	!---------------------------------------
94	!
95	! Original code (Nicolas Rochetin)
96	! --------------------------------
97
98	IF (first) THEN
99	random_notrig_max=1.
100	CALL getin_p('random_notrig_max',random_notrig_max)
101	first=.FALSE.
102	ENDIF
103	!cc nrlmd le 10/04/2012
104	!-----------Stochastic triggering-----------
105	if (iflag_trig_bl.ge.1) then
106	!
107	IF (prt_level .GE. 10) THEN
108	print *,'cin, ale_bl_stat, alp_bl, alp_bl_stat ', &
109	cin, ale_bl_stat, alp_bl, alp_bl_stat
110	ENDIF
111
112
113	!----Initialisations
114	do i=1,klon
115	!!jyg proba_notrig(i)=1.
116	random_notrig(i)=1e6ale_bl_stat(i)-int(1e6ale_bl_stat(i))
117	if ( random_notrig(i) > random_notrig_max ) random_notrig(i)=0.
118	if ( ale_bl_trig(i) .lt. abs(cin(i))+1.e-10 ) then
119	tau_trig(i)=tau_trig_shallow
120	else
121	tau_trig(i)=tau_trig_deep
122	endif
123	enddo
124	!
125	IF (prt_level .GE. 10) THEN
126	print *,'random_notrig, tau_trig ', &
127	random_notrig, tau_trig
128	print *,'s_trig,s2,n2 ', &
129	s_trig,s2,n2
130	ENDIF
131
132	!Option pour re-activer l'ancien calcul de Ale_bl (iflag_trig_bl=2)
133	IF (iflag_trig_bl.eq.1) then
134
135	!----Tirage al\'eatoire et calcul de ale_bl_trig
136	do i=1,klon
137	if ( (ale_bl_stat(i) .gt. abs(cin(i))+1.e-10) ) then
138	proba_notrig(i)=proba_notrig(i)* &
139	(1.-exp(-s_trig/s2(i)))*(n2(i)dtime/tau_trig(i))
140	! print *, 'proba_notrig(i) ',proba_notrig(i)
141	if (random_notrig(i) .ge. proba_notrig(i)) then
142	ale_bl_trig(i)=ale_bl_stat(i)
143	else
144	ale_bl_trig(i)=0.
145	endif
146	birth_rate(i) = n2(i)exp(-s_trig/s2(i))/(tau_trig(i)cell_area(i))
147	!!! birth_rate(i) = max(birth_rate(i),1.e-18)
148	q_alp(i) = alp_bl(i)/max(birth_rate(i),1.e-18)
149	else
150	!!jyg proba_notrig(i)=1.
151	birth_rate(i) = 0.
152	random_notrig(i)=0.
153	ale_bl_trig(i)=0.
154	q_alp(i) = 0.
155	endif
156	enddo
157
158	ELSE IF (iflag_trig_bl.ge.2) then
159
160	do i=1,klon
161	if ( (Ale_bl(i) .gt. abs(cin(i))+1.e-10) ) then
162	proba_notrig(i)=proba_notrig(i)* &
163	(1.-exp(-s_trig/s2(i)))*(n2(i)dtime/tau_trig(i))
164	! print *, 'proba_notrig(i) ',proba_notrig(i)
165	if (random_notrig(i) .ge. proba_notrig(i)) then
166	ale_bl_trig(i)=Ale_bl(i)
167	else
168	ale_bl_trig(i)=0.
169	endif
170	birth_rate(i) = n2(i)exp(-s_trig/s2(i))/(tau_trig(i)cell_area(i))
171	!!! birth_rate(i) = max(birth_rate(i),1.e-18)
172	q_alp(i) = alp_bl(i)/max(birth_rate(i),1.e-18)
173	else
174	!!jyg proba_notrig(i)=1.
175	birth_rate(i) = 0.
176	random_notrig(i)=0.
177	ale_bl_trig(i)=0.
178	q_alp(i) = 0.
179	endif
180	enddo
181
182	ENDIF
183
184	!
185	IF (prt_level .GE. 10) THEN
186	print *,'proba_notrig, ale_bl_trig ', &
187	proba_notrig, ale_bl_trig
188	ENDIF
189
190	endif !(iflag_trig_bl)
191
192	!-----------Statistical closure-----------
193	if (iflag_clos_bl.eq.1) then
194
195	do i=1,klon
196	!CR: alp probabiliste
197	if (ale_bl_trig(i).gt.0.) then
198	alp_bl(i)=alp_bl(i)/(1.-min(proba_notrig(i),0.999))
199	endif
200	enddo
201
202	else if (iflag_clos_bl.eq.2) then
203
204	!CR: alp calculee dans thermcell_main
205	do i=1,klon
206	alp_bl(i)=alp_bl_stat(i)
207	enddo
208
209	else
210
211	alp_bl_stat(:)=0.
212
213	endif !(iflag_clos_bl)
214
215	!
216	!---------------------------------------
217	ELSEIF (iflag_clos_bl .EQ. 3) THEN ! (iflag_clos_bl .LT. 3)
218	!---------------------------------------
219	!
220	! New code with Effective Lifting Power
221	! -------------------------------------
222	IF (first) THEN
223	cv_feed_area = 1.e10 ! m2
224	CALL getin_p('cv_feed_area', cv_feed_area)
225	first=.FALSE.
226	ENDIF
227
228	!-----------Stochastic triggering-----------
229	if (iflag_trig_bl.ge.1) then
230	!
231	IF (prt_level .GE. 10) THEN
232	print *,'cin, ale_bl_stat, alp_bl_stat ', &
233	cin, ale_bl_stat, alp_bl_stat
234	ENDIF
235
236	! Use ale_bl_stat (Rochetin's code) or ale_bl (old code) according to
237	! iflag_trig_bl value.
238	IF (iflag_trig_bl.eq.1) then ! use ale_bl_stat (Rochetin computation)
239	do i=1,klon
240	ale_bl_ref(i)=ale_bl_stat(i)
241	enddo
242	ELSE IF (iflag_trig_bl.ge.2) then ! use ale_bl (old computation)
243	do i=1,klon
244	ale_bl_ref(i)=Ale_bl(i)
245	enddo
246	ENDIF ! (iflag_trig_bl.eq.1)
247
248
249	!----Initializations and random number generation
250	do i=1,klon
251	!!jyg proba_notrig(i)=1.
252	random_notrig(i)=1e6ale_bl_stat(i)-int(1e6ale_bl_stat(i))
253	if ( ale_bl_trig(i) .lt. abs(cin(i))+1.e-10 ) then
254	tau_trig(i)=tau_trig_shallow
255	else
256	tau_trig(i)=tau_trig_deep
257	endif
258	enddo
259	!
260	IF (prt_level .GE. 10) THEN
261	print *,'random_notrig, tau_trig ', &
262	random_notrig, tau_trig
263	print *,'s_trig,s2,n2 ', &
264	s_trig,s2,n2
265	ENDIF
266
267	!----alp_bl computation
268	do i=1,klon
269	if ( (ale_bl_ref(i) .gt. abs(cin(i))+1.e-10) ) then
270	birth_number = n2(i)*exp(-s_trig/s2(i))
271	birth_rate(i) = birth_number/(tau_trig(i)*cell_area(i))
272	!!! birth_rate(i) = max(birth_rate(i),1.e-18)
273	proba_notrig(i)=proba_notrig(i)exp(-birth_numberdtime/tau_trig(i))
274	q_alp(i) = alp_bl(i)/max(birth_rate(i),1.e-18)
275	Alp_bl(i) = Alp_bl(i)* &
276	umexp(-birth_number*cv_feed_area/cell_area(i))/ &
277	umexp(-birth_numberdtime/tau_trig(i)) &
278	tau_trig(i)cv_feed_area/(dtimecell_area(i))
279	else
280	!!jyg proba_notrig(i)=1.
281	birth_rate(i)=0.
282	random_notrig(i)=0.
283	alp_bl(i)=0.
284	q_alp(i) = 0.
285	endif
286	enddo
287
288	!----ale_bl_trig computation
289	do i=1,klon
290	if (random_notrig(i) .ge. proba_notrig(i)) then
291	ale_bl_trig(i)=ale_bl_ref(i)
292	else
293	ale_bl_trig(i)=0.
294	endif
295	enddo
296
297	!
298	IF (prt_level .GE. 10) THEN
299	print *,'proba_notrig, ale_bl_trig ', &
300	proba_notrig, ale_bl_trig
301	ENDIF
302
303	endif !(iflag_trig_bl .ge. 1)
304
305	!---------------------------------------
306	ENDIF ! (iflag_clos_bl .LT. 3)
307	!---------------------------------------
308
309	IF (prt_level .GE. 10) THEN
310	print *,'alpale_th: ale_bl_trig, alp_bl_stat, birth_rate, q_alp ', &
311	ale_bl_trig(1), alp_bl_stat(1), birth_rate(1), q_alp(1)
312	ENDIF
313
314	!cc fin nrlmd le 10/04/2012
315	!
316	!IM/FH: 2011/02/23
317	! Couplage Thermiques/Emanuel seulement si T<0
318	if (iflag_coupl==2) then
319	IF (prt_level .GE. 10) THEN
320	print*,'Couplage Thermiques/Emanuel seulement si T<0'
321	ENDIF
322	do i=1,klon
323	if (t_seri(i,lmax_th(i))>273.) then
324	Ale_bl(i)=0.
325	endif
326	enddo
327	print *,'In order to run with iflag_coupl=2, you have to comment out the following stop'
328	STOP
329	endif
330	RETURN
331	END
332

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