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alpale_th.F90 @ 4827

Last change on this file since 4827 was 4827, checked in by jyg, 3 months ago
Improved comment for multiply_proba_notrig
Property svn:keywords set to `Id`
File size: 13.2 KB

Line
1	!
2	! $Id: alpale_th.F90 4827 2024-02-16 13:59:33Z jyg $
3	!
4	SUBROUTINE alpale_th ( dtime, lmax_th, t_seri, cell_area, &
5	cin, s2, n2, &
6	ale_bl_trig, ale_bl_stat, ale_bl, &
7	alp_bl, alp_bl_stat, &
8	proba_notrig, random_notrig, birth_rate)
9
10	! **************************************************************
11	! *
12	! ALPALE_TH *
13	! *
14	! *
15	! written by : Jean-Yves Grandpeix, 11/05/2016 *
16	! modified by : *
17	! **************************************************************
18
19	USE dimphy
20	USE ioipsl_getin_p_mod, ONLY : getin_p
21	USE print_control_mod, ONLY: mydebug=>debug , lunout, prt_level
22	!
23	IMPLICIT NONE
24
25	!================================================================
26	! Auteur(s) : Jean-Yves Grandpeix, 11/05/2016
27	! Objet : Contribution of the thermal scheme to Ale and Alp
28	!================================================================
29
30	! Input arguments
31	!----------------
32	REAL, INTENT(IN) :: dtime
33	REAL, DIMENSION(klon), INTENT(IN) :: cell_area
34	INTEGER, DIMENSION(klon), INTENT(IN) :: lmax_th
35	REAL, DIMENSION(klon,klev), INTENT(IN) :: t_seri
36	REAL, DIMENSION(klon), INTENT(IN) :: ale_bl_stat
37	REAL, DIMENSION(klon), INTENT(IN) :: cin
38	REAL, DIMENSION(klon), INTENT(IN) :: s2, n2
39
40	REAL, DIMENSION(klon), INTENT(INOUT) :: ale_bl_trig, ale_bl
41	REAL, DIMENSION(klon), INTENT(INOUT) :: alp_bl
42	REAL, DIMENSION(klon), INTENT(INOUT) :: alp_bl_stat
43	REAL, DIMENSION(klon), INTENT(INOUT) :: proba_notrig
44
45	REAL, DIMENSION(klon), INTENT(OUT) :: random_notrig
46
47	REAL, DIMENSION(klon), INTENT(OUT) :: birth_rate
48
49	include "alpale.h"
50
51	! Local variables
52	!----------------
53	INTEGER :: i
54	LOGICAL, SAVE :: first = .TRUE.
55	LOGICAL, SAVE :: multiply_proba_notrig = .FALSE.
56	REAL, SAVE :: random_notrig_max=1.
57	REAL, SAVE :: cv_feed_area
58	REAL :: birth_number
59	REAL, DIMENSION(klon) :: ale_bl_ref
60	REAL, DIMENSION(klon) :: tau_trig
61	!
62	!$OMP THREADPRIVATE(multiply_proba_notrig)
63	!$OMP THREADPRIVATE(random_notrig_max)
64	!$OMP THREADPRIVATE(cv_feed_area)
65	!$OMP THREADPRIVATE(first)
66	!
67	REAL umexp ! expression of (1.-exp(-x))/x valid for all x, especially when x->0
68	REAL x
69	!
70	CHARACTER (LEN=20) :: modname='alpale_th'
71	CHARACTER (LEN=80) :: abort_message
72
73	umexp(x) = max(sign(1.,x-1.e-3),0.)*(1.-exp(-x))/max(x,1.e-3) + &
74	(1.-max(sign(1.,x-1.e-3),0.))(1.-0.5x(1.-x/3.(1.-0.25*x))) !!! correct formula (jyg)
75	!!! (1.-max(sign(1.,x-1.e-3),0.))(-0.5x(1.-x/3.(1.-0.25*x))) !!! bug introduced by mistake (jyg)
76	!!! (1.-max(sign(1.,x-1.e-3),0.))(1.-0.5x(1.-x/3.(1.-0.25*x))) !!! initial correct formula (jyg)
77	!
78	!+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
79	! JYG, 20160513 : Introduction of the Effective Lifting Power (ELP), which
80	! takes into account the area (cv_feed_area) covered by thermals contributing
81	! to each cumulonimbus.
82	! The use of ELP prevents singularities when the trigger probability tends to
83	! zero. It is activated by iflag_clos_bl = 3.
84	! The ELP values are stored in the ALP_bl variable.
85	!
86	!+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
87	!
88
89	IF (first) THEN
90	CALL getin_p('multiply_proba_notrig',multiply_proba_notrig)
91	IF (iflag_clos_bl .LT. 3) THEN
92	random_notrig_max=1.
93	CALL getin_p('random_notrig_max',random_notrig_max)
94	ELSEIF (iflag_clos_bl .EQ. 3) THEN ! (iflag_clos_bl .LT. 3)
95	cv_feed_area = 1.e10 ! m2
96	CALL getin_p('cv_feed_area', cv_feed_area)
97	ENDIF !! (iflag_clos_bl .LT. 3)
98	first=.FALSE.
99	ENDIF
100
101	!!
102	!! Control of the multiplication of no-trigger probabilities between calls
103	!! to the convection scheme. If multiply_proba_notrig is .false., then
104	!! proba_notrig is set to 1 at each call to alpale_th, so that only the last call
105	!! plays a role in the triggering of convection. If it is .true., then propa_notrig
106	!! is saved between calls to convection and is reset to 1 only after calling the
107	!! convection scheme.
108	!! For instance, if the probability of no_trigger is 0.9 at each call, and if
109	!! there are 3 calls to alpale_th between calls to the convection scheme, then the
110	!! probability of triggering convection will be 0.1 (= 1.-0.9) if
111	!! multiply_proba_notrig is .false. and 0.271 (= 1.-0.9^3) if multiply_proba_notrig
112	!! is .true.
113	!!
114	IF (.NOT.multiply_proba_notrig) THEN
115	DO i=1,klon
116	proba_notrig(i)=1.
117	ENDDO
118	ENDIF !! (.NOT.multiply_proba_notrig)
119	!!
120	!!
121	!---------------------------------------
122	IF (iflag_clos_bl .LT. 3) THEN
123	!---------------------------------------
124	!
125	! Original code (Nicolas Rochetin)
126	! --------------------------------
127	!cc nrlmd le 10/04/2012
128	!-----------Stochastic triggering-----------
129	if (iflag_trig_bl.ge.1) then
130	!
131	IF (prt_level .GE. 10) THEN
132	WRITE(lunout,*)'cin, ale_bl_stat, alp_bl, alp_bl_stat ', &
133	cin, ale_bl_stat, alp_bl, alp_bl_stat
134	ENDIF
135
136
137	!----Initialisations
138	do i=1,klon
139	!!jyg proba_notrig(i)=1.
140	random_notrig(i)=1e6ale_bl_stat(i)-int(1e6ale_bl_stat(i))
141	if ( random_notrig(i) > random_notrig_max ) random_notrig(i)=0.
142	if ( ale_bl_trig(i) .lt. abs(cin(i))+1.e-10 ) then
143	tau_trig(i)=tau_trig_shallow
144	else
145	tau_trig(i)=tau_trig_deep
146	endif
147	enddo
148	!
149	IF (prt_level .GE. 10) THEN
150	WRITE(lunout,*)'random_notrig, tau_trig ', &
151	random_notrig, tau_trig
152	WRITE(lunout,*)'s_trig,s2,n2 ', &
153	s_trig,s2,n2
154	ENDIF
155
156	!Option pour re-activer l'ancien calcul de Ale_bl (iflag_trig_bl=2)
157	IF (iflag_trig_bl.eq.1) then
158
159	!----Tirage al\'eatoire et calcul de ale_bl_trig
160	do i=1,klon
161	if ( (ale_bl_stat(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_stat(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	else
173	!!jyg proba_notrig(i)=1.
174	birth_rate(i) = 0.
175	random_notrig(i)=0.
176	ale_bl_trig(i)=0.
177	endif
178	enddo
179
180	ELSE IF (iflag_trig_bl.ge.2) then
181
182	do i=1,klon
183	if ( (Ale_bl(i) .gt. abs(cin(i))+1.e-10) ) then
184	proba_notrig(i)=proba_notrig(i)* &
185	(1.-exp(-s_trig/s2(i)))*(n2(i)dtime/tau_trig(i))
186	! print *, 'proba_notrig(i) ',proba_notrig(i)
187	if (random_notrig(i) .ge. proba_notrig(i)) then
188	ale_bl_trig(i)=Ale_bl(i)
189	else
190	ale_bl_trig(i)=0.
191	endif
192	birth_rate(i) = n2(i)exp(-s_trig/s2(i))/(tau_trig(i)cell_area(i))
193	!!! birth_rate(i) = max(birth_rate(i),1.e-18)
194	else
195	!!jyg proba_notrig(i)=1.
196	birth_rate(i) = 0.
197	random_notrig(i)=0.
198	ale_bl_trig(i)=0.
199	endif
200	enddo
201
202	ENDIF
203
204	!
205	IF (prt_level .GE. 10) THEN
206	WRITE(lunout,*)'proba_notrig, ale_bl_trig ', &
207	proba_notrig, ale_bl_trig
208	ENDIF
209
210	endif !(iflag_trig_bl)
211
212	!-----------Statistical closure-----------
213	if (iflag_clos_bl.eq.1) then
214
215	do i=1,klon
216	!CR: alp probabiliste
217	if (ale_bl_trig(i).gt.0.) then
218	alp_bl(i)=alp_bl(i)/(1.-min(proba_notrig(i),0.999))
219	endif
220	enddo
221
222	else if (iflag_clos_bl.eq.2) then
223
224	!CR: alp calculee dans thermcell_main
225	do i=1,klon
226	alp_bl(i)=alp_bl_stat(i)
227	enddo
228
229	else
230
231	alp_bl_stat(:)=0.
232
233	endif !(iflag_clos_bl)
234
235	!
236	!---------------------------------------
237	ELSEIF (iflag_clos_bl .EQ. 3) THEN ! (iflag_clos_bl .LT. 3)
238	!---------------------------------------
239	!
240	! New code with Effective Lifting Power
241	! -------------------------------------
242
243	!-----------Stochastic triggering-----------
244	if (iflag_trig_bl.ge.1) then
245	!
246	IF (prt_level .GE. 10) THEN
247	WRITE(lunout,*)'cin, ale_bl_stat, alp_bl_stat ', &
248	cin, ale_bl_stat, alp_bl_stat
249	ENDIF
250
251	! Use ale_bl_stat (Rochetin's code) or ale_bl (old code) according to
252	! iflag_trig_bl value.
253	IF (iflag_trig_bl.eq.1) then ! use ale_bl_stat (Rochetin computation)
254	do i=1,klon
255	ale_bl_ref(i)=ale_bl_stat(i)
256	enddo
257	ELSE IF (iflag_trig_bl.ge.2) then ! use ale_bl (old computation)
258	do i=1,klon
259	ale_bl_ref(i)=Ale_bl(i)
260	enddo
261	ENDIF ! (iflag_trig_bl.eq.1)
262
263
264	!----Initializations and random number generation
265	do i=1,klon
266	!!jyg proba_notrig(i)=1.
267	random_notrig(i)=1e6ale_bl_stat(i)-int(1e6ale_bl_stat(i))
268	if ( ale_bl_trig(i) .lt. abs(cin(i))+1.e-10 ) then
269	tau_trig(i)=tau_trig_shallow
270	else
271	tau_trig(i)=tau_trig_deep
272	endif
273	enddo
274	!
275	IF (prt_level .GE. 10) THEN
276	WRITE(lunout,*)'random_notrig, tau_trig ', &
277	random_notrig, tau_trig
278	WRITE(lunout,*)'s_trig,s2,n2 ', &
279	s_trig,s2,n2
280	ENDIF
281
282	!----alp_bl computation
283	do i=1,klon
284	if ( (ale_bl_ref(i) .gt. abs(cin(i))+1.e-10) ) then
285	birth_number = n2(i)*exp(-s_trig/s2(i))
286	birth_rate(i) = birth_number/(tau_trig(i)*cell_area(i))
287	!!! birth_rate(i) = max(birth_rate(i),1.e-18)
288	proba_notrig(i)=proba_notrig(i)exp(-birth_numberdtime/tau_trig(i))
289	Alp_bl(i) = Alp_bl(i)* &
290	umexp(-birth_number*cv_feed_area/cell_area(i))/ &
291	umexp(-birth_numberdtime/tau_trig(i)) &
292	tau_trig(i)cv_feed_area/(dtimecell_area(i))
293	else
294	!!jyg proba_notrig(i)=1.
295	birth_rate(i)=0.
296	random_notrig(i)=0.
297	alp_bl(i)=0.
298	endif
299	enddo
300
301	!----ale_bl_trig computation
302	do i=1,klon
303	if (random_notrig(i) .ge. proba_notrig(i)) then
304	ale_bl_trig(i)=ale_bl_ref(i)
305	else
306	ale_bl_trig(i)=0.
307	endif
308	enddo
309
310	!
311	IF (prt_level .GE. 10) THEN
312	WRITE(lunout,*)'proba_notrig, ale_bl_trig ', &
313	proba_notrig, ale_bl_trig
314	ENDIF
315
316	endif !(iflag_trig_bl .ge. 1)
317
318	!---------------------------------------
319	ENDIF ! (iflag_clos_bl .LT. 3)
320	!---------------------------------------
321
322	IF (prt_level .GE. 10) THEN
323	WRITE(lunout,*)'alpale_th: ale_bl_trig, alp_bl_stat, birth_rate ', &
324	ale_bl_trig(1), alp_bl_stat(1), birth_rate(1)
325	ENDIF
326
327	!cc fin nrlmd le 10/04/2012
328	!
329	!IM/FH: 2011/02/23
330	! Couplage Thermiques/Emanuel seulement si T<0
331	if (iflag_coupl==2) then
332	IF (prt_level .GE. 10) THEN
333	WRITE(lunout,*)'Couplage Thermiques/Emanuel seulement si T<0'
334	ENDIF
335	do i=1,klon
336	if (t_seri(i,lmax_th(i))>273.) then
337	Ale_bl(i)=0.
338	endif
339	enddo
340	! print *,'In order to run with iflag_coupl=2, you have to comment out the following stop'
341	! STOP
342	abort_message='In order to run with iflag_coupl=2, you have to comment out the following abort'
343	CALL abort_physic(modname,abort_message,1)
344	endif
345	RETURN
346	END
347

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