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traccoag_mod.F90 @ 5028

Last change on this file since 5028 was 4368, checked in by lguez, 2 years ago
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1	!
2	! $Id: traccoag_mod.F90 4368 2022-12-05 23:01:16Z asima $
3	!
4	MODULE traccoag_mod
5	!
6	! This module calculates the concentration of aerosol particles in certain size bins
7	! considering coagulation and sedimentation.
8	!
9	CONTAINS
10
11	SUBROUTINE traccoag(pdtphys, gmtime, debutphy, julien, &
12	presnivs, xlat, xlon, pphis, pphi, &
13	t_seri, pplay, paprs, sh, rh, tr_seri)
14
15	USE phys_local_var_mod, ONLY: mdw, R2SO4, DENSO4, f_r_wet, surf_PM25_sulf, &
16	& budg_emi_ocs, budg_emi_so2, budg_emi_h2so4, budg_emi_part
17
18	USE dimphy
19	USE infotrac_phy, ONLY : nbtr_bin, nbtr_sulgas, nbtr, id_SO2_strat
20	USE aerophys
21	USE geometry_mod, ONLY : cell_area, boundslat
22	USE mod_grid_phy_lmdz
23	USE mod_phys_lmdz_mpi_data, ONLY : is_mpi_root
24	USE mod_phys_lmdz_para, only: gather, scatter
25	USE phys_cal_mod, ONLY : year_len, year_cur,mth_cur, day_cur, hour
26	USE sulfate_aer_mod
27	USE phys_local_var_mod, ONLY: stratomask
28	USE YOMCST
29	USE print_control_mod, ONLY: lunout
30	USE strataer_mod
31
32	IMPLICIT NONE
33
34	! Input argument
35	!---------------
36	REAL,INTENT(IN) :: pdtphys ! Pas d'integration pour la physique (seconde)
37	REAL,INTENT(IN) :: gmtime ! Heure courante
38	LOGICAL,INTENT(IN) :: debutphy ! le flag de l'initialisation de la physique
39	INTEGER,INTENT(IN) :: julien ! Jour julien
40
41	REAL,DIMENSION(klev),INTENT(IN) :: presnivs! pressions approximat. des milieux couches (en PA)
42	REAL,DIMENSION(klon),INTENT(IN) :: xlat ! latitudes pour chaque point
43	REAL,DIMENSION(klon),INTENT(IN) :: xlon ! longitudes pour chaque point
44	REAL,DIMENSION(klon),INTENT(IN) :: pphis ! geopotentiel du sol
45	REAL,DIMENSION(klon,klev),INTENT(IN) :: pphi ! geopotentiel de chaque couche
46
47	REAL,DIMENSION(klon,klev),INTENT(IN) :: t_seri ! Temperature
48	REAL,DIMENSION(klon,klev),INTENT(IN) :: pplay ! pression pour le mileu de chaque couche (en Pa)
49	REAL,DIMENSION(klon,klev+1),INTENT(IN) :: paprs ! pression pour chaque inter-couche (en Pa)
50	REAL,DIMENSION(klon,klev),INTENT(IN) :: sh ! humidite specifique
51	REAL,DIMENSION(klon,klev),INTENT(IN) :: rh ! humidite relative
52
53	! Output argument
54	!----------------
55	REAL,DIMENSION(klon,klev,nbtr),INTENT(INOUT) :: tr_seri ! Concentration Traceur [U/KgA]
56
57	! Local variables
58	!----------------
59	REAL :: m_aer_emiss_vol_daily ! daily injection mass emission
60	INTEGER :: it, k, i, ilon, ilev, itime, i_int, ieru
61	LOGICAL,DIMENSION(klon,klev) :: is_strato ! true = above tropopause, false = below
62	REAL,DIMENSION(klon,klev) :: m_air_gridbox ! mass of air in every grid box [kg]
63	REAL,DIMENSION(klon_glo,klev,nbtr) :: tr_seri_glo ! Concentration Traceur [U/KgA]
64	REAL,DIMENSION(klev+1) :: altLMDz ! altitude of layer interfaces in m
65	REAL,DIMENSION(klev) :: f_lay_emiss ! fraction of emission for every vertical layer
66	REAL :: f_lay_sum ! sum of layer emission fractions
67	REAL :: alt ! altitude for integral calculation
68	INTEGER,PARAMETER :: n_int_alt=10 ! number of subintervals for integration over Gaussian emission profile
69	REAL,DIMENSION(nbtr_bin) :: r_bin ! particle radius in size bin [m]
70	REAL,DIMENSION(nbtr_bin) :: r_lower ! particle radius at lower bin boundary [m]
71	REAL,DIMENSION(nbtr_bin) :: r_upper ! particle radius at upper bin boundary [m]
72	REAL,DIMENSION(nbtr_bin) :: m_part_dry ! mass of one dry particle in size bin [kg]
73	REAL :: zrho ! Density of air [kg/m3]
74	REAL :: zdz ! thickness of atm. model layer in m
75	REAL,DIMENSION(klev) :: zdm ! mass of atm. model layer in kg
76	REAL,DIMENSION(klon,klev) :: dens_aer ! density of aerosol particles [kg/m3 aerosol] with default H2SO4 mass fraction
77	REAL :: emission ! emission
78	REAL :: theta_min, theta_max ! for SAI computation between two latitudes
79	REAL :: dlat_loc
80
81	IF (is_mpi_root) THEN
82	WRITE(lunout,*) 'in traccoag: date from phys_cal_mod =',year_cur,'-',mth_cur,'-',day_cur,'-',hour
83	WRITE(lunout,*) 'IN traccoag flag_sulf_emit: ',flag_sulf_emit
84	ENDIF
85
86	DO it=1, nbtr_bin
87	r_bin(it)=mdw(it)/2.
88	ENDDO
89
90	!--set boundaries of size bins
91	DO it=1, nbtr_bin
92	IF (it.EQ.1) THEN
93	r_upper(it)=sqrt(r_bin(it+1)*r_bin(it))
94	r_lower(it)=r_bin(it)**2./r_upper(it)
95	ELSEIF (it.EQ.nbtr_bin) THEN
96	r_lower(it)=sqrt(r_bin(it)*r_bin(it-1))
97	r_upper(it)=r_bin(it)**2./r_lower(it)
98	ELSE
99	r_lower(it)=sqrt(r_bin(it)*r_bin(it-1))
100	r_upper(it)=sqrt(r_bin(it+1)*r_bin(it))
101	ENDIF
102	ENDDO
103
104	IF (debutphy .and. is_mpi_root) THEN
105	DO it=1, nbtr_bin
106	WRITE(lunout,*) 'radius bin', it, ':', r_bin(it), '(from', r_lower(it), 'to', r_upper(it), ')'
107	ENDDO
108	ENDIF
109
110	!--initialising logical is_strato from stratomask
111	is_strato(:,:)=.FALSE.
112	WHERE (stratomask.GT.0.5) is_strato=.TRUE.
113
114	! STRACOMP (H2O, P, t_seri -> aerosol composition (R2SO4))
115	! H2SO4 mass fraction in aerosol (%)
116	CALL stracomp(sh,t_seri,pplay)
117
118	! aerosol density (gr/cm3)
119	CALL denh2sa(t_seri)
120
121	! compute factor for converting dry to wet radius (for every grid box)
122	f_r_wet(:,:) = (dens_aer_dry/(DENSO4(:,:)1000.)/(R2SO4(:,:)/100.))*(1./3.)
123
124	!--calculate mass of air in every grid box
125	DO ilon=1, klon
126	DO ilev=1, klev
127	m_air_gridbox(ilon,ilev)=(paprs(ilon,ilev)-paprs(ilon,ilev+1))/RG*cell_area(ilon)
128	ENDDO
129	ENDDO
130
131	! IF (debutphy) THEN
132	! CALL gather(tr_seri, tr_seri_glo)
133	! IF (MAXVAL(tr_seri_glo).LT.1.e-30) THEN
134	!--initialising tracer concentrations to zero
135	! DO it=1, nbtr
136	! tr_seri(:,:,it)=0.0
137	! ENDDO
138	! ENDIF
139	! ENDIF
140
141	!--initialise emission diagnostics
142	budg_emi_ocs(:)=0.0
143	budg_emi_so2(:)=0.0
144	budg_emi_h2so4(:)=0.0
145	budg_emi_part(:)=0.0
146
147	!--sulfur emission, depending on chosen scenario (flag_sulf_emit)
148	SELECT CASE(flag_sulf_emit)
149
150	CASE(0) ! background aerosol
151	! do nothing (no emission)
152
153	CASE(1) ! volcanic eruption
154	!--only emit on day of eruption
155	! stretch emission over one day of Pinatubo eruption
156	DO ieru=1, nErupt
157	IF (year_cur==year_emit_vol(ieru).AND.mth_cur==mth_emit_vol(ieru).AND.&
158	day_cur>=day_emit_vol(ieru).AND.day_cur<(day_emit_vol(ieru)+injdur)) THEN
159	!
160	! daily injection mass emission - NL
161	m_aer_emiss_vol_daily = m_aer_emiss_vol(ieru)/(REAL(injdur)*REAL(ponde_lonlat_vol(ieru)))
162	WRITE(lunout,*) 'IN traccoag DD m_aer_emiss_vol(ieru)=',m_aer_emiss_vol(ieru), &
163	'ponde_lonlat_vol(ieru)=',ponde_lonlat_vol(ieru),'(injdur*ponde_lonlat_vol(ieru))', &
164	(injdur*ponde_lonlat_vol(ieru)),'m_aer_emiss_vol_daily=',m_aer_emiss_vol_daily,'ieru=',ieru
165	WRITE(lunout,*) 'IN traccoag, dlon=',dlon
166	DO i=1,klon
167	!Pinatubo eruption at 15.14N, 120.35E
168	dlat_loc=180./RPI/2.*(boundslat(i,1)-boundslat(i,3)) ! dlat = half difference of boundary latitudes
169	WRITE(lunout,*) 'IN traccoag, dlat=',dlat_loc
170	IF ( xlat(i).GE.xlat_min_vol(ieru)-dlat_loc .AND. xlat(i).LT.xlat_max_vol(ieru)+dlat_loc .AND. &
171	xlon(i).GE.xlon_min_vol(ieru)-dlon .AND. xlon(i).LT.xlon_max_vol(ieru)+dlon ) THEN
172	!
173	WRITE(lunout,*) 'coordinates of volcanic injection point=',xlat(i),xlon(i),day_cur,mth_cur,year_cur
174	WRITE(lunout,*) 'DD m_aer_emiss_vol_daily=',m_aer_emiss_vol_daily
175	! compute altLMDz
176	altLMDz(:)=0.0
177	DO k=1, klev
178	zrho=pplay(i,k)/t_seri(i,k)/RD !air density in kg/m3
179	zdm(k)=(paprs(i,k)-paprs(i,k+1))/RG !mass of layer in kg
180	zdz=zdm(k)/zrho !thickness of layer in m
181	altLMDz(k+1)=altLMDz(k)+zdz !altitude of interface
182	ENDDO
183
184	SELECT CASE(flag_sulf_emit_distrib)
185
186	CASE(0) ! Gaussian distribution
187	!compute distribution of emission to vertical model layers (based on Gaussian peak in altitude)
188	f_lay_sum=0.0
189	DO k=1, klev
190	f_lay_emiss(k)=0.0
191	DO i_int=1, n_int_alt
192	alt=altLMDz(k)+float(i_int)*(altLMDz(k+1)-altLMDz(k))/float(n_int_alt)
193	f_lay_emiss(k)=f_lay_emiss(k)+1./(sqrt(2.RPI)sigma_alt_vol(ieru))* &
194	& exp(-0.5((alt-altemiss_vol(ieru))/sigma_alt_vol(ieru))2.) &
195	& (altLMDz(k+1)-altLMDz(k))/float(n_int_alt)
196	ENDDO
197	f_lay_sum=f_lay_sum+f_lay_emiss(k)
198	ENDDO
199
200	CASE(1) ! Uniform distribution
201	! In this case, parameter sigma_alt_vol(ieru) is considered to be half the
202	! height of the injection, centered around altemiss_vol(ieru)
203	DO k=1, klev
204	f_lay_emiss(k)=max(min(altemiss_vol(ieru)+sigma_alt_vol(ieru),altLMDz(k+1))- &
205	& max(altemiss_vol(ieru)-sigma_alt_vol(ieru),altLMDz(k)),0.)/(2.*sigma_alt_vol(ieru))
206	f_lay_sum=f_lay_sum+f_lay_emiss(k)
207	ENDDO
208
209	END SELECT ! End CASE over flag_sulf_emit_distrib)
210
211	WRITE(lunout,*) "IN traccoag m_aer_emiss_vol=",m_aer_emiss_vol(ieru)
212	WRITE(lunout,*) "IN traccoag f_lay_emiss=",f_lay_emiss
213	!correct for step integration error
214	f_lay_emiss(:)=f_lay_emiss(:)/f_lay_sum
215	!emission as SO2 gas (with m(SO2)=64/32*m_aer_emiss)
216	!vertically distributed emission
217	DO k=1, klev
218	! stretch emission over one day of Pinatubo eruption
219	emission=m_aer_emiss_vol_daily(mSO2mol/mSatom)/m_air_gridbox(i,k)f_lay_emiss(k)/1./(86400.-pdtphys)
220	tr_seri(i,k,id_SO2_strat)=tr_seri(i,k,id_SO2_strat)+emission*pdtphys
221	budg_emi_so2(i)=budg_emi_so2(i)+emissionzdm(k)mSatom/mSO2mol
222	ENDDO
223	ENDIF ! emission grid cell
224	ENDDO ! klon loop
225	WRITE(lunout,*) "IN traccoag (ieru=",ieru,") m_aer_emiss_vol_daily=",m_aer_emiss_vol_daily
226	ENDIF ! emission period
227	ENDDO ! eruption number
228
229	CASE(2) ! stratospheric aerosol injections (SAI)
230	!
231	DO i=1,klon
232	! SAI standard scenario with continuous emission from 1 grid point at the equator
233	! SAI emission on single month
234	! SAI continuous emission o
235	dlat_loc=180./RPI/2.*(boundslat(i,1)-boundslat(i,3)) ! dlat = half difference of boundary latitudes
236	IF ( xlat(i).GE.xlat_sai-dlat_loc .AND. xlat(i).LT.xlat_sai+dlat_loc .AND. &
237	& xlon(i).GE.xlon_sai-dlon .AND. xlon(i).LT.xlon_sai+dlon ) THEN
238	!
239	! compute altLMDz
240	altLMDz(:)=0.0
241	DO k=1, klev
242	zrho=pplay(i,k)/t_seri(i,k)/RD !air density in kg/m3
243	zdm(k)=(paprs(i,k)-paprs(i,k+1))/RG !mass of layer in kg
244	zdz=zdm(k)/zrho !thickness of layer in m
245	altLMDz(k+1)=altLMDz(k)+zdz !altitude of interface
246	ENDDO
247
248	SELECT CASE(flag_sulf_emit_distrib)
249
250	CASE(0) ! Gaussian distribution
251	!compute distribution of emission to vertical model layers (based on Gaussian peak in altitude)
252	f_lay_sum=0.0
253	DO k=1, klev
254	f_lay_emiss(k)=0.0
255	DO i_int=1, n_int_alt
256	alt=altLMDz(k)+float(i_int)*(altLMDz(k+1)-altLMDz(k))/float(n_int_alt)
257	f_lay_emiss(k)=f_lay_emiss(k)+1./(sqrt(2.RPI)sigma_alt_sai)* &
258	& exp(-0.5((alt-altemiss_sai)/sigma_alt_sai)2.) &
259	& (altLMDz(k+1)-altLMDz(k))/float(n_int_alt)
260	ENDDO
261	f_lay_sum=f_lay_sum+f_lay_emiss(k)
262	ENDDO
263
264	CASE(1) ! Uniform distribution
265	f_lay_sum=0.0
266	! In this case, parameter sigma_alt_vol(ieru) is considered to be half
267	! the height of the injection, centered around altemiss_sai
268	DO k=1, klev
269	f_lay_emiss(k)=max(min(altemiss_sai+sigma_alt_sai,altLMDz(k+1))- &
270	& max(altemiss_sai-sigma_alt_sai,altLMDz(k)),0.)/(2.*sigma_alt_sai)
271	f_lay_sum=f_lay_sum+f_lay_emiss(k)
272	ENDDO
273
274	END SELECT ! Gaussian or uniform distribution
275
276	!correct for step integration error
277	f_lay_emiss(:)=f_lay_emiss(:)/f_lay_sum
278	!emission as SO2 gas (with m(SO2)=64/32*m_aer_emiss)
279	!vertically distributed emission
280	DO k=1, klev
281	! stretch emission over whole year (360d)
282	emission=m_aer_emiss_sai(mSO2mol/mSatom)/m_air_gridbox(i,k)f_lay_emiss(k)/FLOAT(year_len)/86400.
283	tr_seri(i,k,id_SO2_strat)=tr_seri(i,k,id_SO2_strat)+emission*pdtphys
284	budg_emi_so2(i)=budg_emi_so2(i)+emissionzdm(k)mSatom/mSO2mol
285	ENDDO
286
287	! !emission as monodisperse particles with 0.1um dry radius (BIN21)
288	! !vertically distributed emission
289	! DO k=1, klev
290	! ! stretch emission over whole year (360d)
291	! emission=m_aer_emiss(mH2SO4mol/mSatom)/m_part_dry(21)/m_air_gridbox(i,k)f_lay_emiss(k)/FLOAT(year_len)/86400.
292	! tr_seri(i,k,id_BIN01_strat+20)=tr_seri(i,k,id_BIN01_strat+20)+emission*pdtphys
293	! budg_emi_part(i)=budg_emi_part(i)+emissionzdm(k)mSatom/mH2SO4mol
294	! ENDDO
295	ENDIF ! emission grid cell
296	ENDDO ! klon loop
297
298	CASE(3) ! --- SAI injection over a single band of longitude and between
299	! lat_min and lat_max
300
301	DO i=1,klon
302	! SAI scenario with continuous emission
303	dlat_loc=180./RPI/2.*(boundslat(i,1)-boundslat(i,3)) ! dlat = half difference of boundary latitudes
304	theta_min = max(xlat(i)-dlat_loc,xlat_min_sai)
305	theta_max = min(xlat(i)+dlat_loc,xlat_max_sai)
306	IF ( xlat(i).GE.xlat_min_sai-dlat_loc .AND. xlat(i).LT.xlat_max_sai+dlat_loc .AND. &
307	& xlon(i).GE.xlon_sai-dlon .AND. xlon(i).LT.xlon_sai+dlon ) THEN
308	!
309	! compute altLMDz
310	altLMDz(:)=0.0
311	DO k=1, klev
312	zrho=pplay(i,k)/t_seri(i,k)/RD !air density in kg/m3
313	zdm(k)=(paprs(i,k)-paprs(i,k+1))/RG !mass of layer in kg
314	zdz=zdm(k)/zrho !thickness of layer in m
315	altLMDz(k+1)=altLMDz(k)+zdz !altitude of interface
316	ENDDO
317
318	SELECT CASE(flag_sulf_emit_distrib)
319
320	CASE(0) ! Gaussian distribution
321	!compute distribution of emission to vertical model layers (based on
322	!Gaussian peak in altitude)
323	f_lay_sum=0.0
324	DO k=1, klev
325	f_lay_emiss(k)=0.0
326	DO i_int=1, n_int_alt
327	alt=altLMDz(k)+float(i_int)*(altLMDz(k+1)-altLMDz(k))/float(n_int_alt)
328	f_lay_emiss(k)=f_lay_emiss(k)+1./(sqrt(2.RPI)sigma_alt_sai)* &
329	& exp(-0.5((alt-altemiss_sai)/sigma_alt_sai)2.) &
330	& (altLMDz(k+1)-altLMDz(k))/float(n_int_alt)
331	ENDDO
332	f_lay_sum=f_lay_sum+f_lay_emiss(k)
333	ENDDO
334
335	CASE(1) ! Uniform distribution
336	f_lay_sum=0.0
337	! In this case, parameter sigma_alt_vol(ieru) is considered to be half
338	! the height of the injection, centered around altemiss_sai
339	DO k=1, klev
340	f_lay_emiss(k)=max(min(altemiss_sai+sigma_alt_sai,altLMDz(k+1))- &
341	& max(altemiss_sai-sigma_alt_sai,altLMDz(k)),0.)/(2.*sigma_alt_sai)
342	f_lay_sum=f_lay_sum+f_lay_emiss(k)
343	ENDDO
344
345	END SELECT ! Gaussian or uniform distribution
346
347	!correct for step integration error
348	f_lay_emiss(:)=f_lay_emiss(:)/f_lay_sum
349	!emission as SO2 gas (with m(SO2)=64/32*m_aer_emiss)
350	!vertically distributed emission
351	DO k=1, klev
352	! stretch emission over whole year (360d)
353	emission=m_aer_emiss_sai(mSO2mol/mSatom)/m_air_gridbox(i,k)f_lay_emiss(k)/ &
354	& FLOAT(year_len)/86400.(sin(theta_max/180.RPI)-sin(theta_min/180.*RPI))/ &
355	& (sin(xlat_max_sai/180.RPI)-sin(xlat_min_sai/180.RPI))
356	tr_seri(i,k,id_SO2_strat)=tr_seri(i,k,id_SO2_strat)+emission*pdtphys
357	budg_emi_so2(i)=budg_emi_so2(i)+emissionzdm(k)mSatom/mSO2mol
358	ENDDO
359
360	! !emission as monodisperse particles with 0.1um dry radius (BIN21)
361	! !vertically distributed emission
362	! DO k=1, klev
363	! ! stretch emission over whole year (360d)
364	! emission=m_aer_emiss(mH2SO4mol/mSatom)/m_part_dry(21)/m_air_gridbox(i,k)f_lay_emiss(k)/year_len/86400
365	! tr_seri(i,k,id_BIN01_strat+20)=tr_seri(i,k,id_BIN01_strat+20)+emission*pdtphys
366	! budg_emi_part(i)=budg_emi_part(i)+emissionzdm(k)mSatom/mH2SO4mol
367	! ENDDO
368	ENDIF ! emission grid cell
369	ENDDO ! klon loop
370
371	END SELECT ! emission scenario (flag_sulf_emit)
372
373	!--read background concentrations of OCS and SO2 and lifetimes from input file
374	!--update the variables defined in phys_local_var_mod
375	CALL interp_sulf_input(debutphy,pdtphys,paprs,tr_seri)
376
377	!--convert OCS to SO2 in the stratosphere
378	CALL ocs_to_so2(pdtphys,tr_seri,t_seri,pplay,paprs,is_strato)
379
380	!--convert SO2 to H2SO4
381	CALL so2_to_h2so4(pdtphys,tr_seri,t_seri,pplay,paprs,is_strato)
382
383	!--common routine for nucleation and condensation/evaporation with adaptive timestep
384	CALL micphy_tstep(pdtphys,tr_seri,t_seri,pplay,paprs,rh,is_strato)
385
386	!--call coagulation routine
387	CALL coagulate(pdtphys,mdw,tr_seri,t_seri,pplay,dens_aer,is_strato)
388
389	!--call sedimentation routine
390	CALL aer_sedimnt(pdtphys, t_seri, pplay, paprs, tr_seri, dens_aer)
391
392	!--compute mass concentration of PM2.5 sulfate particles (wet diameter and mass) at the surface for health studies
393	surf_PM25_sulf(:)=0.0
394	DO i=1,klon
395	DO it=1, nbtr_bin
396	IF (mdw(it) .LT. 2.5e-6) THEN
397	!surf_PM25_sulf(i)=surf_PM25_sulf(i)+tr_seri(i,1,it+nbtr_sulgas)*m_part(i,1,it) &
398	!assume that particles consist of ammonium sulfate at the surface (132g/mol)
399	!and are dry at T = 20 deg. C and 50 perc. humidity
400	surf_PM25_sulf(i)=surf_PM25_sulf(i)+tr_seri(i,1,it+nbtr_sulgas) &
401	& 132./98.dens_aer_dry4./3.RPI(mdw(it)/2.)*3 &
402	& pplay(i,1)/t_seri(i,1)/RD1.e9
403	ENDIF
404	ENDDO
405	ENDDO
406
407	! CALL minmaxsimple(tr_seri(:,:,id_SO2_strat),0.0,0.0,'fin SO2')
408	! DO it=1, nbtr_bin
409	! CALL minmaxsimple(tr_seri(:,:,nbtr_sulgas+it),0.0,0.0,'fin bin ')
410	! ENDDO
411
412	END SUBROUTINE traccoag
413
414	END MODULE traccoag_mod

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