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traccoag_mod.F90 @ 4976

Last change on this file since 4976 was 4950, checked in by lebasn, 6 months ago
StratAer?: New model version (microphysic, composition routine, code cleaning, new params...)
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1	MODULE traccoag_mod
2	!
3	! This module calculates the concentration of aerosol particles in certain size bins
4	! considering coagulation and sedimentation.
5	!
6	CONTAINS
7
8	SUBROUTINE traccoag(pdtphys, gmtime, debutphy, julien, &
9	presnivs, xlat, xlon, pphis, pphi, &
10	t_seri, pplay, paprs, sh, rh, tr_seri)
11
12	USE phys_local_var_mod, ONLY: mdw, R2SO4, DENSO4, f_r_wet, surf_PM25_sulf, &
13	& budg_emi_ocs, budg_emi_so2, budg_emi_h2so4, budg_emi_part, &
14	& R2SO4B, DENSO4B, f_r_wetB
15
16	USE dimphy
17	USE infotrac_phy, ONLY : nbtr_bin, nbtr_sulgas, nbtr, id_SO2_strat
18	USE aerophys
19	USE geometry_mod, ONLY : cell_area, boundslat
20	USE mod_grid_phy_lmdz
21	USE mod_phys_lmdz_mpi_data, ONLY : is_mpi_root
22	USE mod_phys_lmdz_para, only: gather, scatter
23	USE phys_cal_mod, ONLY : year_len, year_cur, mth_cur, day_cur, hour
24	USE sulfate_aer_mod
25	USE phys_local_var_mod, ONLY: stratomask
26	USE YOMCST
27	USE print_control_mod, ONLY: lunout
28	USE strataer_local_var_mod
29
30	IMPLICIT NONE
31
32	! Input argument
33	!---------------
34	REAL,INTENT(IN) :: pdtphys ! Pas d'integration pour la physique (seconde)
35	REAL,INTENT(IN) :: gmtime ! Heure courante
36	LOGICAL,INTENT(IN) :: debutphy ! le flag de l'initialisation de la physique
37	INTEGER,INTENT(IN) :: julien ! Jour julien
38
39	REAL,DIMENSION(klev),INTENT(IN) :: presnivs! pressions approximat. des milieux couches (en PA)
40	REAL,DIMENSION(klon),INTENT(IN) :: xlat ! latitudes pour chaque point
41	REAL,DIMENSION(klon),INTENT(IN) :: xlon ! longitudes pour chaque point
42	REAL,DIMENSION(klon),INTENT(IN) :: pphis ! geopotentiel du sol
43	REAL,DIMENSION(klon,klev),INTENT(IN) :: pphi ! geopotentiel de chaque couche
44
45	REAL,DIMENSION(klon,klev),INTENT(IN) :: t_seri ! Temperature
46	REAL,DIMENSION(klon,klev),INTENT(IN) :: pplay ! pression pour le mileu de chaque couche (en Pa)
47	REAL,DIMENSION(klon,klev+1),INTENT(IN) :: paprs ! pression pour chaque inter-couche (en Pa)
48	REAL,DIMENSION(klon,klev),INTENT(IN) :: sh ! humidite specifique
49	REAL,DIMENSION(klon,klev),INTENT(IN) :: rh ! humidite relative
50
51	! Output argument
52	!----------------
53	REAL,DIMENSION(klon,klev,nbtr),INTENT(INOUT) :: tr_seri ! Concentration Traceur [U/KgA]
54
55	! Local variables
56	!----------------
57	REAL :: m_aer_emiss_vol_daily ! daily injection mass emission
58	REAL :: m_aer ! aerosol mass
59	INTEGER :: it, k, i, ilon, ilev, itime, i_int, ieru
60	LOGICAL,DIMENSION(klon,klev) :: is_strato ! true = above tropopause, false = below
61	REAL,DIMENSION(klon,klev) :: m_air_gridbox ! mass of air in every grid box [kg]
62	REAL,DIMENSION(klon_glo,klev,nbtr) :: tr_seri_glo ! Concentration Traceur [U/KgA]
63	REAL,DIMENSION(klev+1) :: altLMDz ! altitude of layer interfaces in m
64	REAL,DIMENSION(klev) :: f_lay_emiss ! fraction of emission for every vertical layer
65	REAL :: f_lay_sum ! sum of layer emission fractions
66	REAL :: alt ! altitude for integral calculation
67	INTEGER,PARAMETER :: n_int_alt=10 ! number of subintervals for integration over Gaussian emission profile
68	REAL,DIMENSION(nbtr_bin) :: r_bin ! particle radius in size bin [m]
69	REAL,DIMENSION(nbtr_bin) :: r_lower ! particle radius at lower bin boundary [m]
70	REAL,DIMENSION(nbtr_bin) :: r_upper ! particle radius at upper bin boundary [m]
71	REAL,DIMENSION(nbtr_bin) :: m_part_dry ! mass of one dry particle in size bin [kg]
72	REAL :: zrho ! Density of air [kg/m3]
73	REAL :: zdz ! thickness of atm. model layer in m
74	REAL,DIMENSION(klev) :: zdm ! mass of atm. model layer in kg
75	REAL,DIMENSION(klon,klev) :: dens_aer ! density of aerosol particles [kg/m3 aerosol] with default H2SO4 mass fraction
76	REAL :: emission ! emission
77	REAL :: theta_min, theta_max ! for SAI computation between two latitudes
78	REAL :: dlat_loc
79	REAL :: latmin,latmax,lonmin,lonmax ! lat/lon min/max for injection
80	REAL :: sigma_alt, altemiss ! injection altitude + sigma for distrib
81	REAL :: pdt,stretchlong ! physic timestep, stretch emission over one day
82
83	INTEGER :: injdur_sai ! injection duration for SAI case [days]
84	INTEGER :: yr, is_bissext
85
86	IF (is_mpi_root .AND. flag_verbose_strataer) THEN
87	WRITE(lunout,*) 'in traccoag: date from phys_cal_mod =',year_cur,'-',mth_cur,'-',day_cur,'-',hour
88	WRITE(lunout,*) 'IN traccoag flag_emit: ',flag_emit
89	ENDIF
90
91	! radius [m]
92	DO it=1, nbtr_bin
93	r_bin(it)=mdw(it)/2.
94	ENDDO
95
96	!--set boundaries of size bins
97	DO it=1, nbtr_bin
98	IF (it.EQ.1) THEN
99	r_upper(it)=sqrt(r_bin(it+1)*r_bin(it))
100	r_lower(it)=r_bin(it)**2./r_upper(it)
101	ELSEIF (it.EQ.nbtr_bin) THEN
102	r_lower(it)=sqrt(r_bin(it)*r_bin(it-1))
103	r_upper(it)=r_bin(it)**2./r_lower(it)
104	ELSE
105	r_lower(it)=sqrt(r_bin(it)*r_bin(it-1))
106	r_upper(it)=sqrt(r_bin(it+1)*r_bin(it))
107	ENDIF
108	ENDDO
109
110	IF (debutphy .and. is_mpi_root) THEN
111	DO it=1, nbtr_bin
112	WRITE(lunout,*) 'radius bin', it, ':', r_bin(it), '(from', r_lower(it), 'to', r_upper(it), ')'
113	ENDDO
114	ENDIF
115
116	!--initialising logical is_strato from stratomask
117	is_strato(:,:)=.FALSE.
118	WHERE (stratomask.GT.0.5) is_strato=.TRUE.
119
120	IF(flag_new_strat_compo) THEN
121	IF(debutphy) WRITE(lunout,*) 'traccoag: COMPO/DENSITY (Tabazadeh 97) + H2O kelvin effect', flag_new_strat_compo
122	! STRACOMP (H2O, P, t_seri, R -> R2SO4 + Kelvin effect) : Taba97, Socol, etc...
123	CALL stracomp_kelvin(sh,t_seri,pplay)
124	ELSE
125	IF(debutphy) WRITE(lunout,*) 'traccoag: COMPO from Bekki 2D model', flag_new_strat_compo
126	! STRACOMP (H2O, P, t_seri -> aerosol composition (R2SO4))
127	! H2SO4 mass fraction in aerosol (%)
128	CALL stracomp(sh,t_seri,pplay)
129
130	! aerosol density (gr/cm3)
131	CALL denh2sa(t_seri)
132
133	! compute factor for converting dry to wet radius (for every grid box)
134	f_r_wet(:,:) = (dens_aer_dry/(DENSO4(:,:)1000.)/(R2SO4(:,:)/100.))*(1./3.)
135	ENDIF
136
137	!--calculate mass of air in every grid box
138	DO ilon=1, klon
139	DO ilev=1, klev
140	m_air_gridbox(ilon,ilev)=(paprs(ilon,ilev)-paprs(ilon,ilev+1))/RG*cell_area(ilon)
141	ENDDO
142	ENDDO
143
144	!--initialise emission diagnostics
145	if (nErupt > 0 .and. (flag_emit == 1 .or. flag_emit == 4)) budg_emi(:,1)=0.0
146	budg_emi_ocs(:)=0.0
147	budg_emi_so2(:)=0.0
148	budg_emi_h2so4(:)=0.0
149	budg_emi_part(:)=0.0
150
151	!--sulfur emission, depending on chosen scenario (flag_emit)
152	SELECT CASE(flag_emit)
153
154	CASE(0) ! background aerosol
155	! do nothing (no emission)
156
157	CASE(1) ! volcanic eruption
158	!--only emit on day of eruption
159	! stretch emission over one day of Pinatubo eruption
160	DO ieru=1, nErupt
161	IF (year_cur==year_emit_vol(ieru).AND.mth_cur==mth_emit_vol(ieru).AND.&
162	day_cur>=day_emit_vol(ieru).AND.day_cur<(day_emit_vol(ieru)+injdur)) THEN
163
164	! daily injection mass emission
165	m_aer=m_aer_emiss_vol(ieru,1)/(REAL(injdur)*REAL(ponde_lonlat_vol(ieru)))
166	!emission as SO2 gas (with m(SO2)=64/32*m_aer_emiss)
167	m_aer=m_aer*(mSO2mol/mSatom)
168
169	WRITE(lunout,*) 'IN traccoag m_aer_emiss_vol(ieru)=',m_aer_emiss_vol(ieru,1), &
170	'ponde_lonlat_vol(ieru)=',ponde_lonlat_vol(ieru),'(injdur*ponde_lonlat_vol(ieru))', &
171	(injdur*ponde_lonlat_vol(ieru)),'m_aer_emiss_vol_daily=',m_aer,'ieru=',ieru
172	WRITE(lunout,*) 'IN traccoag, dlon=',dlon
173
174	latmin=xlat_min_vol(ieru)
175	latmax=xlat_max_vol(ieru)
176	lonmin=xlon_min_vol(ieru)
177	lonmax=xlon_max_vol(ieru)
178	altemiss = altemiss_vol(ieru)
179	sigma_alt = sigma_alt_vol(ieru)
180	pdt=pdtphys
181	! stretch emission over one day of eruption
182	stretchlong = 1.
183
184	CALL STRATEMIT(pdtphys,pdt,xlat,xlon,t_seri,pplay,paprs,tr_seri,&
185	m_aer,latmin,latmax,lonmin,lonmax,altemiss,sigma_alt,id_SO2_strat, &
186	stretchlong,1,0)
187
188	ENDIF ! emission period
189	ENDDO ! eruption number
190
191	CASE(2) ! stratospheric aerosol injections (SAI)
192	!
193	! Computing duration of SAI in days...
194	! ... starting from 0...
195	injdur_sai = 0
196	! ... then adding whole years from first to (n-1)th...
197	DO yr = year_emit_sai_start, year_emit_sai_end-1
198	! (n % 4 == 0) and (n % 100 != 0 or n % 400 == 0)
199	is_bissext = (MOD(yr,4)==0) .AND. (MOD(yr,100) /= 0 .OR. MOD(yr,400) == 0)
200	injdur_sai = injdur_sai+365+is_bissext
201	ENDDO
202	! ... then subtracting part of the first year where no injection yet...
203	is_bissext = (MOD(year_emit_sai_start,4)==0) .AND. (MOD(year_emit_sai_start,100) /= 0 .OR. MOD(year_emit_sai_start,400) == 0)
204	SELECT CASE(mth_emit_sai_start)
205	CASE(2)
206	injdur_sai = injdur_sai-31
207	CASE(3)
208	injdur_sai = injdur_sai-31-28-is_bissext
209	CASE(4)
210	injdur_sai = injdur_sai-31-28-is_bissext-31
211	CASE(5)
212	injdur_sai = injdur_sai-31-28-is_bissext-31-30
213	CASE(6)
214	injdur_sai = injdur_sai-31-28-is_bissext-31-30-31
215	CASE(7)
216	injdur_sai = injdur_sai-31-28-is_bissext-31-30-31-30
217	CASE(8)
218	injdur_sai = injdur_sai-31-28-is_bissext-31-30-31-30-31
219	CASE(9)
220	injdur_sai = injdur_sai-31-28-is_bissext-31-30-31-30-31-31
221	CASE(10)
222	injdur_sai = injdur_sai-31-28-is_bissext-31-30-31-30-31-31-30
223	CASE(11)
224	injdur_sai = injdur_sai-31-28-is_bissext-31-30-31-30-31-31-30-31
225	CASE(12)
226	injdur_sai = injdur_sai-31-28-is_bissext-31-30-31-30-31-31-30-31-30
227	END SELECT
228	injdur_sai = injdur_sai-day_emit_sai_start+1
229	! ... then adding part of the n-th year
230	is_bissext = (MOD(year_emit_sai_end,4)==0) .AND. (MOD(year_emit_sai_end,100) /= 0 .OR. MOD(year_emit_sai_end,400) == 0)
231	SELECT CASE(mth_emit_sai_end)
232	CASE(2)
233	injdur_sai = injdur_sai+31
234	CASE(3)
235	injdur_sai = injdur_sai+31+28+is_bissext
236	CASE(4)
237	injdur_sai = injdur_sai+31+28+is_bissext+31
238	CASE(5)
239	injdur_sai = injdur_sai+31+28+is_bissext+31+30
240	CASE(6)
241	injdur_sai = injdur_sai+31+28+is_bissext+31+30+31
242	CASE(7)
243	injdur_sai = injdur_sai+31+28+is_bissext+31+30+31+30
244	CASE(8)
245	injdur_sai = injdur_sai+31+28+is_bissext+31+30+31+30+31
246	CASE(9)
247	injdur_sai = injdur_sai+31+28+is_bissext+31+30+31+30+31+31
248	CASE(10)
249	injdur_sai = injdur_sai+31+28+is_bissext+31+30+31+30+31+31+30
250	CASE(11)
251	injdur_sai = injdur_sai+31+28+is_bissext+31+30+31+30+31+31+30+31
252	CASE(12)
253	injdur_sai = injdur_sai+31+28+is_bissext+31+30+31+30+31+31+30+31+30
254	END SELECT
255	injdur_sai = injdur_sai+day_emit_sai_end
256	! A security: are SAI dates of injection consistent?
257	IF (injdur_sai <= 0) THEN
258	CALL abort_physic('traccoag_mod', 'Pb in SAI dates of injection.',1)
259	ENDIF
260	! Injection in itself
261	IF (( year_emit_sai_start <= year_cur ) &
262	.AND. ( year_cur <= year_emit_sai_end ) &
263	.AND. ( mth_emit_sai_start <= mth_cur .OR. year_emit_sai_start < year_cur ) &
264	.AND. ( mth_cur <= mth_emit_sai_end .OR. year_cur < year_emit_sai_end ) &
265	.AND. ( day_emit_sai_start <= day_cur .OR. mth_emit_sai_start < mth_cur .OR. year_emit_sai_start < year_cur ) &
266	.AND. ( day_cur <= day_emit_sai_end .OR. mth_cur < mth_emit_sai_end .OR. year_cur < year_emit_sai_end )) THEN
267
268	m_aer=m_aer_emiss_sai
269	!emission as SO2 gas (with m(SO2)=64/32*m_aer_emiss)
270	m_aer=m_aer*(mSO2mol/mSatom)
271
272	latmin=xlat_sai
273	latmax=xlat_sai
274	lonmin=xlon_sai
275	lonmax=xlon_sai
276	altemiss = altemiss_sai
277	sigma_alt = sigma_alt_sai
278	pdt=0.
279	! stretch emission over whole year (360d)
280	stretchlong=FLOAT(year_len)
281
282	CALL STRATEMIT(pdtphys,pdt,xlat,xlon,t_seri,pplay,paprs,m_air_gridbox,tr_seri,&
283	m_aer,latmin,latmax,lonmin,lonmax,altemiss,sigma_alt,id_SO2_strat, &
284	stretchlong,1,0)
285
286	budg_emi_so2(:) = budg_emi(:,1)*mSatom/mSO2mol
287	ENDIF ! Condition over injection dates
288
289	CASE(3) ! --- SAI injection over a single band of longitude and between
290	! lat_min and lat_max
291
292	m_aer=m_aer_emiss_sai
293	!emission as SO2 gas (with m(SO2)=64/32*m_aer_emiss)
294	m_aer=m_aer*(mSO2mol/mSatom)
295
296	latmin=xlat_min_sai
297	latmax=xlat_max_sai
298	lonmin=xlon_sai
299	lonmax=xlon_sai
300	altemiss = altemiss_sai
301	sigma_alt = sigma_alt_sai
302	pdt=0.
303	! stretch emission over whole year (360d)
304	stretchlong=FLOAT(year_len)
305
306	CALL STRATEMIT(pdtphys,pdt,xlat,xlon,t_seri,pplay,paprs,m_air_gridbox,tr_seri,&
307	m_aer,latmin,latmax,lonmin,lonmax,altemiss,sigma_alt,id_SO2_strat, &
308	stretchlong,1,0)
309
310	budg_emi_so2(:) = budg_emi(:,1)*mSatom/mSO2mol
311
312	END SELECT ! emission scenario (flag_emit)
313
314	!--read background concentrations of OCS and SO2 and lifetimes from input file
315	!--update the variables defined in phys_local_var_mod
316	CALL interp_sulf_input(debutphy,pdtphys,paprs,tr_seri)
317
318	!--convert OCS to SO2 in the stratosphere
319	CALL ocs_to_so2(pdtphys,tr_seri,t_seri,pplay,paprs,is_strato)
320
321	!--convert SO2 to H2SO4
322	CALL so2_to_h2so4(pdtphys,tr_seri,t_seri,pplay,paprs,is_strato)
323
324	!--common routine for nucleation and condensation/evaporation with adaptive timestep
325	CALL micphy_tstep(pdtphys,tr_seri,t_seri,pplay,paprs,rh,is_strato)
326
327	!--call coagulation routine
328	CALL coagulate(pdtphys,mdw,tr_seri,t_seri,pplay,dens_aer,is_strato)
329
330	!--call sedimentation routine
331	CALL aer_sedimnt(pdtphys, t_seri, pplay, paprs, tr_seri, dens_aer)
332
333	!--compute mass concentration of PM2.5 sulfate particles (wet diameter and mass) at the surface for health studies
334	surf_PM25_sulf(:)=0.0
335	DO i=1,klon
336	DO it=1, nbtr_bin
337	IF (mdw(it) .LT. 2.5e-6) THEN
338	!surf_PM25_sulf(i)=surf_PM25_sulf(i)+tr_seri(i,1,it+nbtr_sulgas)*m_part(i,1,it) &
339	!assume that particles consist of ammonium sulfate at the surface (132g/mol)
340	!and are dry at T = 20 deg. C and 50 perc. humidity
341	surf_PM25_sulf(i)=surf_PM25_sulf(i)+tr_seri(i,1,it+nbtr_sulgas) &
342	& 132./98.dens_aer_dry4./3.RPI(mdw(it)/2.)*3 &
343	& pplay(i,1)/t_seri(i,1)/RD1.e9
344	ENDIF
345	ENDDO
346	ENDDO
347
348	END SUBROUTINE traccoag
349
350	END MODULE traccoag_mod

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