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rocketduststorm_mod.F90 @ 2627

Last change on this file since 2627 was 2616, checked in by romain.vande, 3 years ago
LMDZ_MARS RV : Open_MP; Put all the "save" variables as "!$OMP THREADPRIVATE" in phymars. The code can now be tested, see README for more info
File size: 31.0 KB

Rev	Line
[1974]	1	MODULE rocketduststorm_mod
	2
	3	IMPLICIT NONE
	4
	5	REAL, SAVE, ALLOCATABLE :: dustliftday(:) ! dust lifting rate (s-1)
[2584]	6
	7	!$OMP THREADPRIVATE(dustliftday)
[1974]	8
	9	CONTAINS
	10
	11	!=======================================================================
	12	! ROCKET DUST STORM - vertical transport and detrainment
	13	!=======================================================================
[2079]	14	! calculation of the vertical flux
[2201]	15	! call of van_leer : Van Leer transport scheme of the dust tracers
[2079]	16	! detrainement of stormdust in the background dust
[1974]	17	! -----------------------------------------------------------------------
[2079]	18	! Authors: M. Vals; C. Wang; F. Forget; T. Bertrand
[1974]	19	! Institution: Laboratoire de Meteorologie Dynamique (LMD) Paris, France
	20	! -----------------------------------------------------------------------
	21
	22	SUBROUTINE rocketduststorm(ngrid,nlayer,nq,ptime,ptimestep, &
	23	pq,pdqfi,pt,pdtfi,pplev,pplay,pzlev, &
	24	pzlay,pdtsw,pdtlw, &
	25	! input for radiative transfer
	26	clearatm,icount,zday,zls, &
	27	tsurf,igout,totstormfract, &
[2417]	28	tauscaling,dust_rad_adjust, &
[1974]	29	! input sub-grid scale cloud
	30	clearsky,totcloudfrac, &
[2199]	31	! input sub-grid scale topography
	32	nohmons,alpha_hmons, &
[2079]	33	! output
[2246]	34	pdqrds,wrad,dsodust,dsords,dsotop, &
[2415]	35	tau_pref_scenario,tau_pref_gcm)
[1974]	36
[2079]	37	USE tracer_mod, only: igcm_stormdust_mass,igcm_stormdust_number &
[1974]	38	,igcm_dust_mass,igcm_dust_number &
	39	,rho_dust
	40	USE comcstfi_h, only: r,g,cpp,rcp
[2079]	41	USE dimradmars_mod, only: albedo,naerkind
	42	USE comsaison_h, only: dist_sol,mu0,fract
	43	USE surfdat_h, only: emis,co2ice,zmea, zstd, zsig, hmons
[2226]	44	USE callradite_mod, only: callradite
[2079]	45	IMPLICIT NONE
[1974]	46
[2160]	47	include "callkeys.h"
	48
[1974]	49	!--------------------------------------------------------
	50	! Input Variables
	51	!--------------------------------------------------------
	52
	53	INTEGER, INTENT(IN) :: ngrid ! number of horizontal grid points
	54	INTEGER, INTENT(IN) :: nlayer ! number of vertical grid points
	55	INTEGER, INTENT(IN) :: nq ! number of tracer species
	56	REAL, INTENT(IN) :: ptime
	57	REAL, INTENT(IN) :: ptimestep
	58
	59	REAL, INTENT(IN) :: pq(ngrid,nlayer,nq) ! advected field nq
	60	REAL, INTENT(IN) :: pdqfi(ngrid,nlayer,nq)! tendancy field pq
	61	REAL, INTENT(IN) :: pt(ngrid,nlayer) ! temperature at mid-layer (K)
	62	REAL, INTENT(IN) :: pdtfi(ngrid,nlayer) ! tendancy temperature at mid-layer (K)
	63
	64	REAL, INTENT(IN) :: pplay(ngrid,nlayer) ! pressure at middle of the layers
	65	REAL, INTENT(IN) :: pplev(ngrid,nlayer+1) ! pressure at intermediate levels
	66	REAL, INTENT(IN) :: pzlay(ngrid,nlayer) ! altitude at the middle of the layers
	67	REAL, INTENT(IN) :: pzlev(ngrid,nlayer+1) ! altitude at layer boundaries
	68
	69	REAL, INTENT(IN) :: pdtsw(ngrid,nlayer) ! (K/s) env
	70	REAL, INTENT(IN) :: pdtlw(ngrid,nlayer) ! (K/s) env
	71
	72	! input for second radiative transfer
[2079]	73	LOGICAL, INTENT(IN) :: clearatm
[1974]	74	INTEGER, INTENT(INOUT) :: icount
[2079]	75	REAL, INTENT(IN) :: zday
	76	REAL, INTENT(IN) :: zls
	77	REAL, INTENT(IN) :: tsurf(ngrid)
	78	INTEGER, INTENT(IN) :: igout
	79	REAL, INTENT(IN) :: totstormfract(ngrid)
[2226]	80	REAL, INTENT(INOUT) :: tauscaling(ngrid)
[2417]	81	REAL,INTENT(OUT) :: dust_rad_adjust(ngrid)
[2079]	82
[1974]	83	! sbgrid scale water ice clouds
	84	logical, intent(in) :: clearsky
[2199]	85	real, intent(in) :: totcloudfrac(ngrid)
	86
	87	! sbgrid scale topography
	88	LOGICAL, INTENT(IN) :: nohmons
	89	REAL, INTENT(IN) :: alpha_hmons(ngrid)
[1974]	90
	91	!--------------------------------------------------------
	92	! Output Variables
	93	!--------------------------------------------------------
	94
	95	REAL, INTENT(OUT) :: pdqrds(ngrid,nlayer,nq) ! tendancy field for dust when detraining
[2079]	96	REAL, INTENT(OUT) :: wrad(ngrid,nlayer+1) ! vertical speed within the rocket dust storm
[2415]	97	REAL, INTENT(OUT) :: dsodust(ngrid,nlayer) ! density scaled opacity of env. dust
	98	REAL, INTENT(OUT) :: dsords(ngrid,nlayer) ! density scaled opacity of storm dust
	99	REAL, INTENT(OUT) :: dsotop(ngrid,nlayer) ! density scaled opacity of topmons dust
	100	REAL,INTENT(OUT) :: tau_pref_scenario(ngrid) ! prescribed dust column
	101	! visible opacity at odpref
	102	REAL,INTENT(OUT) :: tau_pref_gcm(ngrid) ! dust column visible opacity at
	103	! odpref in the GCM
[1974]	104	!--------------------------------------------------------
	105	! Local variables
	106	!--------------------------------------------------------
[2201]	107	INTEGER l,ig,iq,ll
[2079]	108	! local variables from callradite.F
[1974]	109	REAL zdtlw1(ngrid,nlayer) ! (K/s) storm
	110	REAL zdtsw1(ngrid,nlayer) ! (K/s) storm
	111	REAL zt(ngrid,nlayer) ! actual temperature at mid-layer (K)
[2091]	112	REAL zdtvert(ngrid,nlayer) ! dT/dz , lapse rate
	113	REAL ztlev(ngrid,nlayer) ! temperature at intermediate levels l+1/2 without last level
[1974]	114
[2079]	115	REAL zdtlw1_lev(nlayer),zdtsw1_lev(nlayer) ! rad. heating rate at intermediate levels l+1/2 for stormdust
	116	REAL zdtlw_lev(nlayer),zdtsw_lev(nlayer) ! rad. heating rate at intermediate levels l+1/2 for background dust
[1974]	117
[2079]	118	REAL zq_stormdust_mass(ngrid,nlayer) ! intermediate tracer stormdust mass
	119	REAL zq_stormdust_number(ngrid,nlayer) ! intermediate tracer stormdust number
	120	REAL zq_dust_mass(ngrid,nlayer) ! intermediate tracer dust mass
	121	REAL zq_dust_number(ngrid,nlayer) ! intermediate tracer dust number
[1974]	122
[2079]	123	REAL mr_stormdust_mass(ngrid,nlayer) ! intermediate mixing ratio to calculate van leer transport with the "real" concentration (stormdust mass)
	124	REAL mr_stormdust_number(ngrid,nlayer) ! intermediate mixing ratio to calculate van leer transport with the "real" concentration (stormdust number)
	125	REAL mr_dust_mass(ngrid,nlayer) ! intermediate mixing ratio to calculate van leer transport with the "real" concentration (dust mass)
	126	REAL mr_dust_number(ngrid,nlayer) ! intermediate mixing ratio to calculate van leer transport with the "real" concentration (sdust number)
	127
	128	REAL dqvl_stormdust_mass(ngrid,nlayer) ! tendancy of vertical transport (stormdust mass)
	129	REAL dqvl_stormdust_number(ngrid,nlayer) ! tendancy of vertical transport (stormdust number)
	130	REAL dqvl_dust_mass(ngrid,nlayer) ! tendancy of vertical transport (dust mass)
	131	REAL dqvl_dust_number(ngrid,nlayer) ! tendancy of vertical transport (dust number)
	132	REAL dqdet_stormdust_mass(ngrid,nlayer) ! tendancy of detrainement (stormdust mass)
	133	REAL dqdet_stormdust_number(ngrid,nlayer) ! tendancy of detrainement (stormdust number)
[1974]	134
[2090]	135	REAL masse_col(nlayer) ! mass of atmosphere (kg/m2)
[1974]	136	REAL zq(ngrid,nlayer,nq) ! updated tracers
	137
[2090]	138	REAL w(ngrid,nlayer) ! air mass flux (calculated with the vertical wind velocity profile) used as input in Van Leer (kgair/m2)
	139	REAL wqmass(ngrid,nlayer+1) ! tracer (dust_mass) mass flux in Van Leer (kg/m2)
	140	REAL wqnumber(ngrid,nlayer+1) ! tracer (dust_number) mass flux in Van Leer (kg/m2)
[1974]	141
[2079]	142	LOGICAL storm(ngrid) ! true when there is a dust storm (if the opacity is high): trigger the rocket dust storm scheme
[2160]	143	REAL detrain(ngrid,nlayer) ! coefficient for detrainment : % of stormdust detrained
[2079]	144	INTEGER scheme(ngrid) ! triggered scheme
	145
	146	REAL,PARAMETER:: coefmin =0.025 ! 0<coefmin<1 Minimum fraction of stormdust detrained
[2201]	147	REAL,PARAMETER:: wmin =0.25 ! stormdust detrainment if wrad < wmin
[2079]	148	REAL,PARAMETER:: wmax =10. ! maximum vertical velocity of the rocket dust storms (m/s)
[2201]	149
	150	! subtimestep
	151	INTEGER tsub
	152	INTEGER nsubtimestep !number of subtimestep when calling van_leer
	153	REAL subtimestep !ptimestep/nsubtimestep
	154	REAL dtmax !considered time needed for dust to cross one layer
	155	REAL,PARAMETER:: secu=3.!3. !coefficient on wspeed to avoid dust crossing many layers during subtimestep
	156
[2079]	157	! diagnostics
	158	REAL lapserate(ngrid,nlayer)
	159	REAL deltahr(ngrid,nlayer+1)
[1974]	160
[2079]	161	LOGICAL,SAVE :: firstcall=.true.
[2616]	162
	163	!$OMP THREADPRIVATE(firstcall)
[2079]	164
	165	! variables for the radiative transfer
[1974]	166	REAL fluxsurf_lw1(ngrid)
	167	REAL fluxsurf_sw1(ngrid,2)
	168	REAL fluxtop_lw1(ngrid)
	169	REAL fluxtop_sw1(ngrid,2)
	170	REAL tau(ngrid,naerkind)
	171	REAL aerosol(ngrid,nlayer,naerkind)
	172	REAL taucloudtes(ngrid)
	173	REAL rdust(ngrid,nlayer)
	174	REAL rstormdust(ngrid,nlayer)
[2199]	175	REAL rtopdust(ngrid,nlayer)
[1974]	176	REAL rice(ngrid,nlayer)
	177	REAL nuice(ngrid,nlayer)
[2459]	178	DOUBLE PRECISION riceco2(ngrid,nlayer)
[2448]	179	REAL nuiceco2(ngrid,nlayer)
[1974]	180
	181	! **********************************************************************
	182	! **********************************************************************
[2079]	183	! Rocket dust storm parametrization to reproduce the detached dust layers
	184	! during the dust storm season:
[1974]	185	! The radiative warming due to the presence of storm dust is
	186	! balanced by the adiabatic cooling. The tracer "storm dust"
	187	! is transported by the upward/downward flow.
	188	! **********************************************************************
	189	! **********************************************************************
	190	!! 1. Radiative transfer in storm dust
	191	!! 2. Compute vertical velocity for storm dust
[2079]	192	!! case 1 storm = false: nothing to do
	193	!! case 2 rocket dust storm (storm=true)
	194	!! 3. Vertical transport (Van Leer)
[1974]	195	!! 4. Detrainment
	196	! **********************************************************************
	197	! **********************************************************************
	198
	199
	200	! **********************************************************************
[2079]	201	! Initializations
[1974]	202	! **********************************************************************
	203	storm(:)=.false.
	204	pdqrds(:,:,:) = 0.
[2079]	205	mr_dust_mass(:,:)=0.
	206	mr_dust_number(:,:)=0.
	207	mr_stormdust_mass(:,:)=0.
	208	mr_stormdust_number(:,:)=0.
	209	dqvl_dust_mass(:,:)=0.
	210	dqvl_dust_number(:,:)=0.
	211	dqvl_stormdust_mass(:,:)=0.
	212	dqvl_stormdust_number(:,:)=0.
	213	dqdet_stormdust_mass(:,:)=0.
	214	dqdet_stormdust_number(:,:)=0.
	215	wrad(:,:)=0.
[2090]	216	w(:,:)=0.
	217	wqmass(:,:)=0.
	218	wqnumber(:,:)=0.
[2091]	219	zdtvert(:,:)=0.
[1974]	220	lapserate(:,:)=0.
	221	deltahr(:,:)=0.
	222	scheme(:)=0
[2160]	223	detrain(:,:)=1.
[2083]	224
[1974]	225	!! no update for the stormdust tracer and temperature fields
	226	!! because previous callradite was for background dust
	227	zq(1:ngrid,1:nlayer,1:nq)=pq(1:ngrid,1:nlayer,1:nq)
	228	zt(1:ngrid,1:nlayer)=pt(1:ngrid,1:nlayer)
	229
	230
[2079]	231	zq_dust_mass(1:ngrid,1:nlayer)=zq(1:ngrid,1:nlayer,igcm_dust_mass)
	232	zq_dust_number(1:ngrid,1:nlayer)=zq(1:ngrid,1:nlayer,igcm_dust_number)
	233	zq_stormdust_mass(1:ngrid,1:nlayer)=zq(1:ngrid,1:nlayer,igcm_stormdust_mass)
	234	zq_stormdust_number(1:ngrid,1:nlayer)=zq(1:ngrid,1:nlayer,igcm_stormdust_number)
	235
	236	! *********************************************************************
	237	! 0. Check if there is a storm
	238	! *********************************************************************
	239	DO ig=1,ngrid
[1974]	240	storm(ig)=.false.
[2079]	241	DO l=1,nlayer
	242	IF (zq(ig,l,igcm_stormdust_mass) &
	243	.gt. zq(ig,l,igcm_dust_mass)*(1.E-4)) THEN
[1974]	244	storm(ig)=.true.
[2079]	245	EXIT
	246	ENDIF
	247	ENDDO
	248	ENDDO
[1974]	249
	250	! *********************************************************************
	251	! 1. Call the second radiative transfer for stormdust, obtain the extra heating
	252	! *********************************************************************
[2199]	253	CALL callradite(icount,ngrid,nlayer,nq,zday,zls,pq,albedo, &
	254	emis,mu0,pplev,pplay,pt,tsurf,fract,dist_sol,igout, &
	255	zdtlw1,zdtsw1,fluxsurf_lw1,fluxsurf_sw1,fluxtop_lw1, &
[2415]	256	fluxtop_sw1,tau_pref_scenario,tau_pref_gcm, &
[2417]	257	tau,aerosol,dsodust,tauscaling,dust_rad_adjust, &
[2448]	258	taucloudtes,rdust,rice,nuice,riceco2,nuiceco2,co2ice,rstormdust,rtopdust, &
[2246]	259	totstormfract,clearatm,dsords,dsotop,alpha_hmons,nohmons,&
[1974]	260	clearsky,totcloudfrac)
	261
	262	! **********************************************************************
	263	! 2. Compute vertical velocity for storm dust
[2079]	264	! **********************************************************************
[1974]	265	!! **********************************************************************
[2079]	266	!! 2.1 Nothing to do when no storm
	267	!! no storm
	268	DO ig=1,ngrid
	269	IF (.NOT.(storm(ig))) then
	270	scheme(ig)=1
	271	cycle
	272	ENDIF ! IF (storm(ig))
	273	ENDDO ! DO ig=1,ngrid
[1974]	274
[2079]	275	!! **********************************************************************
	276	!! 2.2 Calculation of the extra heating : computing heating rates
	277	!! gradient at boundaries of each layer, start from surface
	278	DO ig=1,ngrid
[2091]	279	IF (storm(ig)) THEN
	280
	281	scheme(ig)=2
[1974]	282
[2091]	283	!! computing heating rates gradient at boundraies of each layer
	284	!! start from surface
	285	zdtlw1_lev(1)=0.
	286	zdtsw1_lev(1)=0.
	287	zdtlw_lev(1)=0.
	288	zdtsw_lev(1)=0.
	289	ztlev(ig,1)=zt(ig,1)
[1974]	290
[2091]	291	DO l=1,nlayer-1
	292	!! Calculation for the dust storm fraction
	293	zdtlw1_lev(l+1)=(zdtlw1(ig,l)*(pzlay(ig,l+1)-pzlev(ig,l+1))+ &
	294	zdtlw1(ig,l+1)*(pzlev(ig,l+1)-pzlay(ig,l))) / &
	295	(pzlay(ig,l+1)-pzlay(ig,l))
	296
	297	zdtsw1_lev(l+1)=(zdtsw1(ig,l)*(pzlay(ig,l+1)-pzlev(ig,l+1))+ &
	298	zdtsw1(ig,l+1)*(pzlev(ig,l+1)-pzlay(ig,l))) / &
	299	(pzlay(ig,l+1)-pzlay(ig,l))
	300	!! Calculation for the background dust fraction
	301	zdtlw_lev(l+1)=(pdtlw(ig,l)*(pzlay(ig,l+1)-pzlev(ig,l+1))+ &
	302	pdtlw(ig,l+1)*(pzlev(ig,l+1)-pzlay(ig,l))) / &
	303	(pzlay(ig,l+1)-pzlay(ig,l))
[2079]	304
[2091]	305	zdtsw_lev(l+1)=(pdtsw(ig,l)*(pzlay(ig,l+1)-pzlev(ig,l+1))+ &
	306	pdtsw(ig,l+1)*(pzlev(ig,l+1)-pzlay(ig,l))) / &
	307	(pzlay(ig,l+1)-pzlay(ig,l))
[2079]	308
[2091]	309	ztlev(ig,l+1)=(zt(ig,l)*(pzlay(ig,l+1)-pzlev(ig,l+1))+ &
	310	zt(ig,l+1)*(pzlev(ig,l+1)-pzlay(ig,l))) / &
	311	(pzlay(ig,l+1)-pzlay(ig,l))
[2201]	312	ENDDO ! DO l=1,nlayer-1
[1974]	313
[2201]	314	!! This is the env. lapse rate
	315	zdtvert(ig,1)=0.
	316	DO l=1,nlayer-1
	317	zdtvert(ig,l+1)=(ztlev(ig,l+1)-ztlev(ig,l))/(pzlay(ig,l+1)-pzlay(ig,l))
	318	lapserate(ig,l+1)=zdtvert(ig,l+1)
	319	ENDDO
	320
[2091]	321	!! **********************************************************************
	322	!! 2.3 Calculation of the vertical velocity : extra heating
	323	!! balanced by adiabatic cooling
	324
[2079]	325	DO l=1,nlayer
	326	deltahr(ig,l)=(zdtlw1_lev(l)+zdtsw1_lev(l)) &
	327	-(zdtlw_lev(l)+zdtsw_lev(l))
	328	wrad(ig,l)=-deltahr(ig,l)/(g/cpp+ &
[2091]	329	max(zdtvert(ig,l),-0.99*g/cpp))
[2079]	330	!! Limit vertical wind in case of lapse rate close to adiabatic
	331	wrad(ig,l)=max(wrad(ig,l),-wmax)
	332	wrad(ig,l)=min(wrad(ig,l),wmax)
	333	ENDDO
[2091]	334
[2079]	335	ENDIF ! IF (storm(ig))
	336	ENDDO ! DO ig=1,ngrid
[1974]	337
	338	! **********************************************************************
	339	! 3. Vertical transport
	340	! **********************************************************************
[2079]	341	!! **********************************************************************
	342	!! 3.1 Transport of background dust + storm dust (concentrated)
	343	DO ig=1,ngrid
	344	IF (storm(ig)) THEN
	345	DO l=1,nlayer
	346	mr_dust_mass(ig,l) = zq_dust_mass(ig,l)
	347	mr_dust_number(ig,l) = zq_dust_number(ig,l)
	348	mr_stormdust_mass(ig,l) = zq_dust_mass(ig,l)+ &
	349	zq_stormdust_mass(ig,l)/totstormfract(ig)
	350	mr_stormdust_number(ig,l) = zq_dust_number(ig,l)+ &
	351	zq_stormdust_number(ig,l)/totstormfract(ig)
	352	ENDDO ! DO l=1,nlayer
	353	ENDIF ! IF (storm(ig))
	354	ENDDO ! DO ig=1,ngrid
[1974]	355
[2079]	356	DO ig=1,ngrid
	357	IF (storm(ig)) THEN
[2201]	358	!! **********************************************************************
	359	!! 3.2 Compute the subtimestep to conserve the mass in the Van Leer transport
	360	dtmax=ptimestep
	361	DO l=2,nlayer
	362	IF (wrad(ig,l).lt.0.) THEN
	363	dtmax=min(dtmax,(pzlev(ig,l)-pzlev(ig,l-1))/ &
	364	(secu*abs(wrad(ig,l))))
	365	ELSE IF (wrad(ig,l).gt.0.) then
	366	dtmax=min(dtmax,(pzlev(ig,l+1)-pzlev(ig,l))/ &
	367	(secu*abs(wrad(ig,l))))
	368	ENDIF
	369	ENDDO
	370	nsubtimestep= int(ptimestep/dtmax)
	371	subtimestep=ptimestep/float(nsubtimestep)
	372	!! Mass flux generated by wup in kg/m2
	373	DO l=1,nlayer
	374	w(ig,l)=wrad(ig,l)pplev(ig,l)/(rztlev(ig,l)) &
	375	*subtimestep
	376	ENDDO ! l=1,nlayer
	377
	378	!! **********************************************************************
	379	!! 3.3 Vertical transport by a Van Leer scheme
[2079]	380	!! Mass of atmosphere in the layer
	381	DO l=1,nlayer
[2090]	382	masse_col(l)=(pplev(ig,l)-pplev(ig,l+1))/g
[2079]	383	ENDDO
[2201]	384	!! Mass flux in kg/m2 if you are not using the subtimestep
	385	!DO l=1,nlayer
	386	! w(ig,l)=wrad(ig,l)(pplev(ig,l)/(rztlev(ig,l)))*ptimestep
	387	!ENDDO
	388	!! Loop over the subtimestep
	389	DO tsub=1,nsubtimestep
	390	!! Van Leer scheme
	391	wqmass(ig,:)=0.
	392	wqnumber(ig,:)=0.
	393	CALL van_leer(nlayer,mr_stormdust_mass(ig,:),2., &
	394	masse_col,w(ig,:),wqmass(ig,:))
	395	CALL van_leer(nlayer,mr_stormdust_number(ig,:),2., &
	396	masse_col,w(ig,:),wqnumber(ig,:))
	397	ENDDO !tsub=...
	398
[2079]	399	ENDIF ! IF storm(ig)
	400	ENDDO ! DO ig=1,ngrid
[1974]	401
[2079]	402	!! **********************************************************************
[2201]	403	!! 3.4 Re-calculation of the mixing ratios after vertical transport
[2079]	404	DO ig=1,ngrid
	405	IF (storm(ig)) THEN
	406	DO l=1,nlayer
	407
	408	!! General and "healthy" case
	409	IF (mr_stormdust_mass(ig,l).ge.mr_dust_mass(ig,l)) THEN
	410	zq_dust_mass(ig,l) = mr_dust_mass(ig,l)
	411	zq_dust_number(ig,l) = mr_dust_number(ig,l)
	412	zq_stormdust_mass(ig,l) = totstormfract(ig)*(mr_stormdust_mass(ig,l)-mr_dust_mass(ig,l))
	413	zq_stormdust_number(ig,l) = totstormfract(ig)*(mr_stormdust_number(ig,l)-mr_dust_number(ig,l))
	414	!! Particular case: there is less than initial dust mixing ratio after the vertical transport
	415	ELSE
	416	zq_dust_mass(ig,l) = (1.-totstormfract(ig))mr_dust_mass(ig,l)+totstormfract(ig)mr_stormdust_mass(ig,l)
	417	zq_dust_number(ig,l) = (1.-totstormfract(ig))mr_dust_number(ig,l)+totstormfract(ig)mr_stormdust_number(ig,l)
	418	zq_stormdust_mass(ig,l) = 0.
	419	zq_stormdust_number(ig,l) = 0.
	420	ENDIF
	421
	422	ENDDO ! DO l=1,nlayer
	423	ENDIF ! IF storm(ig)
	424	ENDDO ! DO ig=1,ngrid
[1974]	425
[2079]	426	!! **********************************************************************
[2201]	427	!! 3.5 Calculation of the tendencies of the vertical transport
[2079]	428	DO ig=1,ngrid
	429	IF (storm(ig)) THEN
	430	DO l=1,nlayer
	431	dqvl_stormdust_mass(ig,l) = (zq_stormdust_mass(ig,l)- &
	432	zq(ig,l,igcm_stormdust_mass)) /ptimestep
	433	dqvl_stormdust_number(ig,l) = (zq_stormdust_number(ig,l)- &
	434	zq(ig,l,igcm_stormdust_number)) /ptimestep
	435	dqvl_dust_mass(ig,l) = (zq_dust_mass(ig,l)-zq(ig,l,igcm_dust_mass)) /ptimestep
	436	dqvl_dust_number(ig,l) = (zq_dust_number(ig,l)-zq(ig,l,igcm_dust_number)) /ptimestep
	437	ENDDO
	438	ENDIF ! IF storm(ig)
	439	ENDDO ! DO ig=1,ngrid
[1974]	440
	441	! **********************************************************************
[2079]	442	! 4. Detrainment: stormdust is converted to background dust
[1974]	443	! **********************************************************************
[2079]	444	!! **********************************************************************
	445	!! 4.1 Compute the coefficient of detrainmen
	446	DO ig=1,ngrid
	447	DO l=1,nlayer
	448	IF ((max(abs(wrad(ig,l)),abs(wrad(ig,l+1))) .lt. &
	449	wmin) .or. (zq_dust_mass(ig,l) .gt. &
	450	10000.*zq_stormdust_mass(ig,l))) THEN
[2160]	451	detrain(ig,l)=1.
[2079]	452	ELSE IF (max(abs(wrad(ig,l)),abs(wrad(ig,l+1))) &
	453	.le. wmax) THEN
[2160]	454	detrain(ig,l)=coeff_detrainment* &
	455	(((1-coefmin)/(wmin-wmax)*2) &
	456	(max(abs(wrad(ig,l)),abs(wrad(ig,l+1)))-wmax)**2 &
	457	+coefmin)
[2079]	458	ELSE IF (max(abs(wrad(ig,l)),abs(wrad(ig,l+1))).gt. wmax ) THEN
[2160]	459	detrain(ig,l)=coefmin
[2079]	460	ELSE
[2160]	461	detrain(ig,l)=coefmin
[2079]	462	ENDIF
	463	ENDDO ! DO l=1,nlayer
	464	ENDDO ! DO ig=1,ngrid
	465
	466	!! **********************************************************************
	467	!! 4.2 Calculation of the tendencies of the detrainment
	468	DO ig=1,ngrid
	469	DO l=1,nlayer
[2160]	470	dqdet_stormdust_mass(ig,l)=-detrain(ig,l)*zq_stormdust_mass(ig,l) &
[1974]	471	/ptimestep
[2160]	472	dqdet_stormdust_number(ig,l)=-detrain(ig,l)*zq_stormdust_number(ig,l) &
[1974]	473	/ptimestep
[2079]	474	ENDDO ! DO l=1,nlayer
	475	ENDDO ! DO ig=1,ngrid
	476
	477	! **********************************************************************
	478	! 5. Final tendencies: vertical transport + detrainment
	479	! **********************************************************************
	480	DO ig=1,ngrid
	481	DO l=1,nlayer
	482	pdqrds(ig,l,igcm_stormdust_mass)=dqdet_stormdust_mass(ig,l) &
	483	+dqvl_stormdust_mass(ig,l)
	484	pdqrds(ig,l,igcm_stormdust_number)=dqdet_stormdust_number(ig,l) &
	485	+dqvl_stormdust_number(ig,l)
	486	pdqrds(ig,l,igcm_dust_mass)= -dqdet_stormdust_mass(ig,l) &
	487	+dqvl_dust_mass(ig,l)
	488	pdqrds(ig,l,igcm_dust_number)= -dqdet_stormdust_number(ig,l) &
	489	+dqvl_dust_number(ig,l)
	490	ENDDO ! DO l=1,nlayer
	491	ENDDO ! DO ig=1,ngrid
[1974]	492
[2201]	493	! ! **********************************************************************
	494	! ! 6. To prevent from negative values
	495	! ! **********************************************************************
	496	! DO ig=1,ngrid
	497	! DO l=1,nlayer
	498	! IF ((pq(ig,l,igcm_stormdust_mass) &
	499	! +pdqrds(ig,l,igcm_stormdust_mass)*ptimestep .le. 0.) .or. &
	500	! (pq(ig,l,igcm_stormdust_number) &
	501	! +pdqrds(ig,l,igcm_stormdust_number)*ptimestep .le. 0.)) THEN
	502	! pdqrds(ig,l,igcm_stormdust_mass)=-pq(ig,l,igcm_stormdust_mass)/ptimestep
	503	! pdqrds(ig,l,igcm_stormdust_number)=-pq(ig,l,igcm_stormdust_number)/ptimestep
	504	! ENDIF
	505	! ENDDO ! nlayer
	506	! ENDDO ! DO ig=1,ngrid
	507	!
	508	! DO ig=1,ngrid
	509	! DO l=1,nlayer
	510	! IF ((pq(ig,l,igcm_dust_mass) &
	511	! +pdqrds(ig,l,igcm_dust_mass)*ptimestep .le. 0.) .or. &
	512	! (pq(ig,l,igcm_dust_number) &
	513	! +pdqrds(ig,l,igcm_dust_number)*ptimestep .le. 0.)) THEN
	514	! pdqrds(ig,l,igcm_dust_mass)=-pq(ig,l,igcm_dust_mass)/ptimestep
	515	! pdqrds(ig,l,igcm_dust_number)=-pq(ig,l,igcm_dust_number)/ptimestep
	516	! ENDIF
	517	! ENDDO ! nlayer
	518	! ENDDO ! DO ig=1,ngrid
[2079]	519
	520	!=======================================================================
	521	! WRITEDIAGFI
	522
[1974]	523	call WRITEDIAGFI(ngrid,'lapserate','lapse rate in the storm', &
	524	& 'k/m',3,lapserate)
	525	call WRITEDIAGFI(ngrid,'deltahr','extra heating rates', &
	526	& 'K/s',3,deltahr)
	527	call writediagfi(ngrid,'scheme','which scheme',&
	528	' ',2,real(scheme))
[2079]	529
[1974]	530	END SUBROUTINE rocketduststorm
	531
[2201]	532	!=======================================================================
	533	! **********************************************************************
	534	! Subroutine to determine the vertical transport with
	535	! a Van Leer advection scheme (copied from the sedimentation scheme --> see vlz_fi.F)
	536	!***********************************************************************
	537	SUBROUTINE van_leer(nlay,q,pente_max,masse,w,wq)
[2079]	538
[1974]	539	IMPLICIT NONE
	540
[2201]	541	!--------------------------------------------------------
	542	! Input/Output Variables
	543	!--------------------------------------------------------
	544	INTEGER,INTENT(IN) :: nlay ! number of atmospheric layers
	545	REAL,INTENT(IN) :: masse(nlay) ! mass of the layer Dp/g
	546	REAL,INTENT(IN) :: pente_max != 2 conseillee
	547	REAL,INTENT(INOUT) :: q(nlay) ! mixing ratio (kg/kg)
	548	REAL,INTENT(INOUT) :: w(nlay) ! atmospheric mass "transferred" at each timestep (kg.m-2)
	549	REAL,INTENT(INOUT) :: wq(nlay+1)
	550
	551	!--------------------------------------------------------
	552	! Local Variables
	553	!--------------------------------------------------------
	554
[1974]	555	INTEGER i,l,j,ii
[2079]	556	REAL dzq(nlay),dzqw(nlay),adzqw(nlay),dzqmax
	557	REAL newmasse
	558	REAL sigw, Mtot, MQtot
	559	INTEGER m
[1974]	560
[2201]	561	! **********************************************************************
	562	! Mixing ratio vertical gradient at the levels
	563	! **********************************************************************
[1974]	564	do l=2,nlay
	565	dzqw(l)=q(l-1)-q(l)
	566	adzqw(l)=abs(dzqw(l))
	567	enddo
	568
	569	do l=2,nlay-1
	570	if(dzqw(l)*dzqw(l+1).gt.0.) then
	571	dzq(l)=0.5*(dzqw(l)+dzqw(l+1))
	572	else
	573	dzq(l)=0.
	574	endif
	575	dzqmax=pente_max*min(adzqw(l),adzqw(l+1))
	576	dzq(l)=sign(min(abs(dzq(l)),dzqmax),dzq(l))
	577	enddo
	578
	579	dzq(1)=0.
	580	dzq(nlay)=0.
[2079]	581
[2201]	582	! **********************************************************************
	583	! Vertical advection
	584	! **********************************************************************
[1974]	585
[2201]	586	!! No flux at the model top:
[1974]	587	wq(nlay+1)=0.
	588
[2201]	589	!! Surface flux up:
[2119]	590	if(w(1).lt.0.) wq(1)=0. ! warning : not always valid
[1974]	591
[2201]	592	do l = 1,nlay-1
[2119]	593
[2201]	594	! 1) Compute wq where w < 0 (up) (UPWARD TRANSPORT)
[2119]	595	! ===============================
	596
[1974]	597	if(w(l+1).le.0)then
	598	! Regular scheme (transfered mass < 1 layer)
	599	! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
	600	if(-w(l+1).le.masse(l))then
	601	sigw=w(l+1)/masse(l)
	602	wq(l+1)=w(l+1)(q(l)-0.5(1.+sigw)*dzq(l))
[2201]	603	!!-------------------------------------------------------
	604	! The following part should not be needed in the
	605	! case of an integration over subtimesteps
	606	!!-------------------------------------------------------
[1974]	607	! Extended scheme (transfered mass > 1 layer)
	608	! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
	609	else
	610	m = l-1
	611	Mtot = masse(m+1)
	612	MQtot = masse(m+1)*q(m+1)
	613	if (m.le.0)goto 77
	614	do while(-w(l+1).gt.(Mtot+masse(m)))
	615	! do while(-w(l+1).gt.Mtot)
	616	m=m-1
	617	Mtot = Mtot + masse(m+1)
	618	MQtot = MQtot + masse(m+1)*q(m+1)
	619	if (m.le.0)goto 77
	620	end do
	621	77 continue
	622
	623	if (m.gt.0) then
	624	sigw=(w(l+1)+Mtot)/masse(m)
[2079]	625	wq(l+1)= -(MQtot + (-w(l+1)-Mtot)* &
[1974]	626	(q(m)-0.5(1.+sigw)dzq(m)) )
	627	else
	628	w(l+1) = -Mtot
	629	wq(l+1) = -MQtot
	630	end if
[2119]	631	endif ! (-w(l+1).le.masse(l))
[1974]	632
[2201]	633	! 2) Compute wq where w > 0 (down) (DOWNWARD TRANSPORT)
[1974]	634	! ===============================
	635
[2119]	636	else if(w(l).gt.0.)then
[1974]	637
	638	! Regular scheme (transfered mass < 1 layer)
	639	! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
	640	if(w(l).le.masse(l))then
	641	sigw=w(l)/masse(l)
[2201]	642	wq(l)=w(l)(q(l)+0.5(1.-sigw)*dzq(l))
	643	!!-------------------------------------------------------
	644	! The following part should not be needed in the
	645	! case of an integration over subtimesteps
	646	!!-------------------------------------------------------
[1974]	647	! Extended scheme (transfered mass > 1 layer)
	648	! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
	649	else
	650	m=l
	651	Mtot = masse(m)
	652	MQtot = masse(m)*q(m)
	653	if(m.ge.nlay)goto 88
	654	do while(w(l).gt.(Mtot+masse(m+1)))
	655	m=m+1
	656	Mtot = Mtot + masse(m)
	657	MQtot = MQtot + masse(m)*q(m)
	658	if(m.ge.nlay)goto 88
	659	end do
	660	88 continue
	661	if (m.lt.nlay) then
	662	sigw=(w(l)-Mtot)/masse(m+1)
	663	wq(l)=(MQtot + (w(l)-Mtot)* &
	664	(q(m+1)+0.5(1.-sigw)dzq(m+1)) )
	665	else
	666	w(l) = Mtot
	667	wq(l) = MQtot
	668	end if
[2119]	669	end if
[2100]	670
[2119]	671	end if ! w<0 (up)
[2100]	672
[2119]	673	enddo ! l = 1,nlay-1
[1974]	674
[2201]	675	do l = 1,nlay
[1974]	676
[2119]	677	! it cannot entrain more than available mass !
	678	if ( (wq(l+1)-wq(l)) .lt. -(masse(l)*q(l)) ) then
	679	wq(l+1) = wq(l)-masse(l)*q(l)
	680	end if
	681
[1974]	682	q(l)=q(l) + (wq(l+1)-wq(l))/masse(l)
	683
	684	enddo
[2079]	685
[2201]	686	END SUBROUTINE van_leer
[1974]	687
[2079]	688	!=======================================================================
	689	! Initialization of the module variables
[1974]	690
	691	subroutine ini_rocketduststorm_mod(ngrid)
	692
	693	implicit none
	694
	695	integer, intent(in) :: ngrid
	696
	697	allocate(dustliftday(ngrid))
	698
	699	end subroutine ini_rocketduststorm_mod
	700
	701	subroutine end_rocketduststorm_mod
	702
	703	implicit none
	704
	705	if (allocated(dustliftday)) deallocate(dustliftday)
	706
	707	end subroutine end_rocketduststorm_mod
	708
	709	END MODULE rocketduststorm_mod

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