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rocketduststorm_mod.F90 @ 2789

Last change on this file since 2789 was 2685, checked in by emillour, 3 years ago
Mars GCM: Add possibility to output either upward or downward SW flux at the surface and top of atmosphere from physiq. Required adding some output arguments to callradite. EM
File size: 31.4 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, &
[2643]	29	IRtoVIScoef, &
[1974]	30	! input sub-grid scale cloud
	31	clearsky,totcloudfrac, &
[2199]	32	! input sub-grid scale topography
[2628]	33	nohmons, &
[2079]	34	! output
[2246]	35	pdqrds,wrad,dsodust,dsords,dsotop, &
[2415]	36	tau_pref_scenario,tau_pref_gcm)
[1974]	37
[2079]	38	USE tracer_mod, only: igcm_stormdust_mass,igcm_stormdust_number &
[1974]	39	,igcm_dust_mass,igcm_dust_number &
	40	,rho_dust
	41	USE comcstfi_h, only: r,g,cpp,rcp
[2079]	42	USE dimradmars_mod, only: albedo,naerkind
	43	USE comsaison_h, only: dist_sol,mu0,fract
	44	USE surfdat_h, only: emis,co2ice,zmea, zstd, zsig, hmons
[2226]	45	USE callradite_mod, only: callradite
[2079]	46	IMPLICIT NONE
[1974]	47
[2160]	48	include "callkeys.h"
	49
[1974]	50	!--------------------------------------------------------
	51	! Input Variables
	52	!--------------------------------------------------------
	53
	54	INTEGER, INTENT(IN) :: ngrid ! number of horizontal grid points
	55	INTEGER, INTENT(IN) :: nlayer ! number of vertical grid points
	56	INTEGER, INTENT(IN) :: nq ! number of tracer species
	57	REAL, INTENT(IN) :: ptime
	58	REAL, INTENT(IN) :: ptimestep
	59
	60	REAL, INTENT(IN) :: pq(ngrid,nlayer,nq) ! advected field nq
	61	REAL, INTENT(IN) :: pdqfi(ngrid,nlayer,nq)! tendancy field pq
	62	REAL, INTENT(IN) :: pt(ngrid,nlayer) ! temperature at mid-layer (K)
	63	REAL, INTENT(IN) :: pdtfi(ngrid,nlayer) ! tendancy temperature at mid-layer (K)
	64
	65	REAL, INTENT(IN) :: pplay(ngrid,nlayer) ! pressure at middle of the layers
	66	REAL, INTENT(IN) :: pplev(ngrid,nlayer+1) ! pressure at intermediate levels
	67	REAL, INTENT(IN) :: pzlay(ngrid,nlayer) ! altitude at the middle of the layers
	68	REAL, INTENT(IN) :: pzlev(ngrid,nlayer+1) ! altitude at layer boundaries
	69
	70	REAL, INTENT(IN) :: pdtsw(ngrid,nlayer) ! (K/s) env
	71	REAL, INTENT(IN) :: pdtlw(ngrid,nlayer) ! (K/s) env
	72
	73	! input for second radiative transfer
[2079]	74	LOGICAL, INTENT(IN) :: clearatm
[1974]	75	INTEGER, INTENT(INOUT) :: icount
[2079]	76	REAL, INTENT(IN) :: zday
	77	REAL, INTENT(IN) :: zls
	78	REAL, INTENT(IN) :: tsurf(ngrid)
	79	INTEGER, INTENT(IN) :: igout
	80	REAL, INTENT(IN) :: totstormfract(ngrid)
[2226]	81	REAL, INTENT(INOUT) :: tauscaling(ngrid)
[2643]	82	REAL,INTENT(INOUT) :: dust_rad_adjust(ngrid)
	83	REAL,INTENT(INOUT) :: IRtoVIScoef(ngrid) ! NB: not modified by this call to callradite,
	84	! the OUT is just here because callradite needs it
[2079]	85
[2628]	86	! subgrid scale water ice clouds
[1974]	87	logical, intent(in) :: clearsky
[2199]	88	real, intent(in) :: totcloudfrac(ngrid)
	89
[2628]	90	! subgrid scale topography
[2199]	91	LOGICAL, INTENT(IN) :: nohmons
[1974]	92
	93	!--------------------------------------------------------
	94	! Output Variables
	95	!--------------------------------------------------------
	96
	97	REAL, INTENT(OUT) :: pdqrds(ngrid,nlayer,nq) ! tendancy field for dust when detraining
[2079]	98	REAL, INTENT(OUT) :: wrad(ngrid,nlayer+1) ! vertical speed within the rocket dust storm
[2415]	99	REAL, INTENT(OUT) :: dsodust(ngrid,nlayer) ! density scaled opacity of env. dust
	100	REAL, INTENT(OUT) :: dsords(ngrid,nlayer) ! density scaled opacity of storm dust
	101	REAL, INTENT(OUT) :: dsotop(ngrid,nlayer) ! density scaled opacity of topmons dust
	102	REAL,INTENT(OUT) :: tau_pref_scenario(ngrid) ! prescribed dust column
	103	! visible opacity at odpref
	104	REAL,INTENT(OUT) :: tau_pref_gcm(ngrid) ! dust column visible opacity at
	105	! odpref in the GCM
[1974]	106	!--------------------------------------------------------
	107	! Local variables
	108	!--------------------------------------------------------
[2201]	109	INTEGER l,ig,iq,ll
[2079]	110	! local variables from callradite.F
[1974]	111	REAL zdtlw1(ngrid,nlayer) ! (K/s) storm
	112	REAL zdtsw1(ngrid,nlayer) ! (K/s) storm
	113	REAL zt(ngrid,nlayer) ! actual temperature at mid-layer (K)
[2091]	114	REAL zdtvert(ngrid,nlayer) ! dT/dz , lapse rate
	115	REAL ztlev(ngrid,nlayer) ! temperature at intermediate levels l+1/2 without last level
[1974]	116
[2079]	117	REAL zdtlw1_lev(nlayer),zdtsw1_lev(nlayer) ! rad. heating rate at intermediate levels l+1/2 for stormdust
	118	REAL zdtlw_lev(nlayer),zdtsw_lev(nlayer) ! rad. heating rate at intermediate levels l+1/2 for background dust
[1974]	119
[2079]	120	REAL zq_stormdust_mass(ngrid,nlayer) ! intermediate tracer stormdust mass
	121	REAL zq_stormdust_number(ngrid,nlayer) ! intermediate tracer stormdust number
	122	REAL zq_dust_mass(ngrid,nlayer) ! intermediate tracer dust mass
	123	REAL zq_dust_number(ngrid,nlayer) ! intermediate tracer dust number
[1974]	124
[2079]	125	REAL mr_stormdust_mass(ngrid,nlayer) ! intermediate mixing ratio to calculate van leer transport with the "real" concentration (stormdust mass)
	126	REAL mr_stormdust_number(ngrid,nlayer) ! intermediate mixing ratio to calculate van leer transport with the "real" concentration (stormdust number)
	127	REAL mr_dust_mass(ngrid,nlayer) ! intermediate mixing ratio to calculate van leer transport with the "real" concentration (dust mass)
	128	REAL mr_dust_number(ngrid,nlayer) ! intermediate mixing ratio to calculate van leer transport with the "real" concentration (sdust number)
	129
	130	REAL dqvl_stormdust_mass(ngrid,nlayer) ! tendancy of vertical transport (stormdust mass)
	131	REAL dqvl_stormdust_number(ngrid,nlayer) ! tendancy of vertical transport (stormdust number)
	132	REAL dqvl_dust_mass(ngrid,nlayer) ! tendancy of vertical transport (dust mass)
	133	REAL dqvl_dust_number(ngrid,nlayer) ! tendancy of vertical transport (dust number)
	134	REAL dqdet_stormdust_mass(ngrid,nlayer) ! tendancy of detrainement (stormdust mass)
	135	REAL dqdet_stormdust_number(ngrid,nlayer) ! tendancy of detrainement (stormdust number)
[1974]	136
[2090]	137	REAL masse_col(nlayer) ! mass of atmosphere (kg/m2)
[1974]	138	REAL zq(ngrid,nlayer,nq) ! updated tracers
	139
[2090]	140	REAL w(ngrid,nlayer) ! air mass flux (calculated with the vertical wind velocity profile) used as input in Van Leer (kgair/m2)
	141	REAL wqmass(ngrid,nlayer+1) ! tracer (dust_mass) mass flux in Van Leer (kg/m2)
	142	REAL wqnumber(ngrid,nlayer+1) ! tracer (dust_number) mass flux in Van Leer (kg/m2)
[1974]	143
[2079]	144	LOGICAL storm(ngrid) ! true when there is a dust storm (if the opacity is high): trigger the rocket dust storm scheme
[2160]	145	REAL detrain(ngrid,nlayer) ! coefficient for detrainment : % of stormdust detrained
[2079]	146	INTEGER scheme(ngrid) ! triggered scheme
	147
	148	REAL,PARAMETER:: coefmin =0.025 ! 0<coefmin<1 Minimum fraction of stormdust detrained
[2201]	149	REAL,PARAMETER:: wmin =0.25 ! stormdust detrainment if wrad < wmin
[2079]	150	REAL,PARAMETER:: wmax =10. ! maximum vertical velocity of the rocket dust storms (m/s)
[2201]	151
	152	! subtimestep
	153	INTEGER tsub
	154	INTEGER nsubtimestep !number of subtimestep when calling van_leer
	155	REAL subtimestep !ptimestep/nsubtimestep
	156	REAL dtmax !considered time needed for dust to cross one layer
	157	REAL,PARAMETER:: secu=3.!3. !coefficient on wspeed to avoid dust crossing many layers during subtimestep
	158
[2079]	159	! diagnostics
	160	REAL lapserate(ngrid,nlayer)
	161	REAL deltahr(ngrid,nlayer+1)
[1974]	162
[2079]	163	LOGICAL,SAVE :: firstcall=.true.
[2616]	164
	165	!$OMP THREADPRIVATE(firstcall)
[2079]	166
	167	! variables for the radiative transfer
[1974]	168	REAL fluxsurf_lw1(ngrid)
[2685]	169	REAL fluxsurf_dn_sw1(ngrid,2),fluxsurf_up_sw1(ngrid,2)
[1974]	170	REAL fluxtop_lw1(ngrid)
[2685]	171	REAL fluxtop_dn_sw1(ngrid,2),fluxtop_up_sw1(ngrid,2)
[1974]	172	REAL tau(ngrid,naerkind)
	173	REAL aerosol(ngrid,nlayer,naerkind)
	174	REAL taucloudtes(ngrid)
	175	REAL rdust(ngrid,nlayer)
	176	REAL rstormdust(ngrid,nlayer)
[2199]	177	REAL rtopdust(ngrid,nlayer)
[1974]	178	REAL rice(ngrid,nlayer)
	179	REAL nuice(ngrid,nlayer)
[2459]	180	DOUBLE PRECISION riceco2(ngrid,nlayer)
[2448]	181	REAL nuiceco2(ngrid,nlayer)
[1974]	182
	183	! **********************************************************************
	184	! **********************************************************************
[2079]	185	! Rocket dust storm parametrization to reproduce the detached dust layers
	186	! during the dust storm season:
[1974]	187	! The radiative warming due to the presence of storm dust is
	188	! balanced by the adiabatic cooling. The tracer "storm dust"
	189	! is transported by the upward/downward flow.
	190	! **********************************************************************
	191	! **********************************************************************
	192	!! 1. Radiative transfer in storm dust
	193	!! 2. Compute vertical velocity for storm dust
[2079]	194	!! case 1 storm = false: nothing to do
	195	!! case 2 rocket dust storm (storm=true)
	196	!! 3. Vertical transport (Van Leer)
[1974]	197	!! 4. Detrainment
	198	! **********************************************************************
	199	! **********************************************************************
	200
	201
	202	! **********************************************************************
[2079]	203	! Initializations
[1974]	204	! **********************************************************************
	205	storm(:)=.false.
	206	pdqrds(:,:,:) = 0.
[2079]	207	mr_dust_mass(:,:)=0.
	208	mr_dust_number(:,:)=0.
	209	mr_stormdust_mass(:,:)=0.
	210	mr_stormdust_number(:,:)=0.
	211	dqvl_dust_mass(:,:)=0.
	212	dqvl_dust_number(:,:)=0.
	213	dqvl_stormdust_mass(:,:)=0.
	214	dqvl_stormdust_number(:,:)=0.
	215	dqdet_stormdust_mass(:,:)=0.
	216	dqdet_stormdust_number(:,:)=0.
	217	wrad(:,:)=0.
[2090]	218	w(:,:)=0.
	219	wqmass(:,:)=0.
	220	wqnumber(:,:)=0.
[2091]	221	zdtvert(:,:)=0.
[1974]	222	lapserate(:,:)=0.
	223	deltahr(:,:)=0.
	224	scheme(:)=0
[2160]	225	detrain(:,:)=1.
[2083]	226
[1974]	227	!! no update for the stormdust tracer and temperature fields
	228	!! because previous callradite was for background dust
	229	zq(1:ngrid,1:nlayer,1:nq)=pq(1:ngrid,1:nlayer,1:nq)
	230	zt(1:ngrid,1:nlayer)=pt(1:ngrid,1:nlayer)
	231
	232
[2079]	233	zq_dust_mass(1:ngrid,1:nlayer)=zq(1:ngrid,1:nlayer,igcm_dust_mass)
	234	zq_dust_number(1:ngrid,1:nlayer)=zq(1:ngrid,1:nlayer,igcm_dust_number)
	235	zq_stormdust_mass(1:ngrid,1:nlayer)=zq(1:ngrid,1:nlayer,igcm_stormdust_mass)
	236	zq_stormdust_number(1:ngrid,1:nlayer)=zq(1:ngrid,1:nlayer,igcm_stormdust_number)
	237
	238	! *********************************************************************
	239	! 0. Check if there is a storm
	240	! *********************************************************************
	241	DO ig=1,ngrid
[1974]	242	storm(ig)=.false.
[2079]	243	DO l=1,nlayer
	244	IF (zq(ig,l,igcm_stormdust_mass) &
	245	.gt. zq(ig,l,igcm_dust_mass)*(1.E-4)) THEN
[1974]	246	storm(ig)=.true.
[2079]	247	EXIT
	248	ENDIF
	249	ENDDO
	250	ENDDO
[1974]	251
	252	! *********************************************************************
	253	! 1. Call the second radiative transfer for stormdust, obtain the extra heating
	254	! *********************************************************************
[2199]	255	CALL callradite(icount,ngrid,nlayer,nq,zday,zls,pq,albedo, &
	256	emis,mu0,pplev,pplay,pt,tsurf,fract,dist_sol,igout, &
[2685]	257	zdtlw1,zdtsw1,fluxsurf_lw1,fluxsurf_dn_sw1,fluxsurf_up_sw1, &
	258	fluxtop_lw1,fluxtop_dn_sw1,fluxtop_up_sw1, &
	259	tau_pref_scenario,tau_pref_gcm, &
[2643]	260	tau,aerosol,dsodust,tauscaling,dust_rad_adjust,IRtoVIScoef, &
[2448]	261	taucloudtes,rdust,rice,nuice,riceco2,nuiceco2,co2ice,rstormdust,rtopdust, &
[2628]	262	totstormfract,clearatm,dsords,dsotop,nohmons,&
[1974]	263	clearsky,totcloudfrac)
	264
	265	! **********************************************************************
	266	! 2. Compute vertical velocity for storm dust
[2079]	267	! **********************************************************************
[1974]	268	!! **********************************************************************
[2079]	269	!! 2.1 Nothing to do when no storm
	270	!! no storm
	271	DO ig=1,ngrid
	272	IF (.NOT.(storm(ig))) then
	273	scheme(ig)=1
	274	cycle
	275	ENDIF ! IF (storm(ig))
	276	ENDDO ! DO ig=1,ngrid
[1974]	277
[2079]	278	!! **********************************************************************
	279	!! 2.2 Calculation of the extra heating : computing heating rates
	280	!! gradient at boundaries of each layer, start from surface
	281	DO ig=1,ngrid
[2091]	282	IF (storm(ig)) THEN
	283
	284	scheme(ig)=2
[1974]	285
[2091]	286	!! computing heating rates gradient at boundraies of each layer
	287	!! start from surface
	288	zdtlw1_lev(1)=0.
	289	zdtsw1_lev(1)=0.
	290	zdtlw_lev(1)=0.
	291	zdtsw_lev(1)=0.
	292	ztlev(ig,1)=zt(ig,1)
[1974]	293
[2091]	294	DO l=1,nlayer-1
	295	!! Calculation for the dust storm fraction
	296	zdtlw1_lev(l+1)=(zdtlw1(ig,l)*(pzlay(ig,l+1)-pzlev(ig,l+1))+ &
	297	zdtlw1(ig,l+1)*(pzlev(ig,l+1)-pzlay(ig,l))) / &
	298	(pzlay(ig,l+1)-pzlay(ig,l))
	299
	300	zdtsw1_lev(l+1)=(zdtsw1(ig,l)*(pzlay(ig,l+1)-pzlev(ig,l+1))+ &
	301	zdtsw1(ig,l+1)*(pzlev(ig,l+1)-pzlay(ig,l))) / &
	302	(pzlay(ig,l+1)-pzlay(ig,l))
	303	!! Calculation for the background dust fraction
	304	zdtlw_lev(l+1)=(pdtlw(ig,l)*(pzlay(ig,l+1)-pzlev(ig,l+1))+ &
	305	pdtlw(ig,l+1)*(pzlev(ig,l+1)-pzlay(ig,l))) / &
	306	(pzlay(ig,l+1)-pzlay(ig,l))
[2079]	307
[2091]	308	zdtsw_lev(l+1)=(pdtsw(ig,l)*(pzlay(ig,l+1)-pzlev(ig,l+1))+ &
	309	pdtsw(ig,l+1)*(pzlev(ig,l+1)-pzlay(ig,l))) / &
	310	(pzlay(ig,l+1)-pzlay(ig,l))
[2079]	311
[2091]	312	ztlev(ig,l+1)=(zt(ig,l)*(pzlay(ig,l+1)-pzlev(ig,l+1))+ &
	313	zt(ig,l+1)*(pzlev(ig,l+1)-pzlay(ig,l))) / &
	314	(pzlay(ig,l+1)-pzlay(ig,l))
[2201]	315	ENDDO ! DO l=1,nlayer-1
[1974]	316
[2201]	317	!! This is the env. lapse rate
	318	zdtvert(ig,1)=0.
	319	DO l=1,nlayer-1
	320	zdtvert(ig,l+1)=(ztlev(ig,l+1)-ztlev(ig,l))/(pzlay(ig,l+1)-pzlay(ig,l))
	321	lapserate(ig,l+1)=zdtvert(ig,l+1)
	322	ENDDO
	323
[2091]	324	!! **********************************************************************
	325	!! 2.3 Calculation of the vertical velocity : extra heating
	326	!! balanced by adiabatic cooling
	327
[2079]	328	DO l=1,nlayer
	329	deltahr(ig,l)=(zdtlw1_lev(l)+zdtsw1_lev(l)) &
	330	-(zdtlw_lev(l)+zdtsw_lev(l))
	331	wrad(ig,l)=-deltahr(ig,l)/(g/cpp+ &
[2091]	332	max(zdtvert(ig,l),-0.99*g/cpp))
[2079]	333	!! Limit vertical wind in case of lapse rate close to adiabatic
	334	wrad(ig,l)=max(wrad(ig,l),-wmax)
	335	wrad(ig,l)=min(wrad(ig,l),wmax)
	336	ENDDO
[2091]	337
[2079]	338	ENDIF ! IF (storm(ig))
	339	ENDDO ! DO ig=1,ngrid
[1974]	340
	341	! **********************************************************************
	342	! 3. Vertical transport
	343	! **********************************************************************
[2079]	344	!! **********************************************************************
	345	!! 3.1 Transport of background dust + storm dust (concentrated)
	346	DO ig=1,ngrid
	347	IF (storm(ig)) THEN
	348	DO l=1,nlayer
	349	mr_dust_mass(ig,l) = zq_dust_mass(ig,l)
	350	mr_dust_number(ig,l) = zq_dust_number(ig,l)
	351	mr_stormdust_mass(ig,l) = zq_dust_mass(ig,l)+ &
	352	zq_stormdust_mass(ig,l)/totstormfract(ig)
	353	mr_stormdust_number(ig,l) = zq_dust_number(ig,l)+ &
	354	zq_stormdust_number(ig,l)/totstormfract(ig)
	355	ENDDO ! DO l=1,nlayer
	356	ENDIF ! IF (storm(ig))
	357	ENDDO ! DO ig=1,ngrid
[1974]	358
[2079]	359	DO ig=1,ngrid
	360	IF (storm(ig)) THEN
[2201]	361	!! **********************************************************************
	362	!! 3.2 Compute the subtimestep to conserve the mass in the Van Leer transport
	363	dtmax=ptimestep
	364	DO l=2,nlayer
	365	IF (wrad(ig,l).lt.0.) THEN
	366	dtmax=min(dtmax,(pzlev(ig,l)-pzlev(ig,l-1))/ &
	367	(secu*abs(wrad(ig,l))))
	368	ELSE IF (wrad(ig,l).gt.0.) then
	369	dtmax=min(dtmax,(pzlev(ig,l+1)-pzlev(ig,l))/ &
	370	(secu*abs(wrad(ig,l))))
	371	ENDIF
	372	ENDDO
	373	nsubtimestep= int(ptimestep/dtmax)
	374	subtimestep=ptimestep/float(nsubtimestep)
	375	!! Mass flux generated by wup in kg/m2
	376	DO l=1,nlayer
	377	w(ig,l)=wrad(ig,l)pplev(ig,l)/(rztlev(ig,l)) &
	378	*subtimestep
	379	ENDDO ! l=1,nlayer
	380
	381	!! **********************************************************************
	382	!! 3.3 Vertical transport by a Van Leer scheme
[2079]	383	!! Mass of atmosphere in the layer
	384	DO l=1,nlayer
[2090]	385	masse_col(l)=(pplev(ig,l)-pplev(ig,l+1))/g
[2079]	386	ENDDO
[2201]	387	!! Mass flux in kg/m2 if you are not using the subtimestep
	388	!DO l=1,nlayer
	389	! w(ig,l)=wrad(ig,l)(pplev(ig,l)/(rztlev(ig,l)))*ptimestep
	390	!ENDDO
	391	!! Loop over the subtimestep
	392	DO tsub=1,nsubtimestep
	393	!! Van Leer scheme
	394	wqmass(ig,:)=0.
	395	wqnumber(ig,:)=0.
	396	CALL van_leer(nlayer,mr_stormdust_mass(ig,:),2., &
	397	masse_col,w(ig,:),wqmass(ig,:))
	398	CALL van_leer(nlayer,mr_stormdust_number(ig,:),2., &
	399	masse_col,w(ig,:),wqnumber(ig,:))
	400	ENDDO !tsub=...
	401
[2079]	402	ENDIF ! IF storm(ig)
	403	ENDDO ! DO ig=1,ngrid
[1974]	404
[2079]	405	!! **********************************************************************
[2201]	406	!! 3.4 Re-calculation of the mixing ratios after vertical transport
[2079]	407	DO ig=1,ngrid
	408	IF (storm(ig)) THEN
	409	DO l=1,nlayer
	410
	411	!! General and "healthy" case
	412	IF (mr_stormdust_mass(ig,l).ge.mr_dust_mass(ig,l)) THEN
	413	zq_dust_mass(ig,l) = mr_dust_mass(ig,l)
	414	zq_dust_number(ig,l) = mr_dust_number(ig,l)
	415	zq_stormdust_mass(ig,l) = totstormfract(ig)*(mr_stormdust_mass(ig,l)-mr_dust_mass(ig,l))
	416	zq_stormdust_number(ig,l) = totstormfract(ig)*(mr_stormdust_number(ig,l)-mr_dust_number(ig,l))
	417	!! Particular case: there is less than initial dust mixing ratio after the vertical transport
	418	ELSE
	419	zq_dust_mass(ig,l) = (1.-totstormfract(ig))mr_dust_mass(ig,l)+totstormfract(ig)mr_stormdust_mass(ig,l)
	420	zq_dust_number(ig,l) = (1.-totstormfract(ig))mr_dust_number(ig,l)+totstormfract(ig)mr_stormdust_number(ig,l)
	421	zq_stormdust_mass(ig,l) = 0.
	422	zq_stormdust_number(ig,l) = 0.
	423	ENDIF
	424
	425	ENDDO ! DO l=1,nlayer
	426	ENDIF ! IF storm(ig)
	427	ENDDO ! DO ig=1,ngrid
[1974]	428
[2079]	429	!! **********************************************************************
[2201]	430	!! 3.5 Calculation of the tendencies of the vertical transport
[2079]	431	DO ig=1,ngrid
	432	IF (storm(ig)) THEN
	433	DO l=1,nlayer
	434	dqvl_stormdust_mass(ig,l) = (zq_stormdust_mass(ig,l)- &
	435	zq(ig,l,igcm_stormdust_mass)) /ptimestep
	436	dqvl_stormdust_number(ig,l) = (zq_stormdust_number(ig,l)- &
	437	zq(ig,l,igcm_stormdust_number)) /ptimestep
	438	dqvl_dust_mass(ig,l) = (zq_dust_mass(ig,l)-zq(ig,l,igcm_dust_mass)) /ptimestep
	439	dqvl_dust_number(ig,l) = (zq_dust_number(ig,l)-zq(ig,l,igcm_dust_number)) /ptimestep
	440	ENDDO
	441	ENDIF ! IF storm(ig)
	442	ENDDO ! DO ig=1,ngrid
[1974]	443
	444	! **********************************************************************
[2079]	445	! 4. Detrainment: stormdust is converted to background dust
[1974]	446	! **********************************************************************
[2079]	447	!! **********************************************************************
	448	!! 4.1 Compute the coefficient of detrainmen
	449	DO ig=1,ngrid
	450	DO l=1,nlayer
	451	IF ((max(abs(wrad(ig,l)),abs(wrad(ig,l+1))) .lt. &
	452	wmin) .or. (zq_dust_mass(ig,l) .gt. &
	453	10000.*zq_stormdust_mass(ig,l))) THEN
[2160]	454	detrain(ig,l)=1.
[2079]	455	ELSE IF (max(abs(wrad(ig,l)),abs(wrad(ig,l+1))) &
	456	.le. wmax) THEN
[2160]	457	detrain(ig,l)=coeff_detrainment* &
	458	(((1-coefmin)/(wmin-wmax)*2) &
	459	(max(abs(wrad(ig,l)),abs(wrad(ig,l+1)))-wmax)**2 &
	460	+coefmin)
[2079]	461	ELSE IF (max(abs(wrad(ig,l)),abs(wrad(ig,l+1))).gt. wmax ) THEN
[2160]	462	detrain(ig,l)=coefmin
[2079]	463	ELSE
[2160]	464	detrain(ig,l)=coefmin
[2079]	465	ENDIF
	466	ENDDO ! DO l=1,nlayer
	467	ENDDO ! DO ig=1,ngrid
	468
	469	!! **********************************************************************
	470	!! 4.2 Calculation of the tendencies of the detrainment
	471	DO ig=1,ngrid
	472	DO l=1,nlayer
[2160]	473	dqdet_stormdust_mass(ig,l)=-detrain(ig,l)*zq_stormdust_mass(ig,l) &
[1974]	474	/ptimestep
[2160]	475	dqdet_stormdust_number(ig,l)=-detrain(ig,l)*zq_stormdust_number(ig,l) &
[1974]	476	/ptimestep
[2079]	477	ENDDO ! DO l=1,nlayer
	478	ENDDO ! DO ig=1,ngrid
	479
	480	! **********************************************************************
	481	! 5. Final tendencies: vertical transport + detrainment
	482	! **********************************************************************
	483	DO ig=1,ngrid
	484	DO l=1,nlayer
	485	pdqrds(ig,l,igcm_stormdust_mass)=dqdet_stormdust_mass(ig,l) &
	486	+dqvl_stormdust_mass(ig,l)
	487	pdqrds(ig,l,igcm_stormdust_number)=dqdet_stormdust_number(ig,l) &
	488	+dqvl_stormdust_number(ig,l)
	489	pdqrds(ig,l,igcm_dust_mass)= -dqdet_stormdust_mass(ig,l) &
	490	+dqvl_dust_mass(ig,l)
	491	pdqrds(ig,l,igcm_dust_number)= -dqdet_stormdust_number(ig,l) &
	492	+dqvl_dust_number(ig,l)
	493	ENDDO ! DO l=1,nlayer
	494	ENDDO ! DO ig=1,ngrid
[1974]	495
[2201]	496	! ! **********************************************************************
	497	! ! 6. To prevent from negative values
	498	! ! **********************************************************************
	499	! DO ig=1,ngrid
	500	! DO l=1,nlayer
	501	! IF ((pq(ig,l,igcm_stormdust_mass) &
	502	! +pdqrds(ig,l,igcm_stormdust_mass)*ptimestep .le. 0.) .or. &
	503	! (pq(ig,l,igcm_stormdust_number) &
	504	! +pdqrds(ig,l,igcm_stormdust_number)*ptimestep .le. 0.)) THEN
	505	! pdqrds(ig,l,igcm_stormdust_mass)=-pq(ig,l,igcm_stormdust_mass)/ptimestep
	506	! pdqrds(ig,l,igcm_stormdust_number)=-pq(ig,l,igcm_stormdust_number)/ptimestep
	507	! ENDIF
	508	! ENDDO ! nlayer
	509	! ENDDO ! DO ig=1,ngrid
	510	!
	511	! DO ig=1,ngrid
	512	! DO l=1,nlayer
	513	! IF ((pq(ig,l,igcm_dust_mass) &
	514	! +pdqrds(ig,l,igcm_dust_mass)*ptimestep .le. 0.) .or. &
	515	! (pq(ig,l,igcm_dust_number) &
	516	! +pdqrds(ig,l,igcm_dust_number)*ptimestep .le. 0.)) THEN
	517	! pdqrds(ig,l,igcm_dust_mass)=-pq(ig,l,igcm_dust_mass)/ptimestep
	518	! pdqrds(ig,l,igcm_dust_number)=-pq(ig,l,igcm_dust_number)/ptimestep
	519	! ENDIF
	520	! ENDDO ! nlayer
	521	! ENDDO ! DO ig=1,ngrid
[2079]	522
	523	!=======================================================================
	524	! WRITEDIAGFI
	525
[1974]	526	call WRITEDIAGFI(ngrid,'lapserate','lapse rate in the storm', &
	527	& 'k/m',3,lapserate)
	528	call WRITEDIAGFI(ngrid,'deltahr','extra heating rates', &
	529	& 'K/s',3,deltahr)
	530	call writediagfi(ngrid,'scheme','which scheme',&
	531	' ',2,real(scheme))
[2079]	532
[1974]	533	END SUBROUTINE rocketduststorm
	534
[2201]	535	!=======================================================================
	536	! **********************************************************************
	537	! Subroutine to determine the vertical transport with
	538	! a Van Leer advection scheme (copied from the sedimentation scheme --> see vlz_fi.F)
	539	!***********************************************************************
	540	SUBROUTINE van_leer(nlay,q,pente_max,masse,w,wq)
[2079]	541
[1974]	542	IMPLICIT NONE
	543
[2201]	544	!--------------------------------------------------------
	545	! Input/Output Variables
	546	!--------------------------------------------------------
	547	INTEGER,INTENT(IN) :: nlay ! number of atmospheric layers
	548	REAL,INTENT(IN) :: masse(nlay) ! mass of the layer Dp/g
	549	REAL,INTENT(IN) :: pente_max != 2 conseillee
	550	REAL,INTENT(INOUT) :: q(nlay) ! mixing ratio (kg/kg)
	551	REAL,INTENT(INOUT) :: w(nlay) ! atmospheric mass "transferred" at each timestep (kg.m-2)
	552	REAL,INTENT(INOUT) :: wq(nlay+1)
	553
	554	!--------------------------------------------------------
	555	! Local Variables
	556	!--------------------------------------------------------
	557
[1974]	558	INTEGER i,l,j,ii
[2079]	559	REAL dzq(nlay),dzqw(nlay),adzqw(nlay),dzqmax
	560	REAL newmasse
	561	REAL sigw, Mtot, MQtot
	562	INTEGER m
[1974]	563
[2201]	564	! **********************************************************************
	565	! Mixing ratio vertical gradient at the levels
	566	! **********************************************************************
[1974]	567	do l=2,nlay
	568	dzqw(l)=q(l-1)-q(l)
	569	adzqw(l)=abs(dzqw(l))
	570	enddo
	571
	572	do l=2,nlay-1
	573	if(dzqw(l)*dzqw(l+1).gt.0.) then
	574	dzq(l)=0.5*(dzqw(l)+dzqw(l+1))
	575	else
	576	dzq(l)=0.
	577	endif
	578	dzqmax=pente_max*min(adzqw(l),adzqw(l+1))
	579	dzq(l)=sign(min(abs(dzq(l)),dzqmax),dzq(l))
	580	enddo
	581
	582	dzq(1)=0.
	583	dzq(nlay)=0.
[2079]	584
[2201]	585	! **********************************************************************
	586	! Vertical advection
	587	! **********************************************************************
[1974]	588
[2201]	589	!! No flux at the model top:
[1974]	590	wq(nlay+1)=0.
	591
[2201]	592	!! Surface flux up:
[2119]	593	if(w(1).lt.0.) wq(1)=0. ! warning : not always valid
[1974]	594
[2201]	595	do l = 1,nlay-1
[2119]	596
[2201]	597	! 1) Compute wq where w < 0 (up) (UPWARD TRANSPORT)
[2119]	598	! ===============================
	599
[1974]	600	if(w(l+1).le.0)then
	601	! Regular scheme (transfered mass < 1 layer)
	602	! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
	603	if(-w(l+1).le.masse(l))then
	604	sigw=w(l+1)/masse(l)
	605	wq(l+1)=w(l+1)(q(l)-0.5(1.+sigw)*dzq(l))
[2201]	606	!!-------------------------------------------------------
	607	! The following part should not be needed in the
	608	! case of an integration over subtimesteps
	609	!!-------------------------------------------------------
[1974]	610	! Extended scheme (transfered mass > 1 layer)
	611	! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
	612	else
	613	m = l-1
	614	Mtot = masse(m+1)
	615	MQtot = masse(m+1)*q(m+1)
	616	if (m.le.0)goto 77
	617	do while(-w(l+1).gt.(Mtot+masse(m)))
	618	! do while(-w(l+1).gt.Mtot)
	619	m=m-1
	620	Mtot = Mtot + masse(m+1)
	621	MQtot = MQtot + masse(m+1)*q(m+1)
	622	if (m.le.0)goto 77
	623	end do
	624	77 continue
	625
	626	if (m.gt.0) then
	627	sigw=(w(l+1)+Mtot)/masse(m)
[2079]	628	wq(l+1)= -(MQtot + (-w(l+1)-Mtot)* &
[1974]	629	(q(m)-0.5(1.+sigw)dzq(m)) )
	630	else
	631	w(l+1) = -Mtot
	632	wq(l+1) = -MQtot
	633	end if
[2119]	634	endif ! (-w(l+1).le.masse(l))
[1974]	635
[2201]	636	! 2) Compute wq where w > 0 (down) (DOWNWARD TRANSPORT)
[1974]	637	! ===============================
	638
[2119]	639	else if(w(l).gt.0.)then
[1974]	640
	641	! Regular scheme (transfered mass < 1 layer)
	642	! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
	643	if(w(l).le.masse(l))then
	644	sigw=w(l)/masse(l)
[2201]	645	wq(l)=w(l)(q(l)+0.5(1.-sigw)*dzq(l))
	646	!!-------------------------------------------------------
	647	! The following part should not be needed in the
	648	! case of an integration over subtimesteps
	649	!!-------------------------------------------------------
[1974]	650	! Extended scheme (transfered mass > 1 layer)
	651	! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
	652	else
	653	m=l
	654	Mtot = masse(m)
	655	MQtot = masse(m)*q(m)
	656	if(m.ge.nlay)goto 88
	657	do while(w(l).gt.(Mtot+masse(m+1)))
	658	m=m+1
	659	Mtot = Mtot + masse(m)
	660	MQtot = MQtot + masse(m)*q(m)
	661	if(m.ge.nlay)goto 88
	662	end do
	663	88 continue
	664	if (m.lt.nlay) then
	665	sigw=(w(l)-Mtot)/masse(m+1)
	666	wq(l)=(MQtot + (w(l)-Mtot)* &
	667	(q(m+1)+0.5(1.-sigw)dzq(m+1)) )
	668	else
	669	w(l) = Mtot
	670	wq(l) = MQtot
	671	end if
[2119]	672	end if
[2100]	673
[2119]	674	end if ! w<0 (up)
[2100]	675
[2119]	676	enddo ! l = 1,nlay-1
[1974]	677
[2201]	678	do l = 1,nlay
[1974]	679
[2119]	680	! it cannot entrain more than available mass !
	681	if ( (wq(l+1)-wq(l)) .lt. -(masse(l)*q(l)) ) then
	682	wq(l+1) = wq(l)-masse(l)*q(l)
	683	end if
	684
[1974]	685	q(l)=q(l) + (wq(l+1)-wq(l))/masse(l)
	686
	687	enddo
[2079]	688
[2201]	689	END SUBROUTINE van_leer
[1974]	690
[2079]	691	!=======================================================================
	692	! Initialization of the module variables
[1974]	693
	694	subroutine ini_rocketduststorm_mod(ngrid)
	695
	696	implicit none
	697
	698	integer, intent(in) :: ngrid
	699
	700	allocate(dustliftday(ngrid))
	701
	702	end subroutine ini_rocketduststorm_mod
	703
	704	subroutine end_rocketduststorm_mod
	705
	706	implicit none
	707
	708	if (allocated(dustliftday)) deallocate(dustliftday)
	709
	710	end subroutine end_rocketduststorm_mod
	711
	712	END MODULE rocketduststorm_mod

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