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rocketduststorm_mod.F90 @ 2937

Last change on this file since 2937 was 2934, checked in by emillour, 3 years ago
Mars PCM: A first step in cleaning up outputs and adding field definitions for XIOS. EM
File size: 31.6 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, &
[2826]	27	tsurf,co2ice,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
[2826]	44	USE surfdat_h, only: emis,zmea, zstd, zsig, hmons
[2226]	45	USE callradite_mod, only: callradite
[2932]	46	use write_output_mod, only: write_output
[2079]	47	IMPLICIT NONE
[1974]	48
[2160]	49	include "callkeys.h"
	50
[1974]	51	!--------------------------------------------------------
	52	! Input Variables
	53	!--------------------------------------------------------
	54
	55	INTEGER, INTENT(IN) :: ngrid ! number of horizontal grid points
	56	INTEGER, INTENT(IN) :: nlayer ! number of vertical grid points
	57	INTEGER, INTENT(IN) :: nq ! number of tracer species
	58	REAL, INTENT(IN) :: ptime
	59	REAL, INTENT(IN) :: ptimestep
	60
	61	REAL, INTENT(IN) :: pq(ngrid,nlayer,nq) ! advected field nq
	62	REAL, INTENT(IN) :: pdqfi(ngrid,nlayer,nq)! tendancy field pq
	63	REAL, INTENT(IN) :: pt(ngrid,nlayer) ! temperature at mid-layer (K)
	64	REAL, INTENT(IN) :: pdtfi(ngrid,nlayer) ! tendancy temperature at mid-layer (K)
	65
	66	REAL, INTENT(IN) :: pplay(ngrid,nlayer) ! pressure at middle of the layers
	67	REAL, INTENT(IN) :: pplev(ngrid,nlayer+1) ! pressure at intermediate levels
	68	REAL, INTENT(IN) :: pzlay(ngrid,nlayer) ! altitude at the middle of the layers
	69	REAL, INTENT(IN) :: pzlev(ngrid,nlayer+1) ! altitude at layer boundaries
	70
	71	REAL, INTENT(IN) :: pdtsw(ngrid,nlayer) ! (K/s) env
	72	REAL, INTENT(IN) :: pdtlw(ngrid,nlayer) ! (K/s) env
	73
	74	! input for second radiative transfer
[2079]	75	LOGICAL, INTENT(IN) :: clearatm
[1974]	76	INTEGER, INTENT(INOUT) :: icount
[2079]	77	REAL, INTENT(IN) :: zday
	78	REAL, INTENT(IN) :: zls
	79	REAL, INTENT(IN) :: tsurf(ngrid)
[2826]	80	REAL,INTENT(IN) :: co2ice(ngrid) ! co2 ice surface layer (kg.m-2)
[2079]	81	INTEGER, INTENT(IN) :: igout
	82	REAL, INTENT(IN) :: totstormfract(ngrid)
[2226]	83	REAL, INTENT(INOUT) :: tauscaling(ngrid)
[2643]	84	REAL,INTENT(INOUT) :: dust_rad_adjust(ngrid)
	85	REAL,INTENT(INOUT) :: IRtoVIScoef(ngrid) ! NB: not modified by this call to callradite,
	86	! the OUT is just here because callradite needs it
[2079]	87
[2628]	88	! subgrid scale water ice clouds
[1974]	89	logical, intent(in) :: clearsky
[2199]	90	real, intent(in) :: totcloudfrac(ngrid)
	91
[2628]	92	! subgrid scale topography
[2199]	93	LOGICAL, INTENT(IN) :: nohmons
[1974]	94
	95	!--------------------------------------------------------
	96	! Output Variables
	97	!--------------------------------------------------------
	98
	99	REAL, INTENT(OUT) :: pdqrds(ngrid,nlayer,nq) ! tendancy field for dust when detraining
[2079]	100	REAL, INTENT(OUT) :: wrad(ngrid,nlayer+1) ! vertical speed within the rocket dust storm
[2415]	101	REAL, INTENT(OUT) :: dsodust(ngrid,nlayer) ! density scaled opacity of env. dust
	102	REAL, INTENT(OUT) :: dsords(ngrid,nlayer) ! density scaled opacity of storm dust
	103	REAL, INTENT(OUT) :: dsotop(ngrid,nlayer) ! density scaled opacity of topmons dust
	104	REAL,INTENT(OUT) :: tau_pref_scenario(ngrid) ! prescribed dust column
	105	! visible opacity at odpref
	106	REAL,INTENT(OUT) :: tau_pref_gcm(ngrid) ! dust column visible opacity at
	107	! odpref in the GCM
[1974]	108	!--------------------------------------------------------
	109	! Local variables
	110	!--------------------------------------------------------
[2201]	111	INTEGER l,ig,iq,ll
[2079]	112	! local variables from callradite.F
[1974]	113	REAL zdtlw1(ngrid,nlayer) ! (K/s) storm
	114	REAL zdtsw1(ngrid,nlayer) ! (K/s) storm
	115	REAL zt(ngrid,nlayer) ! actual temperature at mid-layer (K)
[2091]	116	REAL zdtvert(ngrid,nlayer) ! dT/dz , lapse rate
	117	REAL ztlev(ngrid,nlayer) ! temperature at intermediate levels l+1/2 without last level
[1974]	118
[2079]	119	REAL zdtlw1_lev(nlayer),zdtsw1_lev(nlayer) ! rad. heating rate at intermediate levels l+1/2 for stormdust
	120	REAL zdtlw_lev(nlayer),zdtsw_lev(nlayer) ! rad. heating rate at intermediate levels l+1/2 for background dust
[1974]	121
[2079]	122	REAL zq_stormdust_mass(ngrid,nlayer) ! intermediate tracer stormdust mass
	123	REAL zq_stormdust_number(ngrid,nlayer) ! intermediate tracer stormdust number
	124	REAL zq_dust_mass(ngrid,nlayer) ! intermediate tracer dust mass
	125	REAL zq_dust_number(ngrid,nlayer) ! intermediate tracer dust number
[1974]	126
[2079]	127	REAL mr_stormdust_mass(ngrid,nlayer) ! intermediate mixing ratio to calculate van leer transport with the "real" concentration (stormdust mass)
	128	REAL mr_stormdust_number(ngrid,nlayer) ! intermediate mixing ratio to calculate van leer transport with the "real" concentration (stormdust number)
	129	REAL mr_dust_mass(ngrid,nlayer) ! intermediate mixing ratio to calculate van leer transport with the "real" concentration (dust mass)
	130	REAL mr_dust_number(ngrid,nlayer) ! intermediate mixing ratio to calculate van leer transport with the "real" concentration (sdust number)
	131
	132	REAL dqvl_stormdust_mass(ngrid,nlayer) ! tendancy of vertical transport (stormdust mass)
	133	REAL dqvl_stormdust_number(ngrid,nlayer) ! tendancy of vertical transport (stormdust number)
	134	REAL dqvl_dust_mass(ngrid,nlayer) ! tendancy of vertical transport (dust mass)
	135	REAL dqvl_dust_number(ngrid,nlayer) ! tendancy of vertical transport (dust number)
	136	REAL dqdet_stormdust_mass(ngrid,nlayer) ! tendancy of detrainement (stormdust mass)
	137	REAL dqdet_stormdust_number(ngrid,nlayer) ! tendancy of detrainement (stormdust number)
[1974]	138
[2090]	139	REAL masse_col(nlayer) ! mass of atmosphere (kg/m2)
[1974]	140	REAL zq(ngrid,nlayer,nq) ! updated tracers
	141
[2090]	142	REAL w(ngrid,nlayer) ! air mass flux (calculated with the vertical wind velocity profile) used as input in Van Leer (kgair/m2)
	143	REAL wqmass(ngrid,nlayer+1) ! tracer (dust_mass) mass flux in Van Leer (kg/m2)
	144	REAL wqnumber(ngrid,nlayer+1) ! tracer (dust_number) mass flux in Van Leer (kg/m2)
[1974]	145
[2079]	146	LOGICAL storm(ngrid) ! true when there is a dust storm (if the opacity is high): trigger the rocket dust storm scheme
[2160]	147	REAL detrain(ngrid,nlayer) ! coefficient for detrainment : % of stormdust detrained
[2079]	148	INTEGER scheme(ngrid) ! triggered scheme
	149
	150	REAL,PARAMETER:: coefmin =0.025 ! 0<coefmin<1 Minimum fraction of stormdust detrained
[2201]	151	REAL,PARAMETER:: wmin =0.25 ! stormdust detrainment if wrad < wmin
[2079]	152	REAL,PARAMETER:: wmax =10. ! maximum vertical velocity of the rocket dust storms (m/s)
[2201]	153
	154	! subtimestep
	155	INTEGER tsub
	156	INTEGER nsubtimestep !number of subtimestep when calling van_leer
	157	REAL subtimestep !ptimestep/nsubtimestep
	158	REAL dtmax !considered time needed for dust to cross one layer
	159	REAL,PARAMETER:: secu=3.!3. !coefficient on wspeed to avoid dust crossing many layers during subtimestep
	160
[2079]	161	! diagnostics
	162	REAL lapserate(ngrid,nlayer)
	163	REAL deltahr(ngrid,nlayer+1)
[1974]	164
[2079]	165	LOGICAL,SAVE :: firstcall=.true.
[2616]	166
	167	!$OMP THREADPRIVATE(firstcall)
[2079]	168
	169	! variables for the radiative transfer
[1974]	170	REAL fluxsurf_lw1(ngrid)
[2685]	171	REAL fluxsurf_dn_sw1(ngrid,2),fluxsurf_up_sw1(ngrid,2)
[1974]	172	REAL fluxtop_lw1(ngrid)
[2685]	173	REAL fluxtop_dn_sw1(ngrid,2),fluxtop_up_sw1(ngrid,2)
[1974]	174	REAL tau(ngrid,naerkind)
	175	REAL aerosol(ngrid,nlayer,naerkind)
	176	REAL taucloudtes(ngrid)
	177	REAL rdust(ngrid,nlayer)
	178	REAL rstormdust(ngrid,nlayer)
[2199]	179	REAL rtopdust(ngrid,nlayer)
[1974]	180	REAL rice(ngrid,nlayer)
	181	REAL nuice(ngrid,nlayer)
[2459]	182	DOUBLE PRECISION riceco2(ngrid,nlayer)
[2448]	183	REAL nuiceco2(ngrid,nlayer)
[1974]	184
	185	! **********************************************************************
	186	! **********************************************************************
[2079]	187	! Rocket dust storm parametrization to reproduce the detached dust layers
	188	! during the dust storm season:
[1974]	189	! The radiative warming due to the presence of storm dust is
	190	! balanced by the adiabatic cooling. The tracer "storm dust"
	191	! is transported by the upward/downward flow.
	192	! **********************************************************************
	193	! **********************************************************************
	194	!! 1. Radiative transfer in storm dust
	195	!! 2. Compute vertical velocity for storm dust
[2079]	196	!! case 1 storm = false: nothing to do
	197	!! case 2 rocket dust storm (storm=true)
	198	!! 3. Vertical transport (Van Leer)
[1974]	199	!! 4. Detrainment
	200	! **********************************************************************
	201	! **********************************************************************
	202
	203
	204	! **********************************************************************
[2079]	205	! Initializations
[1974]	206	! **********************************************************************
	207	storm(:)=.false.
	208	pdqrds(:,:,:) = 0.
[2079]	209	mr_dust_mass(:,:)=0.
	210	mr_dust_number(:,:)=0.
	211	mr_stormdust_mass(:,:)=0.
	212	mr_stormdust_number(:,:)=0.
	213	dqvl_dust_mass(:,:)=0.
	214	dqvl_dust_number(:,:)=0.
	215	dqvl_stormdust_mass(:,:)=0.
	216	dqvl_stormdust_number(:,:)=0.
	217	dqdet_stormdust_mass(:,:)=0.
	218	dqdet_stormdust_number(:,:)=0.
	219	wrad(:,:)=0.
[2090]	220	w(:,:)=0.
	221	wqmass(:,:)=0.
	222	wqnumber(:,:)=0.
[2091]	223	zdtvert(:,:)=0.
[1974]	224	lapserate(:,:)=0.
	225	deltahr(:,:)=0.
	226	scheme(:)=0
[2160]	227	detrain(:,:)=1.
[2083]	228
[1974]	229	!! no update for the stormdust tracer and temperature fields
	230	!! because previous callradite was for background dust
	231	zq(1:ngrid,1:nlayer,1:nq)=pq(1:ngrid,1:nlayer,1:nq)
	232	zt(1:ngrid,1:nlayer)=pt(1:ngrid,1:nlayer)
	233
	234
[2079]	235	zq_dust_mass(1:ngrid,1:nlayer)=zq(1:ngrid,1:nlayer,igcm_dust_mass)
	236	zq_dust_number(1:ngrid,1:nlayer)=zq(1:ngrid,1:nlayer,igcm_dust_number)
	237	zq_stormdust_mass(1:ngrid,1:nlayer)=zq(1:ngrid,1:nlayer,igcm_stormdust_mass)
	238	zq_stormdust_number(1:ngrid,1:nlayer)=zq(1:ngrid,1:nlayer,igcm_stormdust_number)
	239
	240	! *********************************************************************
	241	! 0. Check if there is a storm
	242	! *********************************************************************
	243	DO ig=1,ngrid
[1974]	244	storm(ig)=.false.
[2079]	245	DO l=1,nlayer
	246	IF (zq(ig,l,igcm_stormdust_mass) &
	247	.gt. zq(ig,l,igcm_dust_mass)*(1.E-4)) THEN
[1974]	248	storm(ig)=.true.
[2079]	249	EXIT
	250	ENDIF
	251	ENDDO
	252	ENDDO
[1974]	253
	254	! *********************************************************************
	255	! 1. Call the second radiative transfer for stormdust, obtain the extra heating
	256	! *********************************************************************
[2199]	257	CALL callradite(icount,ngrid,nlayer,nq,zday,zls,pq,albedo, &
	258	emis,mu0,pplev,pplay,pt,tsurf,fract,dist_sol,igout, &
[2685]	259	zdtlw1,zdtsw1,fluxsurf_lw1,fluxsurf_dn_sw1,fluxsurf_up_sw1, &
	260	fluxtop_lw1,fluxtop_dn_sw1,fluxtop_up_sw1, &
	261	tau_pref_scenario,tau_pref_gcm, &
[2643]	262	tau,aerosol,dsodust,tauscaling,dust_rad_adjust,IRtoVIScoef, &
[2448]	263	taucloudtes,rdust,rice,nuice,riceco2,nuiceco2,co2ice,rstormdust,rtopdust, &
[2628]	264	totstormfract,clearatm,dsords,dsotop,nohmons,&
[1974]	265	clearsky,totcloudfrac)
	266
	267	! **********************************************************************
	268	! 2. Compute vertical velocity for storm dust
[2079]	269	! **********************************************************************
[1974]	270	!! **********************************************************************
[2079]	271	!! 2.1 Nothing to do when no storm
	272	!! no storm
	273	DO ig=1,ngrid
	274	IF (.NOT.(storm(ig))) then
	275	scheme(ig)=1
	276	cycle
	277	ENDIF ! IF (storm(ig))
	278	ENDDO ! DO ig=1,ngrid
[1974]	279
[2079]	280	!! **********************************************************************
	281	!! 2.2 Calculation of the extra heating : computing heating rates
	282	!! gradient at boundaries of each layer, start from surface
	283	DO ig=1,ngrid
[2091]	284	IF (storm(ig)) THEN
	285
	286	scheme(ig)=2
[1974]	287
[2091]	288	!! computing heating rates gradient at boundraies of each layer
	289	!! start from surface
	290	zdtlw1_lev(1)=0.
	291	zdtsw1_lev(1)=0.
	292	zdtlw_lev(1)=0.
	293	zdtsw_lev(1)=0.
	294	ztlev(ig,1)=zt(ig,1)
[1974]	295
[2091]	296	DO l=1,nlayer-1
	297	!! Calculation for the dust storm fraction
	298	zdtlw1_lev(l+1)=(zdtlw1(ig,l)*(pzlay(ig,l+1)-pzlev(ig,l+1))+ &
	299	zdtlw1(ig,l+1)*(pzlev(ig,l+1)-pzlay(ig,l))) / &
	300	(pzlay(ig,l+1)-pzlay(ig,l))
	301
	302	zdtsw1_lev(l+1)=(zdtsw1(ig,l)*(pzlay(ig,l+1)-pzlev(ig,l+1))+ &
	303	zdtsw1(ig,l+1)*(pzlev(ig,l+1)-pzlay(ig,l))) / &
	304	(pzlay(ig,l+1)-pzlay(ig,l))
	305	!! Calculation for the background dust fraction
	306	zdtlw_lev(l+1)=(pdtlw(ig,l)*(pzlay(ig,l+1)-pzlev(ig,l+1))+ &
	307	pdtlw(ig,l+1)*(pzlev(ig,l+1)-pzlay(ig,l))) / &
	308	(pzlay(ig,l+1)-pzlay(ig,l))
[2079]	309
[2091]	310	zdtsw_lev(l+1)=(pdtsw(ig,l)*(pzlay(ig,l+1)-pzlev(ig,l+1))+ &
	311	pdtsw(ig,l+1)*(pzlev(ig,l+1)-pzlay(ig,l))) / &
	312	(pzlay(ig,l+1)-pzlay(ig,l))
[2079]	313
[2091]	314	ztlev(ig,l+1)=(zt(ig,l)*(pzlay(ig,l+1)-pzlev(ig,l+1))+ &
	315	zt(ig,l+1)*(pzlev(ig,l+1)-pzlay(ig,l))) / &
	316	(pzlay(ig,l+1)-pzlay(ig,l))
[2201]	317	ENDDO ! DO l=1,nlayer-1
[1974]	318
[2201]	319	!! This is the env. lapse rate
	320	zdtvert(ig,1)=0.
	321	DO l=1,nlayer-1
	322	zdtvert(ig,l+1)=(ztlev(ig,l+1)-ztlev(ig,l))/(pzlay(ig,l+1)-pzlay(ig,l))
	323	lapserate(ig,l+1)=zdtvert(ig,l+1)
	324	ENDDO
	325
[2091]	326	!! **********************************************************************
	327	!! 2.3 Calculation of the vertical velocity : extra heating
	328	!! balanced by adiabatic cooling
	329
[2079]	330	DO l=1,nlayer
	331	deltahr(ig,l)=(zdtlw1_lev(l)+zdtsw1_lev(l)) &
	332	-(zdtlw_lev(l)+zdtsw_lev(l))
	333	wrad(ig,l)=-deltahr(ig,l)/(g/cpp+ &
[2091]	334	max(zdtvert(ig,l),-0.99*g/cpp))
[2079]	335	!! Limit vertical wind in case of lapse rate close to adiabatic
	336	wrad(ig,l)=max(wrad(ig,l),-wmax)
	337	wrad(ig,l)=min(wrad(ig,l),wmax)
	338	ENDDO
[2091]	339
[2079]	340	ENDIF ! IF (storm(ig))
	341	ENDDO ! DO ig=1,ngrid
[1974]	342
	343	! **********************************************************************
	344	! 3. Vertical transport
	345	! **********************************************************************
[2079]	346	!! **********************************************************************
	347	!! 3.1 Transport of background dust + storm dust (concentrated)
	348	DO ig=1,ngrid
	349	IF (storm(ig)) THEN
	350	DO l=1,nlayer
	351	mr_dust_mass(ig,l) = zq_dust_mass(ig,l)
	352	mr_dust_number(ig,l) = zq_dust_number(ig,l)
	353	mr_stormdust_mass(ig,l) = zq_dust_mass(ig,l)+ &
	354	zq_stormdust_mass(ig,l)/totstormfract(ig)
	355	mr_stormdust_number(ig,l) = zq_dust_number(ig,l)+ &
	356	zq_stormdust_number(ig,l)/totstormfract(ig)
	357	ENDDO ! DO l=1,nlayer
	358	ENDIF ! IF (storm(ig))
	359	ENDDO ! DO ig=1,ngrid
[1974]	360
[2079]	361	DO ig=1,ngrid
	362	IF (storm(ig)) THEN
[2201]	363	!! **********************************************************************
	364	!! 3.2 Compute the subtimestep to conserve the mass in the Van Leer transport
	365	dtmax=ptimestep
	366	DO l=2,nlayer
	367	IF (wrad(ig,l).lt.0.) THEN
	368	dtmax=min(dtmax,(pzlev(ig,l)-pzlev(ig,l-1))/ &
	369	(secu*abs(wrad(ig,l))))
	370	ELSE IF (wrad(ig,l).gt.0.) then
	371	dtmax=min(dtmax,(pzlev(ig,l+1)-pzlev(ig,l))/ &
	372	(secu*abs(wrad(ig,l))))
	373	ENDIF
	374	ENDDO
	375	nsubtimestep= int(ptimestep/dtmax)
	376	subtimestep=ptimestep/float(nsubtimestep)
	377	!! Mass flux generated by wup in kg/m2
	378	DO l=1,nlayer
	379	w(ig,l)=wrad(ig,l)pplev(ig,l)/(rztlev(ig,l)) &
	380	*subtimestep
	381	ENDDO ! l=1,nlayer
	382
	383	!! **********************************************************************
	384	!! 3.3 Vertical transport by a Van Leer scheme
[2079]	385	!! Mass of atmosphere in the layer
	386	DO l=1,nlayer
[2090]	387	masse_col(l)=(pplev(ig,l)-pplev(ig,l+1))/g
[2079]	388	ENDDO
[2201]	389	!! Mass flux in kg/m2 if you are not using the subtimestep
	390	!DO l=1,nlayer
	391	! w(ig,l)=wrad(ig,l)(pplev(ig,l)/(rztlev(ig,l)))*ptimestep
	392	!ENDDO
	393	!! Loop over the subtimestep
	394	DO tsub=1,nsubtimestep
	395	!! Van Leer scheme
	396	wqmass(ig,:)=0.
	397	wqnumber(ig,:)=0.
	398	CALL van_leer(nlayer,mr_stormdust_mass(ig,:),2., &
	399	masse_col,w(ig,:),wqmass(ig,:))
	400	CALL van_leer(nlayer,mr_stormdust_number(ig,:),2., &
	401	masse_col,w(ig,:),wqnumber(ig,:))
	402	ENDDO !tsub=...
	403
[2079]	404	ENDIF ! IF storm(ig)
	405	ENDDO ! DO ig=1,ngrid
[1974]	406
[2079]	407	!! **********************************************************************
[2201]	408	!! 3.4 Re-calculation of the mixing ratios after vertical transport
[2079]	409	DO ig=1,ngrid
	410	IF (storm(ig)) THEN
	411	DO l=1,nlayer
	412
	413	!! General and "healthy" case
	414	IF (mr_stormdust_mass(ig,l).ge.mr_dust_mass(ig,l)) THEN
	415	zq_dust_mass(ig,l) = mr_dust_mass(ig,l)
	416	zq_dust_number(ig,l) = mr_dust_number(ig,l)
	417	zq_stormdust_mass(ig,l) = totstormfract(ig)*(mr_stormdust_mass(ig,l)-mr_dust_mass(ig,l))
	418	zq_stormdust_number(ig,l) = totstormfract(ig)*(mr_stormdust_number(ig,l)-mr_dust_number(ig,l))
	419	!! Particular case: there is less than initial dust mixing ratio after the vertical transport
	420	ELSE
	421	zq_dust_mass(ig,l) = (1.-totstormfract(ig))mr_dust_mass(ig,l)+totstormfract(ig)mr_stormdust_mass(ig,l)
	422	zq_dust_number(ig,l) = (1.-totstormfract(ig))mr_dust_number(ig,l)+totstormfract(ig)mr_stormdust_number(ig,l)
	423	zq_stormdust_mass(ig,l) = 0.
	424	zq_stormdust_number(ig,l) = 0.
	425	ENDIF
	426
	427	ENDDO ! DO l=1,nlayer
	428	ENDIF ! IF storm(ig)
	429	ENDDO ! DO ig=1,ngrid
[1974]	430
[2079]	431	!! **********************************************************************
[2201]	432	!! 3.5 Calculation of the tendencies of the vertical transport
[2079]	433	DO ig=1,ngrid
	434	IF (storm(ig)) THEN
	435	DO l=1,nlayer
	436	dqvl_stormdust_mass(ig,l) = (zq_stormdust_mass(ig,l)- &
	437	zq(ig,l,igcm_stormdust_mass)) /ptimestep
	438	dqvl_stormdust_number(ig,l) = (zq_stormdust_number(ig,l)- &
	439	zq(ig,l,igcm_stormdust_number)) /ptimestep
	440	dqvl_dust_mass(ig,l) = (zq_dust_mass(ig,l)-zq(ig,l,igcm_dust_mass)) /ptimestep
	441	dqvl_dust_number(ig,l) = (zq_dust_number(ig,l)-zq(ig,l,igcm_dust_number)) /ptimestep
	442	ENDDO
	443	ENDIF ! IF storm(ig)
	444	ENDDO ! DO ig=1,ngrid
[1974]	445
	446	! **********************************************************************
[2079]	447	! 4. Detrainment: stormdust is converted to background dust
[1974]	448	! **********************************************************************
[2079]	449	!! **********************************************************************
	450	!! 4.1 Compute the coefficient of detrainmen
	451	DO ig=1,ngrid
	452	DO l=1,nlayer
	453	IF ((max(abs(wrad(ig,l)),abs(wrad(ig,l+1))) .lt. &
	454	wmin) .or. (zq_dust_mass(ig,l) .gt. &
	455	10000.*zq_stormdust_mass(ig,l))) THEN
[2160]	456	detrain(ig,l)=1.
[2079]	457	ELSE IF (max(abs(wrad(ig,l)),abs(wrad(ig,l+1))) &
	458	.le. wmax) THEN
[2160]	459	detrain(ig,l)=coeff_detrainment* &
	460	(((1-coefmin)/(wmin-wmax)*2) &
	461	(max(abs(wrad(ig,l)),abs(wrad(ig,l+1)))-wmax)**2 &
	462	+coefmin)
[2079]	463	ELSE IF (max(abs(wrad(ig,l)),abs(wrad(ig,l+1))).gt. wmax ) THEN
[2160]	464	detrain(ig,l)=coefmin
[2079]	465	ELSE
[2160]	466	detrain(ig,l)=coefmin
[2079]	467	ENDIF
	468	ENDDO ! DO l=1,nlayer
	469	ENDDO ! DO ig=1,ngrid
	470
	471	!! **********************************************************************
	472	!! 4.2 Calculation of the tendencies of the detrainment
	473	DO ig=1,ngrid
	474	DO l=1,nlayer
[2160]	475	dqdet_stormdust_mass(ig,l)=-detrain(ig,l)*zq_stormdust_mass(ig,l) &
[1974]	476	/ptimestep
[2160]	477	dqdet_stormdust_number(ig,l)=-detrain(ig,l)*zq_stormdust_number(ig,l) &
[1974]	478	/ptimestep
[2079]	479	ENDDO ! DO l=1,nlayer
	480	ENDDO ! DO ig=1,ngrid
	481
	482	! **********************************************************************
	483	! 5. Final tendencies: vertical transport + detrainment
	484	! **********************************************************************
	485	DO ig=1,ngrid
	486	DO l=1,nlayer
	487	pdqrds(ig,l,igcm_stormdust_mass)=dqdet_stormdust_mass(ig,l) &
	488	+dqvl_stormdust_mass(ig,l)
	489	pdqrds(ig,l,igcm_stormdust_number)=dqdet_stormdust_number(ig,l) &
	490	+dqvl_stormdust_number(ig,l)
	491	pdqrds(ig,l,igcm_dust_mass)= -dqdet_stormdust_mass(ig,l) &
	492	+dqvl_dust_mass(ig,l)
	493	pdqrds(ig,l,igcm_dust_number)= -dqdet_stormdust_number(ig,l) &
	494	+dqvl_dust_number(ig,l)
	495	ENDDO ! DO l=1,nlayer
	496	ENDDO ! DO ig=1,ngrid
[1974]	497
[2201]	498	! ! **********************************************************************
	499	! ! 6. To prevent from negative values
	500	! ! **********************************************************************
	501	! DO ig=1,ngrid
	502	! DO l=1,nlayer
	503	! IF ((pq(ig,l,igcm_stormdust_mass) &
	504	! +pdqrds(ig,l,igcm_stormdust_mass)*ptimestep .le. 0.) .or. &
	505	! (pq(ig,l,igcm_stormdust_number) &
	506	! +pdqrds(ig,l,igcm_stormdust_number)*ptimestep .le. 0.)) THEN
	507	! pdqrds(ig,l,igcm_stormdust_mass)=-pq(ig,l,igcm_stormdust_mass)/ptimestep
	508	! pdqrds(ig,l,igcm_stormdust_number)=-pq(ig,l,igcm_stormdust_number)/ptimestep
	509	! ENDIF
	510	! ENDDO ! nlayer
	511	! ENDDO ! DO ig=1,ngrid
	512	!
	513	! DO ig=1,ngrid
	514	! DO l=1,nlayer
	515	! IF ((pq(ig,l,igcm_dust_mass) &
	516	! +pdqrds(ig,l,igcm_dust_mass)*ptimestep .le. 0.) .or. &
	517	! (pq(ig,l,igcm_dust_number) &
	518	! +pdqrds(ig,l,igcm_dust_number)*ptimestep .le. 0.)) THEN
	519	! pdqrds(ig,l,igcm_dust_mass)=-pq(ig,l,igcm_dust_mass)/ptimestep
	520	! pdqrds(ig,l,igcm_dust_number)=-pq(ig,l,igcm_dust_number)/ptimestep
	521	! ENDIF
	522	! ENDDO ! nlayer
	523	! ENDDO ! DO ig=1,ngrid
[2079]	524
	525	!=======================================================================
	526	! WRITEDIAGFI
	527
[2934]	528	call write_output('rds_lapserate', &
	529	'lapse rate in the rocket dust storm', &
	530	'K/m',lapserate(:,:))
	531	call write_output('rds_deltahr', &
	532	'extra heating rate in the rocket dust storm', &
	533	'K/s',deltahr(:,:))
	534	! call write_output('scheme','which scheme',&
	535	! ' ',real(scheme(:)))
[2079]	536
[1974]	537	END SUBROUTINE rocketduststorm
	538
[2201]	539	!=======================================================================
	540	! **********************************************************************
	541	! Subroutine to determine the vertical transport with
	542	! a Van Leer advection scheme (copied from the sedimentation scheme --> see vlz_fi.F)
	543	!***********************************************************************
	544	SUBROUTINE van_leer(nlay,q,pente_max,masse,w,wq)
[2079]	545
[1974]	546	IMPLICIT NONE
	547
[2201]	548	!--------------------------------------------------------
	549	! Input/Output Variables
	550	!--------------------------------------------------------
	551	INTEGER,INTENT(IN) :: nlay ! number of atmospheric layers
	552	REAL,INTENT(IN) :: masse(nlay) ! mass of the layer Dp/g
	553	REAL,INTENT(IN) :: pente_max != 2 conseillee
	554	REAL,INTENT(INOUT) :: q(nlay) ! mixing ratio (kg/kg)
	555	REAL,INTENT(INOUT) :: w(nlay) ! atmospheric mass "transferred" at each timestep (kg.m-2)
	556	REAL,INTENT(INOUT) :: wq(nlay+1)
	557
	558	!--------------------------------------------------------
	559	! Local Variables
	560	!--------------------------------------------------------
	561
[1974]	562	INTEGER i,l,j,ii
[2079]	563	REAL dzq(nlay),dzqw(nlay),adzqw(nlay),dzqmax
	564	REAL newmasse
	565	REAL sigw, Mtot, MQtot
	566	INTEGER m
[1974]	567
[2201]	568	! **********************************************************************
	569	! Mixing ratio vertical gradient at the levels
	570	! **********************************************************************
[1974]	571	do l=2,nlay
	572	dzqw(l)=q(l-1)-q(l)
	573	adzqw(l)=abs(dzqw(l))
	574	enddo
	575
	576	do l=2,nlay-1
	577	if(dzqw(l)*dzqw(l+1).gt.0.) then
	578	dzq(l)=0.5*(dzqw(l)+dzqw(l+1))
	579	else
	580	dzq(l)=0.
	581	endif
	582	dzqmax=pente_max*min(adzqw(l),adzqw(l+1))
	583	dzq(l)=sign(min(abs(dzq(l)),dzqmax),dzq(l))
	584	enddo
	585
	586	dzq(1)=0.
	587	dzq(nlay)=0.
[2079]	588
[2201]	589	! **********************************************************************
	590	! Vertical advection
	591	! **********************************************************************
[1974]	592
[2201]	593	!! No flux at the model top:
[1974]	594	wq(nlay+1)=0.
	595
[2201]	596	!! Surface flux up:
[2119]	597	if(w(1).lt.0.) wq(1)=0. ! warning : not always valid
[1974]	598
[2201]	599	do l = 1,nlay-1
[2119]	600
[2201]	601	! 1) Compute wq where w < 0 (up) (UPWARD TRANSPORT)
[2119]	602	! ===============================
	603
[1974]	604	if(w(l+1).le.0)then
	605	! Regular scheme (transfered mass < 1 layer)
	606	! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
	607	if(-w(l+1).le.masse(l))then
	608	sigw=w(l+1)/masse(l)
	609	wq(l+1)=w(l+1)(q(l)-0.5(1.+sigw)*dzq(l))
[2201]	610	!!-------------------------------------------------------
	611	! The following part should not be needed in the
	612	! case of an integration over subtimesteps
	613	!!-------------------------------------------------------
[1974]	614	! Extended scheme (transfered mass > 1 layer)
	615	! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
	616	else
	617	m = l-1
	618	Mtot = masse(m+1)
	619	MQtot = masse(m+1)*q(m+1)
	620	if (m.le.0)goto 77
	621	do while(-w(l+1).gt.(Mtot+masse(m)))
	622	! do while(-w(l+1).gt.Mtot)
	623	m=m-1
	624	Mtot = Mtot + masse(m+1)
	625	MQtot = MQtot + masse(m+1)*q(m+1)
	626	if (m.le.0)goto 77
	627	end do
	628	77 continue
	629
	630	if (m.gt.0) then
	631	sigw=(w(l+1)+Mtot)/masse(m)
[2079]	632	wq(l+1)= -(MQtot + (-w(l+1)-Mtot)* &
[1974]	633	(q(m)-0.5(1.+sigw)dzq(m)) )
	634	else
	635	w(l+1) = -Mtot
	636	wq(l+1) = -MQtot
	637	end if
[2119]	638	endif ! (-w(l+1).le.masse(l))
[1974]	639
[2201]	640	! 2) Compute wq where w > 0 (down) (DOWNWARD TRANSPORT)
[1974]	641	! ===============================
	642
[2119]	643	else if(w(l).gt.0.)then
[1974]	644
	645	! Regular scheme (transfered mass < 1 layer)
	646	! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
	647	if(w(l).le.masse(l))then
	648	sigw=w(l)/masse(l)
[2201]	649	wq(l)=w(l)(q(l)+0.5(1.-sigw)*dzq(l))
	650	!!-------------------------------------------------------
	651	! The following part should not be needed in the
	652	! case of an integration over subtimesteps
	653	!!-------------------------------------------------------
[1974]	654	! Extended scheme (transfered mass > 1 layer)
	655	! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
	656	else
	657	m=l
	658	Mtot = masse(m)
	659	MQtot = masse(m)*q(m)
	660	if(m.ge.nlay)goto 88
	661	do while(w(l).gt.(Mtot+masse(m+1)))
	662	m=m+1
	663	Mtot = Mtot + masse(m)
	664	MQtot = MQtot + masse(m)*q(m)
	665	if(m.ge.nlay)goto 88
	666	end do
	667	88 continue
	668	if (m.lt.nlay) then
	669	sigw=(w(l)-Mtot)/masse(m+1)
	670	wq(l)=(MQtot + (w(l)-Mtot)* &
	671	(q(m+1)+0.5(1.-sigw)dzq(m+1)) )
	672	else
	673	w(l) = Mtot
	674	wq(l) = MQtot
	675	end if
[2119]	676	end if
[2100]	677
[2119]	678	end if ! w<0 (up)
[2100]	679
[2119]	680	enddo ! l = 1,nlay-1
[1974]	681
[2201]	682	do l = 1,nlay
[1974]	683
[2119]	684	! it cannot entrain more than available mass !
	685	if ( (wq(l+1)-wq(l)) .lt. -(masse(l)*q(l)) ) then
	686	wq(l+1) = wq(l)-masse(l)*q(l)
	687	end if
	688
[1974]	689	q(l)=q(l) + (wq(l+1)-wq(l))/masse(l)
	690
	691	enddo
[2079]	692
[2201]	693	END SUBROUTINE van_leer
[1974]	694
[2079]	695	!=======================================================================
	696	! Initialization of the module variables
[1974]	697
	698	subroutine ini_rocketduststorm_mod(ngrid)
	699
	700	implicit none
	701
	702	integer, intent(in) :: ngrid
	703
	704	allocate(dustliftday(ngrid))
	705
	706	end subroutine ini_rocketduststorm_mod
	707
	708	subroutine end_rocketduststorm_mod
	709
	710	implicit none
	711
	712	if (allocated(dustliftday)) deallocate(dustliftday)
	713
	714	end subroutine end_rocketduststorm_mod
	715
	716	END MODULE rocketduststorm_mod

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