diff --git a/src/MNH/ini_aeroset1.f90 b/src/MNH/ini_aeroset1.f90
index 5048577ac1f123343beeb03f4764ea643a07fa55..869ade50617ff16582b5ca8bc0354aa4fe0f155e 100644
--- a/src/MNH/ini_aeroset1.f90
+++ b/src/MNH/ini_aeroset1.f90
@@ -1,4 +1,4 @@
-!ORILAM_LIC Copyright 1994-2014 CNRS, Meteo-France and Universite Paul Sabatier
+!ORILAM_LIC Copyright 2011-2019 CNRS, Meteo-France and Universite Paul Sabatier
 !ORILAM_LIC This is part of the ORILAM software governed by the CeCILL-C licence
 !ORILAM_LIC version 1. See LICENSE, CeCILL-C_V1-en.txt and CeCILL-C_V1-fr.txt
 !ORILAM_LIC for details.
@@ -23,8 +23,13 @@ END MODULE MODI_INI_AEROSET1
 
 USE MODD_AEROSET
 
+use mode_msg
+
 IMPLICIT NONE
 
+if ( .not.allocated( POLYTAU ) ) &
+      call Print_msg( NVERB_FATAL, 'GEN', 'INI_AEROSET1', 'POLYTAU not allocated')
+
 POLYTAU(1, 1,1,1,1:13 )=(/     -733.61139,  -13649.90625,  -99755.00000, &
  -355288.34375, -608672.87500, -390948.84375,     -22.75222,     156.46201, &
     -340.26620,     315.24551,    -450.78485,     626.89001,       0.12454 /)
diff --git a/src/MNH/ini_modeln.f90 b/src/MNH/ini_modeln.f90
index dad3e933933a55d6a761bae30c453cecf9a0e377..a7ff5457c1cfbe7464077149deef90d0492ec766 100644
--- a/src/MNH/ini_modeln.f90
+++ b/src/MNH/ini_modeln.f90
@@ -286,175 +286,177 @@ END MODULE MODI_INI_MODEL_n
 !  P. Wautelet 14/03/2019: correct ZWS when variable not present in file (set to XZWS_DEFAULT)
 !  P. Wautelet 10/04/2019: replace ABORT and STOP calls by Print_msg
 !  P. Wautelet 19/04/2019: removed unused dummy arguments and variables
+!  P. Wautelet 07/06/2019: allocate lookup tables for optical properties only when needed
 !---------------------------------------------------------------------------------
 !
 !*       0.    DECLARATIONS
 !              ------------
 !
-#ifdef CPLOASIS
-  USE MODI_SFX_OASIS_READ_NAM
+#ifdef MNH_ECRAD
+USE YOERDI,                 only: RCCO2
 #endif
-!
-USE MODE_ll
-USE MODD_ARGSLIST_ll, ONLY : LIST_ll
-USE MODE_IO
-USE MODE_IO_MANAGE_STRUCT, ONLY: IO_File_add2list
-USE MODE_IO_FILE,          ONLY: IO_File_open
-USE MODE_IO_FIELD_READ,    only: IO_Field_read
-USE MODE_INI_ONE_WAY_n
-USE MODE_GATHER_ll
-USE MODE_MSG
-USE MODE_TYPE_ZDIFFU
-!
-USE MODD_NSV
-USE MODD_PARAMETERS
-USE MODD_CST
+
+USE MODD_2D_FRC
+USE MODD_ADVFRC_n
+USE MODD_ADV_n
+use MODD_AEROSET,           only: POLYTAU, POLYSSA, POLYG
+USE MODD_ARGSLIST_ll,       only: LIST_ll
+USE MODD_BIKHARDT_n
+USE MODD_BLOWSNOW
+USE MODD_BLOWSNOW_n
+USE MODD_BUDGET
+USE MODD_CH_AERO_n,         only: XSOLORG,XMI
+USE MODD_CH_AEROSOL,        only: LORILAM
+USE MODD_CH_BUDGET_n
+USE MODD_CH_FLX_n,          only: XCHFLX
+USE MODD_CH_M9_n,           only:NNONZEROTERMS
+USE MODD_CH_MNHC_n,         only: LUSECHEM, LUSECHAQ, LUSECHIC, LCH_INIT_FIELD, &
+                                  LCH_CONV_LINOX, XCH_TUV_DOBNEW, LCH_PH
+USE MODD_CH_PH_n
+USE MODD_CH_PRODLOSSTOT_n
+USE MODD_CLOUD_MF_n
 USE MODD_CONF
+USE MODD_CONF_n
+USE MODD_CST
+USE MODD_CTURB
+USE MODD_CURVCOR_n
+USE MODD_DEEP_CONVECTION_n
+USE MODD_DEF_EDDY_FLUX_n   ! for VT and WT fluxes
+USE MODD_DEF_EDDYUV_FLUX_n ! FOR UV
+USE MODD_DIAG_FLAG,         only: LCHEMDIAG, CSPEC_BU_DIAG
+USE MODD_DIM_n
+USE MODD_DRAG_n
+USE MODD_DRAGTREE
 USE MODD_DUST
+use MODD_DUST_OPT_LKT,      only: NMAX_RADIUS_LKT_DUST=>NMAX_RADIUS_LKT, NMAX_SIGMA_LKT_DUST=>NMAX_SIGMA_LKT,               &
+                                  NMAX_WVL_SW_DUST=>NMAX_WVL_SW,                                                            &
+                                  XEXT_COEFF_WVL_LKT_DUST=>XEXT_COEFF_WVL_LKT, XEXT_COEFF_550_LKT_DUST=>XEXT_COEFF_550_LKT, &
+                                  XPIZA_LKT_DUST=>XPIZA_LKT, XCGA_LKT_DUST=>XCGA_LKT
 USE MODD_DYN
-USE MODD_DYNZD
-USE MODD_FRC
-USE MODD_REF
-USE MODD_SERIES, ONLY: LSERIES
-USE MODD_TIME
-USE MODD_TURB_CLOUD, ONLY: NMODEL_CLOUD, CTURBLEN_CLOUD,XCEI
-USE MODD_NESTING,       only: CDAD_NAME, NDAD, NDT_2_WAY, NDTRATIO, NDXRATIO_ALL, NDYRATIO_ALL
-USE MODD_PASPOL
-USE MODD_DRAGTREE
-USE MODD_METRICS_n
 USE MODD_DYN_n
+USE MODD_DYNZD
 USE MODD_DYNZD_n
+USE MODD_ELEC_n,            only: XCION_POS_FW, XCION_NEG_FW
 USE MODD_FIELD_n
-USE MODD_PAST_FIELD_n
-USE MODD_MEAN_FIELD_n
-USE MODD_MEAN_FIELD
-USE MODD_ADV_n
-USE MODD_LSFIELD_n
-USE MODD_GRID_n
-USE MODD_GRID, ONLY: XLONORI,XLATORI
-USE MODD_TIME_n
-USE MODD_REF_n
+#ifdef MNH_FOREFIRE
+USE MODD_FOREFIRE
+USE MODD_FOREFIRE_n
+#endif
+USE MODD_FRC
 USE MODD_FRC_n
-USE MODD_CURVCOR_n
-USE MODD_DIM_n
-USE MODD_BUDGET
-USE MODD_RADIATIONS_n
-USE MODD_SHADOWS_n
-USE MODD_PARAM_RAD_n,   ONLY: CAER, CLW
-USE MODD_VAR_ll,        ONLY : IP
-!
-USE MODD_STAND_ATM,     ONLY : XSTROATM, XSMLSATM, XSMLWATM, XSPOSATM, XSPOWATM
-USE MODD_CH_MNHC_n,     ONLY: LUSECHEM, LUSECHAQ, LUSECHIC, LCH_INIT_FIELD, &
-                              LCH_CONV_LINOX, XCH_TUV_DOBNEW, LCH_PH
-USE MODD_CH_PH_n
-USE MODD_CH_AEROSOL, ONLY : LORILAM
-USE MODD_CH_AERO_n,  ONLY : XSOLORG,XMI
-USE MODD_CH_FLX_n,  ONLY : XCHFLX
+USE MODD_GET_n
+USE MODD_GRID_n
+USE MODD_GRID,              only: XLONORI,XLATORI
+USE MODD_IO,                only: CIO_DIR, TFILEDATA, TFILE_DUMMY
+USE MODD_IO_SURF_MNH,       only: IO_SURF_MNH_MODEL
+USE MODD_LATZ_EDFLX
+USE MODD_LBC_n,             only: CLBCX, CLBCY
+USE MODD_LSFIELD_n
+USE MODD_LUNIT_n
+USE MODD_MEAN_FIELD
+USE MODD_MEAN_FIELD_n
+USE MODD_METRICS_n
+USE MODD_MNH_SURFEX_n
+USE MODD_NESTING,           only: CDAD_NAME, NDAD, NDT_2_WAY, NDTRATIO, NDXRATIO_ALL, NDYRATIO_ALL
+USE MODD_NSV
+USE MODD_NSV
+USE MODD_NUDGING_n,         only: LNUDGING
+USE MODD_OUT_n
+USE MODD_PARAMETERS
 USE MODD_PARAM_KAFR_n
 USE MODD_PARAM_MFSHALL_n
-USE MODD_DEEP_CONVECTION_n
-USE MODD_OUT_n
-USE MODD_BIKHARDT_n
-USE MODD_NUDGING_n, ONLY : LNUDGING
-USE MODD_DIAG_FLAG, ONLY : LCHEMDIAG, CSPEC_BU_DIAG
-USE MODD_CLOUD_MF_n
-USE MODD_NSV
-!
-USE MODD_ELEC_n, ONLY : XCION_POS_FW, XCION_NEG_FW
-
-USE MODD_LUNIT_n
-USE MODD_CONF_n
-USE MODD_GET_n
-USE MODD_TURB_n
-USE MODD_CTURB
-USE MODD_LBC_n,         only: CLBCX, CLBCY
+USE MODD_PARAM_n
+USE MODD_PARAM_RAD_n,       only: CAER, CAOP, CLW
+USE MODD_PASPOL
 USE MODD_PASPOL_n
-USE MODD_DRAG_n
-USE MODD_BLOWSNOW
-USE MODD_BLOWSNOW_n
-use modd_precision, only: LFIINT
-!
-!
-USE MODI_INI_BUDGET
-USE MODI_INI_SW_SETUP
-USE MODI_INI_LW_SETUP
-USE MODI_SET_GRID
-USE MODI_METRICS
-USE MODI_UPDATE_METRICS
-USE MODI_READ_FIELD
-USE MODI_SET_REF
-USE MODI_INI_DYNAMICS
-USE MODI_INI_TKE_EPS
-USE MODI_SET_DIRCOS
-USE MODI_INI_CPL
-USE MODI_INI_RADIATIONS
-USE MODI_INI_RADIATIONS_ECMWF
-USE MODI_INI_RADIATIONS_ECRAD
+USE MODD_PAST_FIELD_n
+use modd_precision,         only: LFIINT
+USE MODD_RADIATIONS_n
+USE MODD_REF
+USE MODD_REF_n
+USE MODD_RELFRC_n
+use MODD_SALT,              only: LSALT
+use MODD_SALT_OPT_LKT,      only: NMAX_RADIUS_LKT_SALT=>NMAX_RADIUS_LKT, NMAX_SIGMA_LKT_SALT=>NMAX_SIGMA_LKT,               &
+                                  NMAX_WVL_SW_SALT=>NMAX_WVL_SW,                                                            &
+                                  XEXT_COEFF_WVL_LKT_SALT=>XEXT_COEFF_WVL_LKT, XEXT_COEFF_550_LKT_SALT=>XEXT_COEFF_550_LKT, &
+                                  XPIZA_LKT_SALT=>XPIZA_LKT, XCGA_LKT_SALT=>XCGA_LKT
+USE MODD_SERIES,            only: LSERIES
+USE MODD_SHADOWS_n
+USE MODD_STAND_ATM,         only: XSTROATM, XSMLSATM, XSMLWATM, XSPOSATM, XSPOWATM
+USE MODD_TIME
+USE MODD_TIME_n
+USE MODD_TURB_CLOUD,        only: NMODEL_CLOUD, CTURBLEN_CLOUD,XCEI
+USE MODD_TURB_n
+USE MODD_VAR_ll,            only: IP
+
+USE MODE_GATHER_ll
+USE MODE_INI_ONE_WAY_n
+USE MODE_IO
+USE MODE_IO_FIELD_READ,     only: IO_Field_read
+USE MODE_IO_FILE,           only: IO_File_open
+USE MODE_IO_MANAGE_STRUCT,  only: IO_File_add2list
+USE MODE_ll
+USE MODE_MODELN_HANDLER
+USE MODE_MPPDB
+USE MODE_MSG
+USE MODE_SPLITTINGZ_ll,     only: GET_DIM_EXTZ_ll
+USE MODE_TYPE_ZDIFFU
+
+USE MODI_CH_AER_MOD_INIT
+USE MODI_CH_INIT_BUDGET_n
 USE MODI_CH_INIT_FIELD_n
-USE MODI_INI_DEEP_CONVECTION
-USE MODI_INI_BIKHARDT_n
+USE MODI_CH_INIT_JVALUES
+USE MODI_CH_INIT_PRODLOSSTOT_n
 USE MODI_GET_SIZEX_LB
 USE MODI_GET_SIZEY_LB
-USE MODI_INI_SPAWN_LS_n
-USE MODI_INI_AIRCRAFT_BALLOON
-USE MODI_UPDATE_NSV
-USE MODI_INI_ELEC_n
-USE MODI_INI_MICRO_n
-USE MODI_INI_LG
-USE MODI_SURF_SOLAR_GEOM
-USE MODI_SUNPOS_n
-USE MODI_INI_SURF_RAD
-USE MODI_MNHGET_SURF_PARAM_n
-USE MODI_MNHREAD_ZS_DUMMY_n
-USE MODI_INIT_GROUND_PARAM_n
-USE MODI_INI_AIRCRAFT_BALLOON
-USE MODI_INI_SURFSTATION_n
-USE MODI_INI_POSPROFILER_n
-USE MODI_CH_INIT_JVALUES
-USE MODI_CH_AER_MOD_INIT
-!
-USE MODD_PARAM_n
-USE MODE_MODELN_HANDLER
-USE MODE_SPLITTINGZ_ll , ONLY : GET_DIM_EXTZ_ll
-!
 USE MODI_INI_AEROSET1
 USE MODI_INI_AEROSET2
 USE MODI_INI_AEROSET3
 USE MODI_INI_AEROSET4
 USE MODI_INI_AEROSET5
 USE MODI_INI_AEROSET6
+USE MODI_INI_AIRCRAFT_BALLOON
+USE MODI_INI_AIRCRAFT_BALLOON
+USE MODI_INI_BIKHARDT_n
+USE MODI_INI_BUDGET
+USE MODI_INI_CPL
+USE MODI_INI_DEEP_CONVECTION
 USE MODI_INI_DRAG
-!
-#ifdef MNH_FOREFIRE
-USE MODD_FOREFIRE
-USE MODD_FOREFIRE_n
-USE MODI_INIT_FOREFIRE_n
-#endif
+USE MODI_INI_DYNAMICS
+USE MODI_INI_ELEC_n
 USE MODI_INI_LES_N
-USE MODD_MNH_SURFEX_n
+USE MODI_INI_LG
+USE MODI_INI_LW_SETUP
+USE MODI_INI_MICRO_n
+USE MODI_INI_POSPROFILER_n
+USE MODI_INI_RADIATIONS
+USE MODI_INI_RADIATIONS_ECMWF
+USE MODI_INI_RADIATIONS_ECRAD
 USE MODI_INI_SERIES_N
-! Eddy fluxes  ! Ajout PP
-USE MODD_DEF_EDDY_FLUX_n   ! for VT and WT fluxes
-USE MODD_DEF_EDDYUV_FLUX_n ! FOR UV
-USE MODD_LATZ_EDFLX
-USE MODD_ADVFRC_n
-USE MODD_RELFRC_n
-USE MODD_2D_FRC
-USE MODD_IO_SURF_MNH, ONLY : IO_SURF_MNH_MODEL
-USE MODD_IO,       ONLY: CIO_DIR, TFILEDATA, TFILE_DUMMY
-!
-USE MODD_CH_PRODLOSSTOT_n
-USE MODI_CH_INIT_PRODLOSSTOT_n
-!
-USE MODD_CH_BUDGET_n
-USE MODI_CH_INIT_BUDGET_n
-USE MODD_CH_M9_n, ONLY:NNONZEROTERMS
-!
-USE MODE_MPPDB
+USE MODI_INI_SPAWN_LS_n
+USE MODI_INI_SURF_RAD
+USE MODI_INI_SURFSTATION_n
+USE MODI_INI_SW_SETUP
 USE MODI_INIT_AEROSOL_PROPERTIES
-#ifdef MNH_ECRAD
-USE YOERDI   , ONLY :RCCO2
+#ifdef MNH_FOREFIRE
+USE MODI_INIT_FOREFIRE_n
 #endif
+USE MODI_INIT_GROUND_PARAM_n
+USE MODI_INI_TKE_EPS
+USE MODI_METRICS
+USE MODI_MNHGET_SURF_PARAM_n
+USE MODI_MNHREAD_ZS_DUMMY_n
+USE MODI_READ_FIELD
+USE MODI_SET_DIRCOS
+USE MODI_SET_GRID
+USE MODI_SET_REF
+#ifdef CPLOASIS
+USE MODI_SFX_OASIS_READ_NAM
+#endif
+USE MODI_SUNPOS_n
+USE MODI_SURF_SOLAR_GEOM
+USE MODI_UPDATE_METRICS
+USE MODI_UPDATE_NSV
 !
 IMPLICIT NONE
 !
@@ -2249,6 +2251,20 @@ IF (CRAD   == 'ECMW') THEN
       ZTOWN(:,:) = 0.
       ZBARE(:,:) = 0.
     END IF
+!
+    IF ( CAOP=='EXPL' .AND. LDUST ) THEN
+      ALLOCATE( XEXT_COEFF_WVL_LKT_DUST( NMAX_RADIUS_LKT_DUST, NMAX_SIGMA_LKT_DUST, NMAX_WVL_SW_DUST ) )
+      ALLOCATE( XEXT_COEFF_550_LKT_DUST( NMAX_RADIUS_LKT_DUST, NMAX_SIGMA_LKT_DUST )                   )
+      ALLOCATE( XPIZA_LKT_DUST         ( NMAX_RADIUS_LKT_DUST, NMAX_SIGMA_LKT_DUST, NMAX_WVL_SW_DUST ) )
+      ALLOCATE( XCGA_LKT_DUST          ( NMAX_RADIUS_LKT_DUST, NMAX_SIGMA_LKT_DUST, NMAX_WVL_SW_DUST ) )
+    END IF
+!
+    IF ( CAOP=='EXPL' .AND. LSALT ) THEN
+      ALLOCATE( XEXT_COEFF_WVL_LKT_SALT( NMAX_RADIUS_LKT_SALT, NMAX_SIGMA_LKT_SALT, NMAX_WVL_SW_SALT ) )
+      ALLOCATE( XEXT_COEFF_550_LKT_SALT( NMAX_RADIUS_LKT_SALT, NMAX_SIGMA_LKT_SALT )                   )
+      ALLOCATE( XPIZA_LKT_SALT         ( NMAX_RADIUS_LKT_SALT, NMAX_SIGMA_LKT_SALT, NMAX_WVL_SW_SALT ) )
+      ALLOCATE( XCGA_LKT_SALT          ( NMAX_RADIUS_LKT_SALT, NMAX_SIGMA_LKT_SALT, NMAX_WVL_SW_SALT ) )
+    END IF
 !
     CALL INI_RADIATIONS_ECMWF (XZHAT,XPABST,XTHT,XTSRAD,XLAT,XLON,TDTCUR,TDTEXP,       &
                                CLW,NDLON,NFLEV,NFLUX,NRAD,NSWB_OLD,CAER,NAER,NSTATM,   &
@@ -2399,12 +2415,17 @@ CALL INI_POSPROFILER_n(XTSTEP, TDTSEG, XSEGLEN, NRR, NSV,  &
 !*      26.     Prognostic aerosols          
 !              ------------------------
 !
-CALL INI_AEROSET1
-CALL INI_AEROSET2
-CALL INI_AEROSET3
-CALL INI_AEROSET4
-CALL INI_AEROSET5
-CALL INI_AEROSET6
+IF ( ( CRAD=='ECMW' .OR. CRAD=='ECRA' ) .AND. CAOP=='EXPL' .AND. LORILAM ) THEN
+  ALLOCATE(POLYTAU(6,10,8,6,13))
+  ALLOCATE(POLYSSA(6,10,8,6,13))
+  ALLOCATE(POLYG  (6,10,8,6,13))
+  CALL INI_AEROSET1
+  CALL INI_AEROSET2
+  CALL INI_AEROSET3
+  CALL INI_AEROSET4
+  CALL INI_AEROSET5
+  CALL INI_AEROSET6
+END IF
 #ifdef MNH_FOREFIRE
 ! 
 !-------------------------------------------------------------------------------
diff --git a/src/MNH/ini_radiations_ecmwf.f90 b/src/MNH/ini_radiations_ecmwf.f90
index cf73ab385ef0dd904338bd818d644d3346b48fd2..b7188358438cab4e72bbd722068802212d4110ab 100644
--- a/src/MNH/ini_radiations_ecmwf.f90
+++ b/src/MNH/ini_radiations_ecmwf.f90
@@ -173,43 +173,45 @@ END MODULE MODI_INI_RADIATIONS_ECMWF
 !  P. Wautelet 14/02/2019: remove CLUOUT/CLUOUT0 and associated variables
 !  P. Wautelet 14/02/2019: remove HINIFILE dummy argument
 !  P. Wautelet 26/04/2019: replace non-standard FLOAT function by REAL function
+!  P. Wautelet 07/06/2019: initialize dust and salt optical properties lookup tables only if necessary
 !-------------------------------------------------------------------------------
 !
 !*       0.    DECLARATIONS
 !              ------------
 !ECMWF radiation scheme specific modules 
 !
-USE PARKIND1,  ONLY : JPRB
-USE YOEAERD  , ONLY : RCAEOPS  ,RCAEOPL  ,RCAEOPU  ,RCAEOPD  ,RCTRBGA  ,&
-     RCVOBGA  ,RCSTBGA  ,RCTRPT   ,RCAEADM  ,RCAEROS  ,&
-     RCAEADK
-USE OYOMCST , ONLY : RTT
-USE YOETHF , ONLY : RTICE
+USE OYOMCST,               ONLY: RTT
+USE PARKIND1,              ONLY: JPRB
+USE YOEAERD,               ONLY: RCAEOPS, RCAEOPL, RCAEOPU, RCAEOPD, RCTRBGA, &
+                                 RCVOBGA, RCSTBGA, RCTRPT,  RCAEADM, RCAEROS, &
+                                 RCAEADK
+USE YOETHF,                ONLY: RTICE
 !
 !MESO-NH modules
 !
-USE MODD_TYPE_DATE
-USE MODD_CONF
 USE MODD_CST
+USE MODD_CONF
+use MODD_DUST,             only: LDUST
 USE MODD_GRID
 USE MODD_PARAMETERS
+use MODD_PARAM_RAD_n,      only: CAOP, LFIX_DAT
+use MODD_SALT,             only: LSALT
 USE MODD_STAND_ATM
-USE MODD_PARAM_RAD_n,  ONLY: LFIX_DAT
+USE MODD_TYPE_DATE
 !
+USE MODE_CONSRAD
+USE MODE_DUSTOPT
 USE MODE_ll
+USE MODE_REPRO_SUM
+USE MODE_SALTOPT
 !
-USE MODI_INI_RADCONF
 USE MODI_INI_HOR_AERCLIM
-!
-USE MODE_DUSTOPT
-USE MODE_SALTOPT
-USE MODE_CONSRAD
-USE MODE_REPRO_SUM
+USE MODI_INI_RADCONF
 USE MODI_INI_STAND_ATM
-USE MODI_SUECOZC
+USE MODI_RADAER
 USE MODI_RADOZC
 USE MODI_SUAERV
-USE MODI_RADAER
+USE MODI_SUECOZC
 !
 IMPLICIT NONE
 !
@@ -698,29 +700,31 @@ END DO
 !        Read in look up tables of dust optical properties
 !No arguments, all look up tables are defined in module
 !modd_dust_opt_lkt
-CALL DUST_OPT_LKT_SET1()
-CALL DUST_OPT_LKT_SET2()
-CALL DUST_OPT_LKT_SET3()
-CALL DUST_OPT_LKT_SET4()
-CALL DUST_OPT_LKT_SET5()
-CALL DUST_OPT_LKT_SET6()
-CALL DUST_OPT_LKT_SET7()
-CALL DUST_OPT_LKT_SET8()
-CALL DUST_OPT_LKT_SET9()
-CALL DUST_OPT_LKT_SET10()
-
-CALL SALT_OPT_LKT_SET1()
-CALL SALT_OPT_LKT_SET2()
-CALL SALT_OPT_LKT_SET3()
-CALL SALT_OPT_LKT_SET4()
-CALL SALT_OPT_LKT_SET5()
-CALL SALT_OPT_LKT_SET6()
-CALL SALT_OPT_LKT_SET7()
-CALL SALT_OPT_LKT_SET8()
-CALL SALT_OPT_LKT_SET9()
-CALL SALT_OPT_LKT_SET10()
-
+IF ( LDUST .AND. CAOP=='EXPL' ) THEN
+  CALL DUST_OPT_LKT_SET1()
+  CALL DUST_OPT_LKT_SET2()
+  CALL DUST_OPT_LKT_SET3()
+  CALL DUST_OPT_LKT_SET4()
+  CALL DUST_OPT_LKT_SET5()
+  CALL DUST_OPT_LKT_SET6()
+  CALL DUST_OPT_LKT_SET7()
+  CALL DUST_OPT_LKT_SET8()
+  CALL DUST_OPT_LKT_SET9()
+  CALL DUST_OPT_LKT_SET10()
+END IF
 
+IF ( LSALT .AND. CAOP=='EXPL' ) THEN
+  CALL SALT_OPT_LKT_SET1()
+  CALL SALT_OPT_LKT_SET2()
+  CALL SALT_OPT_LKT_SET3()
+  CALL SALT_OPT_LKT_SET4()
+  CALL SALT_OPT_LKT_SET5()
+  CALL SALT_OPT_LKT_SET6()
+  CALL SALT_OPT_LKT_SET7()
+  CALL SALT_OPT_LKT_SET8()
+  CALL SALT_OPT_LKT_SET9()
+  CALL SALT_OPT_LKT_SET10()
+END IF
 !
 CALL INI_CONS_PROP_OP
 DEALLOCATE (ZPRES_HL) 
diff --git a/src/MNH/modd_aeroset.f90 b/src/MNH/modd_aeroset.f90
index 9fe34721d690c9bf7dad011f45fde7f2a44d7346..311312bd47ff1efff93c1a33f04bd441e0f702f3 100644
--- a/src/MNH/modd_aeroset.f90
+++ b/src/MNH/modd_aeroset.f90
@@ -1,13 +1,8 @@
-!ORILAM_LIC Copyright 1994-2014 CNRS, Meteo-France and Universite Paul Sabatier
+!ORILAM_LIC Copyright 2011-2019 CNRS, Meteo-France and Universite Paul Sabatier
 !ORILAM_LIC This is part of the ORILAM software governed by the CeCILL-C licence
 !ORILAM_LIC version 1. See LICENSE, CeCILL-C_V1-en.txt and CeCILL-C_V1-fr.txt
 !ORILAM_LIC for details.
 !-----------------------------------------------------------------
-!--------------- special set of characters for RCS information
-!-----------------------------------------------------------------
-! $Source$ $Revision$
-! MASDEV4_7 modd 2006/05/18 13:07:25
-!-----------------------------------------------------------------
 !!     ########################
        MODULE MODD_AEROSET
 !!     ########################
@@ -39,14 +34,15 @@
 !!     MODIFICATIONS
 !!     -------------
 !!
+!  P. Wautelet 07/06/2019: arrays are now ALLOCATABLE to save memory when not used
 !!--------------------------------------------------------------------
 !!     DECLARATIONS
 !!     ------------
 
   IMPLICIT NONE
 
-  REAL,SAVE,DIMENSION(6,10,8,6,13) ::POLYTAU
-  REAL,SAVE,DIMENSION(6,10,8,6,13) ::POLYSSA
-  REAL,SAVE,DIMENSION(6,10,8,6,13) ::POLYG
+  REAL,SAVE,DIMENSION(:,:,:,:,:),ALLOCATABLE ::POLYTAU
+  REAL,SAVE,DIMENSION(:,:,:,:,:),ALLOCATABLE ::POLYSSA
+  REAL,SAVE,DIMENSION(:,:,:,:,:),ALLOCATABLE ::POLYG
 
 END MODULE MODD_AEROSET
diff --git a/src/MNH/modd_dust_opt_lkt.f90 b/src/MNH/modd_dust_opt_lkt.f90
index a8b88a9e194dea2e61735d94ba5b31bbc347c601..449fc2811f11b70aedc690bf90a6aba49c91a948 100644
--- a/src/MNH/modd_dust_opt_lkt.f90
+++ b/src/MNH/modd_dust_opt_lkt.f90
@@ -1,13 +1,8 @@
-!ORILAM_LIC Copyright 1994-2014 CNRS, Meteo-France and Universite Paul Sabatier
+!ORILAM_LIC Copyright 2006-2019 CNRS, Meteo-France and Universite Paul Sabatier
 !ORILAM_LIC This is part of the ORILAM software governed by the CeCILL-C licence
 !ORILAM_LIC version 1. See LICENSE, CeCILL-C_V1-en.txt and CeCILL-C_V1-fr.txt
 !ORILAM_LIC for details.
 !-----------------------------------------------------------------
-!--------------- special set of characters for RCS information
-!-----------------------------------------------------------------
-! $Source$ $Revision$
-! MASDEV4_7 modd 2006/05/18 13:07:25
-!-----------------------------------------------------------------
 !!     ########################
        MODULE MODD_DUST_OPT_LKT
 !!     ########################
@@ -42,6 +37,7 @@
 !!     MODIFICATIONS
 !!     -------------
 !!
+!  P. Wautelet 07/06/2019: arrays are now ALLOCATABLE to save memory when not used
 !!--------------------------------------------------------------------
 !!     DECLARATIONS
 !!     ------------
@@ -54,10 +50,10 @@
   INTEGER, PARAMETER    :: NMAX_WVL_SW=6       !Max number of wavelengths in lkt
 
   !Declaration of the look up tables 
-  REAL, DIMENSION(NMAX_RADIUS_LKT,NMAX_SIGMA_LKT,NMAX_WVL_SW) :: XEXT_COEFF_WVL_LKT
-  REAL, DIMENSION(NMAX_RADIUS_LKT,NMAX_SIGMA_LKT)             :: XEXT_COEFF_550_LKT
-  REAL, DIMENSION(NMAX_RADIUS_LKT,NMAX_SIGMA_LKT,NMAX_WVL_SW) :: XPIZA_LKT
-  REAL, DIMENSION(NMAX_RADIUS_LKT,NMAX_SIGMA_LKT,NMAX_WVL_SW) :: XCGA_LKT
+  REAL, SAVE, DIMENSION(:,:,:), ALLOCATABLE :: XEXT_COEFF_WVL_LKT
+  REAL, SAVE, DIMENSION(:,:),   ALLOCATABLE :: XEXT_COEFF_550_LKT
+  REAL, SAVE, DIMENSION(:,:,:), ALLOCATABLE :: XPIZA_LKT
+  REAL, SAVE, DIMENSION(:,:,:), ALLOCATABLE :: XCGA_LKT
 
   !Declaration of the max and min values taken into account in the tables
   REAL, PARAMETER      :: XRADIUS_LKT_MIN = 0.01  ![um] smallest number median radius taken into account
diff --git a/src/MNH/modd_salt_opt_lkt.f90 b/src/MNH/modd_salt_opt_lkt.f90
index d6b12b0b5b57b10796bc15b145f56e4e0c5825cb..702bc081bf1ba271c3e77752a40a7bb9e8189c89 100644
--- a/src/MNH/modd_salt_opt_lkt.f90
+++ b/src/MNH/modd_salt_opt_lkt.f90
@@ -1,13 +1,8 @@
-!ORILAM_LIC Copyright 1994-2014 CNRS, Meteo-France and Universite Paul Sabatier
+!ORILAM_LIC Copyright 2011-2019 CNRS, Meteo-France and Universite Paul Sabatier
 !ORILAM_LIC This is part of the ORILAM software governed by the CeCILL-C licence
 !ORILAM_LIC version 1. See LICENSE, CeCILL-C_V1-en.txt and CeCILL-C_V1-fr.txt
 !ORILAM_LIC for details.
 !-----------------------------------------------------------------
-!--------------- special set of characters for RCS information
-!-----------------------------------------------------------------
-! $Source$ $Revision$
-! MASDEV4_7 modd 2006/05/18 13:07:25
-!-----------------------------------------------------------------
 !!     ########################
        MODULE MODD_SALT_OPT_LKT
 !!     ########################
@@ -42,6 +37,7 @@
 !!     MODIFICATIONS
 !!     -------------
 !!
+!  P. Wautelet 07/06/2019: arrays are now ALLOCATABLE to save memory when not used
 !!--------------------------------------------------------------------
 !!     DECLARATIONS
 !!     ------------
@@ -54,10 +50,10 @@
   INTEGER, PARAMETER    :: NMAX_WVL_SW=6       !Max number of wavelengths in lkt
 
   !Declaration of the look up tables 
-  REAL, DIMENSION(NMAX_RADIUS_LKT,NMAX_SIGMA_LKT,NMAX_WVL_SW) :: XEXT_COEFF_WVL_LKT
-  REAL, DIMENSION(NMAX_RADIUS_LKT,NMAX_SIGMA_LKT)             :: XEXT_COEFF_550_LKT
-  REAL, DIMENSION(NMAX_RADIUS_LKT,NMAX_SIGMA_LKT,NMAX_WVL_SW) :: XPIZA_LKT
-  REAL, DIMENSION(NMAX_RADIUS_LKT,NMAX_SIGMA_LKT,NMAX_WVL_SW) :: XCGA_LKT
+  REAL, SAVE, DIMENSION(:,:,:), ALLOCATABLE :: XEXT_COEFF_WVL_LKT
+  REAL, SAVE, DIMENSION(:,:),   ALLOCATABLE :: XEXT_COEFF_550_LKT
+  REAL, SAVE, DIMENSION(:,:,:), ALLOCATABLE :: XPIZA_LKT
+  REAL, SAVE, DIMENSION(:,:,:), ALLOCATABLE :: XCGA_LKT
 
   !Declaration of the max and min values taken into account in the tables
   REAL, PARAMETER      :: XRADIUS_LKT_MIN = 0.01  ![um] smallest number median radius taken into account
diff --git a/src/MNH/mode_dustopt.f90 b/src/MNH/mode_dustopt.f90
index 6a85251e3827ae1166526bd4049c775ac2964204..c9c78d1444921ee91149af7636e4d7d52fc38b4b 100644
--- a/src/MNH/mode_dustopt.f90
+++ b/src/MNH/mode_dustopt.f90
@@ -1,13 +1,8 @@
-!ORILAM_LIC Copyright 1994-2014 CNRS, Meteo-France and Universite Paul Sabatier
+!ORILAM_LIC Copyright 2006-2019 CNRS, Meteo-France and Universite Paul Sabatier
 !ORILAM_LIC This is part of the ORILAM software governed by the CeCILL-C licence
 !ORILAM_LIC version 1. See LICENSE, CeCILL-C_V1-en.txt and CeCILL-C_V1-fr.txt
 !ORILAM_LIC for details.
 !-----------------------------------------------------------------
-!--------------- special set of characters for RCS information
-!-----------------------------------------------------------------
-! $Source$ $Revision$
-! masdev4_7 BUG1 2007/06/29 12:06:27
-!-----------------------------------------------------------------
 !        ###################
          MODULE MODE_DUSTOPT
 !        ###################
@@ -325,8 +320,13 @@ CONTAINS
 
     USE MODD_DUST_OPT_LKT
 
+    use mode_msg
+
     IMPLICIT NONE
-    
+
+    if ( .not.allocated( XEXT_COEFF_WVL_LKT ) ) &
+      call Print_msg( NVERB_FATAL, 'GEN', 'DUST_OPT_LKT_SET1', 'XEXT_COEFF_WVL_LKT not allocated')
+
     !Here are the output values from the mie program:
 XEXT_COEFF_WVL_LKT(1,1,1:6)=(/ 92.520000,37.760000,21.553000,5.277700,2.711100,1.337700 /)
 XPIZA_LKT(1,1,1:6)=(/ 0.431792,0.157096,0.049108,0.030213,0.005366,0.000659 /)
diff --git a/src/MNH/mode_saltopt.f90 b/src/MNH/mode_saltopt.f90
index d7fd28f3f1912d0a897de0aa93aebc050b6a761a..5cda0f3bbb19ac227b50ffd7b4bd9e814a50e2a6 100644
--- a/src/MNH/mode_saltopt.f90
+++ b/src/MNH/mode_saltopt.f90
@@ -1,11 +1,8 @@
-!ORILAM_LIC Copyright 1994-2014 CNRS, Meteo-France and Universite Paul Sabatier
+!ORILAM_LIC Copyright 2011-2019 CNRS, Meteo-France and Universite Paul Sabatier
 !ORILAM_LIC This is part of the ORILAM software governed by the CeCILL-C licence
 !ORILAM_LIC version 1. See LICENSE, CeCILL-C_V1-en.txt and CeCILL-C_V1-fr.txt
 !ORILAM_LIC for details.
 !-----------------------------------------------------------------
-!--------------- special set of characters for RCS information
-!-----------------------------------------------------------------
-!-----------------------------------------------------------------
 !        ###################
          MODULE MODE_SALTOPT
 !        ###################
@@ -336,8 +333,13 @@ CONTAINS
 
     USE MODD_SALT_OPT_LKT
 
+    use mode_msg
+
     IMPLICIT NONE
-    
+
+    if ( .not.allocated( XEXT_COEFF_WVL_LKT ) ) &
+      call Print_msg( NVERB_FATAL, 'GEN', 'SALT_OPT_LKT_SET1', 'XEXT_COEFF_WVL_LKT not allocated')
+
     !Here are the output values from the mie program:
 XEXT_COEFF_WVL_LKT(1,1,1:6)=(/ 44.560000,11.638000,0.691110,0.260970,0.532810,132.670000 /)
 XPIZA_LKT(1,1,1:6)=(/ 0.236252,0.196169,0.900,0.900,0.900,0.000010 /)