diff --git a/src/MNH/default_desfmn.f90 b/src/MNH/default_desfmn.f90
index a5d28030d88c7706332d98de04f7db63a7659678..a0817ad3d45431477a4b89d4f809982237968cad 100644
--- a/src/MNH/default_desfmn.f90
+++ b/src/MNH/default_desfmn.f90
@@ -95,7 +95,8 @@ END MODULE MODI_DEFAULT_DESFM_n
!! Module MODD_FRC :
!!
!! LGEOST_UV_FRC,LGEOST_TH_FRC,LTEND_THRV_FRC
-!! LVERT_MOTION_FRC,LRELAX_THRV_FRC,LRELAX_UV_FRC,XRELAX_TIME_FRC
+!! LVERT_MOTION_FRC,LRELAX_THRV_FRC,LRELAX_UV_FRC,LRELAX_UVMEAN_FRC,
+!! XRELAX_TIME_FRC
!! XRELAX_HEIGHT_FRC,CRELAX_HEIGHT_TYPE,LTRANS,XUTRANS,XVTRANS,
!! LPGROUND_FRC
!!
@@ -216,6 +217,7 @@ END MODULE MODI_DEFAULT_DESFM_n
! JL Redelsperger 06/2021: add parameters allowing to active idealized oceanic convection
! B. Vie 06/2021: add prognostic supersaturation for LIMA
! Q. Rodier 06/2021: modify default value to LGZ=F (grey-zone corr.), LSEDI and OSEDC=T (LIMA sedimentation)
+! F. Couvreux 06/2021: add LRELAX_UVMEAN_FRC
!-------------------------------------------------------------------------------
!
!* 0. DECLARATIONS
@@ -796,6 +798,7 @@ IF (KMI == 1) THEN
LVERT_MOTION_FRC = .FALSE.
LRELAX_THRV_FRC = .FALSE.
LRELAX_UV_FRC = .FALSE.
+ LRELAX_UVMEAN_FRC = .FALSE.
XRELAX_TIME_FRC = 10800.
XRELAX_HEIGHT_FRC = 0.
CRELAX_HEIGHT_TYPE = "FIXE"
diff --git a/src/MNH/forcing.f90 b/src/MNH/forcing.f90
index 062cd4afa4cd7221157c6e5e550a96145bc38730..04a4a91cd280cb170667db196631e49d3b3d9d88 100644
--- a/src/MNH/forcing.f90
+++ b/src/MNH/forcing.f90
@@ -149,6 +149,7 @@ END MODULE MODI_FORCING
! use overloaded comparison operator for date_time
! P. Wautelet 05/2016-04/2018: new data structures and calls for I/O
! P. Wautelet 02/2020: use the new data structures and subroutines for budgets
+! F. Couvreux 06/2021: add LRELAX_UVMEAN_FRC : relaxation applied to the horizontal avg. wind (for LES)
!-------------------------------------------------------------------------------
!
!* 0. DECLARATIONS
@@ -169,9 +170,13 @@ USE MODD_TIME
!
use mode_budget, only: Budget_store_init, Budget_store_end
USE MODE_DATETIME
+USE MODE_GATHER_ll
USE MODE_MSG
+USE MODE_ll
+USE MODE_REPRO_SUM
!
USE MODI_GET_HALO
+USE MODI_LES_MEAN_ll
USE MODI_SHUMAN
USE MODI_UPSTREAM_Z
!
@@ -209,6 +214,9 @@ REAL, DIMENSION(:,:,:), INTENT(IN) :: PJ
!* 0.2 Declarations of local variables
!
INTEGER :: IIU, IJU, IKU ! dimensions
+INTEGER :: IIB,IJB,IIE,IJE ! physical domain dimensions
+INTEGER :: IKB, IKE !
+INTEGER :: IIMAX_ll,IJMAX_ll
INTEGER, SAVE :: JSX ! saved loop index
INTEGER :: JI, JJ, JK, JL, JXP! loop indexes
!
@@ -248,11 +256,18 @@ INTEGER :: IRESP ! Return code of FM-routines
!
LOGICAL,DIMENSION(SIZE(PTHT,1),SIZE(PTHT,2),SIZE(PTHT,3)) :: GRELAX_MASK_FRC
!
+REAL, DIMENSION(:,:,:), ALLOCATABLE :: ZUMEAN, ZVMEAN
+REAL :: ZTEMPU, ZTEMPV
+!
!----------------------------------------------------------------------------
!
IIU=SIZE(PUT,1)
IJU=SIZE(PUT,2)
IKU=SIZE(PUT,3)
+IKE = SIZE(PUT,3) - JPVEXT
+IKB = 1 + JPVEXT
+CALL GET_INDICE_ll( IIB,IJB,IIE,IJE)
+CALL GET_GLOBALDIMS_ll ( IIMAX_ll,IJMAX_ll)
!
ILUOUT0 = TLUOUT0%NLU
@@ -479,6 +494,8 @@ ALLOCATE(ZDUF(SIZE(PUT,1),SIZE(PUT,2),SIZE(PUT,3)))
ALLOCATE(ZDVF(SIZE(PVT,1),SIZE(PVT,2),SIZE(PVT,3)))
ALLOCATE(ZTENDUF(SIZE(PUT,1),SIZE(PUT,2),SIZE(PUT,3)))
ALLOCATE(ZTENDVF(SIZE(PVT,1),SIZE(PVT,2),SIZE(PVT,3)))
+ALLOCATE(ZUMEAN(SIZE(PUT,1),SIZE(PUT,2),SIZE(PUT,3)))
+ALLOCATE(ZVMEAN(SIZE(PVT,1),SIZE(PVT,2),SIZE(PVT,3)))
!
IF (LFLAT) THEN
!
@@ -782,7 +799,7 @@ PVFRC_PAST(:,:,:) = ZVF(:,:,:)
!
!* 4.4 integration of the thermal, moisture and wind relaxation
!
-IF( LRELAX_THRV_FRC .OR. LRELAX_UV_FRC ) THEN
+IF( LRELAX_THRV_FRC .OR. LRELAX_UV_FRC .OR. LRELAX_UVMEAN_FRC) THEN
!
ZDZZ(:,:,:) = DZM(MZF(PZZ(:,:,:)))
ZDZZ(:,:,IKU) = PZZ(:,:,IKU) - PZZ(:,:,IKU-1)
@@ -837,6 +854,25 @@ IF( LRELAX_THRV_FRC .OR. LRELAX_UV_FRC ) THEN
END WHERE
!
END IF
+!
+ IF ( LRELAX_UVMEAN_FRC ) THEN
+ DO JK=IKB,IKE
+ ZTEMPU=SUM_DD_R2_ll(PUT(IIB:IIE,IJB:IJE,JK))/REAL(IIMAX_ll*IJMAX_ll)
+ ZUMEAN(:,:,JK) = ZTEMPU
+ ZTEMPV=SUM_DD_R2_ll(PVT(IIB:IIE,IJB:IJE,JK))/REAL(IIMAX_ll*IJMAX_ll)
+ ZVMEAN(:,:,JK) = ZTEMPV
+ END DO
+!
+! apply UV relaxation on the horizontal-average value of UV
+!
+ WHERE( GRELAX_MASK_FRC )
+ PRUS(:,:,:) = PRUS(:,:,:) - MXM(PRHODJ(:,:,:))*(ZUMEAN(:,:,:)-ZUF(:,:,:)) &
+ / XRELAX_TIME_FRC
+ PRVS(:,:,:) = PRVS(:,:,:) - MYM(PRHODJ(:,:,:))*(ZVMEAN(:,:,:)-ZVF(:,:,:)) &
+ / XRELAX_TIME_FRC
+ END WHERE
+!
+ END IF
!
END IF
!
@@ -891,6 +927,8 @@ DEALLOCATE(ZDZZ)
DEALLOCATE(ZRWCF)
DEALLOCATE(ZDUF)
DEALLOCATE(ZDVF)
+DEALLOCATE(ZUMEAN)
+DEALLOCATE(ZVMEAN)
!
!----------------------------------------------------------------------------
!
diff --git a/src/MNH/modd_frc.f90 b/src/MNH/modd_frc.f90
index 0627e3f4fcbdfbce2cc1536fc368f73887593acc..91994b803da64a835311586ea0b9d46bf31edfc7 100644
--- a/src/MNH/modd_frc.f90
+++ b/src/MNH/modd_frc.f90
@@ -17,9 +17,9 @@
! and the translation speed of the domain of simulation.
! The following control parameters are used by FORCING:
! - LGEOST_UV_FRC and LGEOST_TH_FRC
-! - LTEND_THRV_FRC
+! - LTEND_THRV_FRC and LTEND_UV_FRC
! - LVERT_MOTION_FRC
-! - LRELAX_THRV_FRC and LRELAX_UV_FRC using:
+! - LRELAX_THRV_FRC, LRELAX_UV_FRC and LRELAX_UVMEAN_FRC using:
! XRELAX_TIME_FRC, XRELAX_HEIGHT_FRC and CRELAX_HEIGHT_TYPE
! - LTRANS
!!
@@ -46,6 +46,7 @@
!! 01/2004 V. Masson surface externalization: removes SST forcing
!! 09/2017 Q.Rodier add LTEND_UV_FRC
!! 03/2021 JL Redelsperger Parameters defining sfc forcing shape for idealized ocean case
+!! 06/2021 F. Couvreux add LRELAX_UVMEAN_FRC
!-------------------------------------------------------------------------------
!
!* 0. DECLARATIONS
@@ -88,7 +89,8 @@ LOGICAL, SAVE :: LTEND_UV_FRC ! enables tendency forcing of the wind
LOGICAL, SAVE :: LVERT_MOTION_FRC ! enables prescribed a forced vertical
! transport for all prognostic variables
LOGICAL, SAVE :: LRELAX_THRV_FRC ! enables temp. and humidity relaxation
-LOGICAL, SAVE :: LRELAX_UV_FRC ! enables horizontal wind relaxation
+LOGICAL, SAVE :: LRELAX_UV_FRC ! enables horizontal wind relaxation applied to the full wind field
+LOGICAL, SAVE :: LRELAX_UVMEAN_FRC ! enables horizontal wind relaxation applied to the horiz. avg. wind
!
REAL, SAVE :: XRELAX_TIME_FRC ! e-folding time for relaxation
REAL, SAVE :: XRELAX_HEIGHT_FRC ! height below which relaxation
diff --git a/src/MNH/modn_frc.f90 b/src/MNH/modn_frc.f90
index ae7d5e41dac257a6881440f4d0a291f65794a562..42e04d16e941a48f3483e5e49a5666dd7c0ef953 100644
--- a/src/MNH/modn_frc.f90
+++ b/src/MNH/modn_frc.f90
@@ -14,9 +14,9 @@
! This module contains the following control parameters are used
! by FORCING:
! - LGEOST_UV_FRC and LGEOST_TH_FRC
-! - LTEND_THRV_FRC
-! - LVERT_MOTION_FRC
-! - LRELAX_THRV_FRC and LRELAX_UV_FRC using:
+! - LTEND_THRV_FRC and LTEND_UV_FRC
+! - LVERT_MOTION_FRC
+! - LRELAX_THRV_FRC, LRELAX_UV_FRC and LRELAX_UVMEAN_FRC using:
! XRELAX_TIME_FRC, XRELAX_HEIGHT_FRC and CRELAX_HEIGHT_TYPE
! - LTRANS
! XUTRANS, XVTRANS
@@ -43,6 +43,7 @@
!! add SST and surf pressure forcing
!! 06/2003 (V. Masson) removes SST forcing (externalisation of surface)
!! 09/2017 Q.Rodier add LTEND_UV_FRC
+!! 06/2021 F.Couvreux add LRELAX_UVMEAN_FRC
!-------------------------------------------------------------------------------
USE MODD_FRC
!
@@ -55,6 +56,7 @@ NAMELIST /NAM_FRC/ LGEOST_UV_FRC , &
LVERT_MOTION_FRC , &
LRELAX_THRV_FRC , &
LRELAX_UV_FRC , &
+ LRELAX_UVMEAN_FRC , &
XRELAX_TIME_FRC , &
XRELAX_HEIGHT_FRC , &
CRELAX_HEIGHT_TYPE , &
diff --git a/src/MNH/read_exsegn.f90 b/src/MNH/read_exsegn.f90
index 793e407af8923876d115ba8af9d4002d89a919b5..a8c847c3f280ae1e4f7e1a27561252b676a3c574 100644
--- a/src/MNH/read_exsegn.f90
+++ b/src/MNH/read_exsegn.f90
@@ -2363,15 +2363,24 @@ IF ( LFORCING ) THEN
WRITE(ILUOUT,FMT=*) 'YOU CHOSE A TEMPERATURE AND HUMIDITY RELAXATION'
WRITE(ILUOUT,FMT=*) 'TOGETHER WITH TENDENCY OR GEOSTROPHIC FORCING'
WRITE(ILUOUT,FMT=*) &
- 'YOU MIGHT CHECK YOUR SWITCHES: LRELAX_THRV_FRC, LTEND_THRV_FRC, AND'
+ 'YOU MIGHT CHECK YOUR SWITCHES: LRELAX_THRV_FRC, LTEND_THRV_FRC, AND'
WRITE(ILUOUT,FMT=*) 'LGEOST_TH_FRC'
END IF
!
- IF ( LRELAX_UV_FRC .AND. LGEOST_UV_FRC ) THEN
+ IF ( LRELAX_UV_FRC .AND. LRELAX_UVMEAN_FRC) THEN
+ WRITE(UNIT=ILUOUT,FMT=9003) KMI
+ WRITE(ILUOUT,FMT=*) 'YOU MUST CHOOSE BETWEEN A RELAXATION APPLIED TO'
+ WRITE(ILUOUT,FMT=*) 'THE 3D FULL WIND FIELD (LRELAX_UV_FRC) OR'
+ WRITE(ILUOUT,FMT=*) 'THE HORIZONTAL MEAN WIND (LRELAX_UVMEAN_FRC)'
+ !callabortstop
+ CALL PRINT_MSG(NVERB_FATAL,'GEN','READ_EXSEG_n','')
+ END IF
+!
+ IF ( (LRELAX_UV_FRC .OR. LRELAX_UVMEAN_FRC) .AND. LGEOST_UV_FRC ) THEN
WRITE(UNIT=ILUOUT,FMT=9003) KMI
WRITE(ILUOUT,FMT=*) 'YOU MUST NOT USE A WIND RELAXATION'
WRITE(ILUOUT,FMT=*) 'TOGETHER WITH A GEOSTROPHIC FORCING'
- WRITE(ILUOUT,FMT=*) 'CHECK SWITCHES: LRELAX_UV_FRC, LGEOST_UV_FRC'
+ WRITE(ILUOUT,FMT=*) 'CHECK SWITCHES: LRELAX_UV_FRC, LRELAX_UVMEAN_FRC, LGEOST_UV_FRC'
!callabortstop
CALL PRINT_MSG(NVERB_FATAL,'GEN','READ_EXSEG_n','')
END IF