From e366da29443ff8f52d2da15acf235f8cfd738aa4 Mon Sep 17 00:00:00 2001
From: "ukmo-juan.castillo" <juan.m.castillo@metoffice.gov.uk>
Date: Thu, 23 Jan 2025 10:58:43 +0000
Subject: [PATCH] Consistent oasis land/sea mask for SMD and regular grids,
 consistent with OASIS convention

---
 model/src/w3oacpmd.F90 | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/model/src/w3oacpmd.F90 b/model/src/w3oacpmd.F90
index fea9b08c3..f6a774593 100644
--- a/model/src/w3oacpmd.F90
+++ b/model/src/w3oacpmd.F90
@@ -314,8 +314,8 @@ SUBROUTINE CPL_OASIS_GRID(LD_MASTER,ID_LCOMM)
           CORLAT(I,1,4) = CORLAT(I,1,3)
           ! areas
           AREA(I,1) = 0.25 * IJKCEL(3,I)*DLON * IJKCEL(4,I)*DLAT
-          ! Model grid mask
-          MASK(I,1) = 1
+          ! Model grid mask: 0 - sea  / 1 - open boundary cells (the land is already excluded)
+          MASK(I,1) = 0
         ENDDO
 #endif
         !