Index: LMDZ5/trunk/libf/phylmd/phys_output_write_mod.F90
===================================================================
--- LMDZ5/trunk/libf/phylmd/phys_output_write_mod.F90	(revision 2540)
+++ LMDZ5/trunk/libf/phylmd/phys_output_write_mod.F90	(revision 2541)
@@ -1063,6 +1063,8 @@
        CALL histwrite_phy(o_zfull,zphi/RG)
 
-       CALL histwrite_phy(o_stratomask, stratomask)
-
+       IF (flag_aerosol_strat.EQ.2) THEN
+         CALL histwrite_phy(o_stratomask, stratomask)
+       ENDIF
+      
        IF (vars_defined)  THEN
         zx_tmp_fi3d(:,1)= pphis(:)/RG