Index: /LMDZ5/trunk/DefLists/file_def_histdayNMC_lmdz.xml
===================================================================
--- /LMDZ5/trunk/DefLists/file_def_histdayNMC_lmdz.xml	(revision 2287)
+++ /LMDZ5/trunk/DefLists/file_def_histdayNMC_lmdz.xml	(revision 2288)
@@ -4,5 +4,5 @@
 
             <!-- VARS 3D -->
-            <field_group operation="instant" freq_op="1ts" >
+            <field_group operation="instant" freq_op="1ts" detect_missing_value=".true.">
 <!--            <field field_ref="tnondef" level="5" /> -->
                 <field field_ref="ta" level="1" />
Index: /LMDZ5/trunk/DefLists/file_def_histhfNMC_lmdz.xml
===================================================================
--- /LMDZ5/trunk/DefLists/file_def_histhfNMC_lmdz.xml	(revision 2287)
+++ /LMDZ5/trunk/DefLists/file_def_histhfNMC_lmdz.xml	(revision 2288)
@@ -4,5 +4,5 @@
 
             <!-- VARS 3D -->
-            <field_group operation="instant" freq_op="1ts" >
+            <field_group operation="instant" freq_op="1ts" detect_missing_value=".true." >
 <!--            <field field_ref="tnondef" level="5" />  -->
                 <field field_ref="ta" level="1" />
Index: /LMDZ5/trunk/DefLists/file_def_histmthNMC_lmdz.xml
===================================================================
--- /LMDZ5/trunk/DefLists/file_def_histmthNMC_lmdz.xml	(revision 2287)
+++ /LMDZ5/trunk/DefLists/file_def_histmthNMC_lmdz.xml	(revision 2288)
@@ -4,5 +4,5 @@
 
             <!-- VARS 3D -->
-            <field_group operation="instant" freq_op="1ts" >
+            <field_group operation="instant" freq_op="1ts" detect_missing_value=".true.">
 <!--            <field field_ref="tnondef" level="5" />  -->
                 <field field_ref="ta" level="1" />