Index: branches/NERC/dev_r5518_GO6_CO2_cmip/NEMOGCM/CONFIG/SHARED/field_def_bgc.xml
===================================================================
--- branches/NERC/dev_r5518_GO6_CO2_cmip/NEMOGCM/CONFIG/SHARED/field_def_bgc.xml	(revision 9298)
+++ branches/NERC/dev_r5518_GO6_CO2_cmip/NEMOGCM/CONFIG/SHARED/field_def_bgc.xml	(revision 9311)
@@ -86,40 +86,53 @@
        <field id="PHN_E3T"  long_name="PHN * E3T"                                         unit="mmol-N/m2"  > PHN * e3t </field >
        <field id="PHN_INV"  field_ref="PHN_E3T"                                           unit="mmol-N/m2"   grid_ref="vert_sum" />
+       <field id="SURF_PHN" field_ref="PHN"                                               unit="mg Chl/m3"   grid_ref="grid_T_surface_extract" />
        <field id="PHD"      long_name="diatom     phytoplankton"                          unit="mmol-N/m3" />
        <field id="PHD_E3T"  long_name="PHD * E3T"                                         unit="mmol-N/m2"  > PHD * e3t </field >
        <field id="PHD_INV"  field_ref="PHD_E3T"                                           unit="mmol-N/m2"   grid_ref="vert_sum" />
+       <field id="SURF_PHD" field_ref="PHD"                                               unit="mg Chl/m3"   grid_ref="grid_T_surface_extract" />
        <field id="ZMI"      long_name="micro zooplankton"                                 unit="mmol-N/m3" />
        <field id="ZMI_E3T"  long_name="ZMI * E3T"                                         unit="mmol-N/m2"  > ZMI * e3t </field >
        <field id="ZMI_INV"  field_ref="ZMI_E3T"                                           unit="mmol-N/m2"   grid_ref="vert_sum" />
+       <field id="SURF_ZMI" field_ref="ZMI"                                               unit="mg Chl/m3"   grid_ref="grid_T_surface_extract" />
        <field id="ZME"      long_name="meso  zooplankton"                                 unit="mmol-N/m3" />
        <field id="ZME_E3T"  long_name="ZME * E3T"                                         unit="mmol-N/m2"  > ZME * e3t </field >
        <field id="ZME_INV"  field_ref="ZME_E3T"                                           unit="mmol-N/m2"   grid_ref="vert_sum" />
+       <field id="SURF_ZME" field_ref="ZME"                                               unit="mg Chl/m3"   grid_ref="grid_T_surface_extract" />
        <field id="DIN"      long_name="dissolved inorganic nitrogen"                      unit="mmol-N/m3" />
        <field id="DIN_E3T"  long_name="DIN * E3T"                                         unit="mmol-N/m2"  > DIN * e3t </field >
        <field id="DIN_INV"  field_ref="DIN_E3T"                                           unit="mmol-N/m2"   grid_ref="vert_sum" />
+       <field id="SURF_DIN" field_ref="DIN"                                               unit="mg Chl/m3"   grid_ref="grid_T_surface_extract" />
        <field id="SIL"      long_name="dissolved silicic acid"                            unit="mmolSi/m3" />
        <field id="SIL_E3T"  long_name="SIL * E3T"                                         unit="mmolSi/m2"  > SIL * e3t </field >
        <field id="SIL_INV"  field_ref="SIL_E3T"                                           unit="mmolSi/m2"   grid_ref="vert_sum" />
+       <field id="SURF_SIL" field_ref="SIL"                                               unit="mg Chl/m3"   grid_ref="grid_T_surface_extract" />
        <field id="FER"      long_name="dissolved iron"                                    unit="mmolFe/m3" />
        <field id="FER_E3T"  long_name="FER * E3T"                                         unit="mmolFe/m2"  > FER * e3t </field >
        <field id="FER_INV"  field_ref="FER_E3T"                                           unit="mmolFe/m2"   grid_ref="vert_sum" />
+       <field id="SURF_FER" field_ref="FER"                                               unit="mg Chl/m3"   grid_ref="grid_T_surface_extract" />
        <field id="DET"      long_name="detrital nitrogen"                                 unit="mmol-N/m3" />
        <field id="DET_E3T"  long_name="DET * E3T"                                         unit="mmol-N/m2"  > DET * e3t </field >
        <field id="DET_INV"  field_ref="DET_E3T"                                           unit="mmol-N/m2"   grid_ref="vert_sum" />
+       <field id="SURF_DET" field_ref="DET"                                               unit="mg Chl/m3"   grid_ref="grid_T_surface_extract" />
        <field id="PDS"      long_name="biogenic silicon in diatom phytoplankton"          unit="mmolSi/m3" />
        <field id="PDS_E3T"  long_name="PDS * E3T"                                         unit="mmolSi/m2"  > PDS * e3t </field >
        <field id="PDS_INV"  field_ref="PDS_E3T"                                           unit="mmolSi/m2"   grid_ref="vert_sum" />
+       <field id="SURF_PDS" field_ref="PDS"                                               unit="mg Chl/m3"   grid_ref="grid_T_surface_extract" />
        <field id="DTC"      long_name="detrital carbon"                                   unit="mmol-C/m3" />
        <field id="DTC_E3T"  long_name="DTC * E3T"                                         unit="mmol-C/m2"  > DTC * e3t </field >
        <field id="DTC_INV"  field_ref="DTC_E3T"                                           unit="mmol-C/m2"   grid_ref="vert_sum" />
+       <field id="SURF_DTC" field_ref="DTC"                                               unit="mg Chl/m3"   grid_ref="grid_T_surface_extract" />
        <field id="DiC"      long_name="dissolved inorganic carbon"                        unit="mmol-C/m3" />
        <field id="DiC_E3T"  long_name="DiC * E3T"                                         unit="mmol-C/m2"  > DiC * e3t </field >
        <field id="DiC_INV"  field_ref="DiC_E3T"                                           unit="mmol-C/m2"   grid_ref="vert_sum" />
+       <field id="SURF_DiC" field_ref="DiC"                                               unit="mg Chl/m3"   grid_ref="grid_T_surface_extract" />
        <field id="ALK"      long_name="alkalinity"                                        unit="meq/m3"    />
        <field id="ALK_E3T"  long_name="ALK * E3T"                                         unit="meq/m2"     > ALK * e3t </field >
        <field id="ALK_INV"  field_ref="ALK_E3T"                                           unit="meq/m2"      grid_ref="vert_sum" />
+       <field id="SURF_ALK" field_ref="ALK"                                               unit="mg Chl/m3"   grid_ref="grid_T_surface_extract" />
        <field id="OXY"      long_name="dissolved oxygen"                                  unit="mmolO2/m3" />
        <field id="OXY_E3T"  long_name="OXY * E3T"                                         unit="mmolO2/m2"  > OXY * e3t </field >
        <field id="OXY_INV"  field_ref="OXY_E3T"                                           unit="mmolO2/m2"   grid_ref="vert_sum" />
+       <field id="SURF_OXY" field_ref="OXY"                                               unit="mg Chl/m3"   grid_ref="grid_T_surface_extract" />
 
       <!-- Ideal traceurs : variables available with key_idtra -->
@@ -1646,8 +1659,6 @@
       <field field_ref="CHN"      name="CHN"      />
       <field field_ref="CHN_E3T"  name="CHN_E3T"      />
-      <field field_ref="SURF_CHN" name="SURF_CHN"  />
       <field field_ref="CHD"      name="CHD"      />
       <field field_ref="CHD_E3T"  name="CHD_E3T"      />
-      <field field_ref="SURF_CHD" name="SURF_CHD"  />
       <field field_ref="PHN"      name="PHN"      />
       <field field_ref="PHN_E3T"  name="PHN_E3T"      />
@@ -1676,6 +1687,23 @@
       <field field_ref="OXY"      name="OXY"      />
       <field field_ref="OXY_E3T"  name="OXY_E3T"      />
-      </field_group>
-
+   </field_group>
+
+    <field_group id="groupMEDUSA_surf" >
+      <field field_ref="SURF_CHN" name="SURF_CHN"  />
+      <field field_ref="SURF_CHD" name="SURF_CHD"  />
+      <field field_ref="SURF_PHN" name="SURF_PHN"  />
+      <field field_ref="SURF_PHD" name="SURF_PHD"  />
+      <field field_ref="SURF_ZMI" name="SURF_ZMI"  />
+      <field field_ref="SURF_ZME" name="SURF_ZME"  />
+      <field field_ref="SURF_DIN" name="SURF_DIN"  />
+      <field field_ref="SURF_SIL" name="SURF_SIL"  />
+      <field field_ref="SURF_FER" name="SURF_FER"  />
+      <field field_ref="SURF_DET" name="SURF_DET"  />
+      <field field_ref="SURF_PDS" name="SURF_PDS"  />
+      <field field_ref="SURF_DTC" name="SURF_DTC"  />
+      <field field_ref="SURF_DiC" name="SURF_DiC"  />
+      <field field_ref="SURF_ALK" name="SURF_ALK"  />
+      <field field_ref="SURF_OXY" name="SURF_OXY"  />
+    </field_group>
 
     <field_group id="groupMEDUSA_INV" >
@@ -1730,5 +1758,5 @@
 
 
-    <field_group id="trendMEDUSA" >
+    <field_group id="trendMEDUSA_long" >
        <!-- trd case: jptra_xad -->
        <field field_ref="XAD_CHN"     name="XAD_CHN"   />
@@ -1781,33 +1809,18 @@
        <!-- trd case: jptra_totad -->
        <field field_ref="TAD_CHN"      name="TAD_CHN"   />
-       <field field_ref="TAD_CHN_INV"  name="TAD_CHN_INV"   />
        <field field_ref="TAD_CHD"      name="TAD_CHD"   />
-       <field field_ref="TAD_CHD_INV"  name="TAD_CHD_INV"   />
        <field field_ref="TAD_PHN"      name="TAD_PHN"   />
-       <field field_ref="TAD_PHN_INV"  name="TAD_PHN_INV"   />
        <field field_ref="TAD_PHD"      name="TAD_PHD"   />
-       <field field_ref="TAD_PHD_INV"  name="TAD_PHD_INV"   />
        <field field_ref="TAD_ZMI"      name="TAD_ZMI"   />
-       <field field_ref="TAD_ZMI_INV"  name="TAD_ZMI_INV"   />
        <field field_ref="TAD_ZME"      name="TAD_ZME"   />
-       <field field_ref="TAD_ZME_INV"  name="TAD_ZME_INV"   />
        <field field_ref="TAD_DIN"      name="TAD_DIN"   />
-       <field field_ref="TAD_DIN_INV"  name="TAD_DIN_INV"   />
        <field field_ref="TAD_SIL"      name="TAD_SIL"   />
-       <field field_ref="TAD_SIL_INV"  name="TAD_SIL_INV"   />
        <field field_ref="TAD_FER"      name="TAD_FER"   />
-       <field field_ref="TAD_FER_INV"  name="TAD_FER_INV"   />
        <field field_ref="TAD_DET"      name="TAD_DET"   />
-       <field field_ref="TAD_DET_INV"  name="TAD_DET_INV"   />
        <field field_ref="TAD_PDS"      name="TAD_PDS"   />
-       <field field_ref="TAD_PDS_INV"  name="TAD_PDS_INV"   />
        <field field_ref="TAD_DTC"      name="TAD_DTC"   />
-       <field field_ref="TAD_DTC_INV"  name="TAD_DTC_INV"   />
        <field field_ref="TAD_DiC"      name="TAD_DiC"   />
-       <field field_ref="TAD_DiC_INV"  name="TAD_DiC_INV"   />
        <field field_ref="TAD_ALK"      name="TAD_ALK"   />
-       <field field_ref="TAD_ALK_INV"  name="TAD_ALK_INV"   />
        <field field_ref="TAD_OXY"      name="TAD_OXY"   />
-       <field field_ref="TAD_OXY_INV"  name="TAD_OXY_INV"   />
        <!-- trd case: jptra_ldf -->
        <field field_ref="LDF_CHN"      name="LDF_CHN"   />
@@ -1909,33 +1922,18 @@
        <!-- trd case: jptra_sms -->
        <field field_ref="SMS_CHN"      name="SMS_CHN"   />
-       <field field_ref="SMS_CHN_INV"  name="SMS_CHN_INV"   />
        <field field_ref="SMS_CHD"      name="SMS_CHD"   />
-       <field field_ref="SMS_CHD_INV"  name="SMS_CHD_INV"   />
        <field field_ref="SMS_PHN"      name="SMS_PHN"   />
-       <field field_ref="SMS_PHN_INV"  name="SMS_PHN_INV"   />
        <field field_ref="SMS_PHD"      name="SMS_PHD"   />
-       <field field_ref="SMS_PHD_INV"  name="SMS_PHD_INV"   />
        <field field_ref="SMS_ZMI"      name="SMS_ZMI"   />
-       <field field_ref="SMS_ZMI_INV"  name="SMS_ZMI_INV"   />
        <field field_ref="SMS_ZME"      name="SMS_ZME"   />
-       <field field_ref="SMS_ZME_INV"  name="SMS_ZME_INV"   />
        <field field_ref="SMS_DIN"      name="SMS_DIN"   />
-       <field field_ref="SMS_DIN_INV"  name="SMS_DIN_INV"   />
        <field field_ref="SMS_SIL"      name="SMS_SIL"   />
-       <field field_ref="SMS_SIL_INV"  name="SMS_SIL_INV"   />
        <field field_ref="SMS_FER"      name="SMS_FER"   />
-       <field field_ref="SMS_FER_INV"  name="SMS_FER_INV"   />
        <field field_ref="SMS_DET"      name="SMS_DET"   />
-       <field field_ref="SMS_DET_INV"  name="SMS_DET_INV"   />
        <field field_ref="SMS_PDS"      name="SMS_PDS"   />
-       <field field_ref="SMS_PDS_INV"  name="SMS_PDS_INV"   />
        <field field_ref="SMS_DTC"      name="SMS_DTC"   />
-       <field field_ref="SMS_DTC_INV"  name="SMS_DTC_INV"   />
        <field field_ref="SMS_DiC"      name="SMS_DiC"   /> 
-       <field field_ref="SMS_DiC_INV"  name="SMS_DiC_INV"   />
        <field field_ref="SMS_ALK"      name="SMS_ALK"   />
-       <field field_ref="SMS_ALK_INV"  name="SMS_ALK_INV"   />
        <field field_ref="SMS_OXY"      name="SMS_OXY"   />
-       <field field_ref="SMS_OXY_INV"  name="SMS_OXY_INV"   />
        <!-- trd case: jptra_atf -->
        <field field_ref="ATF_CHN"      name="ATF_CHN"   />
@@ -1956,33 +1954,18 @@
        <!-- trd case: jptra_tot -->   
        <field field_ref="TOT_CHN"      name="TOT_CHN"   />
-       <field field_ref="TOT_CHN_INV"  name="TOT_CHN_INV"   />
        <field field_ref="TOT_CHD"      name="TOT_CHD"   />
-       <field field_ref="TOT_CHD_INV"  name="TOT_CHD_INV"   />
        <field field_ref="TOT_PHN"      name="TOT_PHN"   />
-       <field field_ref="TOT_PHN_INV"  name="TOT_PHN_INV"   />
        <field field_ref="TOT_PHD"      name="TOT_PHD"   />
-       <field field_ref="TOT_PHD_INV"  name="TOT_PHD_INV"   />
        <field field_ref="TOT_ZMI"      name="TOT_ZMI"   />
-       <field field_ref="TOT_ZMI_INV"  name="TOT_ZMI_INV"   />
        <field field_ref="TOT_ZME"      name="TOT_ZME"   />
-       <field field_ref="TOT_ZME_INV"  name="TOT_ZME_INV"   />
        <field field_ref="TOT_DIN"      name="TOT_DIN"   />
-       <field field_ref="TOT_DIN_INV"  name="TOT_DIN_INV"   />
        <field field_ref="TOT_SIL"      name="TOT_SIL"   />
-       <field field_ref="TOT_SIL_INV"  name="TOT_SIL_INV"   />
        <field field_ref="TOT_FER"      name="TOT_FER"   />
-       <field field_ref="TOT_FER_INV"  name="TOT_FER_INV"   />
        <field field_ref="TOT_DET"      name="TOT_DET"   />
-       <field field_ref="TOT_DET_INV"  name="TOT_DET_INV"   />
        <field field_ref="TOT_PDS"      name="TOT_PDS"   />
-       <field field_ref="TOT_PDS_INV"  name="TOT_PDS_INV"   />
        <field field_ref="TOT_DTC"      name="TOT_DTC"   />
-       <field field_ref="TOT_DTC_INV"  name="TOT_DTC_INV"   />
        <field field_ref="TOT_DiC"      name="TOT_DiC"   />
-       <field field_ref="TOT_DiC_INV"  name="TOT_DiC_INV"   />
        <field field_ref="TOT_ALK"      name="TOT_ALK"   />   
-       <field field_ref="TOT_ALK_INV"  name="TOT_ALK_INV"   />
        <field field_ref="TOT_OXY"      name="TOT_OXY"   />
-       <field field_ref="TOT_OXY_INV"  name="TOT_OXY_INV"   />  
        <!-- trd case: jptra_iso -->
        <field field_ref="ISO_CHN"      name="ISO_CHN"   />   
@@ -2003,13 +1986,11 @@
     </field_group>
 
-    <field_group id="trendCFC11" >
+    <field_group id="trendCFC11_long" >
           <!-- cfc11 -->
           <field field_ref="TOT_CFC11"     name="TOT_CFC11"     standard_name="CFC-11_Concentration"                  />
-          <field field_ref="TOT_CFC11_INV" name="TOT_CFC11_INV" standard_name="CFC-11_Concentration"                  />
           <field field_ref="XAD_CFC11"     name="XAD_CFC11"     standard_name="CFC-11_Concentration"                  />
           <field field_ref="YAD_CFC11"     name="YAD_CFC11"     standard_name="CFC-11_Concentration"                  />
           <field field_ref="ZAD_CFC11"     name="ZAD_CFC11"     standard_name="CFC-11_Concentration"                  />
           <field field_ref="TAD_CFC11"     name="TAD_CFC11"     standard_name="CFC-11_Concentration"                  />
-          <field field_ref="TAD_CFC11_INV" name="TAD_CFC11_INV" standard_name="CFC-11_Concentration"                  />
           <field field_ref="LDF_CFC11"     name="LDF_CFC11"     standard_name="CFC-11_Concentration"                  />
           <field field_ref="BBL_CFC11"     name="BBL_CFC11"     standard_name="CFC-11_Concentration"                  />
@@ -2019,18 +2000,15 @@
           <!-- <field field_ref="DMP_CFC11"     name="DMP_CFC11"     standard_name="CFC-11_Concentration"             /> -->
           <field field_ref="SMS_CFC11"     name="SMS_CFC11"     standard_name="CFC-11_Concentration"                  />
-          <field field_ref="SMS_CFC11_INV" name="SMS_CFC11_INV" standard_name="CFC-11_Concentration"                  />
           <field field_ref="ATF_CFC11"     name="ATF_CFC11"     standard_name="CFC-11_Concentration"                  /> 
           <field field_ref="ISO_CFC11"     name="ISO_CFC11"     standard_name="CFC-11_Concentration"                  />
    </field_group>
 
-    <field_group id="trendCFC12" >
+    <field_group id="trendCFC12_long" >
           <!-- cfc12 -->
           <field field_ref="TOT_CFC12"     name="TOT_CFC12"     standard_name="CFC-12_Concentration"                  />
-          <field field_ref="TOT_CFC12_INV" name="TOT_CFC12_INV" standard_name="CFC-12_Concentration"                  />
           <field field_ref="XAD_CFC12"     name="XAD_CFC12"     standard_name="CFC-12_Concentration"                  />
           <field field_ref="YAD_CFC12"     name="YAD_CFC12"     standard_name="CFC-12_Concentration"                  />
           <field field_ref="ZAD_CFC12"     name="ZAD_CFC12"     standard_name="CFC-12_Concentration"                  />
           <field field_ref="TAD_CFC12"     name="TAD_CFC12"     standard_name="CFC-12_Concentration"                  />
-          <field field_ref="TAD_CFC12_INV" name="TAD_CFC12_INV" standard_name="CFC-12_Concentration"                  />
           <field field_ref="LDF_CFC12"     name="LDF_CFC12"     standard_name="CFC-12_Concentration"                  />
           <field field_ref="BBL_CFC12"     name="BBL_CFC12"     standard_name="CFC-12_Concentration"                  />
@@ -2040,18 +2018,15 @@
           <!-- <field field_ref="DMP_CFC12"     name="DMP_CFC12"     standard_name="CFC-12_Concentration"             /> -->
           <field field_ref="SMS_CFC12"     name="SMS_CFC12"     standard_name="CFC-12_Concentration"                  />
-          <field field_ref="SMS_CFC12_INV" name="SMS_CFC12_INV" standard_name="CFC-12_Concentration"                  />
           <field field_ref="ATF_CFC12"     name="ATF_CFC12"     standard_name="CFC-12_Concentration"                  /> 
           <field field_ref="ISO_CFC12"     name="ISO_CFC12"     standard_name="CFC-12_Concentration"                  />
    </field_group>
 
-    <field_group id="trendSF6" >
+    <field_group id="trendSF6_long" >
           <!-- sf6 -->
           <field field_ref="TOT_SF6"      name="TOT_SF6"      standard_name="SF6_Concentration"                     />
-          <field field_ref="TOT_SF6_INV"  name="TOT_SF6_INV"  standard_name="SF6_Concentration"                     />
           <field field_ref="XAD_SF6"      name="XAD_SF6"      standard_name="SF6_Concentration"                     />
           <field field_ref="YAD_SF6"      name="YAD_SF6"      standard_name="SF6_Concentration"                     />
           <field field_ref="ZAD_SF6"      name="ZAD_SF6"      standard_name="SF6_Concentration"                     />
           <field field_ref="TAD_SF6"      name="TAD_SF6"      standard_name="SF6_Concentration"                     />
-          <field field_ref="TAD_SF6_INV"  name="TAD_SF6_INV"  standard_name="SF6_Concentration"                     />
           <field field_ref="LDF_SF6"      name="LDF_SF6"      standard_name="SF6_Concentration"                     />
           <field field_ref="BBL_SF6"      name="BBL_SF6"      standard_name="SF6_Concentration"                     />
@@ -2061,18 +2036,15 @@
           <!-- <field field_ref="DMP_SF6"      name="DMP_SF6"      standard_name="SF6_Concentration"                /> -->
           <field field_ref="SMS_SF6"      name="SMS_SF6"      standard_name="SF6_Concentration"                     />
-          <field field_ref="SMS_SF6_INV"  name="SMS_SF6_INV"  standard_name="SF6_Concentration"                     />
           <field field_ref="ATF_SF6"      name="ATF_SF6"      standard_name="SF6_Concentration"                     /> 
           <field field_ref="ISO_SF6"      name="ISO_SF6"      standard_name="SF6_Concentration"                     />
    </field_group>
 
-    <field_group id="trendAGE" >
+    <field_group id="trendAGE_long" >
           <!-- age -->
           <field field_ref="TOT_Age"      name="TOT_Age"      standard_name="sea_water_age_since_surface_contact"   />
-          <field field_ref="TOT_Age_INV"  name="TOT_Age_INV"  standard_name="sea_water_age_since_surface_contact"   />
           <field field_ref="XAD_Age"      name="XAD_Age"      standard_name="sea_water_age_since_surface_contact"   />
           <field field_ref="YAD_Age"      name="YAD_Age"      standard_name="sea_water_age_since_surface_contact"   />
           <field field_ref="ZAD_Age"      name="ZAD_Age"      standard_name="sea_water_age_since_surface_contact"   />
           <field field_ref="TAD_Age"      name="TAD_Age"      standard_name="sea_water_age_since_surface_contact"   />
-          <field field_ref="TAD_Age_INV"  name="TAD_Age_INV"  standard_name="sea_water_age_since_surface_contact"   />
           <field field_ref="LDF_Age"      name="LDF_Age"      standard_name="sea_water_age_since_surface_contact"   />
           <field field_ref="BBL_Age"      name="BBL_Age"      standard_name="sea_water_age_since_surface_contact"   />
@@ -2082,18 +2054,15 @@
           <!-- <field field_ref="DMP_Age"      name="DMP_Age"      standard_name="sea_water_age_since_surface_contact" /> -->
           <field field_ref="SMS_Age"      name="SMS_Age"      standard_name="sea_water_age_since_surface_contact"   />
-          <field field_ref="SMS_Age_INV"  name="SMS_Age_INV"  standard_name="sea_water_age_since_surface_contact"   />
           <field field_ref="ATF_Age"      name="ATF_Age"      standard_name="sea_water_age_since_surface_contact"   /> 
           <field field_ref="ISO_Age"      name="ISO_Age"      standard_name="sea_water_age_since_surface_contact"   />
    </field_group>
 
-    <field_group id="trendIDTRA" >
+    <field_group id="trendIDTRA_long" >
           <!-- Ideal tracer -->
           <field field_ref="TOT_IDTRA"      name="TOT_IDTRA"      standard_name="IDTRA_Concentration"               />
-          <field field_ref="TOT_IDTRA_INV"  name="TOT_IDTRA_INV"  standard_name="IDTRA_Concentration"               />
           <field field_ref="XAD_IDTRA"      name="XAD_IDTRA"      standard_name="IDTRA_Concentration"               />
           <field field_ref="YAD_IDTRA"      name="YAD_IDTRA"      standard_name="IDTRA_Concentration"               />
           <field field_ref="ZAD_IDTRA"      name="ZAD_IDTRA"      standard_name="IDTRA_Concentration"               />
           <field field_ref="TAD_IDTRA"      name="TAD_IDTRA"      standard_name="IDTRA_Concentration"               />
-          <field field_ref="TAD_IDTRA_INV"  name="TAD_IDTRA_INV"  standard_name="IDTRA_Concentration"               />
           <field field_ref="LDF_IDTRA"      name="LDF_IDTRA"      standard_name="IDTRA_Concentration"               />
           <field field_ref="BBL_IDTRA"      name="BBL_IDTRA"      standard_name="IDTRA_Concentration"               />
@@ -2103,18 +2072,15 @@
           <!-- <field field_ref="DMP_IDTRA"      name="DMP_IDTRA"      standard_name="IDTRA_Concentration"          /> -->
           <field field_ref="SMS_IDTRA"      name="SMS_IDTRA"      standard_name="IDTRA_Concentration"               />
-          <field field_ref="SMS_IDTRA_INV"  name="SMS_IDTRA_INV"  standard_name="IDTRA_Concentration"               />
           <field field_ref="ATF_IDTRA"      name="ATF_IDTRA"      standard_name="IDTRA_Concentration"               /> 
           <field field_ref="ISO_IDTRA"      name="ISO_IDTRA"      standard_name="IDTRA_Concentration"               />
    </field_group>
 
-    <field_group id="trendC14B" >
+    <field_group id="trendC14B_long" >
           <!-- c14 bomb -->
           <field field_ref="TOT_C14B"      name="TOT_C14B"      standard_name="C14b_Concentration"               />
-          <field field_ref="TOT_C14B_INV"  name="TOT_C14B_INV"  standard_name="C14b_Concentration"               />
           <field field_ref="XAD_C14B"      name="XAD_C14B"      standard_name="C14b_Concentration"               />
           <field field_ref="YAD_C14B"      name="YAD_C14B"      standard_name="C14b_Concentration"               />
           <field field_ref="ZAD_C14B"      name="ZAD_C14B"      standard_name="C14b_Concentration"               />
           <field field_ref="TAD_C14B"      name="TAD_C14B"      standard_name="C14b_Concentration"               />
-          <field field_ref="TAD_C14B_INV"  name="TAD_C14B_INV"  standard_name="C14b_Concentration"               />
           <field field_ref="LDF_C14B"      name="LDF_C14B"      standard_name="C14b_Concentration"               />
           <field field_ref="BBL_C14B"      name="BBL_C14B"      standard_name="C14b_Concentration"               />
@@ -2124,5 +2090,4 @@
           <!-- <field field_ref="DMP_C14B"      name="DMP_C14B"      standard_name="C14b_Concentration"          /> -->
           <field field_ref="SMS_C14B"      name="SMS_C14B"      standard_name="C14b_Concentration"               />
-          <field field_ref="SMS_C14B_INV"  name="SMS_C14B_INV"  standard_name="C14b_Concentration"               />
           <field field_ref="ATF_C14B"      name="ATF_C14B"      standard_name="C14b_Concentration"               /> 
           <field field_ref="ISO_C14B"      name="ISO_C14B"      standard_name="C14b_Concentration"               />
@@ -2161,49 +2126,73 @@
 
 
-    <field_group id="trendCFC11_short" >
+    <field_group id="trendCFC11_cmip6" >
           <!-- cfc11 -->
           <field field_ref="TOT_CFC11_E3T" name="TOT_CFC11_E3T" standard_name="CFC-11_Concentration"                  />
+          <field field_ref="SMS_CFC11_E3T" name="SMS_CFC11_E3T" standard_name="CFC-11_Concentration"                  />
+   </field_group>
+
+    <field_group id="trendCFC12_cmip6" >
+          <!-- cfc12 -->
+          <field field_ref="TOT_CFC12_E3T" name="TOT_CFC12_E3T" standard_name="CFC-12_Concentration"                  />
+          <field field_ref="SMS_CFC12_E3T" name="SMS_CFC12_E3T" standard_name="CFC-12_Concentration"                  />
+   </field_group>
+
+    <field_group id="trendSF6_cmip6" >
+          <!-- sf6 -->
+          <field field_ref="TOT_SF6_E3T"  name="TOT_SF6_E3T"  standard_name="SF6_Concentration"                     />
+          <field field_ref="SMS_SF6_E3T"  name="SMS_SF6_E3T"  standard_name="SF6_Concentration"                     />
+   </field_group>
+
+    <field_group id="trendAGE_cmip6" >
+          <!-- age -->
+          <field field_ref="TOT_Age_E3T"  name="TOT_Age_E3T"  standard_name="sea_water_age_since_surface_contact"   />
+          <field field_ref="SMS_Age_E3T"  name="SMS_Age_E3T"  standard_name="sea_water_age_since_surface_contact"   />
+   </field_group>
+
+    <field_group id="trendIDTRA_cmip6" >
+          <!-- Ideal tracer -->
+          <field field_ref="TOT_IDTRA_E3T"  name="TOT_IDTRA_E3T"  standard_name="IDTRA_Concentration"               />
+          <field field_ref="SMS_IDTRA_E3T"  name="SMS_IDTRA_E3T"  standard_name="IDTRA_Concentration"               />
+   </field_group>
+
+    <field_group id="trendC14B_cmip6" >
+          <!-- c14 bomb -->
+          <field field_ref="TOT_C14B_E3T"  name="TOT_C14B_E3T"  standard_name="C14b_Concentration"               />
+          <field field_ref="SMS_C14B_E3T"  name="SMS_C14B_E3T"  standard_name="C14b_Concentration"               />
+   </field_group>
+
+    <field_group id="trendCFC11_cmip6_inv" >
+          <!-- cfc11 -->
           <field field_ref="TOT_CFC11_INV" name="TOT_CFC11_INV" standard_name="CFC-11_Concentration"                  />
-          <field field_ref="SMS_CFC11_E3T" name="SMS_CFC11_E3T" standard_name="CFC-11_Concentration"                  />
           <field field_ref="SMS_CFC11_INV" name="SMS_CFC11_INV" standard_name="CFC-11_Concentration"                  />
    </field_group>
 
-    <field_group id="trendCFC12_short" >
+    <field_group id="trendCFC12_cmip6_inv" >
           <!-- cfc12 -->
-          <field field_ref="TOT_CFC12_E3T" name="TOT_CFC12_E3T" standard_name="CFC-12_Concentration"                  />
           <field field_ref="TOT_CFC12_INV" name="TOT_CFC12_INV" standard_name="CFC-12_Concentration"                  />
-          <field field_ref="SMS_CFC12_E3T" name="SMS_CFC12_E3T" standard_name="CFC-12_Concentration"                  />
           <field field_ref="SMS_CFC12_INV" name="SMS_CFC12_INV" standard_name="CFC-12_Concentration"                  />
    </field_group>
 
-    <field_group id="trendSF6_short" >
+    <field_group id="trendSF6_cmip6_inv" >
           <!-- sf6 -->
-          <field field_ref="TOT_SF6_E3T"  name="TOT_SF6_E3T"  standard_name="SF6_Concentration"                     />
           <field field_ref="TOT_SF6_INV"  name="TOT_SF6_INV"  standard_name="SF6_Concentration"                     />
-          <field field_ref="SMS_SF6_E3T"  name="SMS_SF6_E3T"  standard_name="SF6_Concentration"                     />
           <field field_ref="SMS_SF6_INV"  name="SMS_SF6_INV"  standard_name="SF6_Concentration"                     />
    </field_group>
 
-    <field_group id="trendAGE_short" >
+    <field_group id="trendAGE_cmip6_inv" >
           <!-- age -->
-          <field field_ref="TOT_Age_E3T"  name="TOT_Age_E3T"  standard_name="sea_water_age_since_surface_contact"   />
           <field field_ref="TOT_Age_INV"  name="TOT_Age_INV"  standard_name="sea_water_age_since_surface_contact"   />
-          <field field_ref="SMS_Age_E3T"  name="SMS_Age_E3T"  standard_name="sea_water_age_since_surface_contact"   />
           <field field_ref="SMS_Age_INV"  name="SMS_Age_INV"  standard_name="sea_water_age_since_surface_contact"   />
    </field_group>
 
-    <field_group id="trendIDTRA_short" >
+    <field_group id="trendIDTRA_cmip6_inv" >
           <!-- Ideal tracer -->
-          <field field_ref="TOT_IDTRA_E3T"  name="TOT_IDTRA_E3T"  standard_name="IDTRA_Concentration"               />
           <field field_ref="TOT_IDTRA_INV"  name="TOT_IDTRA_INV"  standard_name="IDTRA_Concentration"               />
-          <field field_ref="SMS_IDTRA_E3T"  name="SMS_IDTRA_E3T"  standard_name="IDTRA_Concentration"               />
           <field field_ref="SMS_IDTRA_INV"  name="SMS_IDTRA_INV"  standard_name="IDTRA_Concentration"               />
    </field_group>
 
-    <field_group id="trendC14B_short" >
+    <field_group id="trendC14B_cmip6_inv" >
           <!-- c14 bomb -->
-          <field field_ref="TOT_C14B_E3T"  name="TOT_C14B_E3T"  standard_name="C14b_Concentration"               />
           <field field_ref="TOT_C14B_INV"  name="TOT_C14B_INV"  standard_name="C14b_Concentration"               />
-          <field field_ref="SMS_C14B_E3T"  name="SMS_C14B_E3T"  standard_name="C14b_Concentration"               />
           <field field_ref="SMS_C14B_INV"  name="SMS_C14B_INV"  standard_name="C14b_Concentration"               />
    </field_group>
@@ -2421,4 +2410,17 @@
     </field_group>
 
+    <field_group id="groupMEDUSA_cmip6_duplicates" >
+      <field field_ref= "FBDDTALK"   name="FBDDTALK"   />
+      <field field_ref= "FBDDTDIC"   name="FBDDTDIC"   />
+      <field field_ref= "FBDDTDIFE"  name="FBDDTDIFE"  />
+      <field field_ref= "FBDDTDIN"   name="FBDDTDIN"   />
+      <field field_ref= "FBDDTDISI"  name="FBDDTDISI"  />
+      <field field_ref= "BDDTALK3"   name="BDDTALK3"   />
+      <field field_ref= "BDDTDIC3"   name="BDDTDIC3"   />
+      <field field_ref= "BDDTDIFE3"  name="BDDTDIFE3"  />
+      <field field_ref= "BDDTDIN3"   name="BDDTDIN3"   />
+      <field field_ref= "BDDTDISI3"  name="BDDTDISI3"  />
+    </field_group>
+
     <field_group id="groupMEDUSA_cmip6" >
       <field field_ref= "epC100"     name="epC100"     />
@@ -2432,15 +2434,5 @@
       <field field_ref= "O2min"      name="O2min"      />
       <field field_ref= "ZO2min"     name="ZO2min"     />
-      <field field_ref= "FBDDTALK"   name="FBDDTALK"   />
-      <field field_ref= "FBDDTDIC"   name="FBDDTDIC"   />
-      <field field_ref= "FBDDTDIFE"  name="FBDDTDIFE"  />
-      <field field_ref= "FBDDTDIN"   name="FBDDTDIN"   />
-      <field field_ref= "FBDDTDISI"  name="FBDDTDISI"  />
       <field field_ref= "TPPD3"      name="TPPD3"      />
-      <field field_ref= "BDDTALK3"   name="BDDTALK3"   />
-      <field field_ref= "BDDTDIC3"   name="BDDTDIC3"   />
-      <field field_ref= "BDDTDIFE3"  name="BDDTDIFE3"  />
-      <field field_ref= "BDDTDIN3"   name="BDDTDIN3"   />
-      <field field_ref= "BDDTDISI3"  name="BDDTDISI3"  />
       <field field_ref= "FD_NIT3"    name="FD_NIT3"    />
       <field field_ref= "FD_SIL3"    name="FD_SIL3"    />
