source: dynamico_lmdz/guided/Experiments/LOWRES_DCMIP41/icosa.xml

<context id="icosagcm" >
  <calendar type="d360" start_date="2000-01-01 00:00:00" time_origin="2000-01-01 00:00:00"/>
  
  <field_definition src="./field_def.xml" />

  <file_definition src="./filedef_dcmip2016.xml" /> 

  <file_definition type="one_file" par_access="collective">

    <file id="output" name="output" enabled=".FALSE."  output_freq="2h" sync_freq="2h" output_level="10" >
      <field_group group_ref="standard_output"/>
    </file>

    <file id="restart" name="restart" enabled="true">
       <field_group id="group_restart" operation="once"> 
          <field id="it_restart" name="iteration"  grid_ref="scalar" />
          <field id="q_restart" name="q"  grid_ref="grid_q" />
          <field_group domain_ref="i"> 
             <field id="ps_restart" name="ps" />
             <field id="phis_restart" name="phis" />
             <field_group axis_ref="lev" >
                <field id="theta_rhodz_restart" name="theta_rhodz" />
                <field id="u_restart" name="u" domain_ref="u"/>
                <field id="ulon_restart" name="ulon" />
                <field id="ulat_restart" name="ulat" />
             </field_group>
             <field_group axis_ref="levp1" >
                <field id="W_restart" name="W" />
                <field id="geopot_restart" name="geopot" />
             </field_group>
          </field_group>
       </field_group>
    </file>

    <file id="start" name="start" enabled="false" mode="read">
       <field_group id="group_start" operation="once"> 
          <field id="it_start" name="iteration"  grid_ref="scalar" enabled="false"/>
          <field id="q_start" name="q"  grid_ref="grid_q_read" />
          <field_group domain_ref="i"> 
             <field id="ps_start" name="ps" />
             <field id="phis_start" name="phis" />
             <field_group axis_ref="lev_read" >
                <field id="theta_rhodz_start" name="theta_rhodz" />
                <field id="u_start" name="u" domain_ref="u"/>
                <field id="ulon_start" name="ulon" />
                <field id="ulat_start" name="ulat" />
             </field_group>
             <field_group axis_ref="levp1" >
                <field id="W_start" name="W" />
                <field id="geopot_start" name="geopot" />
             </field_group>
          </field_group>
       </field_group>
    </file>

    
  </file_definition>
    
  <axis_definition>
    <axis id="lev" name="lev" positive="down" standard_name="atmopshere_hybrid_sigma_pressure_coordinate" long_name="hybrid level at midpoints" />
    <axis id="lev_read" />
    <axis id="levp1" name="ilev"  unit="level" positive="down" standard_name="atmopshere_hybride_sigma_pressure_coordinate" long_name="hybrid level at interface" />
    <axis id="lev_pressure" positive="down"  n_glo="2" unit="Pa" value="(0,1)[85000 50000]" >
      <interpolate_axis order="1" coordinate="p" />
    </axis>    
    <axis id="nq" name="nq" n_glo="5" value="(0,4)[1 2 3 4 5]"/>
    <axis id="presnivs_mb" > 
      <interpolate_axis order="1" /> 
    </axis>
  </axis_definition>    
  
  <domain_definition>
    
     <domain_group id="i"> 
       <domain id="i" name="mesh"/>     
     </domain_group> 
     
     
     <domain id="v" />
     <domain id="u" />
     
     <domain id="regular_half_degree" type="rectilinear" ni_glo="720" nj_glo="360" >
       <generate_rectilinear_domain />
       <interpolate_domain order="1"/>
     </domain> 
     
     <domain id="regular_one_degree" type="rectilinear" ni_glo="360" nj_glo="180" >
       <generate_rectilinear_domain />
       <interpolate_domain order="1"/>
     </domain> 
     
     <domain id="regular_two_degree" type="rectilinear" ni_glo="180" nj_glo="90" >
       <generate_rectilinear_domain />
       <interpolate_domain order="1"/>
     </domain> 
     
  </domain_definition>    
  
  <grid_definition>    
    <grid id="scalar">
      <scalar />
    </grid>
    
    <grid id="grid_q">
      <domain domain_ref="i" />
      <axis axis_ref="lev" />
      <axis axis_ref="nq" />
    </grid >

    <grid id="grid_q_read">
      <domain domain_ref="i" />
      <axis axis_ref="lev_read" />
      <axis axis_ref="nq" />
    </grid >
 
    <grid id="grid_q_regular">
      <domain domain_ref="regular_two_degree" />
      <axis axis_ref="lev" />
      <axis axis_ref="nq" />
    </grid >
  </grid_definition>   
  
</context>