Ignore:
Timestamp:
2017-05-31T11:08:52+02:00 (3 years ago)
Author:
davestorkey
Message:

NEMO 3.6_stable: tracer trends diagnostics. See ticket #1877 for more details.

  1. Correct bugs in calculation of total trends and trends due to vertical diffusion.
  2. Output component trends every second timestep so that sum of component trends plus Asselin filter trend equals total trend.
  3. Layer-integrated versions of trends (as per CMIP6 definition) available in field_def.xml.
File:
1 edited

Legend:

Unmodified
Added
Removed
  • branches/2015/nemo_v3_6_STABLE/NEMOGCM/CONFIG/SHARED/field_def.xml

    r7963 r8102  
    2323      <field_group id="grid_T" grid_ref="grid_T_2D" > 
    2424         <field id="e3t"          long_name="T-cell thickness"   standard_name="cell_thickness"   unit="m"   grid_ref="grid_T_3D"/> 
     25         <field id="e3t_surf"     long_name="T-cell thickness"   field_ref="e3t"  standard_name="cell_thickness"   unit="m"   grid_ref="grid_T_surface_extract"/> 
    2526         <field id="e3t_0"        long_name="Initial T-cell thickness"   standard_name="ref_cell_thickness"   unit="m"   grid_ref="grid_T_3D"/> 
    2627 
     
    710711    --> 
    711712 
    712     <field_group id="trendT" grid_ref="grid_T_3D"> 
    713713      <!-- variables available with ln_tra_trd --> 
    714       <field id="ttrd_xad"      long_name="temperature-trend: i-advection"                                                                                          unit="degC/s"                        /> 
     714  
     715     <!-- Asselin trends  calculated on odd time steps--> 
     716     <field_group id="trendT_odd"  grid_ref="grid_T_3D"> 
     717      <field id="ttrd_atf"      long_name="temperature-trend: asselin time filter"       unit="degree_C/s" /> 
     718      <field id="strd_atf"      long_name="salinity   -trend: asselin time filter"       unit="0.001/s" /> 
     719      <!-- Thickness weighted versions: --> 
     720      <field id="ttrd_atf_e3t"      unit="degC/s * m"  >  ttrd_atf * e3t </field> 
     721      <field id="strd_atf_e3t"      unit="1e-3/s * m"  >  strd_atf * e3t </field> 
     722      <!-- OMIP  layer-integrated trends --> 
     723      <field id="ttrd_atf_li"      long_name="layer integrated heat-trend: asselin time filter "       unit="W/m^2" > ttrd_atf_e3t * 1026.0 * 3991.86795711963  </field> 
     724      <field id="strd_atf_li"      long_name="layer integrated salt   -trend: asselin time filter "       unit="kg/(m^2 s)" > strd_atf_e3t * 1026.0 * 0.001 </field> 
     725      </field_group> 
     726 
     727    <!-- Other trends  calculated on even time steps--> 
     728  <field_group id="trendT_even" grid_ref="grid_T_3D"> 
     729       <field id="ttrd_xad"      long_name="temperature-trend: i-advection"                                                                                          unit="degC/s"                        /> 
    715730      <field id="strd_xad"      long_name="salinity   -trend: i-advection"                                                                                          unit="1e-3/s"                        /> 
    716731      <field id="ttrd_yad"      long_name="temperature-trend: j-advection"                                                                                          unit="degC/s"                        /> 
     
    756771      <field id="ttrd_qsr"      long_name="temperature-trend: solar penetr. heating"     unit="degree_C/s" /> 
    757772      <field id="ttrd_bbc"      long_name="temperature-trend: geothermal heating"        unit="degree_C/s" /> 
    758       <field id="ttrd_atf"      long_name="temperature-trend: asselin time filter"       unit="degree_C/s" /> 
    759       <field id="strd_atf"      long_name="salinity   -trend: asselin time filter"       unit="0.001/s" /> 
    760       <field id="ttrd_tot"      long_name="temperature-trend: total model trend"         unit="degC/s" /> 
    761       <field id="strd_tot"      long_name="salinity   -trend: total model trend"         unit="1e-3/s" /> 
    762  
     773  
    763774      <!-- Thickness weighted versions: --> 
    764775      <field id="ttrd_xad_e3t"      unit="degC/s * m" >  ttrd_xad * e3t </field> 
     
    779790      <field id="strd_evd_e3t"      unit="1e-3/s * m" >  strd_evd * e3t </field> 
    780791 
     792      <field id="strd_evd_e3t"      unit="1e-3/s * m" >  strd_evd * e3t </field> 
     793 
    781794      <!-- ln_traldf_iso=T only (iso-neutral diffusion) --> 
    782795      <field id="ttrd_iso_x_e3t"    unit="degC/s * m"  >  ttrd_iso_x * e3t </field> 
     
    802815      <field id="ttrd_qsr_e3t"      unit="degC/s * m"  >  ttrd_qsr * e3t </field> 
    803816      <field id="ttrd_bbc_e3t"      unit="degC/s * m"  >  ttrd_bbc * e3t </field> 
    804       <field id="ttrd_atf_e3t"      unit="degC/s * m"  >  ttrd_atf * e3t </field> 
    805       <field id="strd_atf_e3t"      unit="1e-3/s * m"  >  strd_atf * e3t </field> 
     817 
     818      <!-- OMIP  layer-integrated trends --> 
     819      <field id="ttrd_totad_li"    long_name="layer integrated heat-trend : total advection"       unit="W/m^2"     > ttrd_totad_e3t * 1026.0 * 3991.86795711963 </field> 
     820      <field id="strd_totad_li"    long_name="layer integrated salt   -trend : total advection"      unit="kg/(m^2 s)"    > strd_totad_e3t * 1026.0 * 0.001  </field> 
     821      <field id="ttrd_evd_li"      long_name="layer integrated heat-trend : EVD convection"         unit="W/m^2"    > ttrd_evd_e3t * 1026.0 * 3991.86795711963 </field> 
     822      <field id="strd_evd_li"      long_name="layer integrated salt   -trend : EVD convection"      unit="kg/(m^2 s)"  > strd_evd_e3t * 1026.0 * 0.001  </field> 
     823      <field id="ttrd_iso_li"      long_name="layer integrated heat-trend : isopycnal diffusion"    unit="W/m^2" > ttrd_iso_e3t * 1026.0 * 3991.86795711963 </field> 
     824      <field id="strd_iso_li"      long_name="layer integrated salt   -trend : isopycnal diffusion"   unit="kg/(m^2 s)" > strd_iso_e3t * 1026.0 * 0.001  </field> 
     825      <field id="ttrd_zdfp_li"     long_name="layer integrated heat-trend : pure vert. diffusion"   unit="W/m^2" > ttrd_zdfp_e3t * 1026.0 * 3991.86795711963 </field> 
     826      <field id="strd_zdfp_li"     long_name="layer integrated salt   -trend : pure vert. diffusion"   unit="kg/(m^2 s)" > strd_zdfp_e3t * 1026.0 * 0.001  </field> 
     827      <field id="ttrd_qns_li"      long_name="layer integrated heat-trend : non-solar flux + runoff"   unit="W/m^2" grid_ref="grid_T_2D"> ttrd_qns_e3t * 1026.0 * 3991.86795711963 </field> 
     828      <field id="ttrd_qsr_li"      long_name="layer integrated heat-trend : solar flux"   unit="W/m^2"  grid_ref="grid_T_3D"> ttrd_qsr_e3t * 1026.0 * 3991.86795711963 </field> 
     829      <field id="ttrd_bbl_li"      long_name="layer integrated heat-trend: bottom boundary layer "     unit="W/m^2" > ttrd_bbl_e3t * 1026.0 * 3991.86795711963 </field> 
     830      <field id="strd_bbl_li"      long_name="layer integrated salt   -trend: bottom boundary layer "     unit="kg/(m^2 s)" > strd_bbl_e3t * 1026.0 * 0.001  </field> 
     831      <field id="ttrd_evd_li"      long_name="layer integrated heat -trend: evd convection "       unit="W/m^2" >ttrd_evd_e3t * 1026.0 * 3991.86795711963  </field> 
     832      <field id="strd_evd_li"      long_name="layer integrated salt -trend: evd convection "       unit="kg/(m^2 s)" > strd_evd_e3t * 1026.0 * 0.001  </field> 
     833     </field_group> 
     834    
     835     <!--  Total trends calculated every time step--> 
     836     <field_group id="trendT" grid_ref="grid_T_3D"> 
     837      <field id="ttrd_tot"      long_name="temperature-trend: total model trend"         unit="degC/s" /> 
     838      <field id="strd_tot"      long_name="salinity   -trend: total model trend"         unit="1e-3/s" /> 
     839      <!-- Thickness weighted versions: --> 
    806840      <field id="ttrd_tot_e3t"      unit="degC/s * m"  >  ttrd_tot * e3t </field> 
    807841      <field id="strd_tot_e3t"      unit="1e-3/s * m"  >  strd_tot * e3t </field> 
    808  
     842      <!-- OMIP  layer-integrated total trends --> 
     843      <field id="ttrd_tot_li"      long_name="layer integrated heat-trend: total model trend :"         unit="W/m^2" > ttrd_tot_e3t * 1026.0 * 3991.86795711963 </field> 
     844      <field id="strd_tot_li"      long_name="layer integrated salt   -trend: total model trend :"         unit="kg/(m^2 s)" > strd_tot_e3t * 1026.0 * 0.001  </field> 
     845    
     846      <!-- **** these trends have not been apportioned to all/even/odd ts yet **** --> 
    809847      <!-- variables available with ln_KE_trd --> 
    810848      <field id="ketrd_hpg"     long_name="ke-trend: hydrostatic pressure gradient"          unit="W/s^3"                        /> 
     
    11161154    --> 
    11171155 
     1156     <field_group id="TRD" > 
     1157          <field field_ref="ttrd_totad_li"   name="opottempadvect"  /> 
     1158          <field field_ref="ttrd_iso_li"     name="opottemppmdiff"  /> 
     1159          <field field_ref="ttrd_zdfp_li"    name="opottempdiff"  /> 
     1160          <field field_ref="ttrd_evd_li"     name="opottempevd" /> 
     1161          <field field_ref="strd_evd_li"     name="osaltevd" /> 
     1162          <field field_ref="ttrd_qns_li"     name="opottempqns"  /> 
     1163          <field field_ref="ttrd_qsr_li"     name="rsdoabsorb" operation="accumulate" /> 
     1164          <field field_ref="strd_totad_li"   name="osaltadvect" /> 
     1165          <field field_ref="strd_iso_li"     name="osaltpmdiff"  /> 
     1166          <field field_ref="strd_zdfp_li"    name="osaltdiff" /> 
     1167    </field_group> 
     1168     
    11181169    <field_group id="mooring" > 
    11191170      <field field_ref="toce"         name="thetao"   long_name="sea_water_potential_temperature"      /> 
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