+Add runtime parameter WRITE_TRACER_MIN_MAX

  Added the new runtime parameters WRITE_TRACER_MIN_MAX and
WRITE_TRACER_MIN_MAX_LOC to the MOM_sum_output module to control whether the
maximum and minimum values of temperature, salinity and some tracers are
periodically written to stdout, perhaps with their locations, as determined by
array_global_min_max.  These can be expensive global reductions, so by default
these are set to false.  All solutions are bitwise identical, but there can be
some changes to the output to stdout and there will be new entries in the
MOM_parameter_doc.debugging files.

src/diagnostics/MOM_sum_output.F90

@@ -20,6 +20,7 @@ module MOM_sum_output
 use MOM_io,            only : axis_info, set_axis_info, delete_axis_info, get_filename_appendix
 use MOM_io,            only : attribute_info, set_attribute_info, delete_attribute_info
 use MOM_io,            only : APPEND_FILE, SINGLE_FILE, WRITEONLY_FILE
+use MOM_spatial_means, only : array_global_min_max
 use MOM_time_manager,  only : time_type, get_time, get_date, set_time, operator(>)
 use MOM_time_manager,  only : operator(+), operator(-), operator(*), operator(/)
 use MOM_time_manager,  only : operator(/=), operator(<=), operator(>=), operator(<)
@@ -124,6 +125,12 @@ module MOM_sum_output
                                 !! interval at which the run is stopped.
   logical :: write_stocks       !< If true, write the integrated tracer amounts
                                 !! to stdout when the energy files are written.
+  logical :: write_min_max      !< If true, write the maximum and minimum values of temperature,
+                                !! salinity and some tracer concentrations to stdout when the energy
+                                !! files are written.
+  logical :: write_min_max_loc  !< If true, write the locations of the maximum and minimum values
+                                !! of temperature, salinity and some tracer concentrations to stdout
+                                !! when the energy files are written.
   integer :: previous_calls = 0 !< The number of times write_energy has been called.
   integer :: prev_n = 0         !< The value of n from the last call.
   type(MOM_netcdf_file) :: fileenergy_nc !< The file handle for the netCDF version of the energy file.
@@ -179,6 +186,15 @@ subroutine MOM_sum_output_init(G, GV, US, param_file, directory, ntrnc, &
   call get_param(param_file, mdl, "ENABLE_THERMODYNAMICS", CS%use_temperature, &
                  "If true, Temperature and salinity are used as state "//&
                  "variables.", default=.true.)
+  call get_param(param_file, mdl, "WRITE_TRACER_MIN_MAX", CS%write_min_max, &
+                 "If true, write the maximum and minimum values of temperature, salinity and "//&
+                 "some tracer concentrations to stdout when the energy files are written.", &
+                 default=.false., do_not_log=.not.CS%write_stocks, debuggingParam=.true.)
+  call get_param(param_file, mdl, "WRITE_TRACER_MIN_MAX_LOC", CS%write_min_max_loc, &
+                 "If true, write the locations of the maximum and minimum values of "//&
+                 "temperature, salinity and some tracer concentrations to stdout when the "//&
+                 "energy files are written.", &
+                 default=.false., do_not_log=.not.CS%write_min_max, debuggingParam=.true.)
   call get_param(param_file, mdl, "DT", CS%dt_in_T, &
                  "The (baroclinic) dynamics time step.", &
                  units="s", scale=US%s_to_T, fail_if_missing=.true.)
@@ -404,6 +420,34 @@ subroutine write_energy(u, v, h, tv, day, n, G, GV, US, CS, tracer_CSp, dt_forci
   character(len=32)  :: mesg_intro, time_units, day_str, n_str, date_str
   logical :: date_stamped
   type(time_type) :: dt_force ! A time_type version of the forcing timestep.
+
+  real :: S_min   ! The global minimum unmasked value of the salinity [ppt]
+  real :: S_max   ! The global maximum unmasked value of the salinity [ppt]
+  real :: S_min_x ! The x-positions of the global salinity minima
+                  ! in the units of G%geoLonT, often [degrees_E] or [km]
+  real :: S_min_y ! The y-positions of the global salinity minima
+                  ! in the units of G%geoLatT, often [degrees_N] or [km]
+  real :: S_min_z ! The z-positions of the global salinity minima [layer]
+  real :: S_max_x ! The x-positions of the global salinity maxima
+                  ! in the units of G%geoLonT, often [degrees_E] or [km]
+  real :: S_max_y ! The y-positions of the global salinity maxima
+                  ! in the units of G%geoLatT, often [degrees_N] or [km]
+  real :: S_max_z ! The z-positions of the global salinity maxima [layer]
+
+  real :: T_min   ! The global minimum unmasked value of the temperature [degC]
+  real :: T_max   ! The global maximum unmasked value of the temperature [degC]
+  real :: T_min_x ! The x-positions of the global temperature minima
+                  ! in the units of G%geoLonT, often [degreeT_E] or [km]
+  real :: T_min_y ! The y-positions of the global temperature minima
+                  ! in the units of G%geoLatT, often [degreeT_N] or [km]
+  real :: T_min_z ! The z-positions of the global temperature minima [layer]
+  real :: T_max_x ! The x-positions of the global temperature maxima
+                  ! in the units of G%geoLonT, often [degreeT_E] or [km]
+  real :: T_max_y ! The y-positions of the global temperature maxima
+                  ! in the units of G%geoLatT, often [degreeT_N] or [km]
+  real :: T_max_z ! The z-positions of the global temperature maxima [layer]
+
+
   ! The units of the tracer stock vary between tracers, with [conc] given explicitly by Tr_units.
   real :: Tr_stocks(MAX_FIELDS_) ! The total amounts of each of the registered tracers [kg conc]
   real :: Tr_min(MAX_FIELDS_)   ! The global minimum unmasked value of the tracers [conc]
@@ -527,11 +571,20 @@ subroutine write_energy(u, v, h, tv, day, n, G, GV, US, CS, tracer_CSp, dt_forci
 
   nTr_stocks = 0
   Tr_minmax_avail(:) = .false.
-  call call_tracer_stocks(h, Tr_stocks, G, GV, US, tracer_CSp, stock_names=Tr_names, &
-                          stock_units=Tr_units, num_stocks=nTr_stocks,&
-                          got_min_max=Tr_minmax_avail, global_min=Tr_min, global_max=Tr_max, &
-                          xgmin=Tr_min_x, ygmin=Tr_min_y, zgmin=Tr_min_z,&
-                          xgmax=Tr_max_x, ygmax=Tr_max_y, zgmax=Tr_max_z)
+  if (CS%write_min_max .and. CS%write_min_max_loc) then
+    call call_tracer_stocks(h, Tr_stocks, G, GV, US, tracer_CSp, stock_names=Tr_names, &
+                            stock_units=Tr_units, num_stocks=nTr_stocks,&
+                            got_min_max=Tr_minmax_avail, global_min=Tr_min, global_max=Tr_max, &
+                            xgmin=Tr_min_x, ygmin=Tr_min_y, zgmin=Tr_min_z,&
+                            xgmax=Tr_max_x, ygmax=Tr_max_y, zgmax=Tr_max_z)
+  elseif (CS%write_min_max) then
+    call call_tracer_stocks(h, Tr_stocks, G, GV, US, tracer_CSp, stock_names=Tr_names, &
+                            stock_units=Tr_units, num_stocks=nTr_stocks,&
+                            got_min_max=Tr_minmax_avail, global_min=Tr_min, global_max=Tr_max)
+  else
+    call call_tracer_stocks(h, Tr_stocks, G, GV, US, tracer_CSp, stock_names=Tr_names, &
+                            stock_units=Tr_units, num_stocks=nTr_stocks)
+  endif
   if (nTr_stocks > 0) then
     do m=1,nTr_stocks
       vars(num_nc_fields+m) = var_desc(Tr_names(m), units=Tr_units(m), &
@@ -540,6 +593,13 @@ subroutine write_energy(u, v, h, tv, day, n, G, GV, US, CS, tracer_CSp, dt_forci
     num_nc_fields = num_nc_fields + nTr_stocks
   endif
 
+  if (CS%use_temperature .and. CS%write_stocks) then
+    call array_global_min_max(tv%T, G, nz, T_min, T_max, &
+                              T_min_x, T_min_y, T_min_z, T_max_x, T_max_y, T_max_z, unscale=US%C_to_degC)
+    call array_global_min_max(tv%S, G, nz, S_min, S_max, &
+                              S_min_x, S_min_y, S_min_z, S_max_x, S_max_y, S_max_z, unscale=US%S_to_ppt)
+  endif
+
   if (CS%previous_calls == 0) then
 
     CS%mass_prev_EFP = mass_EFP
@@ -847,24 +907,44 @@ subroutine write_energy(u, v, h, tv, day, n, G, GV, US, CS, tracer_CSp, dt_forci
           write(stdout,'("    Total Salt: ",ES24.16,", Change: ",ES24.16," Error: ",ES12.5," (",ES8.1,")")') &
               Salt*0.001, Salt_chg*0.001, Salt_anom*0.001, Salt_anom/Salt
         endif
+        if (CS%write_min_max .and. CS%write_min_max_loc) then
+          write(stdout,'(16X,"Salinity Global Min:",ES24.16,1X,"at: (",f7.2,",",f7.2,",",f8.2,")"  )') &
+                S_min, S_min_x, S_min_y, S_min_z
+          write(stdout,'(16X,"Salinity Global Max:",ES24.16,1X,"at: (",f7.2,",",f7.2,",",f8.2,")"  )') &
+                S_max, S_max_x, S_max_y, S_max_z
+        elseif (CS%write_min_max) then
+          write(stdout,'(16X,"Salinity Global Min & Max:",ES24.16,1X,ES24.16)') S_min, S_max
+        endif
+
         if (Heat == 0.) then
           write(stdout,'("    Total Heat: ",ES24.16,", Change: ",ES24.16," Error: ",ES12.5)') &
               Heat, Heat_chg, Heat_anom
         else
           write(stdout,'("    Total Heat: ",ES24.16,", Change: ",ES24.16," Error: ",ES12.5," (",ES8.1,")")') &
               Heat, Heat_chg, Heat_anom, Heat_anom/Heat
         endif
+        if (CS%write_min_max .and. CS%write_min_max_loc) then
+          write(stdout,'(16X,"Temperature Global Min:",ES24.16,1X,"at: (",f7.2,",",f7.2,",",f8.2,")"  )') &
+                T_min, T_min_x, T_min_y, T_min_z
+          write(stdout,'(16X,"Temperature Global Max:",ES24.16,1X,"at: (",f7.2,",",f7.2,",",f8.2,")"  )') &
+                T_max, T_max_x, T_max_y, T_max_z
+        elseif (CS%write_min_max) then
+          write(stdout,'(16X,"Temperature Global Min & Max:",ES24.16,1X,ES24.16)') T_min, T_max
+        endif
       endif
       do m=1,nTr_stocks
 
-         write(stdout,'("      Total ",a,": ",ES24.16,1X,a)') &
+        write(stdout,'("      Total ",a,": ",ES24.16,1X,a)') &
               trim(Tr_names(m)), Tr_stocks(m), trim(Tr_units(m))
 
-         if (Tr_minmax_avail(m)) then
-           write(stdout,'(64X,"Global Min:",ES24.16,1X,"at: (",f7.2,",",f7.2,",",f8.2,")"  )') &
-                Tr_min(m),Tr_min_x(m),Tr_min_y(m),Tr_min_z(m)
-           write(stdout,'(64X,"Global Max:",ES24.16,1X,"at: (",f7.2,",",f7.2,",",f8.2,")"  )') &
-                Tr_max(m),Tr_max_x(m),Tr_max_y(m),Tr_max_z(m)
+        if (CS%write_min_max .and. CS%write_min_max_loc .and. Tr_minmax_avail(m)) then
+          write(stdout,'(18X,a," Global Min:",ES24.16,1X,"at: (",f7.2,",",f7.2,",",f8.2,")"  )') &
+               trim(Tr_names(m)), Tr_min(m), Tr_min_x(m), Tr_min_y(m), Tr_min_z(m)
+          write(stdout,'(18X,a," Global Max:",ES24.16,1X,"at: (",f7.2,",",f7.2,",",f8.2,")"  )') &
+               trim(Tr_names(m)), Tr_max(m), Tr_max_x(m), Tr_max_y(m), Tr_max_z(m)
+        elseif (CS%write_min_max .and. Tr_minmax_avail(m)) then
+          write(stdout,'(18X,a," Global Min & Max:",ES24.16,1X,ES24.16)') &
+               trim(Tr_names(m)), Tr_min(m), Tr_max(m)
         endif
 
       enddo
@@ -1269,9 +1349,9 @@ subroutine write_depth_list(G, US, DL, filename)
 
   call create_MOM_file(IO_handle, filename, vars, 3, fields, SINGLE_FILE, &
       extra_axes=extra_axes, global_atts=global_atts)
-  call MOM_write_field(IO_handle, fields(1), DL%depth, unscale=US%Z_to_m)
-  call MOM_write_field(IO_handle, fields(2), DL%area, unscale=US%L_to_m**2)
-  call MOM_write_field(IO_handle, fields(3), DL%vol_below, unscale=US%Z_to_m*US%L_to_m**2)
+  call MOM_write_field(IO_handle, fields(1), DL%depth, scale=US%Z_to_m)
+  call MOM_write_field(IO_handle, fields(2), DL%area, scale=US%L_to_m**2)
+  call MOM_write_field(IO_handle, fields(3), DL%vol_below, scale=US%Z_to_m*US%L_to_m**2)
 
   call delete_axis_info(extra_axes)
   call delete_attribute_info(global_atts)