Changes between Version 1 and Version 2 of ticket/350/TicketSummary


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Timestamp:
Nov 20, 2017 5:02:40 PM (11 months ago)
Author:
Martin Dix
Comment:

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  • ticket/350/TicketSummary

    v1 v2  
    77Maps of annual mean differences attached. NetCDF files with the monthly data are /short/p66/mrd599/am567a.pm0001.nc (JULES) and ao854a.pm0001.nc (CABLE).
    88
    9 In the annual mean the TOA net flux is 1.2 W/m$^2$ with JULES and -2.3 with CABLE, consistent with the cooling.
     9In the annual mean the TOA net flux is 1.2 W/m^2^ with JULES and -2.3 with CABLE, consistent with the cooling.
    1010
    1111[[Image(cable_diffs.png,100%)]]
     12
     13Net heat flux in bare soil regions is about 5 W/m^2^ in CABLE, even though the depth averaged soil temperature doesn't change much over the year.
     14
     15[[Image(net.png,100%)]]
    1216
    1317
     
    1519
    1620Used a configuration with bare soil, zero initial soil moisture and relaxation to initial atmospheric state to allow long runs with an extreme diurnal cycle.
     21
     22In routine stempv, added a calculation of the integrated soil heat content and the initial and corrected ground heat flux.
     23{{{
     24   ! Integrated heat content
     25   tmp = 0.
     26   DO k = 1, ms
     27      tmp(:) = tmp(:) + ssnow%tgg(:,k)*ssnow%gammzz(:,k)
     28   END DO
     29   write(6,*) "COLUMN HEAT", tmp
     30   write(6,*) "DT", ssnow%tgg(:,1) - tgg_save(:)
     31   write(6,*) "GA", canopy%ga, canopy%dgdtg, canopy%ga + canopy%dgdtg*(ssnow%tgg(:,1) - tgg_save(:))
     32}}}
     33
     34This can be compared with the net surface heat flux calculated from the SCM diagnostics {{{surfsw + surf_lw - sens_ht - lat_ht}}}.
     35
     36The old access 1.3 version of the SCM doesn't have quite the same options for atmospheric relaxation but it's possible to set up a case that has a similarly large diurnal cycle and soil warming.
     37
     38Averaged over the last 40 days of the runs
     39|| || 10.6 || 7.3 ||
     40|| SCM net || 10.87 || 6.77 ||
     41|| Soil change || 5.18 || 6.51 ||
     42|| GA || 5.87 || 8.69 ||
     43|| GA corrected || 5.22 || 9.34 ||
     44
     45In access 1.3 there was a good agreement between the SCM net flux and the soil temperature change, though for some reason the agreement with GA is poorer. In 10.6 CABLE seems to be losing about 5 W/m^2^.