Changes between Version 1 and Version 2 of Evaluation/Fluxnet/r1118cwrr_corr


Ignore:
Timestamp:
2013-03-20T15:33:26+01:00 (11 years ago)
Author:
nvuilsce
Comment:

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  • Evaluation/Fluxnet/r1118cwrr_corr

    v1 v2  
    11= r1118cwrr_corr = 
     2 
     3We diagnosed the reason why the results obtained with r1118 with CWRR are very different that those obtained with r1013_choisnel (see Ticket #91). [[BR]] 
     4Indeed, the bare soil evaporation is very different between r1013_choisnel and r1118_cwrr. 
     5The vbeta4 term that is calculated differently in the 2 versions and that impacts on the evaporation calculation has also values that differ strongly bewteen r1013choisnel and r1118_cwrr. 
     6 
     7As a test, an alternative simulation (to r1118_cwrr) has been done, in which vbeta4 is reduced by changing the following lines in hydrol.f90: 
     8 
     9{{{ 
     10          IF ((evapot(ji).GT.min_sechiba) .AND. & 
     11               (tmc_litter(ji,jst).GT.(tmc_litter_wilt(ji,jst)))) THEN 
     12             evap_bare_lim_ns(ji,jst) = evap_bare_lim_ns(ji,jst) / evapot(ji) 
     13          ELSEIF((evapot(ji).GT.min_sechiba).AND. & 
     14               (tmc_litter(ji,jst).GT.(tmc_litter_res(ji,jst)))) THEN 
     15             evap_bare_lim_ns(ji,jst) =  un/deux * evap_bare_lim_ns(ji,jst) / evapot(ji) 
     16          END IF 
     17}}} 
     18by 
     19{{{ 
     20        IF ((evapot(ji).GT.min_sechiba) THEN 
     21             evap_bare_lim_ns(ji,jst) = 0.15*evap_bare_lim_ns(ji,jst) / evapot(ji) 
     22        ENDIF    
     23}}} 
     24This constitutes the simulation r1118cwrr_corr 
     25Overall, this simulation leads to a much better agreement with the observations, especially for DBF sites.  
    226 
    327== [wiki:/Evaluation/Fluxnet/r1118cwrr_corr/vs_r1118cwrr r1118cwrr_corr vs r1118cwrr] ==