36 | | Both models answer to a precise need which led to the previous choices. |
37 | | Both models seem to have good results on the site studied. |
38 | | Several options are possible in ORCHIDEE, one would be a flag to activate one scheme or the other. This, at the end, should be avoid in order to have only one working model. |
39 | | The best option would be to implement a mixed version of both models keeping a resolution without iterations and introducing the dynamic resistances. |
40 | | Looking at the previous table: |
41 | | • Root absorption: Best option would be to activate a flag to choose between the three models; |
42 | | • Transport: Best option would be to have oth dynamic resistances and capacitances ; |
43 | | • Stomatal conductance: Best option would be to have only one stomatal conductance (this option leads to instabilities as mentioned in Julien’s model; |
44 | | • Resolution method: Best option would be to avoid iterations as much as possible. Moreover, recalculating the energy budget has to be avoid in order to remove iterations in mleb. |
45 | | To avoid instability, several options were given: |
46 | | • Look more precisely at the storage pools that should act as a buffer; |
47 | | • Look at Krinner et al. (2005) were a method to smooth the curves is described; |
48 | | • Improve the estimation method. |
| 36 | |
| 37 | Both models seem to have good results on the site studied. Several options are possible in ORCHIDEE, one would be a flag to activate one scheme or the other (but hard to maintain). The best option would be to implement a mixed version of both models keeping a resolution without iterations and introducing the dynamic resistances: |
| 38 | - Root absorption: Best option would be to activate a flag to choose between the three models; |
| 39 | - Transport: Best option would be to have oth dynamic resistances and capacitances ; |
| 40 | - Stomatal conductance: Best option would be to have only one stomatal conductance (this option leads to instabilities as mentioned in Julien’s model; |
| 41 | - Resolution method: Best option would be to avoid iterations as much as possible. Moreover, recalculating the energy budget has to be avoid in order to remove iterations in mleb. |
| 42 | - To avoid instability, several options were given: |
| 43 | - Look more precisely at the storage pools that should act as a buffer; |
| 44 | - Improve the "predictor / corrector" approach |
| 45 | |