Changes between Version 2 and Version 3 of DevelopmentActivities/ORCHIDEE-CNP/TechnicalMods


Ignore:
Timestamp:
2016-06-28T16:58:08+02:00 (8 years ago)
Author:
dgoll
Comment:

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  • DevelopmentActivities/ORCHIDEE-CNP/TechnicalMods

    v2 v3  
    1010= 2. The analytical spinup of the biogeochemical cycles [OUTDATED] = 
    1111[OUTDATE INFORMATION HERE] 
    12 One should do a sequential spinup as described in the the howto run the model section. The code takes care about the rest. 
     12===One should do a sequential spinup as described in the the howto run the model section. The code takes care about the rest.=== 
    1313[OUTDATE INFORMATION HERE] 
    14  
    15  
    16  
    1714It is a bit tricky to figure out how to equilibrate the biogeochemical cycles in an efficient way. 
    18 This site deals with the simulation setup: [https://forge.ipsl.jussieu.fr/orchidee/wiki/DevelopmentActivities/ORCHIDEE-CNP/spinup] 
     15This OUTDATED site deals with the simulation setup: [https://forge.ipsl.jussieu.fr/orchidee/wiki/DevelopmentActivities/ORCHIDEE-CNP/spinup] 
    1916 
    2017Here I just list modifications I use currently. This might change. 
    … …  
    2421In such a case, we have to add artificially the needed amount of nutrients to the supply. Every time it is needed to add nutrients we do it during spinup. 
    2522 
    26 == 2.2 prescribed N inputs from BNF during the spinup == 
    27 The biological fixation of N2 from the atmosphere is computed as a function of NPP and plant C:N:P stoichiometry. During the spinup large amounts of organic matter accumulate which is connected with a high immobilisation flux. We thus must ensure that the N inputs are rather high and constant in time. Therefore we read BNF rates in from a file rather than computing them dynamically. 
    2823 
    29 == 2.3 Spin up of soil CNP stoichiometry == 
    30 It was more like a bugfix. The running window of the average of CN_som_litter_longterm should be limited to a given period not to "unlimited" for the case you want to run long spin up cycles (spinup_period=50yr). 
    31  
    32 [[Image(CNP_longterm.png)]] 
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    37 TODO: It would be good to have an automatized test if the mineral N  & P cycles are in equilibrium comparable like it is done with the C pools.