Changes between Version 25 and Version 26 of Users/Model Interfacing/Biogeochemistry Coarsening


Ignore:
Timestamp:
2018-07-13T11:00:18+02:00 (2 years ago)
Author:
clevy
Comment:

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  • Users/Model Interfacing/Biogeochemistry Coarsening

    v25 v26  
    1 = Trough grid refinement (AGRIF nesting & coarsening) 
     1= On line biogeochemistry coarsening 
    22 
    33[[PageOutline(2-3)]] 
     
    99}}} 
    1010 
    11 == Coarsening of physics for biogeochemistery model 
     11== Coarsening of physics for biogeochemistry model 
    1212 
    1313=== Presentation 
    1414 
    15 A capacity of coarsening physics to force a BGC model coupled to NEMO has been developed in NEMO_3.6. This capacity allow to run 'online' a BGC model coupled to OPA-LIM with a lower resolution, to reduce the CPU coast of the BGC model, while preserving the effective resolution of the dynamics. 
     15A capacity of coarsening physics to force a BGC model coupled to NEMO has been developed in NEMO_3.6, in an associated branch. This capacity allow to run 'online' a BGC model coupled to OPA-LIM with a lower resolution, to reduce the CPU coast of the BGC model, while preserving the effective resolution of the dynamics. 
    1616 
    17 This capacity is not included in the [browser:branches/2015/nemo_v3_6_STABLE/NEMOGCM NEMO_3.6] , but is available in a specific [browser:branches/2015/dev_r5003_MERCATOR6_CRS branch] of the 3.6 stable. This branch is regularly phased with the NEMO_3.6. 
     17This capacity is not included in the 3_6 release itself, but is available in a   
     18[browser:/branches/2015/dev_r5003_MERCATOR6_CRS@9500 specific associated branch].  
     19This branch is regularly phased with the NEMO_3.6. 
    1820An associated ticket to follow evolution is  [ticket:1426 here]. 
    1921 
    2022A presentation is available [attachment:crs_wiki_1.1.pdf​ here], where the methodology is presented. 
     23 
     24=== What is available and working for now in this version 
     25[[Color(To be completed ,lime)]] 
     26 
     27 
     28 
     29=== Description of the successful validation tests  
     30[[Color(To be completed ,lime)]] 
     31 
     32=== What is not working yet with on line coarsening of biogeochemistry 
     33[[Color(To be completed ,lime)]] 
     34 
     35''should include precise explanation on MPI decomposition problems too'' 
     36 
     37=== Extract the on line biogeochemistry branch 
     38To get the appropriate source code with the on line coarsening of biogeochemistry feature: 
     39 
     40{{{ 
     41svn co https://forge.ipsl.jussieu.fr/nemo/svn/branches/2015/dev_r5003_MERCATOR6_CRS@9500 
     42}}} 
     43 
    2144 
    2245=== How to activate coarsening ? 
     
    102125 
    103126They might be on the coarsened grid. 
     127 
     128== Perspectives 
     129 
     130For the future, a few options are on the table to implement coarsening for biogeochemistry in 4.0 and future releases. Those will be discussed in Autumn 2018