Changes between Version 2 and Version 3 of user/smasson/NEMOConfiguration Data Base


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Timestamp:
2011-05-06T17:33:01+02:00 (10 years ago)
Author:
smasson
Comment:

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  • user/smasson/NEMOConfiguration Data Base

    v2 v3  
    2121 2) to constitute a data base illustrating the impacts of different configurations of the same code. This catalogue of simulations based on the same model but with different configurations will later on be used to understand the processes at stake in ocean modelling. [[BR]] 
    2222 3) to establish and deliver a standard experiment protocol that could be used by researchers to validate their own implementation of NEMO. Next, this protocol will be used to explore and quantify the specificities of a configuration of a particular user. 
     23 
     24 
     25= 2. experimental Protocol = 
     26 
     27 
     28We decided to follow the experimental protocol defined by the CLIVAR Working Group on Ocean Model Development ([http://dx.doi.org/10.1016/j.ocemod.2008.08.007 Griffies et al. 2009]). We therefore adopt the standard Common Ocean-ice Reference Experiments dataset (CORE2) to force the model ([http://dx.doi.org/10.1007/s00382-008-0441-3 Large and Yearger 2009]) that is available for download from the [http://data1.gfdl.noaa.gov/nomads/forms/mom4/COREv2.html GFDL server]. This dataset contains the air-sea fluxes of momentum, heat, fresh-water computed globally at frequencies ranging from 6-hourly to monthly. This dataset provides either one normal year of forcing (to force long climatological simulations) or 60 years interannual forcing (1948-2007, to force simulations over the recent period). 
     29 
     30We decided to conduct 2 kinds of experiments: 
     31 
     32 * a 2000-year long simulation forced with the perpetual normal year 
     33 * a 180-year long simulation made of 3 time 60 years of the interannual forcing 
     34 
     35 
     36The preparation of the input files has been done through [https://code.zmaw.de/projects/cdo cdo] and [http://nco.sourceforge.net/ nco]. This work is make up of 3 parts: 
     37 
     38 1) mask the continents [[BR]] 
     39 2) fill masked values with neighbouring oceanic values [[BR]] 
     40 3) interpolation on ORCA grid with bilinear (scalar) or bicubic interpolation (vector) [[BR]] 
     41 
     42Note that the 3rd point is not absolutely needed as NEMO can perform "on the fly interpolation". The rotation of the vector on ORCA grid is done within the code. 
     43 
     44The complete description of this work is given on NEMO web page: [http://www.nemo-ocean.eu/Using-NEMO/Pre-and-post-processing-packages/Pre-Processing/cdo-interpolation http://www.nemo-ocean.eu/Using-NEMO/Pre-and-post-processing-packages/Pre-Processing/cdo-interpolation]. Interpolated data can be found at [http://dodsp.idris.fr/reee605/CORE2_clima/ http://dodsp.idris.fr/reee605/CORE2_clima/] and [http://dodsp.idris.fr/reee605/CORE2_interan/ http://dodsp.idris.fr/reee605/CORE2_interan/]  
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