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Description of the MesoNH file format » History » Version 4

Rafael Bailon-Ruiz, 2021-03-15 16:20

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h1. Description of the MesoNH file format
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MesoNH simulation output is saved into NetCDF (.nc) files with the specific dimensions and variables below. For information, the spatial resolution is *25m per cell* for the <code>W_E_direction</code> , <code>W_E_direction</code>, and <code>vertical_levels</code>. Temporal resolution is *5 seconds*.
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The dataset description below has been obtained with the <code>ncinfo</code> command included in <code>netcdf4-python</code>
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<pre>
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title: Meso-NH simulation
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    grid_resolution_in_meters:    25.000000      x    25.000000     
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    description: Data are from the file REFHR.1.ARMCu.001.dia       
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    comments:  Meso-NH  experience starts at 1997    6   21   41400.0000   and 
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               segment starts at 1997    6   21   63000.0000 
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dimensions(sizes): 
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    time(144), 
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    W_E_direction(256),
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    S_N_direction(256), 
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    vertical_levels(160)
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variables(dimensions): 
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    int32 time(time), 
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    float32 W_E_direction(W_E_direction), 
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    float32 S_N_direction(S_N_direction), 
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    float32 LON0(), 
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    float32 LAT0(), 
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    float32 LONOR(), 
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    float32 LATOR(),
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    float32 BETA(), 
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    float32 RPK(), 
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    float32 THT(time, vertical_levels, S_N_direction, W_E_direction), 
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    float32 VLEV(vertical_levels, S_N_direction, W_E_direction), 
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    float32 LAT(S_N_direction, W_E_direction), 
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    float32 LON(S_N_direction, W_E_direction), 
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    float32 TKET(time, vertical_levels, S_N_direction, W_E_direction), 
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    float32 UT(time, vertical_levels, S_N_direction, W_E_direction), 
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    float32 VT(time, vertical_levels, S_N_direction, W_E_direction), 
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    float32 WT(time, vertical_levels, S_N_direction, W_E_direction), 
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    float32 PABST(time, vertical_levels, S_N_direction, W_E_direction), 
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    float32 RVT(time, vertical_levels, S_N_direction, W_E_direction), 
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    float32 RCT(time, vertical_levels, S_N_direction, W_E_direction), 
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    float32 RRT(time, vertical_levels, S_N_direction, W_E_direction), 
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    float32 SVT001(time, vertical_levels, S_N_direction, W_E_direction),
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    float32 SVT002(time, vertical_levels, S_N_direction, W_E_direction),
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    float32 SVT003(time, vertical_levels, S_N_direction, W_E_d
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!ncview.png!
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irection)
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</pre>
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h2. Viewing the contents of a NetCDF (.nc) file
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the nco package provides the ncview program to display netCDF files.
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!ncview.png!
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h2. Sample cloud file
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"cloud_example.nc":/attachments/download/3295/cloud_example.nc
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h2. See also
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* [[Available datasets]]