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<p>The emissions of CO calculated in this example can be seen in Figure 1 in <code>g/d</code> (by pixel) and the final emissions on Figure 2 in <code>MOL h-1 km-1</code> (by model grid cell). This emissions can be written to WRF-Chem emission files using some package that makes the interface with NetCDF format such as <strong>ncdf4</strong> [@ncdf4], <strong>RNetCDF</strong> [@RNetCDF], <strong>ncdf.tools</strong> [@ncdftools] or with the <strong>eixport</strong> [@eixport]. Some output values (