For preparations and running the simulation needed for this tutorial click here ...
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To start this tutorial please enter folder 'forward'. |
First, we define the parameter and time step for the cross section then call flexpart_filter() to extract the data. The result is a fieldset with units of "kg m**-3", which we scale explicitly to "ng m**-3" units for plotting.
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dIn="result_fwd/"
inFile=dIn & "conc_s001.grib"
#Define parameter and step
par="mdc"
step=48
#Get fields for all levels for a given step
g=flexpart_filter(source: inFile,
param: par,
levType: "hl",
step: step)
#Scale into ng/m3 units
g=g*1E12
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Next, we define the contouring:
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#The contour levels
cont_list=[1,10,50,100,150,200,250,500,750,1000,2000,5000,7000]
#Define contour shading
conc_shade = mcont(
legend : "on",
contour : "off",
contour_level_selection_type : "level_list",
contour_level_list : cont_list,
contour_label : "off",
contour_shade : "on",
contour_shade_method : "area_fill",
contour_shade_max_level_colour : "red",
contour_shade_min_level_colour : "RGB(0.14,0.37,0.86)",
contour_shade_colour_direction : "clockwise",
contour_method: "linear"
) |
Then, we define the cross section view along this line:
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xs_view = mxsectview( bottom_level : 0, top_level : 16000, line : [63.31,-25,63.31,9] ) |
and finally generate the plot:
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plot(xs_view,g,conc_shade) |
Having run the macro we will get a plot like this:
