Define a MYSTIC 2D elevation input file (default: elevation2D.dat).
mc_elevation_file file
Nx Ny dx dy
ix iy elevation
...
The
expected format of the elevation file is:
where Nx and Ny are the number of grid boxes in x- and y-direction,
dx and dy are the size of the grid boxes in km.
In the second and the following lines the indices in x- and y-direction
(ix=1…Nx, iy=1…Ny) and the elevation in km of each point are specified.
Attention: While the other files refer to grid boxes,
the elevation is defined at grid points. It has to be this
way because each ”elevation pixel” contains a surface
which is defined by the four cornes of the pixel. If the
grid covers an area of 200x200 km and the pixel sizes
are dx = 1km and dy = 1km, the elevation has to be defined
at 201x201 points (ix = 1 .. Nx, iy = 1 .. Ny).
Also, make sure that the elevation doesn't cross or even touch the 1D surface. Since the default altitude is 0 that means that the minimum elevation must be larger than 0!