Output

The output of alphaBetaLab consists of the transparencies α and β computed for obstructed and shadowed cells, and of the cell size for each spectral direction. Such output is saved to two files, the first for the local dissipation, the second for the shadow effect. The format of these files can be read by the UOST source term of WW3. These files have names, respectively, obstructions_local.gridname.in and obstructions_shadow.gridname.in . Below, a short explanation of the file format.

The character ‘$’ at the beginning of a row identifies comments.

The first non-comment line indicates the number of involved cells (by the local dissipation or the shadow effect).

Then, cell-by-cell:

A line indicating the matrix-coordinates of the cell in the model.

A line indicating the size of the cell in km along each direction.

The matrix of α for each spectral component. Each row (line) is a frequency, each column is a direction. Currently all the rows will result equal, because alphaBetaLab supports only transparency coefficients changing with directions.

The matrix of β for each spectral component. Each row (line) is a frequency, each column is a direction. Currently all the rows will result equal, because alphaBetaLab supports only only transparency coefficients changing with directions.

Examples of such files can be found in the examples directory in the repository.