coriolisf documentation

The coriolisf function returns the Coriolis frequency for any given latitude(s). The Coriolis frequency is sometimes called the Coriolis parameter or the Coriolis coefficient.

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f = coriolisf(lat)
f = coriolisf(lat,rot)


f = coriolisf(lat) returns Earth's Coriolis frequency for any locations(s) at latitude(s) lat. By default, the Coriolis frequency is given in units of rad/s.

f = coriolisf(lat,rot) specifies a rate of rotation rot. By default, rot is Earth's present-day rate of rotation 7.2921 x 10^-5 rad/s, but a different rate may be specified to model Earth at a different time, other celestial bodies, or the Coriolis parameter in a different unit of frequency.


Make a a 1°x1° grid, with cdtgrid, and get the Coriolis parameter for corresponding to each grid cell:

[Lat,Lon] = cdtgrid;

f = coriolisf(Lat);
globepcolor(Lat,Lon,f)          % coriolis f as pcolor
globeborders                    % national borders
globegraticule('linestyle',':') % the grid lines

view(20,5)                      % sets the globe viewing angle

caxis([-1 1]*0.146e-3)          % sets color axis limits
cb = colorbar('location','southoutside');
xlabel(cb,'coriolis frequency rad s^{-1}')
cmocean diff                    % sets the colormap
axis tight                      % minimizes empty space

Author Info

This function is part of the Climate Data Toolbox for Matlab. The function and supporting documentation were written by Chad A. Greene of the University of Texas at Austin.