 predict one map at a time, whereas the tmd_predict example creates a
% cube, where the third dimension corresponds to time. Generally for small
% regions, for a small number of timesteps, and for small model files (with
% few grid points and/or few constituents), the cube approach will be
% faster, because it only loads and interpolates the data once. In this
% case, we solve one frame at a time (which is slower, overall) because
% memory can become an issue for very large cubes. 
% 

%% Solve tides 
% Sol