That's quite a difference from the 13.8 degree value we obtained using 
% the unweighted mean! And it's not surprising: The "unweighted" mean in this
% context was actually a misnomer because by giving equal weight to each grid
% cell in the mean SST calculation, we were actually giving undue weight 
% to the tiny grid, cold grid cells near the poles. So it is no surprise 
% that the "unweighted" mean SST value is lower than the area-averaged SST value. 

%% Author Info
% This function is part of the <http: