Wind data inferred from Figure 5 of Koch et al. (1983), provided to illustrate the interpBarnes() function. Columns wind$x and wind$y are location, while wind$z is the wind speed, in m/s.


S. E. Koch and M. DesJardins and P. J. Kocin, 1983. ``An interactive Barnes objective map analysis scheme for use with satellite and conventional data,'' J. Climate Appl. Met., vol 22, p. 1487-1503.