Wind data based on hourly observations 1951-1960. Schematic of radar beam height above Earth s surface accounting for bending of the beam by vertical variation of refractive index, and for the curvature of the earth. Stack Plus 2 Along. The ABLE profilers are marked by an x . Mixed Cat's Ears and Stack.
Aircraft can alternate positions to minimize bias or system-failure problems.
Not all figures have been converted into digitized form at this time.