Radar and optical measurements of C2n.

Comparison is made of C(2)(n) profile measurements obtained with a stellar scintillometer and uhf 440-MHz radar. The scintillometer C(2)(n) was obtained at altitude positions between 5 and 18 km, each with a broad height resolution. The radar C(2)(n) was obtained at 400-m intervals with 550-m height resolution. The radar C(2)(n) measurements, when smoothed with the scintillometer weighting function, are in good agreement with the scintillometer C(2)(n) measurements.