Improved rocket ozonesonde (ROCOZ-A). I - Demonstration of precision

Measurements of the daytime ozone distribution in the stratosphere have been made with an improved rocket ozonesonde (ROCOZ-A). Vertical cumulative ozone as a function of geometric altitude is the basic information content of these measurements. The instrument-to-instrument repeatability of the ozonesonde was determined by two series of four soundings each. At one standard deviation the instrument repeatability averages from 2.0 to 2.5 percent over the entire altitude range of the instrument. The worst measured repeatability is 3.7 percent at 55 km for one of the flight series.