Functional Precision of National Weather Service Upper-Air Measurements Using VIZ Manufacturing Co. 'A' Radiosonde (Model 1492-510)

摘要

The functional precision of VIZ Model 1492-510 (VIZA) radiosonde was determined using the National Weather Service functional analysis test package. The comparisons were made from 35 flights of paired radiosondes suspended from the same balloon. Functional precision is given by the root mean square of the differences between measurements made by 2 sensors of the same type exposed to the same environment. Results are summarized for simultaneous measurements at one minute intervals as well as measurements at a predefined set of pressure levels. The tests were conducted in conjunction with acceptance testing of replacement radiosondes and results are reported here for use by the meteorological community in specifying the characteristics of this radiosonde, which was used operationally from 1986 to 1989.