OPAL - NETWORK FOR THE DETECTION OF STRATOSPHERIC CHANGE OZONE PROFILER ASSESSMENT AT LAUDER, NEW-ZEALAND 1 - BLIND INTERCOMPARISON

An intercomparison of ozone-profiling instruments, two differential ab sorption lidars, a microwave radiometer, electrochemical concentration sondes, and the SAGE II satellite instrument is presented. The ground -based instruments were located at the Network for the Detection of St ratospheric Change (NDSC) primary station at Lauder, New Zealand. The campaign, which took place between April 15 and 29, 1995, strictly fol lowed the NDSC guidelines for a blind intercomparison. Agreement betwe en the measurements was within 15% for single profiles and within 10% for the campaign average, in the region from 20 to 40 km altitude. Out side of this region the differences were greater but can generally be ascribed to the limits of a particular instrument.