S. Crewell et al., COMPARISON OF CLO MEASUREMENTS BY AIRBORNE AND SPACEBORNE MICROWAVE RADIOMETERS IN THE ARCTIC WINTER STRATOSPHERE 1993, Geophysical research letters, 22(12), 1995, pp. 1489-1492
In February 1993 measurements of chlorine monoxide ClO, one of the key
substances in catalytic ozone destruction, were performed over Scandi
navia by two microwave receivers, the Submillimeter Atmospheric Sounde
r (SUMAS) on board the German research aircraft FALCON and the Microwa
ve Limb Sounder (MLS) on board the Upper Atmospheric Research Satellit
e (UARS). High ClO concentrations (>1 ppb) inside the polar vortex at
approximately 20 km altitude were detected by both experiments. A comp
arison shows good agreement of both sensors in the location of enhance
d ClO.