Physics
Scientific paper
Jun 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992georl..19.1211b&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 19, no. 12, June 19, 1992, p. 1211-1214.
Physics
11
Advanced Very High Resolution Radiometer, Cloud Cover, Noaa Satellites, Optical Radar, Volcanoes, Australia, Mathematical Models, Satellite Observation, Zonal Flow (Meteorology)
Scientific paper
On August 20 1991, unusual, hazy clouds were encountered by commercial jet aircraft flying over continental SE Australia. Image data from the AVHRR on board the NOAA satellites have been used to discriminate the clouds from water/ice clouds. The clouds were again observed over Australia by lidar eight days later, presumably after a complete circumnavigation in the zonal winds of the southern mid-latitudes. The lidar measurements revealed a strong scattered signal from a layer situated near 12 km above the surface. The satellite and lidar data indicate that the clouds were of volcanic origin and it is suggested that they originated from the Mt. Hudson eruptions in Chile. A numerical model was used to simulate the transport of the volcanic clouds and a good agreement was found between the projected position of the clouds and observations.
Barton Ian J.
Prata Aluizio Jr.
Sewell Young Anne
Watterson Ian G.
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