Physics
Scientific paper
Dec 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986jatp...48.1153l&link_type=abstract
(International Association of Geomagnetism and Aeronomy, Scientific Assembly on Dynamics and Remote Sensing of the Middle Atmosp
Physics
19
Diurnal Variations, Mesosphere, Microwave Radiometers, Ozonometry, Ground Stations, Spectrum Analysis, Temporal Resolution, Vertical Distribution
Scientific paper
During February and March 1985 ground-based microwave observations of the 142.175 GHz ozone line were made to measure the variations of mesospheric ozone during sunset, throughout the night, and during sunrise. Data was taken from 2 h before sunset to 2 h after sunrise. The time resolution was approximately 16 min. Above 50 km a rapid ozone increase at sunset and a decrease at sunrise was observed. The time required for both changes (10-90 percent) was about 1 h. Daytime ozone concentrations in the mesosphere were found to be larger after sunrise than before sunset. After the initial sunset rise the nighttime ozone continued to increase at levels above 60 km, while decreasing below this level. The retrieved night to day ozone ratio was maximum (4.2) at 70 km, near the top of the measurement range. No diurnal changes were seen below 45 km.
Kuenzi K. F.
Lobsiger E.
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