Computer Science – Sound
Scientific paper
Oct 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981jgr....86.9661r&link_type=abstract
(International Symposium on Middle Atmosphere Dynamics and Transport, University of Illinois, Urbana, IL, July 28-Aug. 1, 1980.)
Computer Science
Sound
85
Atmospheric Sounding, Atmospheric Tides, Middle Atmosphere, Planetary Waves, Satellite Sounding, Traveling Waves, Annual Variations, Brightness Temperature, Nimbus Satellites, Power Spectra, Radiometers, Satellite-Borne Instruments, Wave Propagation
Scientific paper
The Selective Chopper Radiometer (SCR) on board the Nimbus 5 satellite measures radiance emitted by layers of atmosphere 10-18 km thick from the ground up to about 40 km. The Pressure Modulator Radiometer (PMR) on Nimbus 6 is an improved version of the SCR designed to measure radiances from 40 up to about 80 km. An analysis was conducted of data from five channels of the SCR and three channels of the PMR, giving a vertical coverage extending from 20 up to about 85 km. It was found possible to observe a 2-day wave at different heights for four summers in each of the Northern and Southern Hemispheres. Concerning the identification of the 2-day wave, it is most probably, like the previously observed 5-day wave, a free oscillation of the atmosphere. As such it would correspond to one of the solutions of the Laplace tidal equations in a motionless atmosphere.
Prata Aluizio Jr.
Rodgers C. D.
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