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Дата изменения: Wed Mar 6 00:06:04 2002
Дата индексирования: Sat Dec 22 05:36:06 2007
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Arecibo Observatory Colloquium Series
Mesopause-region temperature profiling by potassium resonance lidar
Jonathan Friedman, Arecibo Observatory
Abstract:
The mesopause region is the coldest and least accessible part of the
earth's atmosphere. Too high for study by aircraft or balloons and too
low to be reached by satellites, in situ studies are limited to
occasional sounding rocket probings. This region can be studied by
radars only during daytime hours, and these studies present many
uncertainties. Nighttime studies by airglow techniques present their
own uncertainties and are unable to resolve either the vertical spatial
or the temporal structure of this dynamic region. Resonance lidars have
been applied to the study of the thermal structure of the earth's
mesopause region for about a decade, and only in the past year at
Arecibo. In this talk, I will describe the Arecibo resonance lidar and
present some early results.