Physics – Geophysics
Scientific paper
Feb 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009a%26g....50a...8h&link_type=abstract
Astronomy & Geophysics, Volume 50, Issue 1, pp. 1.08-1.14.
Physics
Geophysics
1
Scientific paper
Polar mesospheric summer echoes (PMSEs) are radar features observed around 80-90 km, much higher than ordinary clouds. The ways in which nanoparticles affect radar reflectivity near the summer polar mesopause have been elucidated through the use of rocket-borne ``dust'' detectors and observations of scattered laser light. Artificial heating of the radar scattering regions by powerful microwave transmitters and simultaneous radar observations have also provided important data. Further efforts to understand the mechanisms producing mesospheric radar echoes and their seasonal variations will help refine our knowledge of large-scale atmospheric dynamics.
Hartquist Tom
Havnes Ove
Kassa Meseret
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