Physics
Scientific paper
Dec 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agufmsa53a1155f&link_type=abstract
American Geophysical Union, Fall Meeting 2005, abstract #SA53A-1155
Physics
3332 Mesospheric Dynamics, 3389 Tides And Planetary Waves
Scientific paper
In this paper we present resonance lidar measurements of mesopause-region temperatures from two sites with similar tropical latitudes (18.35°~N and 20.7°~N) but separated in longitude by nearly 90° (66.75°~W and 156.3°~W), at the Arecibo Observatory in Puerto Rico and the Maui Space Surveillance Complex atop Mount Haleakala, Hawaii. The results to be presented come from seasonal composite mean nights. These measurements were made from 2002-2004 at Haleakala and 2003-2005 at Arecibo. In spite of the similar latitudes of the two sites, a number of distinct differences in the mesopause structure are noted. Some examples are: Temperatures are modulated more strongly by tides over Haleakala than Arecibo; The summer mesopause at Haleakala is low (88 km), whereas at Arecibo it is high (99 km); And there is a large temperature inversion layer near 93 km that results in a dual mesopause at Haleakala that is much less prominent at Arecibo.
Chu Xiaoyong
Friedman Joshua S.
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