Physics
Scientific paper
Mar 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002georl..29e..15f&link_type=abstract
Geophysical Research Letters, Volume 29, Issue 5, pp. 15-1, CiteID 1071, DOI 10.1029/2001GL013542
Physics
5
Atmospheric Composition And Structure: Middle Atmosphere-Composition And Chemistry, Atmospheric Composition And Structure: Instruments And Techniques, Meteorology And Atmospheric Dynamics: Mesospheric Dynamics
Scientific paper
A resonance lidar has made regular measurements of mesospheric potassium at the Arecibo Observatory (18.3°N, 66.75°W) since July 1999. Through July 2001 a total of 65 nights of density measurements were carried out, amounting to several nights each month over most of the period. The layer shows considerable nightly and seasonal variation: Spring and early summer nights had frequent sporadic layer activity; nightly variability in the layer width was large due to sporadic layer activity, but the seasonal variation was small; the altitude of the layer centroid was fairly constant throughout the year; and the column abundance showed semi-annual variation. These results are compared with a similar set of potassium measurements from a mid-latitude site, and the latitudinal implications are discussed.
Castleberg Paul A.
Collins Stephen C.
Delgado Rubén
Friedman Jonathan S.
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