Tropical mesopause climatology over the Arecibo Observatory

Details Tropical mesopause climatology over the Arecibo Observatory Tropical mesopause climatology over the Arecibo Observatory

Jun 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003georl..30l..44f&link_type=abstract

Geophysical Research Letters, Volume 30, Issue 12, pp. 44-1, CiteID 1642, DOI 10.1029/2003GL016966

Physics

6

Meteorology And Atmospheric Dynamics: Climatology (1620), Meteorology And Atmospheric Dynamics: Mesospheric Dynamics, Meteorology And Atmospheric Dynamics: Waves And Tides

Scientific paper

We report on the first annual cycle of mesopause-region (82-105 km) temperature profiles at a tropical latitude site, the Arecibo Observatory (18.35°N, 66.75°W), measured by potassium resonance lidar. Based on 74 night-time temperature profiles of observing periods greater than 5 hours we observe a mean temperature profile with a mesopause altitude of 98 km and temperature of 193 K. The annual mean nighttime temperature profile is similar to that seen at mid-latitudes, but there are striking differences in seasonal structure. The mesopause region mean seasonal structure at Arecibo experiences a temperature minimum of 176 K at 100 km during mid-summer. The winter period minimum of about 190 K is found mostly in a broad flat distribution between 90 and 95 km, and less frequently near 100 km.

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