The first 80-hour continuous lidar campaign for simultaneous observation of mesopause region temperature and wind

Details The first 80-hour continuous lidar campaign for simultaneous observation of mesopause region temperature and wind The first 80-hour continuous lidar campaign for simultaneous observation of mesopause region temperature and wind

Mar 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003georl..30f..52s&link_type=abstract

Geophysical Research Letters, Volume 30, Issue 6, pp. 52-1, CiteID 1319, DOI 10.1029/2002GL016412

Physics

13

Meteorology And Atmospheric Dynamics: Mesospheric Dynamics, Meteorology And Atmospheric Dynamics: Waves And Tides

Scientific paper

The Colorado State Sodium lidar has been upgraded to a two-beam system capable of simultaneous measurement of mesopause region temperature and winds, day and night, weather permitting. This paper reports the initial result of the first campaign, conducted in April 2002, with a total of 145 hours of observation including an 80-hour continuous data acquisition of temperature and zonal wind. The contour plots of the continuous data set show considerable coherence and activities of upward propagating waves, with a maximum day-night difference of 15.5 m/s in zonal wind at 88 km and of 10 K in temperature at 92 km. Oscillations at periods of 10-hour in temperature and 16-hour in zonal wind, implicating nonlinear interactions, can be identified. Decomposition of the time series into tidal periods, resulted in very good agreement with the GSWM00 predictions of diurnal tide. The observed altitude dependence in diurnal amplitudes and phases is consistent with the presence of a significant upward propagating wave, accompanying and modulating the main diurnal tide.

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