Short-period mesospheric gravity waves and their sources at the South Pole
نویسندگان
چکیده
منابع مشابه
Lidar studies of interannual, seasonal, and diurnal variations of polar mesospheric clouds at the South Pole
[1] Polar mesospheric clouds (PMC) were observed by an Fe Boltzmann temperature lidar at the South Pole in the 1999–2000 and 2000–2001 austral summer seasons. We report the study of interannual, seasonal, and diurnal variations of PMC using more than 430 h of PMC data. The most significant differences between the two seasons are that in the 2000– 2001 season, the PMC mean total backscatter coef...
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Observations made with the co-located Rayleigh lidar and MST radar systems at Aberystwyth (52.4°N, 4.1°W) in Wales and radiosondes from Valentia (51.9°N, 10.2°W) in Eire are used to investigate the changes in the vertical propagation of gravity waves during periods of 4 days in June 1995 and February 1993. In each month, the lidar observations show that the wave activity in the upper stratosphe...
متن کاملLidar Observations of Polar Mesospheric Clouds at South Pole: Diurnal Variations
Polar mesospheric clouds (PMCs) were observed by a ground-based Fe Boltzmann temperature lidar for 65 h on 17-19 and 24-26 January 2000 above the geographic South Pole. The mean PMC backscatter ratio, volume backscatter coetficient, total backscatter coetficient, layer centroid altitude, and layer rms width are 53.5, 2.9x10 -9 m-Xsr -x, 4.3x10 -6 sr -x, 85.37 km, and 0.78 km, respectively. Stro...
متن کاملLidar Observations of Polar Mesospheric Clouds at South Pole: Seasonal Variations
Polar mesospheric clouds (PMCs) were observed above the geographic South Pole by an Fe Boltzmann temperature lidar from 11 Dec 99 to 24 Feb 00. During this 76-day period 297 h of observations were made on 33 different days and PMCs were detected 66.5% of the time. The mean PMC peak backscatter ratio, peak volume backscatter coefficient, total backscatter coefficient, layer centroid altitude, an...
متن کاملThe period - doubling of gravity - capillary waves
In this paper an attempt is made to explain the period-doubling of wind-generated gravity-capillary waves as observed in the experimentofChoi (1977). It is conjectured that period-doubling is closely related to the phenomenon of second-harmonic resonance. In order to obtain a simple dynamical model, results of McGoldrick (1970) and Simmons (1969) are extended to include the effect of wind input...
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ژورنال
عنوان ژورنال: Atmospheric Chemistry and Physics
سال: 2017
ISSN: 1680-7324
DOI: 10.5194/acp-17-911-2017