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RISVHF Radar Observations of Gravity-Wave Production by Cold Fronts over Southern Australia
Publisher: American Meteorological Society
Abstract: Four extended observational campaigns were conducted during August and November 1988 with an ST (stratosphere?troposphere) radar in southern Australia during the passage of cold fronts over the system, giving around 30 ...
A Climatology of Gravity Wave Motions in the Mesopause Region at Adelaide, Australia
Publisher: American Meteorological Society
Abstract: A statistical study of gravity wave motions in the mesosphere and lower thermosphere measured with a MF partial reflection radar located at Buckland Park new Adelaide (35°S, 138°E) in the period November 1933 to December ...
Mesospheric Momentum Flux Studies at Adelaide, Australia: Observations and a Gravity Wave–Tidal Interaction Model
Publisher: American Meteorological Society
Abstract: We present here the results of an analysis of gravity wave momentum fluxes in the mesosphere and lower thermosphere, inferred using a dual-beam Doppler radar near Adelaide, Australia during June 1984. Our analysis reveals ...
Estimation of Gravity Wave Momentum Flux and Phase Speeds from Quasi-Lagrangian Stratospheric Balloon Flights. Part I: Theory and Simulations
Publisher: American Meteorological Society
Abstract: A methodology for estimating gravity wave characteristics from quasi-Lagrangian observations provided by long-duration, superpressure balloon flights in the stratosphere is reviewed. Wavelet analysis techniques are used ...
Latitudinal Variations Observed in Gravity Waves with Short Vertical Wavelengths
Publisher: American Meteorological Society
Abstract: Knowledge of the latitudinal variations in the occurrence of gravity waves is important for their parameterization in global models. Observations of gravity waves with short vertical scales have shown a pronounced peak in ...
A General Approach to the Retrieval of Raindrop Size Distributions from Wind Profiler Doppler Spectra: Modeling Results
Publisher: American Meteorological Society
Abstract: A technique is described that allows estimates of the raindrop size distribution to be obtained from the Doppler spectra measured by wind-profiling radars. The method makes no a priori assumptions regarding the shape of ...
The Retrieval of Ice Particle Size Information from VHF Wind Profiler Doppler Spectra
Publisher: American Meteorological Society
Abstract: Recently, the authors observed significant echoes from precipitating ice particles above the freezing level in the stratiform region of tropical squall lines with a 50-MHz wind-profiling radar. A technique is described ...
An Algorithm for the Detection of Fronts in Wind Profiler Data
Publisher: American Meteorological Society
Abstract: An algorithm to detect frontal zones in time?height cross sections of horizontal wind from wind profiler measurements is described. The algorithm works by identifying regions with 1) a strong horizontal temperature gradient, ...
Estimation of Gravity Wave Momentum Flux and Phase Speeds from Quasi-Lagrangian Stratospheric Balloon Flights. Part II: Results from the Vorcore Campaign in Antarctica
Publisher: American Meteorological Society
Abstract: The stratospheric gravity wave field in the Southern Hemisphere is investigated by analyzing observations collected by 27 long-duration balloons that flew between September 2005 and February 2006 over Antarctica and the ...
Raindrop Size Distribution Retrievals from a VHF Boundary Layer Profiler
Publisher: American Meteorological Society
Abstract: The retrieval of raindrop size distributions (DSDs) in precipitation using boundary layer wind profiler operating at VHF is described. To make the retrievals, a Fourier transform?based deconvolution technique, optimized ...