Gravity wave activity in the upper mesosphere over Urbana, Illinois: lidar observations and analysis of gravity wave propagation models

1996 ◽  
Vol 58 (16) ◽  
pp. 1905-1926 ◽  
Author(s):  
Richard L. Collins ◽  
Xin Tao ◽  
Chester S. Gardner
Keyword(s):  
Wave Propagation ◽  
Gravity Wave ◽  
Wave Activity ◽  
Propagation Models ◽  
Lidar Observations

scholarly journals 11 Years of Rayleigh Lidar Observations of Gravity Wave Activity Above the Southern Tip of South America

2019 ◽  
Vol 124 (2) ◽  
pp. 451-467 ◽  
Author(s):  
P. Llamedo ◽  
J. Salvador ◽  
A. Torre ◽  
J. Quiroga ◽  
P. Alexander ◽  
...  
Keyword(s):  
South America ◽  
Gravity Wave ◽  
Wave Activity ◽  
Rayleigh Lidar ◽  
Lidar Observations

scholarly journals Rayleigh/Raman lidar observations of gravity wave activity from 15 to 70 km altitude over Syowa (69°S, 40°E), the Antarctic

2017 ◽  
Vol 122 (15) ◽  
pp. 7869-7880 ◽  
Author(s):  
Masaru Kogure ◽  
Takuji Nakamura ◽  
Mitsumu K. Ejiri ◽  
Takanori Nishiyama ◽  
Yoshihiro Tomikawa ◽  
...  
Keyword(s):  
Gravity Wave ◽  
Wave Activity ◽  
Raman Lidar ◽  
The Antarctic ◽  
Lidar Observations

scholarly journals Diagnosis of Local Gravity Wave Properties during a Sudden Stratospheric Warming

2017 ◽  
Author(s):  
Lena Schoon ◽  
Christoph Zülicke
Keyword(s):  
Wave Propagation ◽  
Gravity Wave ◽  
Wave Activity ◽  
Wave Number ◽  
Complex Signal ◽  
Unexpected Finding ◽  
Stratospheric Warming ◽  
Local Wave ◽  
The Hilbert Transform ◽  
A Minor

Abstract. Commonly, wave quantities are maintained in zonal mean averages. Hence, local wave phenomena remain unclear. Here, we introduce a diagnostic tool for studies of wave packets locally. The "Unified Wave Diagnosis" (UWaDi) uses the Hilbert Transform to obtain a complex signal from a real-valued function and estimates the amplitude and wave number locally. Operational data from the European Centre for Medium-Range Weather Forecasts is used to perform the analysis. Restrictions on gravity wave propagation due to model sponge layers are identified well above the 10 hPa altitude. From a minor stratospheric warming in January 2016 three cases for vertical gravity wave propagation in different background wind conditions are selected. It is shown that zonal mean wind quantities cannot reveal local "valves" allowing gravity waves to propagate into the mid-stratosphere. The unexpected finding of high gravity wave activity at the minor warming of 30 January 2016 is related to strong planetary wave activity and a strong local "pump". Accordingly, the advantages of a local wave packet analysis are demonstrated for profiles up to the model sponge layer.

Lidar observations of gravity wave activity and spectra in the mesopause region at Wuhan, China

1999 ◽  
Vol 42 (2) ◽  
pp. 192-197
Author(s):  
Yong Ai ◽  
Shu Lu ◽  
Xunjie Zhang ◽  
Shunsheng Gong
Keyword(s):  
Gravity Wave ◽  
Wave Activity ◽  
Mesopause Region ◽  
Lidar Observations
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