Estimation of radial wind velocity for the non-Gaussian statistics of the Doppler lidar signal in the turbulent atmosphere

2011 ◽  
Author(s):  
Evgeniya A. Shelekhova ◽  
Alexander P. Shelekhov
Keyword(s):  
Wind Velocity ◽  
Turbulent Atmosphere ◽  
Doppler Lidar ◽  
Lidar Signal ◽  
Gaussian Statistics ◽  
Non Gaussian

Estimation of spectrum of Doppler lidar signal in a turbulent atmosphere

1994 ◽  
Author(s):  
Viktor A. Banakh ◽  
Igor N. Smalikho ◽  
Friedrich Koepp ◽  
Christian Werner
Keyword(s):  
Turbulent Atmosphere ◽  
Doppler Lidar ◽  
Lidar Signal

Statistics of a coherent lidar signal in a turbulent atmosphere

2013 ◽  
Vol 114 (2) ◽  
pp. 314-319 ◽  
Author(s):  
E. A. Shelekhova ◽  
A. P. Shelekhov
Keyword(s):  
Turbulent Atmosphere ◽  
Lidar Signal ◽  
Coherent Lidar

Extreme vertical drafts in the polar summer mesosphere: A super mesospheric bore?

2021 ◽  
Author(s):  
Jorge Luis Chau ◽  
Raffaele Marino ◽  
Fabio Feraco ◽  
Juan M. Urco ◽  
Gerd Baumgarten ◽  
...  
Keyword(s):  
Gravity Waves ◽  
Extreme Event ◽  
Ice Clouds ◽  
Wind Variability ◽  
Near Space ◽  
The Earth ◽  
Radar Echoes ◽  
Gaussian Statistics ◽  
Non Gaussian ◽  
Impact Planning

<p>The polar summer mesosphere is the Earth’s coldest region, allowing the formation of mesospheric ice clouds, potentially linked to climate change. These clouds produce strong radar echoes that are used as tracers of mesospheric dynamics. Here we report the first observations of extreme vertical drafts in the mesosphere, characterized by velocities larger than 40 m/s, i.e., more than five standard deviations larger than the observed wind variability. The morphology seems to resemble mesospheric bores, however the scales observed are much larger. Powerful vertical drafts, intermittent in space and time, emerge also in direct numerical simulations of stratified flows, predicting non-Gaussian statistics of vertical velocities. This evidence suggests that mesospheric bores might result from the interplay of gravity waves and turbulent motions. Our extreme event is interpreted as a mesospheric "super-bore", impacting mesospheric mixing and ice-formation, and would potentially impact planning of sub-orbital flights, and the investigation of biological material in the near space.</p>

Adaptive parametric algorithms for processing coherent Doppler-lidar signal

1999 ◽  
Vol 37 (6) ◽  
pp. 2678-2691 ◽  
Author(s):  
J.-L. Zarader ◽  
A. Dabas ◽  
P.H. Flamant ◽  
B. Gas ◽  
O. Adam
Keyword(s):  
Doppler Lidar ◽  
Lidar Signal ◽  
Coherent Doppler Lidar ◽  
Parametric Algorithms
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