University of Illinois Urbana-Champaign

Study of Kelvin-Helmholtz Instability in the MST Region

Raizada, Kinshuk

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Description

Title
Study of Kelvin-Helmholtz Instability in the MST Region
Author(s)
Raizada, Kinshuk
Contributor(s)
  • Franke, Patricia
  • Kudeki, Erhan
Issue Date
2012-05
Keyword(s)
  • mesosphere
  • ionosphere
  • remote sensing
  • incoherent scatter radar
  • Kelvin-Helmholtz instability
Abstract
The purpose of this thesis is to examine where the Kelvin-Helmholtz Instability exists in the Mesosphere region and its effect on data interpretation. The instability exists as a turbulence which is evolving in time and experience horizontal and vertical advections. The concept is verified by comparing data collected from the Jicamarca Radio Observatory (JRO) in Peru to the simulation data available from the CoRA (Colorado Research Associates) and NWRA (North-West Research Association). To compare the data from the radar observatory and Colorado Research Association, the Line of Sight (LOS) velocity is calculated from the backscatters received in the experiments conducted in the Mesosphere, Stratosphere and Troposphere (MST) region. These LOS velocity profiles are compared with LOS velocities calculated from the simulation data that is computed from numerical simulations. This data is received courtesy of NWRA. Horizontal advections are introduced in the data to simulate the activities observed in the atmosphere to recreate the LOS velocity maps and Power Maps seen from the received signals from radar observatories. The results have been positive. Similar LOS velocity instances in the MST data were obtained from the JRO’s MST campaign as seen in the simulation results.
Type of Resource
text
Language
en
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http://hdl.handle.net/2142/46502

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