Gravity Wave/large-Scale Flow Interactions: A Comparison of Model Predication and Observation

These observed interaction signatures are then compared to the interaction signatures predicted by three commonly used gravity-wave parameterizations: critical level filtering, linear saturation filtering, and diffusive filtering. A one-dimensional, time-independent model filters various gravity-wave spectra using the criteria for each of these parameterizations. Background wind profiles for different times during the large-scale flow event are used to obtain filtered gravity-wave activity signatures that vary over time. In order to reproduce the observed interaction signature for both large-scale flow events, a broad spectrum released at 55 km was needed. These model results would indicate that the gravity waves that reach the mesosphere do not propagate from the troposphere, but are generated more locally.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Atmospheric Sciences

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2015

Author dc:creator

• Herman, Redina Lee

Contributors dc:contributor

• Robinson, Walter A.

• Physics, Atmospheric Science

Language dc:language

eng

Identifier

(MiAaPQ)AAI3101860

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/85958