Global Parameterization of Gravity Wave Temperature Perturbations for Chemical and Microphysical Models
Abstract
The role of dissipating gravity waves in driving larger-scale circulations in the stratosphere is now well appreciated. Since gravity waves are still subgrid-scale processes in most global stratospheric models, considerable effort has been devoted to developing parameterizations of stratospheric gravity waves for them. Some parameterizations deal with large-amplitude waves generated from specific sources, such as mountains [e.g., Palmer et al., 1986] or convection [e.g., Kershaw, 1995]. Others parameterize the spectral evolution of the multi-wave fields more typically observed in the atmosphere away from source regions [e.g., Fritts and Lu, 1993; Hines, 1997]. It has become clear recently that gravity wave temperature perturbations can have significant effects on microphysics and chemistry [e.g., Jensen and Toon, 1994; Meilinger et al., 1995; Murphy and Gary, 1995; Carslaw et al., 1998; Bacmeister et al., 1998]. To include these influences within global models, effective parameterizations of the subgrid-scale temperature variability produced by gravity waves must also be developed. Here, we report of some recent efforts to parameterize various types of gravity-wave temperature perturbations, in forms that can be implemented relatively easily into global models of stratospheric microphysics and/or chemistry.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1998
- Accession Number
- ADA530490
Entities
People
- Julio T. Bacmeister
- Stephen D. Eckermann
Organizations
- United States Naval Research Laboratory