Advisor

Aslam Khalil

Date of Award

Spring 1-1-2012

Document Type

Thesis

Degree Name

Master of Science (M.S.) in Physics

Department

Physics

Physical Description

1 online resource (vii, 43 p.) : ill. (chiefly col.), col. maps

Subjects

Cesm, Methane, Ozone, Global temperature changes -- Research, Ozone layer, Atmospheric methane -- Observations

DOI

10.15760/etd.547

Abstract

The Community Earth System Model (CESM) is a coupling of five different models which are combined to simulate the dynamic interactions between and within the Earth's atmosphere, ocean, land, land-ice, and sea-ice. In this work, the installation and testing of CESM on Portland State University's Cluster for Climate Change and Aerosol Research (CsAR) is described and documented, and two research applications of the model are performed. First, the improved treatment of cloud microphysics within recent versions of CESM's atmospheric module is applied to an examination of changes in shortwave cloud forcing (SWCF) and results are compared to output from older versions of the model. Second, the CESM model is applied to an examination of the effect that increased methane (CH4) concentrations have had on the catalytic destruction of stratospheric ozone (O3) by ozone depleting compounds (ODCs) such as chlorofluorocarbons (CFCs) and nitrous oxide (N2O).

Description

Portland State University. Dept. of Physics

Persistent Identifier

http://archives.pdx.edu/ds/psu/8489

Share

COinS