HR: 08:30h
AN: A41B-03    [Abstracts]
TI: OLAM: A new Generation Earth System Model
AU: * Walko, R L
EM: robert.walko@duke.edu
AF: Dept of Civil and Environmental Engineering, Duke University, 123 Hudson Hall, Durham, NC 27708-0287 United States
AU: Avissar, R
EM: avissar@duke.edu
AF: Dept of Civil and Environmental Engineering, Duke University, 123 Hudson Hall, Durham, NC 27708-0287 United States
AB: The Ocean-Land-Atmosphere Model (OLAM) is a multi-scale numerical simulation model developed at Duke University to investigate a wide range of phenomena important to weather, climate, and the ecosystem, from global to local scales. The model is based largely on the Regional Atmospheric Modeling System (RAMS) but has been extended to global coverage and contains several innovative improvements. Like RAMS, OLAM may be configured with any number of nested grids to achieve arbitrarily high resolution wherever desired. Physical parameterizations for radiative transfer, microphysics, turbulence, cumulus parameterization, and land surface energy and water budgets are adopted directly from RAMS and thus have a long history of development, testing, and verification. This overall approach to OLAM brings the best of sophisticated mesoscale modeling methods to a global model framework. This talk will highlight the major features of OLAM, focusing on new methods that were developed to achieve the design goals of the model. Examples of its performance for global and local simulations will be presented.
DE: 3329 Mesoscale meteorology
DE: 3337 Numerical modeling and data assimilation
DE: 3354 Precipitation (1854)
DE: 3319 General circulation
DE: 1620 Climate dynamics (3309)
SC: Atmospheric Sciences [A]
MN: 2004 AGU Fall Meeting