Modeling of trace constituent transport with the University of Wisconsin global isentropic-sigma model
The main goal of this report is to demonstrate the ability of the University of Wisconsin (UW) hybrid isentropic-sigma ({theta}-{sigma}) model for global NWP, especially the global distribution of precipitation and simulating the long-range transport of an inert trace constituent. Results from this prototype climate model are compared against the results of a nominally identical global {sigma} model in order to establish the relative advantages and disadvantages of each coordinate system for simulating long-range transport processes. The current work is an extension of works by Johnson et al. and Zapotocny et al. The first study used analytically specified initial conditions for {theta}-{sigma} and {sigma} coordinate channel models, the second study incorporated observed data into regional versions of both models, while the third study documented the first global results with the UW {theta}-{sigma} model. Section 2 of this report describes additions to the UW {theta}-{sigma} model since the Zapotocny et al. study, Section 3 evaluates a five day precipitation forecast produced by the UW {theta}-{sigma} model and presents a comparison of each model`s ability to prognostically simulate and conserve an inert trace constituent. A summary is presented in Section 4.
- Research Organization:
- Wisconsin Univ., Madison, WI (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG02-92ER61439
- OSTI ID:
- 10154186
- Report Number(s):
- CONF-940115-32; ON: DE94012729; BR: KP0500000; TRN: AHC29412%%15
- Resource Relation:
- Conference: 8. Joint conference on applications of air pollution meterology. 74. American Meteorological Society annual meeting,Nashville, TN (United States),23-28 Jan 1994; Other Information: PBD: [1994]
- Country of Publication:
- United States
- Language:
- English
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