AMIP: Diagnostic subproject on the variability in the tropics: Synoptic to intraseasonal time scales
Conference
·
OSTI ID:6464768
- Lawrence Livermore National Lab., CA (United States)
- Reading Univ. (United Kingdom). Dept. of Meteorology
- European Centre for Medium-Range Weather Forecasts, Reading (United Kingdom)
The aim of this subproject is to evaluate the ability of GCMs to simulate the transient component of tropical convection and to increase our understanding of the possible processes that govern the development, propagation and dissipation of synoptic disturbances and the intraseasonal oscillation. A pilot study of the tropical variability in a high resolution version of the ECMWF model has already shown that a GCM may have considerable skill in simulating the observed distribution and periodicities of tropical disturbances (Slingo et al. 1993). Verification of the model results will involve satellite data and NWP analyses. In particular, a similar study of the observed intraseasonal oscillation using EC analyses, being carried out as part of the Joint Diagnostics Project at Reading University (Hoskins et al. 1989), will form an important part of the verification of this subproject. In this paper we present a preliminary evaluation of the intraseasonal oscillation as simulated by the ECMWF model. This simulation, with a horizontal resolution of T42 (approximately 2.8[degrees]), was performed at Lawrence Livermore National Laboratory on behalf of the European Centre for Medium-Range Weather Forecasts.
- Research Organization:
- Lawrence Livermore National Lab., CA (United States)
- Sponsoring Organization:
- DOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 6464768
- Report Number(s):
- UCRL-JC-112366; CONF-9210334--1; ON: DE93009287
- Country of Publication:
- United States
- Language:
- English
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