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Title: An example of climate-relevant processes unresolved by present-day general-circulation models
Authors: Beniston, Martin
Pérez Sánchez, J.
UNESCO Clasification: 2502 Climatología
Keywords: Pollution
Issue Date: 1992
Journal: Environmental Conservation 
Abstract: A numerical study has been undertaken with a mesoscale atmospheric model to investigate whether dynamic and thermodynamic perturbations induced by the presence of an island in a Trade-wind flow can be sufficiently important to warrant some form of representation as a subgrid-scale phenomenon in a General Circulation Climate Model.The study has shown that the processes in the lee of the island - wake and vortices - have a definite influence on atmospheric processes downwind of the island compared with an unperturbed situation in which no island is present. A General Circulation Model would not 'see' a small island within its coarse grid, and as a result the island-induced perturbations would not be perceived by such a model. Attempts to quantify the transports of heat and moisture by the wake-and-vortex system indicate that they may be of climatic relevance if they act on sufficiently long time-scales.
ISSN: 0376-8929
DOI: 10.1017/S0376892900030654
Source: Environmental Conservation [ISSN 0376-8929], v. 19 (2), p. 165-169, (Verano 1992)
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