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Abstract:It is now possible to generate large quantities of sky view factor (SVF) values due to advances in digital techniques for calculating SVF from hemispherical images. Coupling image acquisition with Global Positioning System (GPS) data now enables transects to be accurately placed, enabling site-speci®c SVF analysis in relation to street geometry. This paper examines SVF transects through four land cover classes. The ®ndings indicate that although SVF averages are distinctly different in each of the land cover types, an average SVF value for a particular land use type is not a suf®cient estimate at street resolution.*

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Interdecadal variability in north-east Australian regional tropical cyclone formation is investigated. It is found that mean tropical cyclone formation is signi®cantly higher during positive phases of the Interdecadal Paci®c Oscillation (IPO) than during negative phases. This is related to changes in vertical wind shear in the north-east Australian region.*