This research aims, firstly, to explore the capacity of different types of GI in providing cooling effects on urban microclimate and secondly, to identify what types, amounts and spatial distributi ons are more effective to reduce land surface temperatures in two Australian cities, Sydney and Melbourne. To achieve these aims there have been set the following specific objectives:
a. To elaborate a new classification scheme of GI to support climatological investigations.
b. To identify a set of functional, morphological and configurational indicators/metrics to quantify the cooling effects of GI in a more comprehensive way.
c. To propose a methodological framework combining airborne remote sensing, in-situ observations, and predictive modelling for a more precise and accurate evaluation of the thermal performance of GI at local scale and at very high spatial resolutions.
d. To propose a standardised GIS-based workflow that makes use of readily accessible data and can be replicated by researchers, practitioners and urban planners from novice to experts.
e. To provide practitioners and policy makers with a list of evidence-based guidelines, recommendations and design strategies to implement GI more effectively and to deliver cooler and more environmentally sustainable cities with greater confidence.
The importance of this research lies in the formulation of a methodological framework for the automated mapping and classification of GI as well as in the development of a statistical model to predict different thermal profiles of GI at a local scale. Additionally, the proposed method includes the estimation of evapotranspiration in highly heterogeneous urban contexts using a remote sensing approach. This is an important contribution to knowledge as this still remains unexplored in current literature. ... [more]