Presentation on theme: "Program B: Water Sensitive Urbanism Nigel TAPPER (Monash University) Darryl LOW CHOY (Griffith University)"— Presentation transcript:
Program B: Water Sensitive Urbanism Nigel TAPPER (Monash University) Darryl LOW CHOY (Griffith University)
“This program focuses on the influence of urban and peri-urban configurations on resource flows across a range of landscape scales. It is applying green infrastructure and climate responsive design principles to water security, flood protection and the ecological health of terrestrial and aquatic landscapes from neighbourhood to whole-of-catchment level. The program aims to establish integrative socio-technical urban and regional planning and design processes that will deliver practical tools to improve resilience of Australian urban environments and their regional settings”. Key issues: Ecological values/Ecosystem services Planning /Design Socio-ecological landscapes Combining state-of-the-art science of climate change modeling, surface and sub-surface hydrology, streamwater ecology and chemistry, and urban climatology with the best new thinking on urban and regional planning, design and practice Program B: Water Sensitive Urbanism
Society Water Sensitive Urbanism Future Technologies Adoption Pathways B2 Planning, Design and Management to Protect and Restore Receiving Waters B3 Water Sensitive Urban Design and Urban Micro-climate B1 Catchment-scale Landscape Planning for Water Sensitive Cities in an age of Climate Change B4 Building Socio-technical Flood Resilience in Cities and Towns B5 Statutory Planning for Water Sensitive Urban Design
B1 – Catchment-scale Landscape Planning for Water Sensitive Cities with Climate Change
B1.1 Urban Rainfall in a Changing Climate (Cities as Water Supply Catchments) Bhupendra Raut 1, Lorenzo de la Fuente 1, Michael Reeder 1, Christian Jakob 1 and Alan Seed 2 1 School of Mathematical Sciences, Monash University 2 Centre for Australian Weather and Climate Rese arch, BOM
Project B1.1: Urban rainfall in a changing climate This project is: Providing rainfall projections at appropriate space/time scales to support planning and design decisions Providing quantitative estimates of the uncertainties in rainfall projections. Key outputs: Rainfall regimes determined for cities at 5km 2 scales for use by other Programs/projects. Regional model uncertainty Unpredictable scales Climate scenario uncertainty Global model uncertainty
Refine and complete regime analysis for the dynamical model simulations Refine the statistical model Test the entire downscaling chain (GCM, Dynamical Model, Statistical Model) for current climate Test leaving the regional model out of the chain Extend the model to future climates and CMIP5 Immediate Plans
The project is developing urban-scale projections of the future rainfall over the selected Australian cities with estimates of the uncertainty in these projections using a combination of dynamical downscaling and regime-dependent stochastic downscaling The approach quantifies how well the different observed synoptic patterns are simulated in the regional climate model, and whether the model correctly predicts the fraction of rainfall attributable to each class of weather pattern The statistical properties of each of the rainfall regimes can be determined from radar and rain gauges, and used to construct a multifractal cascade model of the rainfall distribution and its evolution Summary
B1.2 Catchment-scale landscape planning for water sensitive city-regions in an age of climate change Silvia Serrao-Neumann 1, Darryl Low Choy 1 and Steve Kenway 2 (still recruiting) 1 Urban Research Program, School of Environment, Griffith University 2 Advanced Water Management Centre, School of Chemical Engineering, University of Queensland
This project will: Derive a first order urban metabolism evaluation framework for the city region across urban, peri- urban and rural landscapes. Encapsulate this framework within a whole-of- landscape planning and management city-region model that links cities ecologically and hydrologically to their region whilst accommodating the assessment of urban growth adapted to climate change. Ground this inquiry in statutory and non-statutory regional (catchment) scale planning processes. Project B1.2: Catchment-scale Landscape Planning for Water Sensitive City-regions in an age of Climate Change Key outputs: Scenarios of plausible futures for rapidly growing metropolitan regions that adopt a whole of landscape regional scale outlook that links cities ecologically and hydrologically to their regions.
Urban Centre Dominant Urban Forces Strong Non-Urban Sector The Metropolitan Region Rural Landscapes The Peri-urban Landscapes Landscape Scale (Human use and occupation) Biophysical environment Socio- ecological systems Socio-economic environment “…an area, as perceived by people, whose character is the result of the actions and interactions of natural and/or human factors” (Selman, 2006: 6) Zone of Resilience Interests
Peri-urban Demands Urban Demands Environmental Demands Rural Demands Cultural Demands Outdoor Recreation Values Cultural Heritage Values Scenic Amenity Values Rural Production Values Biodiversity Values Indigenous Values Ecosystem Services Habitation Values Regional Landscape Values Demands on the Regional Landscape Water: a linking element in the Landscape for “joined-up” planning
Future Population in a changing Climate “n” yrs Towards a Conceptual Model for a Resilient “Water Sensitive” Metropolitan Region Modified Mass Balance & Urban Metabolism Model Precipitation Present Population Quantity Quality Flooding Open Space system evapotranspiration Total Water in the metropolitan regional system GroundwaterRecycled water Stored water Surface water Ecosystem Services CarbonEnergy Water Adapted Mass Balance & Urban Region Metabolism Model ?
Roles of Water in the Metropolitan Region Water functions as a: Element in the landscape contributing to landcsape values (aesthetical, recreational, tourism, cultural, ecological, hydrological and natural resources) Process and agent of change Commodity and product Conductor and transporter of goods, materials and energy (and other flows) What is the managerial connection between these roles?
Statutory Vs Non Statutory Statutory Planning Regime Non Statutory Planning Regime) Regional & Local Planning Mandates Voluntary Requirements (GI) Statutory Requirements (GI) Avenues to Incorporate Science into Planning MandatoryOptional Alternative Metabolic Futures (urban form, density, GI investment, climate)