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Urban Heat Island heat-islands1 (Why are vulnerable populations…
Urban Heat Island
Why is the impact of increased temperatures not felt uniformly across the urban environment?
Uneven distribution of green space
Social Space access
Why are cities warmer than their surroundings?
What are the environmental determinants?
Why are existing urban ecosystems not mitigating the effects?
Building Material
Impermeable Concrete reduces water tables
Reduced Water tables negatively impacts vegetation health
Water runoff leaches chemicals into water supply
Concrete and Asphalt absorb heat
Climate Change related extreme weather
Why are existing urban social systems/structures not mitigating the impacts?
Aging Population
Reduced access to social and green spaces
Limited income
Mobility restrictions
Lack of "problem" visibility
Why are vulnerable populations disproportionately impacted?
High costs of cooling systems
Social Isolation
Lack of political representation
Large Public Park
Benefits
Easy to implement
Cooling effect
Room for flexible social spaces
Size ensures sustainability of ecosystem
Limitations
Limited social access
Cooling effects spatially limited
Spatially distant from vulnerable neighbourhoods
Increased Bluespace
Benefits
Improves water table levels
Improves vegetation health
Cooling effect/heat sink
Limitations
Does not support inclusive social spaces
Releases ambient heat at night
Cooling effect limited spatially
Green roofs and walls
Benefits
Able to reach multiple neighbourhoods
Creates spatially accessibly social spaces
Diffuses implementation responsibility and risk
Secondary benefit of limiting rain water runoff
Limitations
Requires stakeholder consensus
Limited size may not sustain vegetation health
Climate Change
Spatial Segration
Demographic Change
Social Space Access Barriers
Increasing Urbanisation