With around 80% of global greenhouse gas emissions directly or indirectly attributed to cities, attempts to mitigate climate change impacts must seriously consider urban carbon transformations. Two challenges are currently constraining urban planning decisions around decarbonisation.
Cities are thought to be associated with most of humanity's consumption of natural resources and impacts on the environment. Cities not only constitute major centers of economic activity, knowledge, innovation, and governance—they are also said to be linked to approximately 70% to 80% of global carbon dioxide emissions.
Progressive cities worldwide have demonstrated political leadership by initiating meaningful strategies and actions to tackle climate change. However, the lack of knowledge concerning embodied greenhouse gas (GHG) emissions of cities has hampered effective mitigation.
A trans-national, multi-region input-output analysis for cities is presented.
The authors examine the carbon footprint network of ten cities.
The balance of emissions embodied in trade discloses a hierarchy of responsibility.
The authors model how emissions reductions spread through the city carbon networks.
Suburbs have naturally become a focal point of carbon mitigation for cities undergoing rapid suburbanization. This has created a debate over which urban form can more effectively lead to lower household carbon footprints (CF).
As global population and urbanization increase, so do the direct and indirect environmental impacts of construction around the world. Low-impact products, buildings, precincts and cities are needed to mitigate the effects of building construction and use. Analysis of embodied energy and greenhouse gas (GHG) emissions across these scales is becoming more important to support this direction.