Editor’s Note: This article is part of a short series on creating resilient cities, sponsored by Siemens. Please join us for a live Google Hangout with Siemens and Arup on October 1, where we’ll talk about this issue live! RSVP here.
Climate change is not going away, so cities large and small must adopt resilient and collaborative strategies not only to cope with the mounting risks they face, but also to survive. It’s no longer a matter of picking and choosing what piece of crumbling infrastructure to repair with scarce funds this year or next — the entire urban organism has to deal with rising waters, super storms, health and food security, air and surface pollution, and increasing numbers of residents.
The stakes are even higher as populations worldwide increasingly cluster around urban areas. “The world is undergoing the largest wave of urban growth in history,” says the United Nations Population Fund. In 2008, for the first time, more than half of the world’s population lived in towns and cities.
Cities are on the front line of the changing climate
The Intergovernmental Panel on Climate Change says in its findings on the implications of climate change for cities: “Urban centers account for more than half of the world’s population, most of its economic activity and the majority of energy-related emissions. The role of cities in reducing emissions and protecting their inhabitants is therefore central to effective climate policies,” IPCC concluded.
Many emerging climate change risks are concentrated in urban areas, and climate change impacts on cities are increasing, IPCC continued. Key issues include rising temperatures, heat stress, water security and pollution, sea-level rise and storm surges, extreme weather events, heavy rainfall and strong winds, inland flooding, food security, and ocean acidification.
Due to the growth in urban populations, the number of people exposed to climate change risk is increasing: “Rapid urbanization in low- and middle income countries has already increased the number of highly vulnerable urban communities living in informal settlements, many of which are at high risk from extreme weather events.”
On the flip side, rapidly developing cities in industrializing countries may also have the “greatest potential for mitigating greenhouse gas emissions.” The problem is that many rapidly developing cities “lack the financial, technological, institutional and governance capacity required for effective mitigation,” IPCC said. That’s where the notion of resilience comes in big time, because “steps that build resilience and enable sustainable development in urban areas can accelerate successful climate change adaptation globally.” Resilient cities may be the solution. Click to continue reading »
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