The Climate City. Группа авторов

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       Peter Boyd

      For cities to truly lead on climate change – a just transition to “Net-Zero” and beyond – high ambition needs to be coupled with high clarity of vision and a multidimensional, connected-leadership approach with an appreciation and embrace of systems thinking.

      Ambitious Citizens in Ambitious Cities

      If cities are to truly take the lead in combatting climate change, we need an ambitious city with purpose-driven city leaders to accelerate a just transition to a sustainable future. We need them to help define the city’s goals and for individual ambition to inform and feed into collective ambition for a city we all want to live in, and where we think our children and grandchildren will in turn want to stay or return to.

      Figure 1.2 If you don’t know where you are going any road will take you there. (Source: EllerslieArt/Adobe Stock.)

      To achieve this necessary climate goal while managing all the other priorities of the complex modern city, we need leaders that are truly connected: to themselves; to the team around them; to their communities and stakeholders; and to an awareness and appreciation of the entire system they are trying to manage and change.

      What could this look like? A city would have a bold, clear, co-created goal that the city leadership, community leaders, and citizens readily understand and support. A city’s climate action plan would target a fully scoped, science-based, Paris-Agreement-compliant, cumulative “Net-Zero” well before 2050; and it would do so in a way that also makes the city greener, more equitable, more resilient, smarter, friendlier, healthier, and all the other qualities to be examined in later chapters.

      And just as Maya Angelou told us as individuals to “Be yourself, only better”, cities will have achieved this in a variety of complex, adaptive, ingenious ways – peculiar to their own unique assets and their own unique, ambitious citizens.

      Cities: The Need for Ambition and Clarity

      Cities have been hives of ambition since they were first created. Birthed by the ambitious, they have attracted like minds in search of their fortune, of significance, of life’s meaning, and much more. Today, we need these hives of ambition to assume leadership of the just transition to a sustainable world.

      Reaching the goals of the 2015 Paris Agreement will require ambitious actions from all sectors and levels of our society, but especially in our cities. More than 55% of people already live in urban areas, and this is forecast to rise to 68% by mid-century.1 Urban areas account for more than 60–70% of the world’s greenhouse gas (GHG) emissions, consuming 66–78% of the world’s energy, while occupying less than 2% of the land.2 Even as we decouple economic growth from emissions – already achieved by over twenty countries before – the sheer scale of the amount of people living in cities means that climate leadership by cities requires ambition and talent at city-scale as much as ever before in history.

      Figure 1.3 The need for both ambition and clarity will drive success. (Source: Boyd, P. and Pickett, C., 2020. Climate Ambition: A Case for Net-Zero Clarity. Yale Center for Business and the Environment. https://cbey.yale.edu/research/defining-net-zero.)

      As I’ve argued with co-author Casey R. Pickett in a recent paper3 – from which this paper draws – we need a consistent definition of “Net-Zero” that cities (and organizations, companies, and countries) can use and measure progress against. If we are to maximize the probability of a just transition to a sustainable society, all actors have to explain what they mean by “net-zero” in addition to their intended deadlines and paths. We suggest four measurable criteria for any undertaking of “net-zero” to be worthy of capitalizing to “Net-Zero”.

      In a refreshed and robust definition, a strategy for “Net-Zero” GHG emissions earns its capital letters if it is: Fully Scoped, Science-Based, Paris-Agreement-Compliant, and Cumulative. Each descriptive term imparts a dimension of clarity. “Net-Zero” can be a powerful and useful goal at the city level if the city embraces a concept of “Net-Zero” that is:

      1 Fully Scoped: articulating the city’s defined scope of responsibility. This should include all GHG emissions from scope 1 (GHG emissions from sources located within the city boundary); scope 2 (GHG emissions occurring as a consequence of the use of grid-supplied electricity, heat, steam, and/or cooling within the city boundary); and scope 3 (all other GHG emissions that occur outside the city boundary as a result of activities taking place within the city boundary).4

      2 Science-Based: incorporating a destination-based5 target for “Net-Zero” that demonstrates the city is assuming bold, appropriate responsibility for emissions

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