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Cities and networks play an important role in climate change mitigation. Various international, regional, and local networks seek to increase cooperation between cities or between cities and other stakeholders. However, we still have a poor understanding of how these formalised networks help cities to mitigate climate change at different levels of urban climate governance. Here, I analyse experiences of participation in formal climate change mitigation-related networks from the global to the local level in three European capital cities: Helsinki, Madrid, and Stockholm. As multilevel networking is a strategic tool for cities, different benefits are highlighted at different levels of governance. Some networks are more oriented towards politics and planning, while others are more practical. Formalised networking is also networking between individual people, which should be studied further. The results demonstrate both the advantages of networks and challenges in developing beneficial networking to support climate change mitigation. [ABSTRACT FROM AUTHOR]

This paper sheds light on what city leaders can do about climate change in the context of the complex extra-territorial challenges they face. We created an original database of those actions implemented by members of the C40 Cities Climate Leadership Group and investigated which boundary organizations, objects and experiences ('boundary cooperative arrangements') can be triggered to undertake climate change actions by city leaders. Through a secondary qualitative analysis, we identified six main actions. The research advances knowledge on both place leadership and collaborative governance, and the findings represent a tool for better tackling the 'wicked problem' of climate change. [ABSTRACT FROM AUTHOR]

The rising importance of cities, states and regions, firms, investors, and other subnational and non-state actors in global and national responses to climate change raises a critical question: to what extent does this climate action deliver results? This article introduces a conceptual framework that researchers and practitioners can use as a template to assess the progress, implementation, and impact of climate action by sub- and non-state actors. This framework is used to review existing studies that track progress, implementation, and achievement of such climate action between 2014 and mid-2019. While researchers have made important advances in assessing the scope and future potential of sub- and non-state climate action, we find knowledge gaps around ex-post achievement of results, indirect impacts, and climate action beyond the realm of greenhouse gas reductions. Key policy insights While we increasingly understand the scale, scope, and potential of climate action by sub- and non-state actors, we lack rigorous evidence regarding the results achieved and their broader impacts. More information on progress and impact is essential for the credibility of sub- and non-state climate action. Policymakers need to understand which approaches are working and which are not, promoting the diffusion of best practice and creating conditions for stronger action in the future. The proposed conceptual framework can be tailored and applied to a wide range of initiatives that target mitigation, adaptation, and other spheres of climate action. By providing a template to identify key elements of progress tracking and evaluation, the framework can help align both research and practitioner communities around the data and metrics required to understand the overall impact of climate action. [ABSTRACT FROM AUTHOR]

Overlaps between economic development, sustainability and climate change objectives have both political and practical implications for the development of policies addressing climate change mitigation and adaptation. However, little empirical research has systematically investigated factors underlying these overlaps. Here, survey responses from 287 cities in the US are used to explore associations between the presence of such overlaps and these cities’ policy actions and contextual conditions. Patterns in the presence of these overlaps are described, which help shed light on the political economy underlying policymakers’ considerations about overlapping climate change mitigation and adaptation considerations with economic development or sustainability. Policymakers’ considerations about the possible political co-benefits and political trade-offs of these objective overlaps will play a critical role in shaping interconnected policy responses to complex challenges like climate change in the years ahead. [ABSTRACT FROM AUTHOR]

A growing body of literature suggests that an economic case may exist for investment in large-scale climate change mitigation. At the same time, however, investment is persistently falling well short of the levels required to prevent dangerous climate change, suggesting that economically attractive mitigation opportunities are being missed. To understand whether and where these opportunities exist, this article contrasts macro-level analyses of climate finance with micro-level bottom-up analyses of the scale and composition of low-carbon investment opportunities in four case study developing world cities. This analysis finds that there are significant opportunities to redirect existing finance streams towards more cost-effective, lower-carbon options. This would mobilize substantial new investment in climate mitigation. Two key explanations are proposed for the failure to exploit these opportunities. First, the composition of cost-effective measures is highly context-specific, varying from place to place and sector to sector. Macro-level analyses of climate finance flows are therefore poor indicators of the micro-level landscape for low-carbon investment. Specific local research is therefore needed to understand the opportunities for cost-effective mitigation at that level. Second, many opportunities require enabling governance arrangements that are not currently in place. Mobilizing new low-carbon investment and closing the ‘climate finance gap' therefore requires attention to policy frameworks and financing mechanisms that can facilitate the exploitation of cost-effective low-carbon options. Policy relevance The importance of increasing investment in climate mitigation, especially in developing nations, is well established. This article scrutinizes four city-level studies of the scope for cost-effective low-carbon investment, and finds that significant opportunities are not being exploited in developing world cities. Enabling governance structures may help to mainstream climate considerations into investments by local actors (households, businesses and government agencies). While climate finance distributed through international bodies such as the Green Climate Fund may not always be a suitable vehicle to invest directly in disaggregated, local-level measures, it can provide the incentives to develop these governance arrangements. [ABSTRACT FROM PUBLISHER]

Urbanisation is truly a global phenomenon. Starting at 39% in 1980, the urbanisation level rose to 52% in 2011. Ongoing rapid urbanisation has led to increase in urban greenhouse gas (GHG) emissions. Urban climate change risks have also increased with increase in climate-induced extreme weather events and more low-income urban dwellers living in climate sensitive locations. Despite increased emissions, including GHGs and heightened climate change vulnerability, climate mitigation and adaptation actions are rare in the cities of developing countries. Cities are overwhelmed with worsening congestion, air pollution, crime, waste management, and unemployment problems. Lack of resources and capacity constraints are other factors that discourage cities from embarking on climate change mitigation and adaptation pathways. Given the multitude of problems faced, there is simply no appetite for stand-alone urban climate change mitigation and adaptation policies and programmes. Urban mitigation and adaptation goals will have to be achieved as co-benefits of interventions targeted at solving pressing urban problems and challenges. The paper identifies administratively simple urban interventions that can help cities solve some of their pressing service delivery and urban environmental problems, while simultaneously mitigating rising urban GHG emissions and vulnerability to climate change. [ABSTRACT FROM PUBLISHER]

The assumption that climate mitigation can only be afforded at a particular level of income is implicit in global climate negotiations. This suggests that middle-income countries may reach a tipping point in their development process where low-carbon investment becomes more viable. In order to avoid dangerous levels of climate change, this tipping point needs to be brought forward in time: upper-middle-income countries are already responsible for 37.8% of global CO2emissions. We explore the scope for large-scale investment in climate mitigation in Johor Bahru, a fast-growing industrial city in Malaysia. We find that the city could reduce per capita emissions by 10.0% by 2025, relative to 2014 levels, through cost-effective investments. If the returns could be recovered and reinvested in low-carbon measures, Johor Bahru could reduce per capita emissions by 35.2% by 2025, relative to 2014 levels. This result suggests that the tipping point may be a function of political will and institutional capacity as well as income. This has substantial implications for global climate policy discussions, particularly the opportunities and responsibilities of middle-income countries. If comparable savings can be delivered across cities in middle-income countries, this would equate to a reduction in global emissions of 6.3% with the exploitation of cost-effective options and 11.3% with the exploitation of cost-neutral options. Investing in economically attractive low-carbon measures could also provide cities in middle-income countries with an opportunity to build the political momentum and institutional capacities necessary for deeper decarbonization. [ABSTRACT FROM AUTHOR]

In this paper, we reflect on the role of cities in responding to climate change over the two decades since the historic agreement of the United Nations Framework Convention on Climate Change. We find a growth in the scale and nature of municipal responses to climate change that has been one of the most significant features of the changing climate governance landscape over the past two decades. We suggest that this has not been a static or uniform process, and reflect on the changing nature of urban responses to climate change over the past two decades, the emergence of new politics of low-carbon urbanism, and challenges that lie ahead for research and policy as this agenda begins to take shape on the ground. [ABSTRACT FROM PUBLISHER]