TEST Second UCCRN Assessment Report on Climate Change and Cities (ARC3.2) (2018)

Urban Climate Change Research Network (UCCRN) Second Assessment Report on Climate Change and Cities (ARC3.2)

Cynthia Rosenzweig, William Solecki, Patricia Romero-Lankao, Shagun Mehrotra, Shobhakar Dhakal, Somayya Ali Ibrahim

2018, Cambridge University Press

Citation: Rosenzweig, C., Solecki, W., Romero-Lankao, P., Mehrotra, S., Dhakal, S., & Ali Ibrahim, S. (Eds.). (2018). Climate Change and Cities: Second Assessment Report of the Urban Climate Change Research Network. Cambridge: Cambridge University Press. 

Click here to purchase a hardcopy of the ARC3.2 report, and see below to download.

The Urban Climate Change Research Network’s Second Assessment Report on Climate Change in Cities (ARC3.2) is the second in a series of global, science–based reports to examine climate risk, adaptation, and mitigation efforts in cities. The book explicitly seeks to explore the implications of changing climatic conditions on critical urban physical and social infrastructure sectors and intersectoral concerns. The primary purpose of ARC3.2 is to inform the development and implementation of effective urban climate change policies, leveraging ongoing and planned investments for populations in cities of developing, emerging, and developed countries. This volume, like its predecessor, will be invaluable for a range of audiences involved with climate change and cities: mayors, city officials and policymakers; urban planners; policymakers charged with developing climate change mitigation and adaptation programs; and a broad spectrum of researchers and advanced students in the environmental sciences.

‘The best science has illuminated major risks facing our planet, and as
mayors, we have heeded the call to tackle climate change head-on … ARC3.2 provides the critical knowledge base for city actions on climate change around the world.’ Anne Hidalgo, Mayor of Paris, from the Foreword

‘ARC3.2 presents cutting-edge scientific information on climate change mitigation and adaptation in cities. It offers detailed information to support policy-makers in making better, more information-informed decisions about how climate change affects public health, local infrastructures and the economy. … The remarkable ARC3.2 will make a difference in developing effective and efficient climate change mitigation and adaptation policies in cities.’ Eduardo Paes, Former Mayor of Rio de Janeiro and Former Chair of C40, from the Foreword

‘… the gold standard for science-based policymaking as we enter into the post-2015, climate change implementation era.’ James Nxumalo, Former Mayor of Durban, from the Foreword

‘… a great example of the benefit of interdisciplinary science-policy co-operation. … ARC3.2 will help to ensure our future cities enable us to live more sustainably and to be more resilient.’ Joan Clos, Former Executive Secretary of UN-Habitat and Former Mayor of Barcelona, from the Foreword

‘With the international community now galvanized to put the world on a climate safe pathway, the evidence is stacking up that cities have a key role to play. The second edition of the ARC3 report from the Urban Climate Change Research Network provides a critical knowledge base for global cities as they respond to climate change challenges and seize the economic opportunities of low carbon, climate resilient development. Leading mayors, through networks such as the C40, are learning from each other, exchanging ideas and thereby accelerating local action on the ground.’ Mark Watts, Executive Director, C40 Cities Climate Leadership Group

‘The Climate Change in Cities report zooms in at the city level, providing us with a wealth of local climate data. And what these data tell us is that if we are to overcome the climate change challenge, we need more than ever the concerted efforts of all levels of government, multilateral institutions, civil society and the business sector.’ Gino Van Begin, Secretary General, ICLEI-Local Governments for Sustainability



Table of Contents and List of Boxes




Chapter 1: Pathways to Urban Transformation
Chapter 2: Urban Climate Science
Chapter 3: Disasters and Risk in Cities

Part I — Cross-Cutting Themes

Chapter 4: Integrating Mitigation and Adaptation
Chapter 5: Urban Planning and Urban Design
Chapter 6: Equity, Environmental Justice, and Urban Climate Change
Chapter 7: Economics, Finance, and the Private Sector

Part II — Urban Ecosystems and Human Services
Chapter 8: Urban Ecosystems and Biodiversity
Chapter 9: Urban Areas in Coastal Zones
Chapter 10: Urban Health
Chapter 11: Housing and Informal Settlements

Part III — Urban Infrastructure Systems

Chapter 12: Energy Transformation in Cities
Chapter 13: Urban Transportation
Chapter 14: Urban Water Systems
Chapter 15: Urban Solid Waste Management

Part IV — Governance and Policy
Chapter 16: Governance and Policy

Conclusion: Transforming Cities



Annex 1: UCCRN Regional Hubs

Annex 2: Climate Projections for ARC3.2 Cities

Annex 3: Case Study Docking Station: Overview and Methods

Annex 4: Case Studies by Category

Annex 5: Case Study Annex


Appendices and Index

Appendix A: Glossary

Appendix B: Acronyms and Abbreviations

Appendix C: UCCRN Steering Group, ARC3.2 Authors, and Reviewers


For more information, please contact crr2@columbia.edu.


ARC3.2 Summary for City Leaders, launched at COP21 in Paris, 2015

The Urban CARC3.2 SCL Cover Pagelimate Change Research Network (UCCRN) released the ARC3.2 Summary for City Leaders of the Second UCCRN Assessment Report on Climate Change and Cities (ARC3.2) at the COP21 Climate Summit for Local Leaders in Paris City Hall on December 4, 2015.

The launch was held in a joint session with ICLEI-Local Governments for Sustainability, entitled “Science meets Policy for Transformative Action,” to promote the Transformative Actions Program (TAP).

The Transformative Action Program (TAP), launched and managed by ICLEI, is a 10-year initiative that aims to identify the most ambitious, cross-cutting and inclusive projects with the potential to transform the lives of their citizens. It is the result of an inclusive and cooperative effort by networks of local and subnational governments to accelerate implementations of climate action.

The ARC3.2 Report presents downscaled Climate Projections for approximately 100 cities and catalogues urban disasters and risks, along with the effects on human health in cities. ARC3.2 gives concrete solutions for cities in regard to mitigation and adaptation; urban planning and design; equity and environmental justice; economics, finance, and the private sector; urban sectors such as energy, water, transportation, housing and informal settlements, and solid waste management; and governing carbon and climate in cities. Other key topics include ecosystems and biodiversity, and urban coastal zones.

Download ARC3.2 Summary for City Leaders

Hi-res version: ARC3.2 Summary for City Leaders 

Lo-res version: ARC3.2 Summary for City Leaders  

UCCRN is dedicated to providing the information that city leaders–from government, the private sector, non-governmental organizations, and the community—need in order to assess current and future risks, make choices that enhance resilience to climate change and climate extremes, and take actions to reduce greenhouse gas emissions. The ARC3.2 Summary for City Leaders provides a broad synthesis of the latest scientific research on climate change and cities. It presents the majors findings and key messages on urban climate science, disasters and risk, urban planning and design, mitigation and adaptation, equity and environmental justice, economics, finance, and the private sector, urban ecosystems, urban coastal zones, public health, housing and informal settlements, energy, water, transportation, solid waste, and governance.

UCCRN Co-Director Dr. Cynthia Rosenzweig of NASA Goddard Institute for Space Studies and Columbia University’s Earth Institute said, “the ARC3.2 Summary for City Leaders tells cities what they need to know to succeed as climate change leaders, and provides climate change projections for 100 cities so they know what to expect.”

The Summary also presents five pathways to urban transformations that emerge throughout the ARC3.2 report, including:

These pathways provide a foundational framework for the successful development and implementation of climate change policies. UCCRN advocates for cities to immediately begin to act on climate, as nearly two-thirds of world’s population will live in cities by 2050.

For more on the release of ARC3.2 Summary for City Leaders visit: http://blogs.ei.columbia.edu/2015/12/04/cities-face-up-to-the-climate-challenge/

Development of the ARC3.2 Report

The UCCRN hosted the ARC3.2 International Initiating Workshop from September 17-19, 2013 at Columbia University in New York City. At the Initiating Workshop, over 115 participants from both developed and developing country cities gathered to define the content and structure of ARC3.2, set a timeline for writing, review, and publication, and develop extended outlines for the report.

The UCCRN ARC3.2 Midterm Authors Workshop took place from September 28-30, 2014 at The Crystal in London, and served as the midpoint ‘check-in’ as the Second Assessment Report on Climate Change and Cities (ARC3.2) heads towards publication in late 2015. Participants included 80 urban climate change experts, stakeholders, and practitioners from over 40 cities in Asia, Australia, Europe, Africa and the Americas. This report serves as a synopsis of the event and the key themes that emerged.