Devapriyo Das
November 11, 2025
UNEP and Ramboll partner to tackle the threat of urban heating
Ramboll joins the UNEP-led Beat the Heat program at COP30, the UN Climate Change Conference, aiming to address the challenges of extreme heat through sustainable cooling solutions. The cities of New York and Copenhagen take a lead role in rolling out the initiative.
Beat the Heat is a joint initiative of the COP30 Presidency and the United Nations Environment Programme’s Cool Coalition. The initiative operationalises the Global Cooling Pledge, the world’s first collective commitment to reduce cooling-related emissions by 68% and expand access to sustainable cooling by 2050, through local delivery.
As part of Beat the Heat, Ramboll announced a new digital tool to enable cities to calculate and address the impacts of flooding and urban heating through nature-based solutions, as well as the effects of the mitigation actions proposed. The tool is unique in its to calculate these impacts simultaneously and significantly faster than with traditional tools currently available. Further, it can be used to analyse both data rich urban areas in cities in Europe and North America, as well as in emerging economies where data about urban areas is sometimes scarce.
“We want to help cities make a convincing business case for climate adaptation, specifically those leaning on nature-based solutions,” explains Christian Nyerup Nielsen, global division director for climate resilience, at Ramboll. “When you show a clear vision for climate adaptation at urban scale, combined with a strong business case, then you have a greater chance of attracting investment into nature-based solutions.”
By enabling real time calculations and impact measurement, the tool will help stakeholders more rapidly gain a picture of the changes they want to see at urban scale, Nielsen explains. “You are literally drawing up the future footprint of a city, with its parks, green streets, cooling solutions, and immediately seeing the effect. In turn, this could help accelerate the investments attracted into the proposed solutions.”
The tool is funded by a grant of DKK 1.18 million by the Ramboll Foundation, the owner of Ramboll. The Ramboll Foundation has previously funded the research behind the tool with DKK 1.7 million in 2022.
"Helping convene partners such as the UN, C40 Cities, and Ramboll to increase our collective impact is immensely meaningful,” says Asbjørn Kristensen Høgsbo, head of philanthropy at the Ramboll Foundation. “This project is a great example of collaboration across research, business, NGOs, cities, and international organisations that will help scale sustainable climate adaptation. The Ramboll Foundation is pleased to engage and support with real positive change on people, nature, and society."
"Beat the Heat brings cooling solutions to where they’re needed most – protecting lives, livelihoods, and the liveability of cities as temperatures rise,” says Lily Riahi, head of Cool Coalition Secretariat, UNEP. “Through practical steps like heat assessments, passive cooling, and sustainable procurement, cities are taking action – and together with partners we’re helping them make it happen.
Our approach uniquely links sustainable cooling with heat adaptation, backed by strong multilevel governance and the Global Cooling Pledge. We aim to work closely with national governments and cities to enable replication – just as we are doing in India, where a $1.5 billion disaster fund is being redesigned to support passive cooling and cold chains.
Partnering for a largescale roll-out
Ramboll, C40 Cities, and UNEP are partnering to roll out the tool, leveraging their institutional knowledge and networks with large number of cities worldwide that are facing climate impacts. The tool will initially be tested with public and private sector stakeholders in Copenhagen and New York, as these cities are frontrunners in planning and implementing climate resilience and adaptation initiatives. There will be a particular focus to the inclusion and representation of youth in the roll out of the tool, to support and encourage careers that lean heavily on nature based solutions to fight climate change.
Ramboll has been a catalyst for climate adaptation in both cities, including Copenhagen’s cloudburst management plans and projects, and blue-green infrastructure projects in New York that integrate engineering, architecture and landscape designs, including parks and recreational areas, to solve challenges related to water.
About the tool
- Built on Ramboll’s four-step methodology for climate adaptation: Co-explore climate risk, Co-create resilience visions, Co-evaluate systemic impact, Co-cultivate resilience pathways.
- Unique in integrating calculations about impacts of flooding and urban heating into one model
Ramps up calculation speed by up to 10,000 times as compared with traditional tools that are currently available. - Nature-based solutions are climate adaptation solutions inspired and supported by nature, which are cost-effective, provide environmental, social, and economic benefits, and help build resilience.
Read about Ramboll’s partnership with UNEP, UNICEF and ILO in the Green Jobs for Youth Pact.
Read about Ramboll’s role in supporting the Ramboll Foundation’s strategic partnership with C40 Cities to shape resilient cities.
Want to know more?
Christian Nyerup Nielsen
Global Service Line Director, Water Climate Adaptation
Thomas Frøyland
Global Head of Stakeholder Relations
Asbjørn Kristensen Høgsbro
Head of Philanthropy
+45 61 24 63 69