In an effort to support cities to achieve a greener future, a new Urban Sustainability Framework (USF), launched today by the World Bank and the Global Environment Facility (GEF), serves as a guide for cities seeking to enhance their sustainability.
Launched at the ninth session of the World Urban Forum (WUF9)*, taking place February 7-13, in Kuala Lumpur, Malaysia, this guide supports cities along the sustainability pathway, from creating a vision to identifying financial resources to implement their plans.
The USF lays out six key dimensions of urban sustainability: governance and integrated planning, fiscal sustainability, economic competitiveness, environment and resource efficiency, low carbon and resilience, and social inclusiveness. The Framework is a collaboration among cities, organizations, and experts who have contributed to the development of the Framework.
“We are confident that through this collaboration, a shared vision and common approach to urban sustainable development can be forged. We invite cities to use the framework to meet the challenges they face today and in the coming decades, and we enthusiastically look forward to the collaborative efforts to adopt an integrated approach to urban sustainability,” said GEF CEO and Chairperson Naoko Ishii.
The new USF guidance document includes a “Four-Stage Approach” for cities to improve their sustainability status through the following process: defining a vision with priorities, determining financing, and, finally, monitoring and evaluating their project implementation progress.
“The USF assists cities to identify their sustainability aspirations and establish how they will finance their implementation plans. These two very important stages of the process go hand in hand,” said Ming Zhang, World Bank Practice Manager for Urban Development. “A special aspect of the USF is that it provides a corresponding selection of forward-looking methods and tools which peer cities are using to successfully finance and implement their projects.”
Cities can understand the USF’s dimensions of urban sustainability by using its “Measuring Framework”, which includes a selection of indicators that help cities track their progress toward their sustainability goals, while comparing against their peers, to promote an integrated approach to sustainability.
The USF is part of a larger collaboration for knowledge exchange on sustainable urban planning. Financed by the GEF and led by the World Bank, the Global Platform for Sustainable Cities (GPSC, www.thegpsc.org) was launched in March 2016. It was designed to meet the need for an enabling environment – a platform – that allows cities to exchange ideas, share experiences, use analytical tools, and, most importantly, steer investment toward long-term sustainability.
The GPSC assists cities in tapping into cutting-edge knowledge and expertise on topics ranging from urban planning to low-carbon strategy, transit-oriented development, and sustainable financing. Together with various partners in the urban realm, the GPSC is creating a suite of knowledge products and tools that will help cities drive their development agenda. The platform currently comprises of 28 cities from 11 countries.
An important collaborator joined the platform at WUF9 with the signing of a Memorandum of Understanding (MOU) between the city of Aarhus, Denmark, and the World Bank. Through the MOU, Denmark’s second largest city becomes a knowledge partner of the GPSC.
“Aarhus is very excited to become a GPSC knowledge partner and the opportunity this presents to collaborate with cities on a world-wide scale. We definitely have worthwhile experiences to share with our peers, and likewise hope to learn from others. Through this knowledge exchange, Aarhus can reflect upon our own policies and practices and work toward improving the city’s urban sustainability,” said Jacob Bundsgaard, Mayor of Aarhus.
GPSC and Aarhus will be collaborating in the following areas:
- sustainable, integrated planning strategies;
- low carbon development towards the goal of carbon neutrality;
- adaptation and resilience; and
- water management
“The GPSC builds a strong partnership with cities around the world to share cutting-edge knowledge. We look forward to working with the city of Aarhus to bring its urban sustainability knowledge and insights to many other cities,” said Xueman Wang, Program Manager for the GPSC.
Traditional building practices offer sustainable solutions as African cities grow
Located on the dusty outskirts of the Burkina Faso town of Koudougou, the Lycée Schorge Secondary School shows what is possible when you mix traditional techniques and new materials.
The school consists of nine modules arranged around a central courtyard, protecting the central space from wind and dust. Each module is built out of locally sourced laterite which is cut into bricks and left in the sun to harden. These bricks absorb the heat during the day and radiate it at night.
A secondary façade made of local eucalyptus wood wraps around the classrooms like a transparent fabric and creates various shaded spaces to protect students from stifling daytime temperatures.
The building, designed by the Berlin-based, Burkinabè founded architecture firm Kéré Architecture, is an example of how countries on the continent are using traditional building techniques to lessen the carbon footprint of their buildings.
Research shows that these techniques can help prevent the need for air conditioning, the long-range transport of building materials and concrete production, all of which contribute to the greenhouse gas (GHG) emissions driving the climate crisis.
With 70 per cent of Africa’s building stock that will exist in 2040 still to be constructed, experts say these energy-saving techniques are crucial.
“Traditional sustainable construction and building practices are a cornerstone of African cultural heritage,” says Jonathan Duwyn, from the United Nations Environment Programme’s (UNEP’s) Buildings and Construction, Cities Unit.
“Locally adapted sustainable design, construction, practices, and materials coupled with renewables and innovation represent a great opportunity for both mitigation and resilience in Africa’s rapidly growing building stock.”
The continent accounts for roughly 6 per cent of global energy demand, with more than half of this coming from its buildings. Given that Africa’s population is expected to reach 2.4 billion people by 2050, with 80 per cent of this growth occurring in cities, it is clear that sustainability needs to be a core principle of all future buildings.
With the launch of UNEP’s 2022 Global Status Report for Buildings and Construction at the UN Climate Conference (COP27) today, the focus is on how Africa can manage this urban growth and increase the resilience of its housing stock while avoiding an increase in GHG emissions.
It is a tall order, yet inspiration can be found in Africa’s past. Travel through Africa today, and hints of this past can be found everywhere, from Eswatini’s beehive huts to the Drogon cliff villages of Mali to the mud-brick mosques of West Africa.
“Africa is rich in renewable energy sources, solar and wind, with nearly half of the planet’s total renewable energy technological potential,” Duwyn says. “Locally adapted sustainable design, construction, practices, and materials coupled with renewables and innovation represent a great opportunity for both mitigation and resilience in the face of Africa’s rapidly growing building stock,” he adds.
This is particularly important given the projected demand for air conditioning units as more people get access to electricity and temperatures rise. “We expect cooling to be a major challenge when it comes to residential energy demand in Africa in the future,” says Duwyn. “This is why it is so important to ensure new buildings use natural cooling systems wherever possible.”
Only 43 per cent of the population had access to electricity in 2021, and the International Energy Agency estimates that African household energy demand by 2030 for cooling will increase the most.
Another Kéré Architecture project utilizing sustainable design and building practices is the Gando primary school. It is constructed of clay/cement hybrid bricks for a dry-stacked brick ceiling – instead of the more common corrugated metal roof – allowing maximum natural ventilation.
“These projects show that sustainable building practices are possible when innovative techniques are used,” says Duwyn. “And as Africa’s climate warms even more, it is vital that we embrace sustainable building designs that do not need costly and damaging cooling systems.”
As the Building Global Status Report highlights, Africa is rich in natural, sustainable materials such as adobe, laterite, termite mound soil, timber, stone, bamboo, sand and dry vegetation. While traditional construction techniques include rammed earth, sun-dried bricks, compressed earth blocks, wattle and daub, cob, timber-framed construction, sandbag construction and thatched roofs.
Ensuring sustainable materials are used is particularly important, given that according to UNHabitat, more than half the population (excluding in North Africa) live in overcrowded informal settlements, which are particularly vulnerable to the impacts of climate change.
“Quality, sustainable housing is an important way of ensuring vulnerable populations are more resilient to the effects of the climate crisis,” Duwyn says. Particularly the frequency of natural disasters has tripled in the past 30 years, with Sub-Saharan Africa home to nearly three-quarters – 393 million – of the global number of children living in countries affected by emergencies.
As the report makes clear, there is no one-size-fits-all answer to tackling Africa’s future building needs. But, as it is rich in renewable energy sources, and most of its building stock over the next two decades still needs to be built, the continent is well placed to be a leader in sustainable design practices.
Advanced forecasting to help millions on coasts and in cities cope with climate-change impacts
By SARAH WILD
In the freezing reaches of Greenland, fissures in the ice sheet mark the battle lines in the fight against climate change. Greenhouse gases (GHG) are driving up global temperatures, melting the ice and pushing more and more icebergs to break away from glaciers and ice sheets. When the ice melts and the water enters the ocean, it adds to rising sea levels, putting millions of people who live in low lying coastal areas across the globe at risk.
The Greenland ice sheet stores the equivalent of seven metres of sea-level rise, while the Antarctic ice sheet contains about 60 metres, and their rate of melting depends on a variety of factors, including how quickly humans reduce GHG.
‘It is more or less certain that we will not escape from a two-metre sea-level rise,’ said Gaël Durand, an ice-sheet specialist at the Université Grenoble-Alpes in France. ‘The question is now “When will it happen?” Will it be in 100 years or in 2000 (years)?’
This question, of how much and when, is not a simple one –– but the answer is vital for humanity to adapt to climate change. Unlike mitigation, which means reducing GHG emissions, climate adaptation aims at building resilience to the inevitable effects of a changing climate. But in order to adapt, decision makers need reliable information on what will happen to the climate in different regions.
This is where climate predictions and projections from scientific research play a crucial role: predictions attempt to provide estimates in the short-term — for example, the average annual or seasonal temperature in five years; whereas projections extrapolate what could happen in the long-term, under different possible futures, determined by more or less ambitious mitigation responses.
In the EU-funded PROTECT project, Durand and colleagues are working on projections, to more accurately determine what will happen to the ice sheets in a world of rising temperatures and how this will impact communities living in coastal areas.
‘We want to provide projections, but we want to be sure that these projections fit the needs of users, particularly coastal users,’ said Durand.
More than 200 million Europeans live within 50 km of the coastline, but rising sea levels will affect them all differently. ‘Typically the needs are very different, depending on the use you have of coastal land,’ explained Durand.
Using satellite and remote sensing data, as well as ice sheet data, the PROTECT project models how the ice sheet behaviour in Greenland and the Antarctic, as well as glaciers, will impact people on a regional and even local scale, with case studies in France, the Netherlands, Greenland, and the Maldives (in the Indian Ocean). ‘We work with stakeholders and practitioners to better understand what type of projections they need,’ Durand says.
Co-design with users is a feature of another EU-funded project, the European Climate Prediction System (EUCP), this one focusing on predictions. In the past, ‘it was often the climate scientist speaking and the user listening’, said Jason Lowe, science lead for the project and the UK Met Office’s principal fellow and head of climate services for government. ‘But we realised that the successful projects were when the user speaks more and the climate scientist listens and adapts to that.’
Innovation in knowledge production
For example, users were asking, ‘What does (climate change) mean for adaptation of cities? What does it mean for water availability? What does it mean for coastal protection?’ Lowe said.
‘You need different types of information to inform the solution.’
The EUCP brought together users and organisations interested in climate predictions, as well as superusers which had specific problems to solve, to see how climate science could bolster their adaptation strategies.
With their needs in mind, the project developed new methods to create more accurate decade-timescale forecasts. EUCP contributed to the World Meteorological Organization’s decadal forecasts exchange and produced new data that informed the sixth assessment of the Intergovernmental Panel on Climate Change (IPCC).
‘So if they’re looking at flash flooding, if they’re designing drainage systems, for instance, this data is available as a result of EUCP.’
While the project mostly focused on temperature and rainfall, it was also able to forecast storm tracks through the Caribbean and investigate wind droughts, which is when the wind speed is low, in France.
However, beyond the successful predictions, it’s the new methods that may become the project’s most important legacy, said Lowe.
One new method was the ability to combine different global climate models, giving more accurate models greater weight than those which were less precise in a given scenario. ‘We produced the first comparison of different methods to weight the projections,’ Lowe said.
The EUCP Atlas of climate projections provides pre-processed projections for Europe, and facilitates a comparison between them.
Bridging predictions and projections
The project team also developed a way to link predictions to longer-term projections. This method, allowing people to link decadal forecasts to longer-term climate projections, will also be one of the enduring legacies of the project, according to Lowe.
With more work to be done in decadal climate forecasting and projections, the EUCP will be succeeded by the ASPECT project (which stands for Adaptation-oriented Seamless Predictions of European ClimaTe), due to start next year. This continued effort is expected to improve our ability to forecast far into the future.
‘We also think we can take the idea of joining predictions to projections, and move it from something that’s academically interesting to something that can be used in climate services,’ he said. Climate services provide climate information which allows people and organisations to organise their activities and adapt to climate change.
Even if humanity cuts its emissions drastically, the climate is already changing and people around the world need to adapt. To do this, they need the vital and impartial information that projects such as PROTECT and EUCP provide.
Research in this article was funded via the EU. This material was originally published in Horizon, the EU Research and Innovation Magazine.
EU MISSION: ADAPTATION TO CLIMATE CHANGE
Whether it’s forest fires, floods or droughts, the consequences of climate change are already with us, and Europe is warming twice as fast as the world average.
Adapting to climate change means taking action now to prepare for both the current effects of climate change and future ones.
The Mission on Adaptation to Climate Change focuses on supporting EU regions, cities and local authorities in their efforts to build resilience against the impacts of climate change.
‘Act Local to Go Global’ provides universal theme for World Cities Day
The actions cities take locally to create a sustainable world will reverberate globally, UN Secretary-General António Guterres said on Monday, underlining the need to ramp up progress towards a more just and equitable future for people and the planet.
The SDGs outline global action and targets across 17 critical areas including poverty reduction, gender equality and clean energy.
“On World Cities Day, let us resolve to work with cities to build a sustainable, inclusive, and resilient world for all,” he said.
‘Backsliding’ on SDGs
The SDGs were agreed by countries in 2015, and Mr. Guterres noted that next year marks the mid-point on the path to the 2030 deadline.
However, an honest look so far reveals a bleak picture, he added.
“Across a range of critical goals – from poverty and hunger to gender equality and education – we are not seeing progress, but backsliding,” said the Secretary-General.
“The consequences are dramatic: escalating climate chaos, growing poverty, rising inequalities, and more.”
Change course now
The Secretary-General stressed that “we must change course – and we can”.
In line with the Day’s theme – ‘Act Local to Go Global’ – he said the SDGs are “global in scope, but implementation is local”, meaning that their implementation happens largely in cities.
Currently, more than half the global population lives in urban areas, rising to two-thirds by 2050.
Cities also generate over 80 per cent of global economic activity, and account for over 70 per cent of carbon emissions.
Leading the ‘green’ transition
The Secretary-General pointed out that many cities are already leading the transition to renewable energy, setting credible net-zero targets and building climate-resilient infrastructure.
“I encourage them to work with their governments and sister cities across the world to share experiences and help raise ambition,” he advised.
The UN chief underlined that the actions cities take locally towards sustainability will be felt across the world.
Furthermore, he added that “the transformative policies they pioneer today can catalyze change that will save lives and livelihoods everywhere tomorrow.”
Celebrations return to Shanghai
The global celebrations for World Cities Day are held in a different city each year. Shanghai served as host of the first celebrations back in 2014, and the festivities returned there this year.
Shanghai is China’s largest city, and the country’s President sent a congratulatory letter which was read by Party Secretary of the Shanghai Municipality, Chen Jining.
Other dignitaries who addressed the opening ceremony were the Minister of Housing and Urban-Rural Development, Ni Hong, and the Mayor of Shanghai Municipal Government, Gong Zheng.
‘Urban October’ ends
World Cities Day, held annually on 31 October, closes out a month of advocacy for sustainable urbanization, or “Urban October”.
Like the Secretary-General, the head of the UN agency that promotes a better urban future for all highlighted why countries must step up the pace.
“We have only about 87 months, 380 weeks or 2,600 days left to implement the 2030 Sustainable Development Goals. The best way to do so is by ensuring our cities and communities are sustainable. The time to act is now,” said Maimunah Mohd Sharif, Executive Director of UN-Habitat.
A government priority
UN-Habitat has been advocating for the localization of SDGs since the endorsement of the 2030 Agenda for Sustainable Development. The agency’s work in this area is guided by what it calls by a partnership-based territorial approach, human rights, and multilevel governance.
“The priority for any responsible government is to ensure that the quality of life for its citizens and to make cities more child friendly, accessible for the elderly, greener, and friendlier,” said UN Resident Coordinator in China, Siddharth Chatterjee.
The global celebrations for World Cities Day 2022 were held both in-person and online. They were livestreamed at the UN complex in Nairobi, Kenya, the home city of UN-Habitat.
Representatives from China, Eritrea and Kenya attended the Nairobi ceremony, while more than 350 people from around the world joined the hybrid event, with over a dozen UN Member States participating online from Nairobi.
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