villages; as a consequence, they had limited
the interest of the more influential and less
Bipasha Dutta
Transformative climate action in cities
François Gemenne, Caroline Zickgraf, Anneliese Depoux, Laetitia Pettinotti, Agathe Cavicchioli
and Sarah Rosengaertner
A critical, but understudied, issue of concern is how climate change will affect migrant
populations living in cities (including refugees and internally displaced people), and how
local governance and actions to combat the effects of climate change will address migrants’
vulnerability and support their inclusion in cities.
Cities today are at the forefront of climate
change. Although they occupy only 2% of the
earth’s land surface, they are home to more
than half the world’s population and represent
about 80% of the world’s energy consumption
and more than 60% of greenhouse gas
emissions.¹ Due to expanding populations
and growing needs, cities’ residents,
infrastructure and services are highly
vulnerable to the impacts of climate change.
Indeed, many cities are already suffering from
climate-related hazards including flooding,
coastal erosion, heatwaves and landslides,
and many more will have to face these risks
in the future. The recent decision by the
Government of Indonesia to relocate the
country’s capital from low-lying Jakarta to
the island of Borneo is telling in that regard.
In recent years, cities have affirmed
their positions as driving forces in the
fight against climate change and have
demonstrated leadership and concerted
action. In particular, C40 Cities Climate
Leadership Group (C40), the network of
96 cities committed to climate action, is
fostering cooperation and ensuring that
cities’ voices are represented in international
climate diplomacy and policy-making fora.
We argue that migration, including
forced migration, have implications for
cities’ responses to climate change – in terms
both of emissions reduction efforts and
resilience building in cities, and specifically
within urban migrant communities.2 When
considering inclusive climate action in cities,
distinguishing between forced migrants and
migrants matters little. What matters are, first,
marginalisation (which prevents people’s
access to basic services) and, second, climate
action (which has the potential to increase
people’s capacity to adapt and to contribute
to reducing climate change impacts).
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www.fmreview.org/cities
UNHCR/Jim Huylebroek
February 2020
Dasht-e Tarakhil is an informal settlement on the eastern outskirts of Kabul, Afghanistan, mostly populated by Afghans who have returned
from Pakistan. UNHCR and its partners are helping returnees gain access to basic services, land and jobs.
Vulnerability of forced migrants to urban
climate change
People often move to urban areas that
provide improved income-generating
opportunities, infrastructure and social
services but which may be exposed to
other kinds of risks. South and East Asia
are particularly vulnerable to large-scale
displacement because sea-level rise will
have a disproportionate effect on their large
populations living in low-lying urban areas.
Six of Asia’s ten mega-cities, for example,
are located on the coast (Jakarta, Shanghai,
Tokyo, Manila, Bangkok and Mumbai).
In cities and metropolitan areas, the
economic, social, political and geographical
marginalisation of migrants affects their
abilities to cope with slow-onset (for
example, temperature rise and recurrent
heatwaves) and sudden shocks (such as
flooding and storm surges) resulting from
climate change. Urban migrant residents
from lower-income groups bear, and will
continue to bear, the greatest risks from the
impacts of climate change, as they are less
able than those with greater resources to put
in place short-term coping measures, such
as evacuating family members or protecting
assets from associated loss and damage.
They are also less likely to be able to recover
from detrimental impacts on their physical,
economic and psychosocial wellbeing.
Sudden and slow-onset disasters may
disproportionately affect marginalised
migrant communities, particularly when they
are already living in precarious conditions.
Limited employment opportunities
and livelihood insecurity, weakened or
reduced access to social services, poor
housing conditions, and exposure to crime
and other social conditions contribute
to migrants’ increased vulnerability to
environmental stresses and shocks. When
housing choices and labour opportunities
are limited, newcomers often settle in the
most dangerous areas in terms of climaterelated disaster risk – where housing is
cheaper and more readily available but where
living conditions are also comparatively
worse. They end up occupying spaces with
weak and inadequate infrastructure and
limited social services, which are exposed
to hazards such as flooding and landslides.
Moreover, migrants often live in unsafe
buildings that do not adhere to building
codes or regulations (where such codes exist).
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Migrants in these areas then end up suffering
disproportionately when disasters occur –
and their risk of displacement increases.3
Adding to the challenges above, language
barriers, limited assets, a lack of knowledge
of local contexts and previous environmental
shocks, discrimination, insufficient community
participation and representation, and weak
social networks can all alter migrants’
perception of environmental risks and
hinder their access to timely, good-quality
and complete information before, during
and after disasters occur.⁴ These factors can
push migrants to make hazardous choices.
For example, a lack of personal experience
of mudslides may be a contributing factor
to why migrants from the northeast of
Brazil erect precarious constructions on
mudslide-prone slopes above favelas in Rio
de Janeiro.5 Their vulnerability to disaster
can also manifest itself in their evacuation
responses. For migrants with few assets
and/or living in informal settlements with
precarious land rights, the need to stay
behind to guard houses and belongings can
also reduce their willingness to evacuate or
can cause them to return home prematurely
in the immediate aftermath of a disaster.
These constraints can also reduce people’s
abilities and willingness to seek and receive
relief in the wake of sudden-onset events. A
lack of roads and infrastructure can hinder
emergency services from reaching informal
settlements with critical supplies and services.
When documentation is a prerequisite for
receiving assistance, irregular and forced
migrants who have lost their documents in the
course of a disaster or previous displacement
face difficulties in accessing relief. Even when
this is not the case, for those undocumented the
fear of deportation may outweigh their need
for formal support, and be exacerbated when
there is a lack of trust in local officials. When
migrants are not taken into account in disaster
risk reduction and preparedness and climate
action plans, they may be forced to rely on
informal aid and social networks for support.
The inclusion of urban migrants in
climate change adaptation planning, disaster
risk reduction and preparedness and in
relief programmes is therefore critical.
February 2020
With well-managed urban migration and
settlement and good integration policies
(economically, socially and civically), cities
can enhance the capacity of incoming
populations to cope with and adapt to the
impacts of climate change. This requires
improved governance, coordination and
communication across all levels and sectors
of government, engagement with civil society,
and the active participation of all crosssections of the urban migrant community.
The links between forced migration and
climate action: a research agenda
In cities, forced migrants may have
considerable transformative potential for
climate action. We have identified a number
of sectors where further research in this area
is needed. Without such research, we argue,
there is a high risk that climate action cannot
be fully inclusive and climate action in cities
cannot unleash its full potential in terms of
reducing emissions, building resilience and
ensuring that our cities lead the just transition
of our societies to a low-carbon and inclusive
future. It will be important to ensure specific
consideration of gender, youth and the elderly
in relation to the sectors identified below.
Transport is a key source of greenhouse
gas emissions, and a key sector where
transformations are possible. In the Global
South, forced migrants often settle in informal
settlements that are isolated from major
services and/or relatively inaccessible. In
emerging economies and industrialised
countries, they often live in neighbourhoods
that are insufficiently served by public
transport, which affects their ability to
access labour markets, job opportunities,
social and health services, and so on. The
city of Paris, for example, is currently
redesigning its public transportation system
so that it includes the greater suburbs
where most immigrant populations live.
Housing is another key source of
greenhouse gas emissions in cities but
is also often a source of vulnerability,
as migrants’ homes are often more
exposed to natural disasters. Therefore,
improving migrants’ housing can be both
a mitigation and an adaptation policy.
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Cities and towns
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Increasingly, cities will seek to
achieve local food security in order
to reduce dependence on imported
food. It is essential that migrants – who
often rely on their own food systems
– are integrated into any resilient food
systems that cities seek to develop.
In both industrialised and developing
countries, access to health services is
often problematic for migrants, especially
undocumented migrants. This means
they are likely to suffer more as a result
of the health impacts of climate change,
in addition to the health issues associated
with migration. There needs to be more
collaboration between researchers in the areas
of climate change, migration and health.
Finally, political participation and
mobilisation lie at the heart of realising
the transformational potential of forced
migration/migrants. Migrants are often
unable to fully exert their political rights,
even in countries where non-nationals
have the right to vote in local elections.
Sometimes they lack the documentation that
would enable them to vote and participate
in collective decisions, or they do not feel
legitimate or safe enough to do so, yet it is
essential that climate action is participatory
and designed to include migrants.
We know the sectors mentioned above
are critical to meeting cities’ greenhouse
gas emission targets and for building
urban resilience. We suggest that in-depth
research is needed to better understand
how forced migration interacts with
cities’ action in those sectors. We propose
a threefold research agenda on:
the impact of forced migration on
critical climate action sectors: how can
researchers best support city planning and
preparedness, including with data on what
to expect in terms of forced migration in an
era of accelerating climate crisis?
the specific vulnerabilities of forced
migrant populations: how can we support
city climate actions to ensure that they
neither leave migrants behind nor have
unintended consequences in terms of
exacerbating vulnerabilities – such as
www.fmreview.org/cities
congestion pricing in city centres that
makes it difficult for migrant workers to
get to work?
the shared vulnerabilities and
opportunities for making common
cause among forced migrants and other
vulnerable populations in urban areas: how
can we empower and support coalitionbuilding and joint advocacy by those
people who are most affected, coming
together around shared concerns?
Addressing such issues together will be
essential not only for effective climate
action at the local level but also for
migrants’ successful inclusion in cities.
François Gemenne F.Gemenne@uliege.be
Director
Caroline Zickgraf caroline.zickgraf@uliege.be
Deputy Director
The Hugo Observatory, University of Liège
www.hugo.uliege.be
Anneliese Depoux anneliese.depoux@uspc.fr
Co-director, Centre Virchow-Villermé, University
Paris Descartes http://virchowvillerme.eu
Laetitia Pettinotti
laetitia.pettinotti@hotmail.com
Senior Research Officer, ODI www.odi.org
Agathe Cavicchioli acavicchioli@c40.org
Head of City Diplomacy (interim), C40 Cities
www.c40.org
Sarah Rosengaertner
sarahrosengaertner@gmail.com
Senior Advisor, Open Society Foundations
www.opensocietyfoundations.org
1. Gemenne F and Rankovic A (2019) Atlas de l’Anthropocène.
bit.ly/Atlas-Gemenne-Rankovic-2019
2. This article is based on a study conducted for C40 Cities and
the Mayors Migration Council, with the support of the Open
Society Foundations and the Swiss Agency for Development and
Cooperation.
3. De Sherbinin A et al (2012) ‘Migration and risk: net migration in
marginal ecosystems and hazardous areas’, Environmental Research
Letters 7(4) https://doi.org/10.1088/1748-9326/7/4/045602
4. IOM (2015) World Migration Report: Migrants and Cities: New
Partnerships to Manage Mobility
www.iom.int/world-migration-report-2015
5. Warn E and Adamo S B (2014) ‘The Impact of Climate Change:
Migration and Cities in South America’, Bulletin 63 (2), World
Meteorological Organization
bit.ly/WMO-cities-south-america-2014