Are Brazilian cities ready to adapt to climate change? Driven by this question, scientists at the University of São Paulo (USP) have developed an index to measure the adaptive capacity of urban centers to the impacts of climate change. The index, called the Urban Adaptation Index (UAI), is described in an article published in the May issue of the scientific journal "Climatic Change".
Developed by researchers from the CiAdapta project, which studies the interactions between climate transitions, cities, and decision-making processes, the UAI aims to evaluate the presence or absence of legal and regulatory frameworks supporting urban interventions related to climate adaptation.
In total, there are 26 indicators associated with five sets of municipal public policies that support urban interventions: housing, urban mobility, sustainable agriculture, environmental management, and climate risk management.
Two aspects were considered in developing the index: climate projections for Brazil—including temperature increases, heat waves, and the frequency of droughts and floods—and the country's governance system, which delegates the responsibility for urban sustainability planning to municipalities.
Using public data from the Brazilian census, the study applied the index to assess the current adaptive capacity of the 645 municipalities in the State of São Paulo, a sample that represents 21% of the country's population and accounts for 32.4% of Brazil's GDP.
More than half of the municipalities in the state of São Paulo show low capacity to adapt to climate change, scoring poorly on the Urban Adaptation Index. However, municipalities near or within metropolitan areas, where most of the population lives, achieved the highest scores, indicating greater potential for climate adaptation.
According to Gabriela Marques Di Giulio, a USP researcher and co-author of the study, the Urban Adaptation Index is innovative because it uses public census data to generate information on the level of adaptation in cities. “The use of public data allows for dynamic updates to the UAI, making it a useful tool for monitoring urban changes and transition processes,” she notes. The proposed UAI indicators can be applied to cities across the country.
Another key point highlighted by the researcher is that the index fosters public debate on climate change. “By evaluating the differences and similarities in cities' current capacity—or lack thereof—to deal with the impacts and risks of climate change, this index can stimulate dialogue among municipalities to create public policies that align adaptation with urban sustainability.”
Di Giulio acknowledges that while improvements in income, education, and health levels are important for reducing vulnerability to climate change, it is also essential to consider each city's specific capacity to address this context, such as contingency plans, urban land-use policies, and hazard mapping.
According to Di Giulio, the CiAdapta Project group's next challenge is to apply the UAI and develop other climate change indices with robust metrics for Brazilian cities to use. “The goal is for these indices to be tailored to the specific realities of Brazil, easy to use, and reflective of our cities' adaptive capacity,” she concludes.
Via CicloVivo.
This article was written by Romullo Baratto. The translation is powered by AI.
