US Cities To Become Deserts By 2075: Climate Shift

The year is 2023, and the once-thriving city of Phoenix, Arizona is experiencing a severe heatwave, with temperatures reaching record highs of 120 degrees Fahrenheit. But this is not an isolated incident – it's a sign of things to come.

In a study published in the journal PeerJ, researchers from the Open Earth Monitor Cyberinfrastructure project used high resolution data and machine learning to map how natural vegetation zones – or biomes – will shift by 2080 under different climate scenarios.

Shifting Biomes

Projections show that dozens of American cities are on track to shift into full desert biomes within the next half-century, reshaping the land, vegetation, and habitability of entire communities. A researcher on the project notes,

the central U.S. will become hotter and drier, with iconic grasslands replaced by more desert-like vegetation – fewer wildflowers, more tumbleweeds.

This transformation will have far-reaching consequences, from altering local ecosystems to impacting human health and livelihoods.

Desert Expansion

The desert biome is forecast to expand by 182,000 square miles – growing from 6.0% to 11.9% of U.S. land area – and will extend into some of America's largest cities.

Wet forests throughout the East Coast may give way to drier, more drought-tolerant flora, while the deserts of Arizona, New Mexico, and southern California will expand into Texas and Colorado. As an analyst who tracks the sector notes,

the expansion of deserts into urban areas will require significant investments in infrastructure, from water management systems to heat-resistant construction materials.

Urban Impacts

The transformation of cities into deserts will have profound impacts on urban planning and development. Cities will need to adapt to new climate realities, investing in green infrastructure, such as parks and green roofs, to mitigate the effects of heatwaves and droughts.

A longtime resident of Phoenix notes,

we're already seeing the effects of climate change in our city – more frequent heatwaves, more intense dust storms. It's time for us to take action and invest in a more sustainable future.

Economic Consequences

The economic consequences of this transformation will be significant, with estimates suggesting that the expansion of deserts into urban areas could cost the U.S. economy trillions of dollars in the coming decades.

The decline of land area classified as cool mixed forest, cool evergreen needleleaf forest, and temperate evergreen needleleaf open woodland will also have significant impacts on local economies, from forestry to tourism. As an economist notes,

the costs of climate change will be felt across the entire economy, from agriculture to real estate – it's time for us to take a comprehensive approach to addressing this challenge.

Conclusion: Why This Matters

The projection that dozens of American cities will become deserts in the next 50 years is a stark reminder of the urgent need for climate action. As the world continues to warm, the natural geography of the United States will be transformed, with far-reaching consequences for human communities and the environment.

It's time for us to take action, investing in renewable energy, reducing greenhouse gas emissions, and adapting to the new climate reality. The future of our cities, our economy, and our planet depends on it.

Impacts on Biodiversity

The transformation of cities into deserts will also have significant impacts on biodiversity, as many species that are adapted to cooler and more temperate climates will struggle to survive in the new desert environments. A researcher on the project notes,

we're likely to see a significant decline in species richness and abundance, particularly among plants and animals that are sensitive to temperature and moisture changes.

This will have cascading effects on ecosystem services, including pollination, pest control, and nutrient cycling.

Water Management Challenges

The expansion of deserts into urban areas will also pose significant water management challenges, as cities will need to adapt to new hydrological realities. In areas where rainfall is scarce, cities will need to invest in innovative water harvesting and storage systems, such as green roofs and rainwater collection systems.

As an analyst who tracks the sector notes,

the cost of water infrastructure upgrades could be substantial, but it's a necessary investment to ensure the long-term sustainability of our cities.

In areas where groundwater is limited, cities may need to rely on alternative sources, such as desalination or water recycling.

Planning for Resilience

To mitigate the impacts of desertification, cities will need to adopt a proactive and resilient approach to urban planning. This will involve investing in green infrastructure, such as parks and green spaces, to help mitigate the effects of heatwaves and droughts.

Cities will also need to adopt innovative urban design strategies, such as narrow streets and shaded sidewalks, to reduce the urban heat island effect. A longtime resident of Phoenix notes,

we need to think about how we can design our cities to be more resilient to climate change – it's not just about adapting to the new reality, but also about creating a better future for ourselves and our children.

Furthermore, cities will need to engage in comprehensive planning efforts to address the social and economic impacts of desertification. This will involve investing in education and job training programs, to help workers adapt to the new economic reality.

Cities will also need to invest in social services, such as heatwave relief programs and mental health support, to help vulnerable populations cope with the stresses of climate change. By taking a proactive and resilient approach to urban planning, cities can reduce the risks associated with desertification and create a more sustainable future for all residents.

International Cooperation

The challenge of desertification is not unique to the United States, and will require international cooperation to address. The United Nations has established a number of initiatives, such as the Convention to Combat Desertification, to promote global cooperation on desertification and land degradation.

As an analyst who tracks the sector notes,

international cooperation will be essential to addressing the global challenge of desertification – we need to share knowledge, expertise, and resources to develop effective solutions.

By working together, nations can develop and implement effective strategies to mitigate the impacts of desertification and promote sustainable land use practices.