Urbanization Induced Climate Change: Impacts and Sustainable Solutions

Abstract

The 21st century is witnessing tremendous and remarkable changes across the globe and one of them is the urbanization, profoundly shaping the environmental dynamics and climate change. It is estimated that by 2024, 56 per cent of the world's population to resides in urban centres, and an increase of 70 per cent will be seen by 2050. These projections implied that urbanization have the potential to accelerate economic growth but possibility of exacerbating climate-related challenges is also there. Urbanization primarily influences climate change by means of increased greenhouse gas (GHG) emissions. Urban centres account for about 70-80 per cent of global carbon dioxide (CO₂) emissions, principally from energy demand, industrial processes, and extensive transport systems. Additionally, unplanned urban expansion can lead to further deforestation and the destruction of natural habitats, which contributes to the urban heat island (UHI) effect: the phenomenon where cities become significantly warmer than their rural countryside surroundings. The impervious surfaces (like road and buildings) lead to increased stormwater runoff and the potential for flooding and water pollution, which climate change is only making worse. Consequently, urban spaces consume more energy, breathe lower air quality, and consume polluted waters which contributes to health issues and increase of financial burden on the pockets of urban populations. Urbanization induced climate change unequally affect the vulnerable populations in urban areas as they lack access to resources and infrastructure necessary for adaptation. This inequity underscores the need for inclusive urban planning that considers the needs of all residents, particularly marginalized communities. However, Cities also provide opportunities to mitigate the challenges of climate change that urbanization brings. Urban settings can achieve economies of scale that minimize per capita emissions by adopting compact infrastructure and efficient public transit systems. For example, cities that invest in public transportation expansion and green building practices can greatly reduce their carbon footprints. Unfortunately, large numbers of cities, especially in developing countries, are following unsustainable growth patterns with informal settlements, poor public transport, and a reliance on fossil fuels. These practices not only aggravate environmental degradation but also impinge upon the potential to strong climate adaptation and resiliency.