Recently, scientists have utilised advanced supercomputer climate models to project potential future scenarios driven by extreme global warming. These models present a grim outlook, indicating that Earth's temperatures could escalate to an unprecedented 70°C (158°F), potentially jeopardising the survival of all mammals, including humans. This extreme warming could lead to a transformation of Earth into an inhospitable environment, lacking essential resources like food and water.
Projections of Extreme Temperature Rise
The first-ever supercomputer climate models suggest that Earth's temperatures could reach 70°C (158°F), which is an unprecedented level of heat. This potential outcome could create an environment inhospitable for mammalian life, including humans.
Formation of Pangea Ultima
Due to extreme global warming, Earth's continents may eventually merge into a supercontinent referred to as "Pangea Ultima". This landmass would be characterised by harsh, arid conditions, severely limiting habitable areas.
Increased Carbon Dioxide Levels
Tectonic movements and volcanic eruptions are anticipated to release significant amounts of carbon dioxide (CO₂) into the atmosphere. This increase in CO₂ levels would intensify the greenhouse effect, further contributing to global warming.
Habitability of the Supercontinent
Under the projected conditions, only a fraction (8% to 16%) of the supercontinent is expected to remain habitable. Mammals, including humans, may face challenges in adapting to these extreme heat levels, as they are better adapted to colder environments.
Dr. Alexander Farnsworth, the lead author of the study, emphasises the compounding effect of the emergent supercontinent. This combination of continentality, a more intense sun, and elevated CO₂ levels could result in widespread temperatures between 40°C to 50°C. This environment could pose challenges to mammals, including humans, in regulating their body temperature, potentially impacting their survival.
CO₂ Projections and Fossil Fuel Usage
The study indicates that if current practices of burning fossil fuels persist, CO₂ levels could rise much sooner than the projected 250 million-year timeline, potentially accelerating the onset of extreme global warming.
Urgent Need for Action
The insights derived from the first-ever supercomputer climate models underscore the urgency of addressing the current climate crisis. Driven by human emissions of greenhouse gases, this crisis necessitates immediate, coordinated action. Achieving net-zero emissions promptly is imperative in mitigating the potential catastrophic consequences of extreme global warming. The imperative is clear, and the time for action is now.