New research suggests that even if the world achieves net-zero greenhouse gas emissions, tropical regions will be among the last to experience the benefits of reduced warming. The study, led by Dr. Andrew King and colleagues at the University of Melbourne, analyzed computer modeling experiments on temperature changes under net-zero scenarios.
The findings indicate that temperatures have already risen more significantly in tropical areas compared to higher latitudes, including in wealthier nations. This inequality in warming is projected to persist indefinitely, and could take many decades to begin reversing even with plans for net-negative emissions. King stated that the regions least responsible for warming are experiencing the most severe effects.
King further explained that tropical ecosystems, such as coral reefs, are more sensitive to temperature changes due to evolving in narrower temperature ranges. He emphasized that reaching net zero sooner is crucial to limit long-term warming and inequality.
Coinciding with this research, the UN refugee agency released a report highlighting the link between the climate crisis and an increase in statelessness. The report, co-authored by University of Melbourne Associate Prof. Radha Govil, noted a correlation between regions most affected by climate change and statelessness. The agency estimates that approximately 4.5 million people are currently stateless, a number likely higher due to invisibility in official statistics. The report calls for measures to digitize citizenship records and ensure children are afforded citizenship, especially after climate-driven disasters.