最新气候变化研究：2020年出生人群或将更频繁遭遇极端气候事件

Core Insights - The research published in the journal "Nature" indicates that approximately 52% of individuals born in 2020 will face unprecedented heatwave exposure risks under a 1.5°C warming scenario, compared to only 16% of those born in 1960 [1][3]. Group 1: Research Findings - The study predicts that under current mitigation policies aiming for a 2.7°C increase by 2100, the exposure risk for those born in 2020 will double compared to those born in 1960 [3]. - Among the 1960 cohort, about 16% (13 million people) will face unprecedented lifetime heatwave exposure risks, while for the 2020 cohort, this figure rises to approximately 52% (62 million people) if warming reaches 1.5°C, and up to 92% if it escalates to 3.5°C [3][4]. Group 2: Broader Implications - The study expands its analysis to include five additional extreme climate events (crop failure, wildfires, droughts, river flooding, and tropical cyclones), finding that exposure levels will significantly increase with each successive birth cohort [4]. - It highlights that within each birth cohort, the socio-economically vulnerable groups are more likely to face higher degrees of exposure to extreme climate events compared to their less vulnerable counterparts [4].