埃菲尔铁塔热到弯曲，美国有机场跑道热裂！北半球提前进入“炙烤模式”

Core Viewpoint - The article discusses the increasing frequency and intensity of extreme heat events globally, particularly in the Northern Hemisphere, and highlights the significant impact of climate change on weather patterns and economic conditions [1][3][9]. Group 1: Climate Change and Extreme Weather - The summer of 2025 has seen unprecedented heat waves, with Paris recording a temperature of 42.3°C, breaking a record set in 1947 [1]. - The Copernicus Climate Change Service reported that June 2025 was the third hottest June on record, with an average surface temperature of 16.46°C, 0.47°C higher than the average from 1991 to 2020 [1]. - The World Meteorological Organization (WMO) warns of an 80% probability of experiencing the warmest years between 2025 and 2029, with a 86% chance of global temperatures exceeding pre-industrial levels by 1.5°C [1][6]. Group 2: Regional Impacts - The frequency and intensity of extreme heat events in Europe are increasing, with projections indicating that by 2050, about half of the European population may face high heat stress risks during summer [3]. - Mediterranean regions experienced 10-15 "tropical nights" in June, where nighttime temperatures remained above 25°C, a phenomenon that typically does not occur in this period [4]. Group 3: Economic Consequences - Extreme weather events, including heat waves, are expected to slow global economic growth by 0.6 percentage points in 2024, as extreme heat impacts productivity [11]. - The International Energy Agency reported a 0.8% increase in CO2 emissions in 2024, reaching a record high of 3.78 billion tons, contributing to the worsening climate crisis [10]. Group 4: Call for Action - The WMO emphasizes the need for international cooperation to address climate challenges, including the establishment of early warning systems, with only 50% of countries currently equipped [12]. - Increased financing support from international financial institutions and climate funds is essential to enhance climate resilience, particularly for vulnerable populations [13].