热浪提前来袭 气候警钟再响——访欧盟气候监测机构科学家尼古拉斯

Core Insights - The Copernicus Climate Change Service reported that June 2023 was the third hottest June globally since records began in 1940, with Western Europe experiencing the hottest June on record [1] - The report highlights that heatwaves are occurring earlier, more frequently, and with greater intensity in Europe, closely linked to global warming [1] Group 1: Climate Trends - Western and Southern Europe experienced two significant heatwaves in late June, indicating a shift in the timing of such events from July and August to June [1] - A key factor contributing to the intensified heatwaves in June is the record high sea surface temperatures in the Western Mediterranean, which has led to numerous "tropical nights" where temperatures do not drop below 20 degrees Celsius [1] Group 2: Oceanic and Polar Impacts - The Mediterranean region is becoming a climate change hotspot, with its warming rate significantly exceeding the global average [1] - The ocean absorbs about 90% of the heat associated with greenhouse gas emissions, posing severe threats to marine ecosystems, including increased coral bleaching observed globally [1] - Arctic warming is occurring at a rate much faster than the global average, which may alter the jet stream and lead to more frequent extreme weather events [1] Group 3: Ice Coverage - In June, Arctic sea ice extent was 6% below the average, marking the second lowest June extent in 47 years of satellite records, while Antarctic sea ice was 9% below average, the third lowest on record for June [2] - Eastern and Southeastern Europe may face heightened risks of high temperatures and drought in the coming months, with heatwaves becoming a new norm for European summers [2] Group 4: Climate Action Recommendations - The report emphasizes two critical directions for addressing climate change: accelerating mitigation measures to reduce greenhouse gas emissions and enhancing adaptive capacity to improve resilience against extreme weather and long-term warming trends [2]