Core Insights - The World Meteorological Organization reports that concentrations of greenhouse gases such as carbon dioxide, methane, and nitrous oxide reached historic highs in 2024, indicating a significant environmental concern [1] Group 1: Greenhouse Gases Overview - Greenhouse gases act like a "thermal blanket" for the Earth, absorbing and re-radiating heat, which is essential for maintaining suitable temperatures for life [1] - Common greenhouse gases include carbon dioxide, methane, nitrous oxide, and fluorinated gases [1] Group 2: Measurement and Impact of Greenhouse Gas Concentration - The concentration of greenhouse gases is measured in parts per million (ppm) for carbon dioxide and parts per billion (ppb) for methane and nitrous oxide, indicating very low levels in the atmosphere [3] - An increase in greenhouse gas concentration enhances the greenhouse effect, leading to global warming and extreme weather events, which can significantly impact agriculture, energy, and health sectors [8][10] Group 3: Causes of Increased Greenhouse Gas Concentration - Human activities such as fossil fuel combustion, agricultural practices, and land-use changes are the primary drivers of increased greenhouse gas emissions, surpassing natural absorption capabilities [7] - The decline in the carbon absorption capacity of ecosystems, such as oceans and land, contributes to the rising concentrations of greenhouse gases [4][5] Group 4: Effects on Climate and Agriculture - The rise in greenhouse gas concentrations is linked to more frequent and intense extreme weather events, such as heatwaves and droughts, which pose challenges to agricultural production [9][10] - Changes in climate are causing agricultural zones to shift northward and westward, affecting crop yields and introducing new health risks due to the spread of tropical diseases [10] Group 5: Mitigation and International Cooperation - Addressing climate change requires improved monitoring and early warning systems for natural disasters, as well as integrating climate risk considerations into agriculture, urban planning, and public health [11] - Global cooperation is essential for effective climate governance, with a focus on low-carbon initiatives and support for developing countries in adapting to climate change [12]

西布鲁克表示，每次发现新逸出点都让人兴奋，但很快就被焦虑和担忧取代，因为可能有更多甲烷快速 进入大气，而目前许多预测气候变化趋势的研究还未考虑这一因素。 研究团队利用遥控潜水器并派遣冰下潜水员在罗斯海不同的深度探查甲烷逸出点。去年，在位于南极罗 斯岛的埃文斯角，他们意外找到数十处新的逸出点。 西布鲁克说，如果这种趋势持续，5到10年后的南极近岸环境将发生怎样的变化，令人深思。（完） 领导这项研究的海洋学家萨拉·西布鲁克说，这些逸出点多为近年来形成，说明新西兰大陆周边南极区 域甲烷排放模式出现重大变化。甲烷是一种温室气体，科学家正在研究这些甲烷的来源，以及与日益加 剧的气候变暖之间的关联。 西布鲁克说，甲烷逸出是指甲烷等化学物质从海底下方储层逸出并溶入海水，部分形成直达水面的气泡 流。2012年，首个逸出点在南极偶然被发现，此后数量持续增加，在北极也观测到类似现象。团队记录 了深入南极洲的罗斯海浅水区域几十处新的甲烷逸出点。这项研究已发表在英国《自然-通讯》杂志 上。 新华社惠灵顿10月17日电（记者龙雷 李惠子）新西兰地球科学组织领导的一项国际研究发现，在南极 海域发现的甲烷逸出点数量正以惊人的速度增加，引发 ...

Core Insights - The latest report from the American Meteorological Society, titled "Annual Climate Status Report," warns that multiple climate indicators are set to break records in 2024, including greenhouse gas concentrations, land and ocean temperatures, sea level heights, and ocean heat content [1][2] Group 1: Greenhouse Gas Concentrations - The concentration of carbon dioxide in the atmosphere has reached 422.8±0.1 parts per million (ppm), a 52% increase from the pre-industrial level of 278 ppm [1] Group 2: Temperature Records - Global surface temperatures have broken records for two consecutive years, exceeding the 1991-2020 average by 0.63℃ to 0.72℃ [2] - The period from 2015 to 2024 is confirmed as the hottest decade on record, according to six authoritative datasets [2] Group 3: Ocean Temperature and Heat Waves - Influenced by the El Niño phenomenon, global sea surface temperatures are expected to reach new highs in 2024, with an increase of 0.06℃ compared to the record set in 2023 [2] - Approximately 91% of ocean areas are experiencing heat waves, while only 26% are facing cold waves [2] Group 4: Water Cycle and Extreme Weather - The amount of water vapor in the atmosphere has reached a historical high, with over 20% of global regions experiencing extreme vapor values, significantly higher than the 10% recorded in 2023 [2] Group 5: Ocean Heat Content and Sea Level Rise - Global ocean heat content has reached unprecedented levels, with measurements taken from the surface down to 2000 meters deep continuing to increase [2] - The global average sea level has set new records for 13 consecutive years, rising approximately 105.8 millimeters since the beginning of satellite monitoring in 1993 [2] Group 6: Glacier Melting - In 2024, 58 benchmark glaciers worldwide have reported mass loss for two consecutive years, marking the largest average loss in 55 years [2] - Venezuela has become the first Andean country to completely lose its glaciers, while the Conejeras Glacier in Colombia has been officially declared "dead" [2]

Core Points - The "heat dome" phenomenon is currently affecting millions in the Northern Hemisphere, particularly in Europe and the United States, leading to dangerously high temperatures [1][2] - Climate scientists report that the intensity and duration of such extreme atmospheric events have nearly doubled since the 1950s [1] - The UK experienced its hottest June on record, with temperatures in London expected to reach 35°C, while parts of the US saw temperatures exceed 40°C [1][4] Group 1 - The "heat dome" is characterized by high-pressure systems that trap hot air in a region, preventing cooler air from entering, resulting in heat waves [1][2] - In Europe, countries like Greece, Spain, and France are facing unprecedented heat, with temperatures deviating from seasonal averages by 10°C to 14°C [2] - The phenomenon is linked to human-induced climate change, which has increased greenhouse gas levels, making it harder for the Earth to release excess heat [2][10] Group 2 - Research indicates that the frequency of atmospheric blocking events, which lead to heat waves, wildfires, and floods, has increased significantly over the past 70 years [8] - The current "double heat dome" phenomenon is associated with persistent fluctuations in jet streams, which are not fully captured by existing climate models [10] - Experts warn that typical summer weather patterns are becoming a thing of the past, with extreme temperature and precipitation events becoming the norm [10]

Core Viewpoint - The necessity of carbon reduction is emphasized as a self-driven initiative for China, rather than a response to external pressures [1] Group 1: Understanding Carbon and Its Implications - "Carbon" in the context of carbon reduction refers to greenhouse gases, primarily carbon dioxide, which is closely linked to human activities [2] - The direct reason for carbon reduction is the threat of climate warming to human survival and civilization, with the UN warning of the direct link between increased greenhouse gas emissions and severe climate disasters [3] Group 2: International and Domestic Reasons for Carbon Reduction - Internationally, carbon reduction is essential for China to take on major country responsibilities and contribute to global environmental governance, enhancing its influence in the global environmental governance system [5] - Domestically, carbon reduction supports the green and low-carbon transformation of the economy, meeting the public's demand for a better ecological environment, and promoting sustainable development [6] Group 3: Economic and Environmental Benefits - The reduction of carbon emissions is linked to significant improvements in air quality, with PM2.5 concentrations in cities decreasing by over 30% from 2015 to 2023 [6] - China's renewable energy generation capacity is the largest globally, with a significant decrease in coal's share of energy consumption by 12.6 percentage points over the past decade [6] Group 4: Development and High-Quality Growth - The pursuit of carbon reduction aligns with the goal of achieving high-quality development, reflecting a transformation in development methods [8] - The commitment to carbon reduction remains steadfast despite some countries retreating from their commitments, indicating a focus on sustainable and high-quality growth [8]