阅读理解:全球至少一半冰川将在本世纪消失 2023届高考英语外刊阅读训练

23年高考英语外刊阅读训练——阅读理解：全球至少一半冰川将在本世纪消失 本文节选自：The Guardian（卫报） 发布时间：2023.01.06 作者：Phoebe Weston 原文标题：Half of glaciers will be gone by 2100 even under Paris 1.5C accord, study finds Half the planet’s glaciers will have melted by 2100 even if humanity sticks to goals set out in the Paris climate agreement, according to research that finds the scale and impacts of glacial loss are greater than previously thought. At least half of that loss will happen in the next 30 years. Researchers found 49% of glaciers would disappear under the most optimistic scenario of 1.5C of warming. However, if global heating continued under the current scenario of 2.7C of warming, losses would be more significant, with 68% of glaciers disappearing, according to the paper, published in Science. There would be almost no glaciers left in central Europe, western Canada and the US by the end of the next century if this happened. This will significantly contribute to sea level rise, threaten the supply of water of up to 2 billion people, and increase the risk of natural hazards such as flooding. The study looked at all glacial land ice except for Greenland and Antarctic ice sheets. If temperature increases are limited to 1.5C of warming, average sea levels would increase by 90mm (3.5in) from 2015 to 2100, but with 2.7C of warming, glacial melt would lead to around 115mm of sea level rise. These scenarios are up to 23% more than previous models had estimated. Mountain glacier melt is believed to contribute to more than a third of sea level rise. A lot of this loss is unavoidable, but the magnitude of loss is directly related to temperature increases, so acting on the climate crisis is key. Researchers wrote in the paper: “The rapidly increasing glacier mass losses as global temperature increases beyond 1.5C stresses the urgency of establishing more ambitious climate pledges to preserve the glaciers in these mountainous regions.” 阅读理解： What is the topic of the article? A. Climate cha