小姨多鹤Study warns of longer extreme heat periods by century's end_我的网站
A | 据路透社报道，五角大楼周五表示，微软公司（Microsoft Corp.）赢得了价值17.6亿美元的五年期合同，为国防部、海岸警卫队和情报部门提供商业服务。合同的细节仍不清楚。 (ECNS) -- Hot days worldwide could experience around four additional hours of extreme heat by the end of the 21st century under a high-emissions scenario, according to a study led by Chinese researchers. Published in Nature Climate Change, the study found that traditional daily temperature indicators may overlook shorter periods of extreme heat, while hourly temperature analysis can provide a more detailed picture of heat exposure and associated risks. Researchers from Sun Yat-sen University and other institutions analyzed global hourly temperature data from 1981 to 2023, combining observational records with climate model projections to assess how extreme heat exposure could change in the future. The research team found that the duration of extreme heat increased by 62 hours per decade over the study period. Around 28% of extreme heat events occurred on days that would not have been classified as hot days based on conventional daily temperature indicators. Under a high-emissions scenario known as SSP5-8.5, the researchers projected that between 2070 and 2099, each hot day could experience around four additional hours of extreme heat compared with the 2001-2023 period. Days not classified as hot could also see increased periods of extreme heat. The study also found that low- and middle-income countries account for a disproportionately large share of both current and projected extreme heat exposure. Younger generations in low-income countries are expected to experience the greatest increase in lifetime exposure. Researchers said the findings could help improve heat-warning systems, strengthen assessments of health risks and support climate adaptation efforts. (By Helen Mo, intern Liu Shuangjing) Current article:http://dc04.linxiuhuaishuangniuzhenrua.bond/list_gqtpoq/2cm8p.html Published on:14:23:05 |
。今年，世界上最大的云客户将是美国国防部，该部门先前审查了投标审查，并将多年合同授予各个云提供商。该计划被称为联合企业防御计划（Jedi），旨在将国防部的大型计算系统转移到云端。该合同价值100亿美元，占云计算市场当前年收入的25%。五角大楼的合同将使340万用户和400万设备脱离私人服务器进入云端。使用五角大楼以外的服务器的安全风险被物理上独立的政府区域和混合解决方案所抵消，这些解决方案在必要时通过添加云来扩展内部服务器。人工智能、深入学习和其他技术（如虚拟现实）的好处对现代战争至关重要，因为实时数据将为士兵在战场上的任务提供信息，并帮助他们做好战斗准备。