NASA-ISRO合成孔径雷达

参观NISAR

ByNASA中文 2023年2月7日

Officials from NASA, the Indian Space Research Organisation (ISRO), and the Indian Embassy visit a clean room at NASA’s Jet Propulsion Laboratory on Feb. 3, 2023, to view the scientific instrument payload for the NASA-ISRO Synthetic Aperture Radar (NISAR) mission. The NISAR mission—a joint effort between NASA and ISRO—will measure changes to Earth’s land ice surfaces down to fractions of an inch. Data collected by this satellite will help researchers monitor a wide range of changes critical to life on Earth in unprecedented detail. Learn more about the visit and what NISAR will do. Image Credit: NASA/JPL-Caltech 2023年2月3日，NASA、印度太空研究组织（ISRO）和印度大使馆的官员参观了NASA喷气推进实验室的一间洁净室，以查看NASA-ISRO合成孔径雷达（NISAR）任务的科学仪器有效载荷。 NASA和ISRO联合开展的NISAR任务将测量地球陆地冰层表面的变化，精确到一英寸。这颗卫星收集的数据将帮助研究人员以前所未有的细节监测对地球生命至关重要的广泛变化。了解关于这次访问和NISAR将做什么的更多信息。图片来源: NASA/JPL-Caltech

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2021年度灾难：回顾

ByNASA中文 2021年12月31日2021年12月31日

In 2021, Hurricane Ida left over 1 million people without power, tornadoes tore across the American Midwest, volcanoes forced people to evacuate their homes, wildfires covered the American West and unusual flooding wreaked havoc on Central Europe. 2021年，飓风艾达导致100多万人断电，龙卷风席卷美国中西部，火山爆发迫使人们撤离家园，野火覆盖美国西部，罕见的洪水对中欧造成严重破坏。 Some characteristics of natural hazards, such as hurricanes, floods and wildfires, have been historically predictable and have informed disaster preparation. However, with human emissions of greenhouse gases increasing Earth’s temperature, we’re seeing changes in those characteristics: wildfire and drought seasons are lengthening, hurricanes and rainfall are becoming more intense, and coastal flooding is increasing. 自然灾害的一些特征，如飓风、洪水和野火，在历史上是可以预测，并为备灾提供了信息。然而，随着人类排放的温室气体使地球温度升高，我们正在看到这些特征的变化：野火和干旱季节正在延长，飓风和降雨变得更加强烈，沿海洪水也正在增加。 By sponsoring application science and fostering domestic and international partnerships, the NASA Disasters program seeks to use its Earth observation data to enable disaster-resilient communities in a changing climate. 通过资助应用科学和培育国内和国际伙伴关系，NASA灾难项目寻求利用其地球观测数据，使社区能够在不断变化的气候中抵御灾害。 For details…