USGS Landsat

This joint NASA/USGS program provides the longest continuous space-based record of Earth’s land in existence. Every day, Landsat satellites provide essential information to help land managers and policy makers make wise decisions about our resources and our environment. Data is provided for Landsats 1, 2, 3, 4, 5, 7, 8, and 9 (excludes Landsat 6).As of June 28, 2023 (<a href="https://www.usgs.gov/landsat-missions/news/changes-coming-landsats-simple-notification-service-amazon-web-service">announcement</a>), the previous single SNS topic <code>arn:aws:sns:us-west-2:673253540267:public-c2-notify</code> was replaced with three new SNS topics for different types of scenes.

本联合NASA/USGS项目提供了目前所存续的关于地球陆地最长连续的太空数据记录。每日，Landsat卫星提供关键信息，协助土地管理者与政策制定者就我国资源与环境做出明智决策。数据涵盖了Landsat 1至9号卫星（不包括Landsat 6号卫星）。截至2023年6月28日（<a href="https://www.usgs.gov/landsat-missions/news/changes-coming-landsats-simple-notification-service-amazon-web-service">公告</a>），原有的单一SNS主题<code>arn:aws:sns:us-west-2:673253540267:public-c2-notify</code>已被替换为三个新的SNS主题，分别针对不同类型的场景。