Climate Indicator U.S. Temperatures, 1901–2021 (EPA 2022)

Shared Enterprise Geodata and Services (SEGS) provides an EPA-curated collection of recommended geodata assets that are nationally relevant and support the Agency’s mission to protect human health and the environment. By connecting EPA users with curated datasets and promoting service reuse, SEGS aims to enhance information access, reduce data-storage costs, and improve the consistency and quality of data at the US EPA. Developed by the U.S. EPA Office of Air and Radiation, this content item shows how annual average air temperatures have changed in different parts of the United States since the early 20th century (since 1901 for the contiguous 48 states and 1925 for Alaska).. The data are shown for climate divisions, as defined by the National Oceanic and Atmospheric Administration (2021). For more information, please visit the U.S. EPA climate change indicators webpage. These data and their corresponding metadata records can be downloaded from Data.gov.共享企业地理数据与服务（Shared Enterprise Geodata and Services，SEGS）提供由美国环境保护署（United States Environmental Protection Agency，EPA）遴选整理的一批具有全国适用性、契合该机构保护人类健康与环境的使命的推荐地理数据资产。通过对接EPA用户与经遴选整理的数据集，并推动服务复用，SEGS旨在提升信息获取效率、降低数据存储成本，并提升美国环境保护署内部数据的一致性与质量。本数据集由美国环境保护署空气与辐射办公室开发，展示了20世纪初以来美国各区域的年平均气温变化情况——其中美国本土48州的数据起始于1901年，阿拉斯加地区的数据起始于1925年。数据以美国国家海洋和大气管理局（National Oceanic and Atmospheric Administration）2021年定义的气候分区为单位呈现。如需了解更多信息，请访问美国环境保护署气候变化指标专题网页。本数据集及其对应的元数据记录均可从Data.gov下载获取。