Alaskan Historical Climatology Network (HCN) Serial Temperature and Precipitation Data

This database is a companion to the Historical Climatology Network (HCN) database for the contiguous United States. The database contains monthly temperature (minimum, maximum, and mean) and total monthly precipitation data for 47 Alaskan stations. These data were derived from a variety of sources including the National Climatic Data Center archives, the state climatologist for Alaska, and published literature. The period of record varies by station. The longest record is for the Sitka Magnetic Observatory (1828) and most records extend through 1990. Unlike the HCN database for the contiguous U.S., adjustments have not been made to these climate records for time-of-observation differences, instrument changes, or station moves. The data are in three files [one data file that contains all four climate variables, one station inventory file, and one station history file]. The file sizes range from 3.5 kB to 1.7 MB.

本数据库为美国本土历史气候网络（Historical Climatology Network，HCN）数据库的配套数据集。本数据集收录了47个阿拉斯加气象站的月气温数据（含最低气温、最高气温与平均气温）及月总降水量数据。该数据集的数据来源于多类渠道，包括美国国家气候数据中心（National Climatic Data Center）档案、阿拉斯加州气候学家提供的资料以及已发表的学术文献。各站点的观测记录时长各不相同，其中锡特卡地磁观测台（Sitka Magnetic Observatory）的记录序列最长，始于1828年，且多数记录延续至1990年。与美国本土历史气候网络数据库不同，本数据集未针对观测时间差异、仪器更换或站点迁移等情况对气候记录进行校正调整。数据集包含三类文件：分别为包含全部四项气候变量的数据文件、站点信息清单文件以及站点历史档案文件。文件大小范围为3.5 kB至1.7 MB。