Database for ground temperature and freezing depth in Japan

Ground temperature data in Japan, obtained from as early as 1888 to date, were collected, digitized in the comma-separated-value format, and quality-controlled with respect to physical and meteorological contexts. Hourly station data on ground temperatures from 34 Japan Meteorological Agency sites and 7 sites of the Agricultural Research Department of the Hokkaido Research Organization were included, along with the accompanying meteorological observation data. The dataset was published by the Arctic Data archive System and made available for non-commercial use.