Infilled air temperature data for D1 chart recorder, 1952 - 2018, daily

• Main Authors: Kittel, Timothy, White, Caitlin, Hartman, Michael, Chowanski, Kurt, Ackerman, Todd, Williams, Mark, Losleben, Mark
• Format: Dataset
• Language: English
• Published: Environmental Data Initiative 2019
• Subjects: Tundra
• Online Access: https://dx.doi.org/10.6073/pasta/1b62f2cda71579c4870ac5c1af71e6f3; https://portal.edirepository.org/nis/mapbrowse?packageid=knb-lter-nwt.187.2

Daily minimum and maximum surface air temperature data have been collected at the D1 climate station (3739 m asl) almost continuously from 1952 to the present. D1 is on a narrow, exposed ridge on the westernmost part of Niwot Ridge, 2.6 km east of and ca. 200 m lower in elevation than the Continental Divide. Surrounding vegetation is low-stature alpine tundra. Temperature minima and maxima were measured with a chart-recording hygrothermograph housed in a Stevenson screen. Hygrothermograph records were calibrated at the time of chart changes against liquid-in-glass thermometers. Processing included quality checks and infilling of missing daily data (see Methods).