http://bolin.su.se/data/tarfala-kirchner-2023-monthly-temperature-1 Nina Kirchner, Jamie Barnett, and TRS staff Bolin Centre Database 2023 Datafile Atmosphere Temperature Air temperature Tarfala Monthly mean air temperature Earth science > Atmosphere > Atmospheric temperature > Surface temperature > Air temperature Nina Kirchner 2023-12-15T12:57:41+00:00 English 1 The dataset consists of a csv-file containing 3 values each for the years 1946 – 1964, representing monthly averaged June, July and August air temperatures. Missing values are indicated by NaN. Further, the file contains 12 values each for the years 1957 – 2022, representing monthly averaged temperatures for all months of the year. Missing values are indicated by NaN and occur in the years 2009 and 2022. Currently, air temperatures at Tarfala Research Station are acquired by a HC2S3 temperature and relative humidity sensor manufactured by Rotronic as part of the station’s automated weather station. Measurements are taken hourly, from which daily and further, monthly, averages were computed. The sensor is mounted approximately 2 m above ground, at an elevation of 1143 m above sea level, and at geographical coordinates N 7537422, E 651517 (SWEREF99 TM coordinate system). This dataset allows to calculate annual and seasonal averages, among others. Excluding the years for which data is partially missing (2009, 2022), annual averages temperature was lowest in 1966 (-5.9 °C), and warmest in 2016 (- 1.7 °C). The summer season – June, July, August – was coldest in 1975 (3,3 °C) and warmest in 2002 (8,7 °C). Mean July temperatures have been above 10 °C in the years 2003 (11,7 °C), 2014 (12,6 °C), 2018 (12,8 °C) and 2021 (10,2 °C): This is of interest as one of the definitions of “Arctic” is that July average temperatures do not exceed 10 °C.