thaw depth TOC in active layer air temperature soil T 0 cm soil T 5 cm soil T 10 cm soil T 15 cm soil T 20 cm soil T 25 cm soil T 30 cm soil T 35 cm soil T 40 cm soil T 45 cm soil T 50 cm site Latitude Longitude date [cm] [kgC m-2] [degree C] [degree C] [degree C] [degree C] [degree C] [degree C] [degree C] [degree C] [degree C] [degree C] [degree C] [degree C] SF3 72.339 126.2921 10.07.2019 84.7 40.4 17.1 17.5 17.7 15.9 14.1 12.3 10.7 9.3 7.4 6 4.8 SF3 72.339 126.2921 11.07.2019 76.7 37.8 14.7 15.5 14.5 13 11.7 10.6 9.7 8.8 7.7 7 6.2 SF3 72.339 126.2921 15.07.2019 75.3 37.1 10.9 10.8 10.1 8.9 8 7.3 6.6 6.1 5.7 5.1 4.5 SF3 72.339 126.2921 16.07.2019 76.3 37.6 11.5 11.7 10 8.3 7.1 6.4 5.7 5.1 4.6 3.6 SF3 72.339 126.2921 17.07.2019 76.9 37.9 5.8 8 8.8 7.8 7.2 6.7 6.4 6.1 5.8 5.4 SF3 72.339 126.2921 18.07.2019 76.9 37.9 9 10.4 9.5 7.2 5.4 3.9 2.8 2.1 1.2 0.4 0 SF3 72.339 126.2921 20.07.2019 78 38.3 23.3 21.8 16.1 10.7 8.1 6.6 5.8 5 4.6 3.9 SF3 72.339 126.2921 23.07.2019 78.6 38.6 27.2 23.3 17.2 13.7 11.1 9.1 7.8 7 6.3 5.5 4.9 SF6 72.339 126.2914 10.07.2019 50 18.7 28.5 26.9 20.8 16.6 12.9 10.3 8.2 6.4 5.1 3.9 2.5 0.9 SF6 72.339 126.2914 12.07.2019 52.3 19.5 15.6 14.7 12.6 11 9.6 8.5 7.4 6 4.6 3.3 2 SF6 72.339 126.2914 15.07.2019 53.7 20.1 10.1 9.6 8.3 7.3 6.5 6 5.2 4.4 3.2 2.1 1.2 SF6 72.339 126.2914 16.07.2019 54 20.2 10.4 10.5 9.2 7.6 6.3 5.1 4.3 3.5 2.5 1.6 0.7 SF6 72.339 126.2914 19.07.2019 52.3 19.5 SF6 72.339 126.2914 20.07.2019 51.7 19.3 20.8 17.8 13.2 10.5 8.1 6.5 5.1 4.2 3.1 2.1 1.3 SF6 72.339 126.2914 23.07.2019 54.7 20.5 26.7 24.6 15.6 11.2 8.5 6.9 5.4 4.1 2.7 1.6 0.7 TM1 72.3393 126.2929 09.07.2019 48.7 19.5 17.1 15.3 12.2 9.9 8.1 6.8 5.6 4.7 3.2 1.9 0.6 0.3 TM1 72.3393 126.2929 10.07.2019 49.2 19.7 TM1 72.3393 126.2929 11.07.2019 49.7 19.9 13.6 14.8 14.1 11.8 9.7 8.3 7.1 5.4 3.7 2 0.5 TM1 72.3393 126.2929 13.07.2019 54.7 22 17.6 18.6 15.7 12.3 9.8 7.9 6.2 4.9 3.9 2.8 2 TM1 72.3393 126.2929 16.07.2019 55.3 22.2 8.7 8.9 7.9 6.8 5.9 5.1 4.2 3.5 2.8 2.1 1.4 TM1 72.3393 126.2929 17.07.2019 55.7 22.4 5.6 7.1 6.7 6.1 5.5 5.3 4.9 4.6 3.3 2.8 1.5 TM1 72.3393 126.2929 18.07.2019 56 22.5 TM1 72.3393 126.2929 22.07.2019 57 22.9 13.9 16.2 13.6 10.9 8.7 7.4 6.3 5.8 5.3 4.6 4 TM1 72.3393 126.2929 23.07.2019 57.9 23.3 23.3 19.1 16.2 13.9 11.3 8.9 6.8 5.4 4.1 3.1 2.2 TM2 72.3393 126.2919 10.07.2019 85.7 21.3 28.5 29 24.6 21.3 18.6 16.2 14.6 13.3 12.1 11 10.1 9.1 TM2 72.3393 126.2919 13.07.2019 90.3 22.2 15 15.4 12.4 11.3 10.6 9.8 9.3 8.6 8 7.4 6.6 6.3 TM2 72.3393 126.2919 16.07.2019 93.7 22.9 8.6 8.3 7.9 7.4 7 6.7 6.5 6.2 5.8 5.3 5.2 TM2 72.3393 126.2919 22.07.2019 95.7 23.4 11.9 10.8 7.8 6.6 6 5.8 5.6 5.4 4.9 4.5 TM2 72.3393 126.2919 23.07.2019 96 23.5 28.5 24.4 16.6 13.3 11 9.5 8.2 7.4 6.7 5.9 5.6