Table 2: Linear temperature trends (°C per decade) in different time periods for stations in the Svalbard region. Trends significant at the 5% level are bold (Mann-Kendall nonparametric test [21]).

LocationAnnualWinterSpringSummerAutumn

1920–1942Svalbard Airport*0.341.230.09−0.280.47
Bjørnøya0.14−0.55−0.350.180.66

1943–1965Ny-Ålesund*0.26−1.480.070.040.39
Svalbard Airport*0.35−1.76−0.22−0.000.58
Bjørnøya0.33−0.91−0.19−0.290.14

1966–1988Ny-Ålesund*0.380.540.730.100.51
Svalbard Airport*0.520.720.960.270.48
Hopen0.260.000.490.140.57
Bjørnøya0.340.530.710.030.36

1989–2011Ny-Ålesund0.992.520.460.500.78
Svalbard Airport1.252.880.600.761.14
Hopen1.212.890.460.181.50
Bjørnøya0.912.010.860.321.14

1975–2011Ny-Ålesund0.731.360.600.330.53
1975–2011Svalbard Airport1.041.660.980.550.86
1975–2011Hopen1.101.761.020.431.00
1975–2011Bjørnøya0.761.300.590.390.62

1935–2011Ny-Ålesund*0.11−0.020.270.090.07
1912–2011Svalbard Airport*0.250.250.460.110.19
1946–2011Hopen0.310.310.440.220.23
1920–2011Bjørnøya0.110.020.290.080.05

*The Svalbard Airport and Ny-Ålesund series are homogenised composites from other sites before 1975, respectively, 1969 [11].