Extended Data Table 2 Summary of the mean Q1-3 and mean KS D-values for the eight ecosystem variables (air temperature, TA; total precipitation, TP; snow depth, SD; and soil moisture, SM; vegetation biomass, VB; soil carbon, SC net primary production, NPP; and heterotrophic respiration, RH). ‘INTERACT’ refers to the INTERACT network with all stations above 59°N included, ‘INTERACTWR’ to the INTERACT network without the Russian stations, and ‘Arctic 2020’ to the pan-Arctic conditions during the period 2016–2020. ‘Arctic 2100’ refers to the projected shift in ecosystem conditions between contemporary (2016–2020) and future (2096–2100)
Variable | INTERACT | INTERACTWR | Arctic 2020 | |
Q2 (Medians) | TAS (˚C) | −5.32 | −4.57 | −7.7 |
PR (mm y−1) | 588 | 625 | 490 | |
SD (m) | 0.302 | 0.33 | 0.277 | |
SM (%) | 31.6 | 30 | 32.8 | |
VB (kg C m−2) | 0.349 | 0.163 | 0.559 | |
SC (kg C m−2) | 5.76 | 4.92 | 9.52 | |
NPP (g C m−2) | −48.6 | −20.2 | −46.1 | |
RH (g C m−2) | 47.3 | 20.6 | 43.9 | |
Variable | INTERACT | INTERACTWR | Arctic 2020 | |
Q1 | TAS (˚C) | −9.62 | −9.99 | −10.4 |
PR (mm y−1) | 402 | 408 | 366 | |
SD (m) | 0.229 | 0.253 | 0.225 | |
SM (%) | 24.3 | 24 | 26.3 | |
VB (kg C m−2) | 0.0192 | 0.00005 | 0.0624 | |
SC (kg C m−2) | 2.04 | 0.22 | 2.87 | |
NPP (g C m−2) | −93.5 | −91 | −87.7 | |
RH (g C m−2) | 3.85 | 0.0205 | 7.77 | |
Variable | INTERACT | INTERACTWR | Arctic 2020 | |
Q3 | TAS (˚C) | −0.532 | −0.0927 | −3.05 |
PR (mm y−1) | 773 | 803 | 633 | |
SD (m) | 0.44 | 0.58 | 0.369 | |
SM (%) | 34.4 | 33.1 | 34.7 | |
VB (kg C m−2) | 2.34 | 1.89 | 2.52 | |
SC (kg C m−2) | 12.5 | 8.54 | 18.4 | |
NPP (g C m−2) | −3.71 | −0.00365 | −4.39 | |
RH (g C m−2) | 91.8 | 81.8 | 91.2 | |
Variable | INTERACT | INTERACTWR | Arctic 2100 | |
D-values | TAS | 0.206 | 0.271 | 0.621 |
PR | 0.214 | 0.294 | 0.31 | |
SD | 0.13 | 0.23 | 0.363 | |
SM | 0.177 | 0.236 | 0.121 | |
VB | 0.123 | 0.21 | 0.206 | |
SC | 0.183 | 0.294 | 0.0726 | |
NPP | 0.125 | 0.215 | 0.296 | |
RH | 0.122 | 0.227 | 0.3 |
