Table 1 Summary of simulations conducted in this study

From: Global and Arctic climate sensitivity enhanced by changes in North Pacific heat flux

Simulation name

Q-flux modification (global-equivalent W/m2)

Topography modification

Global surface temperature (K)

Δ Global surface temperature (K)

Δ Arctic surface temperature (K)

Δ Arctic sea-ice fraction (%)

Δ Arctic low-cloud fraction (%)

Δ Arctic moisture convergence (%)

Arctic amplification factor

Climate feedback parameter α (W/m2K)

Preindustrial Control

—

—

286.56 ± 0.02

—

—

—

—

—

—

—

NP-Warm

North Pacific +1

—

287.51 ± 0.02

0.95 ± 0.03

3.08 ± 0.20

−7.36 ± 0.54

12.4 ± 0.89

18.23 ± 2.47

3.25

1.05

NEP-Warm

Northeast Pacific +1

—

287.47 ± 0.05

0.91 ± 0.24

2.55 ± 0.68

−5.81 ± 1.51

9.99 ± 2.70

17.1 ± 6.25

2.80

1.10

NA-Warm

North Atlantic +1

—

287.35 ± 0.02

0.79 ± 0.02

2.12 ± 0.20

−4.98 ± 0.56

9.5 ± 0.87

15.14 ± 2.53

2.68

1.27

NP-Warm/NA-Cool

North Pacific +1 North Atlantic −1

—

286.53 ± 0.02

−0.030 ± 0.03

0.34 ± 0.22

−0.31 ± 0.56

−0.33 ± 0.93

−0.05 ± 2.26

—

—

NP-Cool/NA-Warm

North Pacific −1 North Atlantic +1

—

286.18 ± 0.03

−0.39 ± 0.03

−1.88 ± 0.14

4.07 ± 0.21

4.80 ± 0.29

−4.84 ± 2.28

—

—

NP-Cool

North Pacific −1

—

284.93 ± 0.02

−1.63 ± 0.02

−5.56 ± 0.15

9.96 ± 0.21

−17.35 ± 0.29

−24.69 ± 1.57

3.41

0.61

NA-Cool

North Atlantic −1

—

285.45 ± 0.02

−1.11 ± 0.02

−3.29 ± 0.14

6.18 ± 0.22

−11.65 ± 0.29

−18.03 ± 1.62

2.96

0.90

Control Notopo

—

Global land topography = 0

286.94

—

—

—

—

—

—

—

NP-Warm-Notopo

North Pacific +1

Global land topography = 0

287.97

1.03

3.23

−7.33

—

18.60

3.14

0.97

NA-Warm-Notopo

North Atlantic +1

Global land topography = 0

287.81

0.87

2.43

−4.90

—

16.36

2.79

1.15

  1. Reported errors are the 95% confidence interval calculated as the standard error multiplied by 1.96, accounting for autocorrelation in time series (see Methods)