Correlation Coefficient

Climatic indices

Anomaly in surface air temperature over Western Europe in the duration time of heat waves over western Europe

Case (1)

Case (2)

Case (3)

Case (4)

NAO

−0.85053*

0.250064

0.369849

0.786557*

SOI

−0.44131

0.110302

0.266473

0.452762

EL?NINO 3.4

−0.54957**

0.286092

0.549594**

−0.973401*