Siberian High (SH) index (Gong et al., 2002): MODES forecast ------------------------------------------------------------ Observation (NECP-I) 2017Sep -1.13 2017Oct 0.19 2017Nov -0.49 2017Dec 0.75 2018Jan 0.87 2018Feb 1.04 ------------------------------------------------------------ Prediction (MODES) ------------------------------------------------------------ * BCC CFS EC 2018Mar -1.45 -2.22 -1.29 2018Apr 0.12 -0.47 -0.26 2018May -0.85 -2.00 -0.82 2018Jun -1.50 -0.84 1.10 2018Jul 0.53 -0.32 0.03 2018Aug -0.87 -0.82 -0.12 2018Sep -0.50 -0.67 0.49