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Table 2

Overview of climate indices and data source

PredictorsPredictor definitionOriginData periodData source
PDO SSTA anomaly in North Pacific Ocean, (north of 20°N latitude) Pacific Ocean 1914–2015 ERSST (http://climexp.knmi.nl/
IPO SST anomaly in North and South Pacific Ocean (includes south of 20°N latitude) Pacific Ocean 1914–2015 HadISST1 (http://climexp.knmi.nl/
NINO3.4 Average SST anomaly over central Pacific Ocean (5°S–5°N, 120°–170°W) Pacific Ocean 1914–2015 HadISST1 (http://climexp.knmi.nl/
IOD West Pole Index (10°S–10°N, 50°–70°E) -East Pole Index (10°S–0°, 90°–110°E) Indian Ocean 1914–2015 HadISST (http://climexp.knmi.nl/
EMI Coupled ocean-atmosphere phenomenon in the tropical Pacific Pacific Ocean 1914–2015 HadISST (http://www.jamstec.go.jp/frcgc/research/d1/iod/modoki
PredictorsPredictor definitionOriginData periodData source
PDO SSTA anomaly in North Pacific Ocean, (north of 20°N latitude) Pacific Ocean 1914–2015 ERSST (http://climexp.knmi.nl/
IPO SST anomaly in North and South Pacific Ocean (includes south of 20°N latitude) Pacific Ocean 1914–2015 HadISST1 (http://climexp.knmi.nl/
NINO3.4 Average SST anomaly over central Pacific Ocean (5°S–5°N, 120°–170°W) Pacific Ocean 1914–2015 HadISST1 (http://climexp.knmi.nl/
IOD West Pole Index (10°S–10°N, 50°–70°E) -East Pole Index (10°S–0°, 90°–110°E) Indian Ocean 1914–2015 HadISST (http://climexp.knmi.nl/
EMI Coupled ocean-atmosphere phenomenon in the tropical Pacific Pacific Ocean 1914–2015 HadISST (http://www.jamstec.go.jp/frcgc/research/d1/iod/modoki
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