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Figure 4


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Configurations secondaires de niveau du géopotentiel 500 hPa : a) Sibérie; b) Oscillation Nord Atlantique. Trait continu : corrélation positive; trait pointillé : corrélation négative; trait épais : corrélation supérieure à 0,5. Minor 500hPa geopotential height patterns: a) Siberia; b) North Atlantic Oscillation. Solid line: positive correlation; dashed line: negative correlation; bold line: correlation superior to 0.5.

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