Figure 15
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Tendance moyenne (en mgp) du haut géopotentiel 500 hPa au printemps (mars-avril-mai) et aux mois de mars, avril et mai sur la période 1971-2002; ligne continue : tendance positive; ligne discontinue : tendance négative (d’après les données de rénalyses NCEP/NCAR). Average trend (in PGM) of 500 hPa geopotential height in the spring (March-April-May) and for March, April and May over the 1971-2002 period; solid line: positive trend, dashed line: negative trend (based on NCEP/NCAR reanalyses).
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