Research Article

Investigating the Influence of Anthropogenic Forcing on Observed Mean and Extreme Sea Level Pressure Trends over the Mediterranean Region

Figure 8

(a) Observed seasonal area mean change (grey bars) in the frequency of low SLP days (days with mean SLP less than the 10th percentile). (b) Observed seasonal area mean change (grey bars) in the frequency of high SLP days (days with mean SLP greater than the 90th percentile) over the period from 1974 to 2003 in comparison with GS signal pattern (GS) according to A1B scenario derived from INGV model (green bars). The vertical axes show trends in the number of low (high) days per decade. The red whiskers indicate the 90% uncertainty range of observed trends derived from natural (internal) variability estimated from 1,200-year control simulations (40 nonoverlapping 30 year segments).
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(a)
525303.fig.008b
(b)