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Full text: 49: System Nordsee : 2006 & 2007 : Zustand und Entwicklungen

2 Atmosphärenphysik 
42 
System Nordsee 
Vorticity* (hPa) 
Velocity (m/s) 
80 
64 - 
32 - 
16 
-32 - 
-64 - 
10 
-L 
0 
_L 
-10 
_L 
~ + + + + 
c + A > ++++f + + GAtE + + * + / + 
+I-./' BinSize 8 x 8 n +/ 
OfikunW' ^ V + 
1971 -2000 U 
o - DIR + 
225 
180 
- 135 
- 90 
< 
o 
45 
Q. 
CD 
CQ 
CL 
0) 
- -45 
-90 
-135 
- -180 
16 0 -16 
Velocity* (hPa) 
Abb.2-2: Rel. Häufigkeitsverteilung der täglichen Zirkulationszustände im Zeitraum 1971 - 
2000 mit Klassifizierungskriterien. Demarkationslinien (grün) zwischen Richtungs- und 
Hybridsektoren (£*/!/* = ± 1) sowie Hybrid- und Rotationssektoren (£*/!/* = ± 2). Schwell 
werte G* thr für Sturmellipsen (blau): 28,3 (gale), 36,6 (severe gale), 44,6 hPa (very severe 
gale); Halbachsen: a* = 2G* thr , b* = a*/2. Obere und rechte Achsenskalierung: V = 0,62V*, 
£ = 2,72£*. 
Fig. 2-2: Percent frequency distribution of daily circulation states for the period 1971 -2000 
together with classification criteria. Boundary lines (green) separating directional from 
hybrid (£*/!/* = ±1), and hybrid from rotational sectors (£*/!/* = ± 2). Thresholds G* thr for 
elliptical gale shells (blue): 28.3 (gale), 36.6 (severe gale), 44.6 hPa (very severe gale); half 
axes: a* = 2G* thr , b* = a*/2. Top and right axes: V =0.62 V*, £ = 2.72 £*.
	        
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