130 Keith Haines
1.0
a)
0.8
....
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rn
·E 0.6
ro
....
ro
"C I
ăi 0.4
"C
o
E
0.2
0.0
·40 ·20
20 40
60
80 100 120 140 160 180 200 220 240 260 280 300 320 340 360
Time in days sinee 0000 1 sI January 1993
10Jm· 3
30
b)
~25
' 00
c
"
'O 20
>~
" c
" 15
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~
c
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c
' "
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-40 ·20
20 40 60
80 100 120 140 160 180 200 220 240 260 280 300 320 340 360
Time . days from 0000 lst January 1993
Fig.7.8 (a) Model-data misfit averaged globally, solid line, and for the Gulf Stream,
dashed line. Values are given as a fraction ofthe initial, pre-assimilation values: Global 73.1
cm 2 , Gulf Stream 306.1 cm 2 . (b) Evolution of volume average kinetic energy in the
assimilating model. Note that assimilation begins at day -20 (llth Dec. 1992).