135
Percentage vallunce due to SSTs. JJJ\ '1'leon msl.
90S~ ______________ ~ ______________ ~ ______________ -L ______________ ~
o
90E
180
90W
Percentoge vorionce due to SSTs. JJA meon pmsl, 10 -yr run means.
t ·
~ . ~I • - 'j
.
,
,
.. ,
_
• ~,
_
A
o
20
40
60
80
100
Figure 25: As fig 23 but for JJA.
with seasonal fluctuations. In winter, for example, there are localised regions over the Indian Ocean, eastern Pacific, tropical Atlantic and so on,
where the percentage of variance exceeds 60%, but in other areas, such as
the north Atlantic, it appears negligible. This latter result might cause sur-
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