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Chapter 14: Patterns in Time: SSA and MSSA
Figure 14.1: ST-EOFs 7 and 8 in each channel as a function of lag (in days),
for the 700 hPa geopotential height over the Atlantic area, using a sampling
rate of 5 days and a window length of 200 days. The 10 channels represent
the coefflcient of projection of the ST-EOFs on the first 10 spatial EOFs.
ST-EOFs are dimensionless and normalised in such a way that the sum of
squares of their coefflcients is 1. (After Plaut and Vautard, 1994).
0.10
Charmeil
0.10
0.05
0.05
0.00
0.00
-0.05
-0.05
-0.10
-0.10
0
SO
100
ISO
200
0.10
Channel3
0.10
0I1IltIe14
0.05
0.05
0.00
0.00
~
-0.05
-0.05
-0.10
-0.1 0
0
50
0
0.10
Channei S
0.10
ClIanoel6
0.05
0.05
0.00
~
0.00
~
-0.05
-0.05
-0.10
-0.10
0
0
0.10
Channel7
0.10
Olanne18
0.05
0.05
0.00
...,..;
0.00
-0.05
-0.05
-0.10
-0.10
0
0
SO
200
0.10
Channel9
0.10
0wmel10
0.05
0.05
0.00
0.00
·0.05
-0.05
-0.10
-0.10