172
(b)
(a )
(e )
(d)
Figure 5: 500mb height (m) and variance of the averages of the 500 mb height field for
a 100,000 day run for perpetual January R15 GFDL AGCM (a) Mean 500mb field (b)
Variance over the entire run (c) Variance of6 day averages (d) Variance of 16 day averages
(Courtesy Gregor Nitsche).