report/ab47.html

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<p><h1>Report 47:&nbsp; Determination of the Sampling Size of
AGCM Ensemble Simulationstions</h1>
<ul><b>Wehner, </b>Michael F.
<p>September 1998, 24 pp.&nbsp;
<hr>
<br>Historically, the high computational expense of performing lengthy
climate simulations has limited the number of realizations in ensemble
calculations. In this paper, we exploit the computational advantage of
a recently developed parallel atmospheric general circulation model (AGCM)
to determine the number of realizations required to calculate the model's
statistics to a specified degree of certainty. Using standard statistical
analysis techniques, this minimum ensemble size is found to be highly dependent
on which output field is under examination. A strong dependence on location,
season and averaging is also revealed. <i><a href="pdf/47.pdf">(pdf file)</a></i>
</ul>

<p><font size=-1>UCRL-MI-123395</font>
<br>&nbsp;