Climate Dynamics

, Volume 16, Issue 5, pp 321–331 | Cite as

A method to aid in the determination of the sampling size of AGCM ensemble simulations

  • M. F. Wehner


Historically, the high computational expense of performing lengthy climate simulations has limited the number of possible realizations. Here, 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.


Expense Circulation Model General Circulation General Circulation Model Strong Dependence 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • M. F. Wehner
    • 1
  1. 1.Program for Climate Model Diagnosis and Intercomparison Lawrence Livermore National Laboratory, Livermore, CA 94551, USA E-mail: mwehner@llnl.govUS

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