It is a pleasure to acknowledge useful discussions with G. Eyink of the Johns Hopkins University at the IPAM Data Assimilation meeting at UCLA in February 2005 where this work was first presented. The author also wishes to acknowledge the work of the PUMA group at the Meteorologisches Institut, Universitaet Hamburg, and in particular, Klaus Fraedrich for help in running this atmospheric model. The comments of three reviewers are gratefully acknowledged, as they resulted in a much improved manuscript. This work was supported by NSF Grants CMG 0417728 and ATM 0430889.
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