Numerical experiments were performed on NCAR’s CRAY YMP, J90, and T3D supercomputers. Comments on the manuscript by Greg McFarquhar, Mitch Moncrieff, Piotr Smolarkiewicz, Xiaoqing Wu, and Jun-Ichi Yano are acknowledged, as is the editorial assistance of Jim Pasquotto. This work is supported by NCAR’s Clouds in Climate Program (CCP). The National Center for Atmospheric Research is operated by the University Corporation for Atmospheric Research under sponsorship of the NSF.
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