期刊名称：Tellus A: Dynamic Meteorology and Oceanography
电子版ISSN：1600-0870
出版年度：1999
卷号：51
期号：2
页码：273-288
DOI：10.3402/tellusa.v51i2.12321
摘要：The non-modal transient properties of the Eady baroclinic model with a simple heating parameterizationare examined. The time-dependent non-modal behavior of the moist baroclinicmodel is investigated by calculating the energy amplification of optimal perturbations for relevanttime-scales and by calculating the energy evolution of random initial conditions. Enhancednon-modal growth on time-scales of 1–2 days is present on all length-scales considered.Exponentially neutral length-scales present algebraic growth which is substantially enhancedin the presence of condensational heating. On time-scales of 1–2 days, maximum growth occurson shorter length-scales than those predicted by previous normal mode calculations. Heatingis found to reduce the time required for uncorrelated random perturbations to organize andgrow, though for moderate heating, this time is still relatively long.
