文章基本信息

标题：A dynamical systems characterization of atmospheric jet regimes
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作者：Gabriele Messori ; Nili Harnik ; Erica Madonna 等
期刊名称：Earth System Dynamics
电子版ISSN：2190-4995
出版年度：2021
卷号：12
期号：1
页码：233-251
DOI：10.5194/esd-12-233-2021
语种：English
出版社：Copernicus Publications
摘要：Atmospheric jet streams are typically separated into primarily “eddy-driven” (or polar-front) jets and primarily “thermally driven” (or subtropical) jets. Some regions also display “merged” jets, resulting from the (quasi-)collocation of the regions of eddy generation with the subtropical jet. The different locations and driving mechanisms of these jets arise from very different underlying mechanisms and result in very different jet characteristics. Here, we link the current understanding of dynamical jet maintenance mechanisms, mostly arising from conceptual or idealized models, to the phenomena observed in reanalysis data. We specifically focus on developing a unitary analysis framework grounded in dynamical systems theory, which may be applied to both idealized models and reanalysis, as well as allowing for direct intercomparison. Our results illustrate the effectiveness of dynamical systems indicators to diagnose jet regimes.