Transient chaotic mixing during a baroclinic life cycle

被引：27

作者：

von Hardenberg, J ^{[1
]}

Fraedrich, K

Lunkeit, F

Provenzale, A

机构：

[1] Univ Hamburg, Inst Meteorol, Hamburg, Germany

[2] CNR, Ist Cosmogeofis, I-10133 Turin, Italy

来源：

CHAOS | 2000年 / 10卷 / 01期

关键词：

D O I：

10.1063/1.166491

中图分类号：

O29 [应用数学];

学科分类号：

070104 ;

摘要：

We discuss how atmospheric eddies affect transport and mixing of tracers at midlatitudes. To this purpose, we study baroclinic life cycles in a simple dynamical model of the atmosphere. We consider the trapping properties of the developing eddies and the characteristics of meridional transport, and we identify regions of increased mixing. Although the flow is in principle three-dimensional, we illustrate how some of the concepts developed in the study of two-dimensional chaotic advection provide useful information on tracer dynamics in more complicated flows. (C) 2000 American Institute of Physics. [S1054-1500(00)02401-0].

引用

页码：122 / 134

页数：13

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[32] FRACTAL MEASURES OF PASSIVELY CONVECTED VECTOR-FIELDS AND SCALAR GRADIENTS IN CHAOTIC FLUID-FLOWS [J].