Circulation control and fluid flow regimes in a radiatively forced baroclinic model
作者:
IvanE. Terez,
R.Lee Panetta,
期刊:
Geophysical & Astrophysical Fluid Dynamics
(Taylor Available online 2000)
卷期:
Volume 93,
issue 1-2
页码: 1-38
ISSN:0309-1929
年代: 2000
DOI:10.1080/03091920008203720
出版商: Taylor & Francis Group
关键词: Fluid flow regimes;Turbulence;Thermal relaxation;Baroclinic life cycles;Non-linear upscale transfer
数据来源: Taylor
摘要:
Numerical experiments were carried out using a quasigeostrophic baroclinic model to investigate sensitivity of the circulation, eddy variability and jets to the thermal forcing and their meridional structure. Two different flow regimes were revealed: a turbulent regime with strong upscale energy transfer, strong indirect thermal cell and no evident life cycles and a radiatively arrested transfer regime with vanishing non-linear transfer term, indirect thermal circulation cell and clear life cycles. Numerical experiments showed sharp transitions from one to two and from two to three jets when the width of the baroclinically unstable region increased. It was found that the eddy heat fluxes and kinetic energy dropped when a new jet evolved in the system.
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