Arctic and Antarctic cells in the troposphere

The three-cell model, including the Hadley, Ferrel, and Polar cells in each of two hemispheres, has been accepted for a long time and the strongest Hadley cell has been used to study the climate change in recent years. However, two questions, why the upper level flow of Ferrel cell does not match ob...

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Bibliographic Details
Published in:Theoretical and Applied Climatology
Main Authors: Qian, Weihong, Wu, Kaijun, Liang, Haoyuan
Other Authors: Qian, WH (reprint author), Peking Univ, Sch Phys, Dept Atmospher & Ocean Sci, Beijing 100871, Peoples R China., Peking Univ, Sch Phys, Dept Atmospher & Ocean Sci, Beijing 100871, Peoples R China., Guangxi Teachers Educ Univ, Sch Geog & Planning, Nanning 530001, Peoples R China.
Format: Journal/Newspaper
Language:English
Published: THEORETICAL AND APPLIED CLIMATOLOGY 2016
Subjects:
HADLEY CIRCULATION
GENERAL-CIRCULATION
POLEWARD EXPANSION
REANALYSIS
Antarctic
Arctic
Antarc*
Climate change
Online Access:https://hdl.handle.net/20.500.11897/492085
https://doi.org/10.1007/s00704-015-1485-z
Description
Summary:The three-cell model, including the Hadley, Ferrel, and Polar cells in each of two hemispheres, has been accepted for a long time and the strongest Hadley cell has been used to study the climate change in recent years. However, two questions, why the upper level flow of Ferrel cell does not match observations and how many cells exist in the two polar regions, still exist. Using three different reanalysis datasets for the last 30 years, this paper showed that there might be an additional cell in each of two polar regions. The analyses of meridional-vertical section streamline (MSS), meridional-mass stream function (MSF), and climatic vertical velocity provide some evidences to support the existence of the new Arctic and Antarctic cells located in the troposphere. Thus, an eight-cell model in the global troposphere is proposed in this study. The maximum intensity of the Hadley cell in the boreal winter indicated by MSF in the Northern Hemisphere (NH) is stronger than that of the Ferrel cell for about 4.8 times, so the upper level northeasterly wind of Ferrel cell is too weak to be detected when compared with the stronger southwesterly wind of the Hadley cell. National Natural Science Foundation of China [41375073]; Strategic Priority Research Program of the Chinese Academy of Sciences [XDA05090407]; Key Technologies RD Program [201306032] SCI(E) ARTICLE qianwh@pku.edu.cn 1-2 1-12 125

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