兰州大学机构库 >大气科学学院
Novel three-pattern decomposition of global atmospheric circulation: generalization of traditional two-dimensional decomposition
Hu, SJ; Cheng, JB; Chou, JF; Hu, SJ (reprint author), Lanzhou Univ, Coll Atmospher Sci, Key Lab Semiarid Climate Change, Minist Educ, Lanzhou 730000, Gansu, Peoples R China.
Indexed BySCIE
2017-12
Source PublicationCLIMATE DYNAMICS
ISSN0930-7575
Volume49Pages:3573-3586
AbstractThis study investigates the differences and connections between the three-pattern decomposition of global atmospheric circulation, the representation of the horizontal vortex circulation in the middle-high latitudes and the local partitioning of the overturning circulation in the tropics. It concludes that the latter two methods are based on the traditional two-dimensional (2D) decomposition of the vortex and divergent circulations in the fluid dynamics and that the three-pattern decomposition model is not a simple superposition of the two traditional methods but a new three-dimensional (3D) decomposition of global atmospheric circulation. The three-pattern decomposition model can decompose the vertical vorticity of atmosphere into three parts: one part is caused by the horizontal circulation, whereas the other two parts are induced by divergent motions, which correspond to the zonal and meridional circulations. The diagnostic results from the decomposed vertical vorticities accord well with the classic theory: the atmospheric motion at 500 hPa is quasi-horizontal and nondivergent and can represent the vertical mean state of the entire atmosphere. The analysis of the climate characteristics shows that the vertical vorticities of the zonal and meridional circulations are the main cause of the differences between the three-pattern circulations and traditional circulations. The decomposition of the vertical vorticity by the three-pattern decomposition model offers new opportunities to quantitatively study the interaction mechanisms of the Rossby, Hadley and Walker circulations using the vorticity equation.
KeywordVortex circulation in the middle-high latitudes Overturning circulation in the tropics Traditional two-dimensional decomposition Three-pattern decomposition of global atmospheric circulation Decomposition of vertical vorticity
Subject AreaMeteorology & Atmospheric Sciences
PublisherSPRINGER
Publication PlaceNEW YORK
DOI10.1007/s00382-017-3530-3
First Inst
Language英语
Project NumberNational Natural Science Foundation of China [41475068, 41530531, 41630421] ; Special Scientific Research Project for Public Interest [GYHY201206009] ; Fundamental Research Funds for the Central Universities of China [lzujbky-2014-203] ; Foundation of Key Laboratory for Semi-Arid Climate Change of the Ministry of Education in Lanzhou University
Funding Project国家自然科学基金项目 ; 公益性行业科研专项 ; 中央高校基本科研业务费专项资金
Funding OrganizationNSFC ; MOST ; LZU
SubtypeArticle
WOS IDWOS:000414153800036
Department[Hu, Shujuan;
Cheng, Jianbo;
Chou, Jifan] Lanzhou Univ, Coll Atmospher Sci, Key Lab Semiarid Climate Change, Minist Educ, Lanzhou 730000, Gansu, Peoples R China
Citation statistics
Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.lzu.edu.cn/handle/262010/195715
Collection大气科学学院
Corresponding AuthorHu, SJ (reprint author), Lanzhou Univ, Coll Atmospher Sci, Key Lab Semiarid Climate Change, Minist Educ, Lanzhou 730000, Gansu, Peoples R China.
Recommended Citation
GB/T 7714
Hu, SJ,Cheng, JB,Chou, JF,et al. Novel three-pattern decomposition of global atmospheric circulation: generalization of traditional two-dimensional decomposition[J]. CLIMATE DYNAMICS,2017,49:3573-3586.
APA Hu, SJ,Cheng, JB,Chou, JF,&Hu, SJ .(2017).Novel three-pattern decomposition of global atmospheric circulation: generalization of traditional two-dimensional decomposition.CLIMATE DYNAMICS,49,3573-3586.
MLA Hu, SJ,et al."Novel three-pattern decomposition of global atmospheric circulation: generalization of traditional two-dimensional decomposition".CLIMATE DYNAMICS 49(2017):3573-3586.
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