GSTDTAP  > 气候变化
DOI10.1029/2019GL086445
Nonlinear Damping of ITCZ Migrations Due to Ekman Ocean Energy Transport
Afargan-Gerstman, Hula1,2; Adam, Ori1
2020-03-16
发表期刊GEOPHYSICAL RESEARCH LETTERS
ISSN0094-8276
EISSN1944-8007
出版年2020
卷号47期号:5
文章类型Article
语种英语
国家Israel; Switzerland
英文摘要

The role of tropical wind-driven ocean circulation in setting the position of the Intertropical Convergence Zone (ITCZ) is studied using an atmospheric model coupled to a slab ocean with parameterized Ekman energy transport. Unlike previous studies, the parameterized cross-equatorial ocean energy transport, which is critical for the coupled response, is explicitly represented as the curl of the wind stress at the equator. A nonlinear sensitivity of the ITCZ position to hemispherically asymmetric heating and ocean stratification is seen, which is primarily linked to the partitioning of cross-equatorial energy transport between (i) the atmosphere and ocean and (ii) atmospheric mean and transient eddy components. Due to the nonmonotonic response of transient eddies to the asymmetric heating, amplified or damped response is possible. The common assumption of a linear relation between the ITCZ position and hemispherically asymmetric heating is therefore found to be inadequate when large climatic variations are considered.


领域气候变化
收录类别SCI-E
WOS记录号WOS:000529112700035
WOS关键词HEAT-TRANSPORT ; IDEALIZED SIMULATIONS ; HADLEY CIRCULATIONS ; PART I ; POSITION ; PRECIPITATION ; DYNAMICS ; EXTENT ; GCM
WOS类目Geosciences, Multidisciplinary
WOS研究方向Geology
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/279771
专题气候变化
作者单位1.Hebrew Univ Jerusalem, Fredy & Nadine Herrmann Inst Earth Sci, Jerusalem, Israel;
2.Swiss Fed Inst Technol, Inst Atmospher & Climate Sci, Zurich, Switzerland
推荐引用方式
GB/T 7714
Afargan-Gerstman, Hula,Adam, Ori. Nonlinear Damping of ITCZ Migrations Due to Ekman Ocean Energy Transport[J]. GEOPHYSICAL RESEARCH LETTERS,2020,47(5).
APA Afargan-Gerstman, Hula,&Adam, Ori.(2020).Nonlinear Damping of ITCZ Migrations Due to Ekman Ocean Energy Transport.GEOPHYSICAL RESEARCH LETTERS,47(5).
MLA Afargan-Gerstman, Hula,et al."Nonlinear Damping of ITCZ Migrations Due to Ekman Ocean Energy Transport".GEOPHYSICAL RESEARCH LETTERS 47.5(2020).
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