末次冰消期以来南大洋深部流通性与大气pCO_2的关系及其控制机制
The Mechanisms of Variation Between Southern Ocean Ventilation and Atmospheric Carbon Dioxide Since the Last Deglaciation
查看参考文献80篇
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文摘
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末次冰消期时,南大洋深层水流通性增强和大气CO_2分压(大气pCO_2)升高存在密切联系。该时期南大洋深部流通性增强的同时会伴随着大气与大洋环流模式的一系列变化,例如南半球西风带(Southern Hemisphere Westerly Winds Belt,SWW)位置和强度以及大西洋经向翻转流(Atlantic Meridional Overturning Circulation, AMOC)强度的变化。一些关于控制南大洋流通性变化机制方面的研究发现,SWW的经向摆动可对南大洋深部流通性产生强烈影响。末次冰消期时SWW南移,会强化南大洋风驱上升流,增强南大洋的通风。另一些研究认为AMOC变化对南大洋深部流通性具有更为强烈的影响,末次冰消期时北大西洋深层水(North Atlantic Deep Water,NADW)生成减弱导致AMOC强度减弱,这一过程使得NADW与绕极深层水(Circumpolar Deep Water, CDW)的混合边界北移,从而减弱南大洋水体成层化,增强了南大洋深层水上涌。上述2种模式均可能引起南大洋深部流通状况的改变,并最终导致冰消期大气pCO_2上升。除SWW与AMOC驱动南大洋深部流通状况的改变之外,最新研究发现南大洋罗斯海似乎可以通过其自身底层水的北向扩张与极向退却进一步影响南大洋深部流通状况。总的来说,控制南大洋深部流通状况的并非单一机制,SWW与AMOC以及罗斯海底层水等诸多因素在控制南大洋流通状况变化的同时也会以不同的方式在一定程度上积极的响应大气pCO_2的变化。 |
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其他语种文摘
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The Southern Hemisphere Westerly Winds Belt(SWW)affects the exchange of carbon dioxide between the southern ocean and atmosphere by changing the ventilation of the southern ocean during last Deglaciation.During this period,the ventilation of deep southern ocean usually accompanied with the variation of atmosphere and ocean circulation.As an example,changes in the location and intensity of SWW and the Atlantic Meridional Overturning Circulation (AMOC)changes in intensity.Some studies suggested that the belt of the SWW may move southward towards the polar at the beginning of deglaciation, and this shift of SWW could exert a strong control on Southern Ocean upwelling.While other studies suggested that compared to other factors,the changes in AMOC have a more important control on Southern Ocean stratification,and this could exert a stronger control on Southern Ocean upwelling.This could be explained by the mechanism that decreased formation of North Atlantic Deep Water(NADW)could lead to a weaker AMOC strength,which results in a northward mixed boundary of Antarctic Bottom Water(AABW)and NADW.Therefore,a weaker stratification and increasing upwelling of deep Southern Ocean existed during the Last Deglaciation.Both of these mechanisms could lead to the variations of ventilation or stratification in the Southern Ocean,which strongly coincided with the variation of atmospheric carbon dioxide concentration.Thus,discussions of the mechanisms which carbon dioxide was released by upwelling from the deep southern ocean during the most recent transition from glacial to interglacial conditions, have concentrated on the mechanisms about the variation of the Southern ocean ventilation.This passage following deciphers about two scenarios'mechanisms of the most important driving force of the Southern ocean ventilation in the following graphs.In addition to these two driven forces,some new studies have found that the northward expansion and poleward retreat of Ross Sea Bottom Water could exert a strong control on the Southern Ocean stratification.However,there are many mechanisms for deep Southern Ocean circulation.For example,variations of SWW strength and position,changes of AMOC strength and expansion/retreat of Ross Sea Bottom Water,are other mechanisms of the variation of Southern Ocean circulation.These mechanisms change the Southern Ocean circulation in different ways.Meanwhile,these processes could respond positively to the variations of the atmospheric pCO_2 in certain extent. |
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来源
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海洋科学进展
,2018,36(2):159-170 【核心库】
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DOI
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10.3969/j.issn.1671-6647.2018.02.001
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关键词
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南大洋
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末次冰消期
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深部流通性
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碳循环
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控制机制
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地址
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1.
国家海洋局第一海洋研究所, 山东, 青岛, 266061
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青岛海洋科学与技术国家实验室海洋地质过程与环境功能实验室, 青岛海洋科学与技术国家实验室海洋地质过程与环境功能实验室, 山东, 青岛, 266061
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中国科学院海洋研究所, 山东, 青岛, 266071
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中国科学院大学, 北京, 100049
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语种
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中文 |
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文献类型
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综述型 |
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ISSN
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1671-6647 |
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学科
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海洋学 |
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基金
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青岛海洋科学与技术国家实验室鳌山科技创新计划项目
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文献收藏号
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CSCD:6383593
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参考文献 共
80
共4页
|
|
1.
Khatiwala S. Reconstruction of the history of anthropogenic CO_2concentrations in the ocean.
Nature,2009,462(7271):346-349
|
被引
22
次
|
|
|
|
|
2.
Marshall J. Closure of the meridional overturning circulation through Southern Ocean upwelling.
Nature Geoscience,2012,5(3):171-180
|
被引
26
次
|
|
|
|
|
3.
Parker M L. Invertebrate micronekton and macrozooplankton in the Marguerite Bay region of the Western Antarctic Peninsula.
Deep-Sea Research Part II-Topical Studies in Oceanography,2011,58(13/16):1580-1598
|
被引
2
次
|
|
|
|
|
4.
Whitworth T. Antarctic Bottom Water production and export by tides in the Ross Sea.
Geophysical Research Letters,2006,33(12):285-293
|
被引
8
次
|
|
|
|
|
5.
Petit J R. Climate and atmospheric history of the past 420 000years from the Vostok ice core,Antarctica.
Nature,1999,399(6735):429-436
|
被引
289
次
|
|
|
|
|
6.
Sigman D M. The polar ocean and glacial cycles in atmospheric CO_2concentration.
Nature,2010,466(7302):47-55
|
被引
25
次
|
|
|
|
|
7.
Knox F. Changes in atmospheric CO_2:Influence of the marine biota at high latitude.
Journal of Geophysical Research,1984,89:4629-4637
|
被引
2
次
|
|
|
|
|
8.
Charles C D. Biogenic opal in Southern Ocean sediments over the last 450,000years:Implications for surface water chemistry and circulation.
Paleoceanography,1991,6(6):697-728
|
被引
11
次
|
|
|
|
|
9.
Sarmiento J L. A new model for the role of the oceans in determining atmospheric pCO_2.
Nature,1984,308(5960):621-624
|
被引
8
次
|
|
|
|
|
10.
Post W M. The global carbon cycle.
American Scientist,1990,78:310-326
|
被引
127
次
|
|
|
|
|
11.
Sigman D M. Glacial/interglacial variations in atmospheric carbon dioxide.
Nature,2000,407(6806):859-869
|
被引
61
次
|
|
|
|
|
12.
Francois R. Contribution of Southern Ocean surface-water stratification to low atmospheric CO_2 concentrations during the last glacial period.
Nature,1997,389(6654):929-935
|
被引
8
次
|
|
|
|
|
13.
Marinov I. The Southern Ocean biogeochemical divide.
Nature,2006,441(7096):964-967
|
被引
8
次
|
|
|
|
|
14.
Anderson R F. Wind-driven upwelling in the Southern Ocean and the deglacial rise in atmospheric CO_2.
Science,2009,323(5920):1443-1448
|
被引
42
次
|
|
|
|
|
15.
Skinner L C. Ventilation of the deep Southern Ocean and deglacial CO_2rise.
Science,2010,328(5982):1147-1151
|
被引
10
次
|
|
|
|
|
16.
Hodgson D A. Palaeoclimate:Southern westerlies and CO_2.
Nature Geoscience,2010,3(10):666-667
|
被引
2
次
|
|
|
|
|
17.
Anderson R F. Paleoclimate.Uncorking the Southern Ocean's vintage CO_2.
Science,2010,328(5982):1117-1118
|
被引
4
次
|
|
|
|
|
18.
Fischer H. The role of Southern Ocean processes in orbital and millennial CO_2variations-A synthesis.
Quaternary Science Reviews,2010,29(1/2):193-205
|
被引
7
次
|
|
|
|
|
19.
Jaccard S L. Covariation of deep Southern Ocean oxygenation and atmospheric CO_2through the last ice age.
Nature,2016,530(7589):207-210
|
被引
9
次
|
|
|
|
|
20.
Martinez-Boti M A. Boron isotope evidence for oceanic carbon dioxide leakage during the last deglaciation.
Nature,2015,518(7538):219-222
|
被引
2
次
|
|
|
|
|
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