Simulated two-stage recovery of Atlantic meridional overturning circulation during the last deglaciation

Jun Cheng; Zhengyu Liu; Feng He; Bette L. Otto-Bliesner; Esther C. Brady; Mark Wehrenberg

doi:10.1029/2010GM001014

Simulated two-stage recovery of Atlantic meridional overturning circulation during the last deglaciation

Jun Cheng
, Zhengyu Liu
, Feng He
, Bette L. Otto-Bliesner
, Esther C. Brady
, Mark Wehrenberg

Paleo and Polar Climate

Nanjing University of Information Science & Technology
University of Wisconsin-Madison
Peking University
National Center for Atmospheric Research

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

9 Scopus citations

Abstract

A two-stage recovery of Atlantic meridional overturning circulation (AMOC) during Bølling Allerød (BA) is revealed in the first transient simulation of last deglaciation in a fully coupled general circulation model (Transient Simulation of Climate Evolution over the Last 21,000 Years (TraCE-21000)). After being suppressed during the Heinrich 1 event, North Atlantic Deep Water (NADW) formation first reinitiates in the Labrador Sea in stage 1 and then reinitiates in the Greenland-Iceland-Norwegian (GIN) seas in stage 2. This feature is derived from the investigation of NADW formation in its two origins with a newly developed method and is confirmed by the comprehensive analysis of relative variables. A new mechanism is proposed to interpret the northward asynchronous reinitiation of NADW during BA. In addition, our work also points out that the generation of the AMOC overshoot is associated with the reinitiation of NADW in GIN seas.

Original language	English
Title of host publication	Abrupt Climate Change
Subtitle of host publication	Mechanisms, Patterns, and Impacts
Publisher	American Geophysical Union
Pages	75-92
Number of pages	18
Edition	1
DOIs	https://doi.org/10.1029/2010GM001014
State	Published - 2011

Publication series

Name	Geophysical Monograph Series
Number	1
Volume	193

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10.1029/2010GM001014

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Cheng, J., Liu, Z., He, F., Otto-Bliesner, B. L., Brady, E. C., & Wehrenberg, M. (2011). Simulated two-stage recovery of Atlantic meridional overturning circulation during the last deglaciation. In Abrupt Climate Change: Mechanisms, Patterns, and Impacts (1 ed., pp. 75-92). (Geophysical Monograph Series; Vol. 193, No. 1). American Geophysical Union. https://doi.org/10.1029/2010GM001014

@inproceedings{a3f3aa2ed447490e9d0bc0bdfa85c8e0,

title = "Simulated two-stage recovery of Atlantic meridional overturning circulation during the last deglaciation",

abstract = "A two-stage recovery of Atlantic meridional overturning circulation (AMOC) during B{\o}lling Aller{\o}d (BA) is revealed in the first transient simulation of last deglaciation in a fully coupled general circulation model (Transient Simulation of Climate Evolution over the Last 21,000 Years (TraCE-21000)). After being suppressed during the Heinrich 1 event, North Atlantic Deep Water (NADW) formation first reinitiates in the Labrador Sea in stage 1 and then reinitiates in the Greenland-Iceland-Norwegian (GIN) seas in stage 2. This feature is derived from the investigation of NADW formation in its two origins with a newly developed method and is confirmed by the comprehensive analysis of relative variables. A new mechanism is proposed to interpret the northward asynchronous reinitiation of NADW during BA. In addition, our work also points out that the generation of the AMOC overshoot is associated with the reinitiation of NADW in GIN seas.",

author = "Jun Cheng and Zhengyu Liu and Feng He and Otto-Bliesner, \{Bette L.\} and Brady, \{Esther C.\} and Mark Wehrenberg",

note = "Publisher Copyright: {\textcopyright} 2011 by the American Geophysical Union.",

year = "2011",

doi = "10.1029/2010GM001014",

language = "English",

series = "Geophysical Monograph Series",

publisher = "American Geophysical Union",

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pages = "75--92",

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Cheng, J, Liu, Z, He, F, Otto-Bliesner, BL, Brady, EC & Wehrenberg, M 2011, Simulated two-stage recovery of Atlantic meridional overturning circulation during the last deglaciation. in Abrupt Climate Change: Mechanisms, Patterns, and Impacts. 1 edn, Geophysical Monograph Series, no. 1, vol. 193, American Geophysical Union, pp. 75-92. https://doi.org/10.1029/2010GM001014

Simulated two-stage recovery of Atlantic meridional overturning circulation during the last deglaciation. / Cheng, Jun; Liu, Zhengyu; He, Feng et al.
Abrupt Climate Change: Mechanisms, Patterns, and Impacts. 1. ed. American Geophysical Union, 2011. p. 75-92 (Geophysical Monograph Series; Vol. 193, No. 1).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Simulated two-stage recovery of Atlantic meridional overturning circulation during the last deglaciation

AU - Cheng, Jun

AU - Liu, Zhengyu

AU - He, Feng

AU - Otto-Bliesner, Bette L.

AU - Brady, Esther C.

AU - Wehrenberg, Mark

PY - 2011

Y1 - 2011

N2 - A two-stage recovery of Atlantic meridional overturning circulation (AMOC) during Bølling Allerød (BA) is revealed in the first transient simulation of last deglaciation in a fully coupled general circulation model (Transient Simulation of Climate Evolution over the Last 21,000 Years (TraCE-21000)). After being suppressed during the Heinrich 1 event, North Atlantic Deep Water (NADW) formation first reinitiates in the Labrador Sea in stage 1 and then reinitiates in the Greenland-Iceland-Norwegian (GIN) seas in stage 2. This feature is derived from the investigation of NADW formation in its two origins with a newly developed method and is confirmed by the comprehensive analysis of relative variables. A new mechanism is proposed to interpret the northward asynchronous reinitiation of NADW during BA. In addition, our work also points out that the generation of the AMOC overshoot is associated with the reinitiation of NADW in GIN seas.

AB - A two-stage recovery of Atlantic meridional overturning circulation (AMOC) during Bølling Allerød (BA) is revealed in the first transient simulation of last deglaciation in a fully coupled general circulation model (Transient Simulation of Climate Evolution over the Last 21,000 Years (TraCE-21000)). After being suppressed during the Heinrich 1 event, North Atlantic Deep Water (NADW) formation first reinitiates in the Labrador Sea in stage 1 and then reinitiates in the Greenland-Iceland-Norwegian (GIN) seas in stage 2. This feature is derived from the investigation of NADW formation in its two origins with a newly developed method and is confirmed by the comprehensive analysis of relative variables. A new mechanism is proposed to interpret the northward asynchronous reinitiation of NADW during BA. In addition, our work also points out that the generation of the AMOC overshoot is associated with the reinitiation of NADW in GIN seas.

UR - https://www.scopus.com/pages/publications/84886916491

U2 - 10.1029/2010GM001014

DO - 10.1029/2010GM001014

M3 - Conference contribution

AN - SCOPUS:84886916491

T3 - Geophysical Monograph Series

SP - 75

EP - 92

BT - Abrupt Climate Change

PB - American Geophysical Union

ER -

Simulated two-stage recovery of Atlantic meridional overturning circulation during the last deglaciation

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