The role of the PMOC in modulating the deglacial shift of the ITCZ

Verfasser / Beitragende:
[Wei Liu, Aixue Hu]
Ort, Verlag, Jahr:
2015
Enthalten in:
Climate Dynamics, 45/11-12(2015-12-01), 3019-3034
Format:
Artikel (online)
ID: 605472629
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024 7 0 |a 10.1007/s00382-015-2520-6  |2 doi 
035 |a (NATIONALLICENCE)springer-10.1007/s00382-015-2520-6 
245 0 4 |a The role of the PMOC in modulating the deglacial shift of the ITCZ  |h [Elektronische Daten]  |c [Wei Liu, Aixue Hu] 
520 3 |a Based on an energy-constraint framework, the effect of the Pacific meridional overturning circulation (PMOC) has been investigated on the meridional shift of the intertropical convergence zone (ITCZ). During Heinrich Event 1, the global ITCZ displaces southward in response to a shutdown of the Atlantic meridional overturning circulation (AMOC). However, the PMOC resumes and induces an enhanced northward meridional heat transport (MHT). Further analyses show that the resumption of the PMOC and its associated MHT can relieve the decrease of oceanic cross-equatorial heat transport by the collapsed AMOC and lower the compensating decline of atmospheric cross-equatorial meridional heat transport by 0.09PW, leading to an offset of the southward shift of the global ITCZ by 0.5°. Regionally the developed PMOC does not affect the southward movement of the Atlantic ITCZ much since the latter is dominated by the collapsed AMOC that induces the change of Atlantic MHT. In contrast, the PMOC-induced northward heat transport largely abates the hemispheric temperature contrast in the tropical Pacific and reduces the southward ITCZ shift by as much as 5° in the eastern Pacific. 
540 |a Springer-Verlag Berlin Heidelberg, 2015 
690 7 |a PMOC  |2 nationallicence 
690 7 |a AMOC  |2 nationallicence 
690 7 |a ITCZ  |2 nationallicence 
690 7 |a Meridional heat transport  |2 nationallicence 
690 7 |a Last deglaciation  |2 nationallicence 
690 7 |a Bering Strait  |2 nationallicence 
700 1 |a Liu  |D Wei  |u Scripps Institution of Oceanography, CASPO, University of California, San Diego, 9500 Gilman Drive, 92093, La Jolla, CA, USA  |4 aut 
700 1 |a Hu  |D Aixue  |u Climate and Global Dynamics Division, National Center for Atmospheric Research, Boulder, CO, USA  |4 aut 
773 0 |t Climate Dynamics  |d Springer Berlin Heidelberg  |g 45/11-12(2015-12-01), 3019-3034  |x 0930-7575  |q 45:11-12<3019  |1 2015  |2 45  |o 382 
856 4 0 |u https://doi.org/10.1007/s00382-015-2520-6  |q text/html  |z Onlinezugriff via DOI 
898 |a BK010053  |b XK010053  |c XK010000 
900 7 |a Metadata rights reserved  |b Springer special CC-BY-NC licence  |2 nationallicence 
908 |D 1  |a research-article  |2 jats 
949 |B NATIONALLICENCE  |F NATIONALLICENCE  |b NL-springer 
950 |B NATIONALLICENCE  |P 856  |E 40  |u https://doi.org/10.1007/s00382-015-2520-6  |q text/html  |z Onlinezugriff via DOI 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Liu  |D Wei  |u Scripps Institution of Oceanography, CASPO, University of California, San Diego, 9500 Gilman Drive, 92093, La Jolla, CA, USA  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Hu  |D Aixue  |u Climate and Global Dynamics Division, National Center for Atmospheric Research, Boulder, CO, USA  |4 aut 
950 |B NATIONALLICENCE  |P 773  |E 0-  |t Climate Dynamics  |d Springer Berlin Heidelberg  |g 45/11-12(2015-12-01), 3019-3034  |x 0930-7575  |q 45:11-12<3019  |1 2015  |2 45  |o 382