caa a22 4500 605472629 CHVBK 20210128100339.0 cr unu---uuuuu 210128e20151201xx s 000 0 eng 10.1007/s00382-015-2520-6 doi (NATIONALLICENCE)springer-10.1007/s00382-015-2520-6 The role of the PMOC in modulating the deglacial shift of the ITCZ [Elektronische Daten] [Wei Liu, Aixue Hu] 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. Springer-Verlag Berlin Heidelberg, 2015 PMOC nationallicence AMOC nationallicence ITCZ nationallicence Meridional heat transport nationallicence Last deglaciation nationallicence Bering Strait nationallicence Liu Wei Scripps Institution of Oceanography, CASPO, University of California, San Diego, 9500 Gilman Drive, 92093, La Jolla, CA, USA aut Hu Aixue Climate and Global Dynamics Division, National Center for Atmospheric Research, Boulder, CO, USA aut Climate Dynamics Springer Berlin Heidelberg 45/11-12(2015-12-01), 3019-3034 0930-7575 45:11-12<3019 2015 45 382 https://doi.org/10.1007/s00382-015-2520-6 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00382-015-2520-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Liu Wei Scripps Institution of Oceanography, CASPO, University of California, San Diego, 9500 Gilman Drive, 92093, La Jolla, CA, USA aut NATIONALLICENCE 700 1- Hu Aixue Climate and Global Dynamics Division, National Center for Atmospheric Research, Boulder, CO, USA aut NATIONALLICENCE 773 0- Climate Dynamics Springer Berlin Heidelberg 45/11-12(2015-12-01), 3019-3034 0930-7575 45:11-12<3019 2015 45 382