PHY-02 Atlantic Ocean Variability
The Meridional Coherence of Atlantic Meridional Heat Transport under Global Warming
Sheng Wu* , Peking University
Feili Li, Xiamen University
Yonggang Liu, Peking University

The Atlantic Meridional Overturning Circulation (AMOC) has an important effect on nature climate system, which is thought to contribute substantially to the Atlantic Meridional Heat Transport (AMHT). The AMOC variations are shown to be coherent across latitudes south of the deep water formation region over decadal and longer time scales. However, such a coherence has been questioned from recent modeling and observational studies. The coherence of the AMHT is even more uncertain given the possible contributions from processes other than the AMOC in redistributing heat across ocean basins. In this study, we use climate models to diagnose the AMHT’s spatial patterns to understand how and why they are similar to or different from that of the AMOC. In addition, we discuss how the AMHT coherence will likely be affected by global warming.