Regional sea level changes in the marginal seas of southeast Asia: Mechanisms and projections of possible 21st-century trends (IndoArchipel-2)

We analyse the importance of local heat and freshwater fluxes for sea-level variability in the tropical Pacific on interannual to decadal timescales by using a global ocean model. Our results suggest that they amplify sea-level variability in the eastern part of the basin and dampen it in the central and western part of the domain. We demonstrate that the oceanic response allows local sea-level anomalies to propagate zonally which enables remote effects of local heat and freshwater fluxes.

publication: Wagner, P., M. Scheinert, and C. Böning (2021), Contribution of buoyancy fluxes to tropical Pacific sea level variability, Ocean Sci., 17, 1103–1113, doi: 10.5194/os-17-1103-2021.

Figure 1: Change of standard deviation of sea level when interannual variability of ocean-atmosphere buoyancy fluxes are supressed.