Late 20th century Indian Ocean heat content gain masked by wind forcing Ummenhofer, Caroline C. Ryan, Svenja England, Matthew H. Scheinert, Markus Wagner, Patrick Biastoch, Arne Böning, Claus W. 2021-03-10T21:36:52Z 2021-04-26T06:16:47Z 2020-10-26
dc.description Author Posting. © American Geophysical Union, 2020. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geophysical Research Letters 47(22), (2020): e2020GL088692, doi:10.1029/2020GL088692. en_US
dc.description.abstract Rapid increases in upper 700‐m Indian Ocean heat content (IOHC) since the 2000s have focused attention on its role during the recent global surface warming hiatus. Here, we use ocean model simulations to assess distinct multidecadal IOHC variations since the 1960s and explore the relative contributions from wind stress and buoyancy forcing regionally and with depth. Multidecadal wind forcing counteracted IOHC increases due to buoyancy forcing from the 1960s to the 1990s. Wind and buoyancy forcing contribute positively since the mid‐2000s, accounting for the drastic IOHC change. Distinct timing and structure of upper ocean temperature changes in the eastern and western Indian Ocean are linked to the pathway how multidecadal wind forcing associated with the Interdecadal Pacific Oscillation is transmitted and affects IOHC through local and remote winds. Progressive shoaling of the equatorial thermocline—of importance for low‐frequency variations in Indian Ocean Dipole occurrence—appears to be dominated by multidecadal variations in wind forcing. en_US
dc.description.embargo 2021-04-26 en_US
dc.description.sponsorship This work was supported by the Alexander von Humboldt Foundation (CCU and SR), The Investment in Science Fund given primarily by WHOI Trustee and Corporation Members (CCU), James E. and Barbara V. Moltz Fellowship for climate‐related research (CCU), the ARC Centre of Excellence for Climate Extremes (CE170100023; CCU and MHE), ARC DP150101331 (CCU and MHE), and PW was supported through grant IndoArchipel from the Deutsche Forschungsgemeinschaft (DFG) as part of the Special Priority Program (SPP)‐1889”Regional Sea Level Change and Society” (SeaLevel). en_US
dc.identifier.citation Ummenhofer, C. C., Ryan, S., England, M. H., Scheinert, M., Wagner, P., Biastoch, A., & Boening, C. W. (2020). Late 20th century Indian Ocean heat content gain masked by wind forcing. Geophysical Research Letters, 47(22), e2020GL088692. en_US
dc.identifier.doi 10.1029/2020GL088692
dc.publisher American Geophysical Union en_US
dc.subject Decadal variability en_US
dc.subject Hiatus en_US
dc.subject Indian Ocean en_US
dc.subject Ocean heat content en_US
dc.subject Ocean models en_US
dc.subject Pacific Ocean en_US
dc.title Late 20th century Indian Ocean heat content gain masked by wind forcing en_US
dc.type Article en_US
dspace.entity.type Publication
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