Heaving modes in the world oceans
Huang, Rui Xin
MetadataShow full item record
KeywordAdiabatic motions; Heaving; Subtropical and subpolar gyres; Southern oceans; Baroclinic modes of heating content anomaly; Wind-driven circulation; Climate variability of heat content
Part of climate changes on decadal time scales can be interpreted as the result of adiabatic motions associated with the adjustment of wind-driven circulation, i.e., the heaving of the isopycnal surfaces. Heat content changes in the ocean, including hiatus of global surface temperature and other phenomena, can be interpreted in terms of heaving associated with adjustment of wind-driven circulation induced by decadal variability of wind. A simple reduced gravity model is used to examine the consequence of adiabatic adjustment of the wind-driven circulation. Decadal changes in wind stress forcing can induce three-dimensional redistribution of warm water in the upper ocean. In particular, wind stress change can generate baroclinic modes of heat content anomaly in the vertical direction; in fact, changes in stratification observed in the ocean may be induced by wind stress change at local or in the remote parts of the world oceans. Intensification of the equatorial easterly can induce cooling in the upper layer and warming in the subsurface layer. The combination of this kind of heat content anomaly with the general trend of warming of the whole water column under the increasing greenhouse effect may offer an explanation for the hiatus of global surface temperature and the accelerating subsurface warming over the past 10–15 years. Furthermore, the meridional transport of warm water in the upper ocean can lead to sizeable transient meridional overturning circulation, poleward heat flux and vertical heat flux. Thus, heaving plays a key role in the oceanic circulation and climate.
© The Author(s), 2015. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Climate Dynamics 45 (2015): 3563-3591, doi:10.1007/s00382-015-2557-6.
The following license files are associated with this item:
Showing items related by title, author, creator and subject.
Perspectives on Proterozoic surface ocean redox from iodine contents in ancient and recent carbonate Hardisty, Dalton S.; Lu, Zunli; Bekker, Andrey; Diamond, Charles W.; Gill, Benjamin C.; Jiang, Ganqing; Kah, Linda; Knoll, Andrew H.; Loyd, Sean; Osburn, Magdalena; Planavsky, Noah J. (2017-01)The Proterozoic Eon hosted the emergence and initial recorded diversification of eukaryotes. Oxygen levels in the shallow marine settings critical to these events were lower than today’s, although how much lower is ...
Widespread influence of resuspended sediments on oceanic particulate organic carbon : insights from radiocarbon and aluminum contents in sinking particles Hwang, Jeomshik; Druffel, Ellen R. M.; Eglinton, Timothy I. (American Geophysical Union, 2010-11-20)Particulate organic carbon (POC) in the ocean often exhibits more depleted radiocarbon contents (lower Δ 14C values) than expected if its sole source were POC recently synthesized by primary production and export from the ...
Rabe, Benjamin; Karcher, Michael; Schauer, Ursula; Toole, John M.; Krishfield, Richard A.; Pisarev, Sergey; Kauker, Frank; Gerdes, Rudiger; Kikuchi, Takashi (2010-12-10)Unprecedented summer-season sampling of the Arctic Ocean during the period 2006−2008 makes possible a quasi-synoptic estimate of liquid freshwater (LFW) inventories in the Arctic Ocean basins. In comparison to observations ...