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Climate 2019, 7(2), 31;

A Proposed Exogenous Cause of the Global Temperature Hiatus

540 First Avenue West, Qualicum Beach, BC V9K 1J8, Canada
Received: 10 January 2019 / Accepted: 30 January 2019 / Published: 3 February 2019
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Since 1850, the rise in global mean surface temperatures (GMSTs) from increasing atmospheric concentrations of greenhouse gases (GHGs) has exhibited three ~30-year hiatus (surface cooling) episodes. The current hiatus is often thought to be generated by similar cooling episodes in Pacific or Atlantic ocean basins. However, GMSTs as well as reconstructed Atlantic and Pacific ocean basin surface temperatures show the presence of similar multidecadal components generated from a three-dimensional analysis of differential gravitational (tidal) forcing from the sun and moon. This paper hypothesizes that these episodes are all caused by external tidal forcing that generates alternating ~30-year zonal and meridional circulation regimes, which respectively increase and decrease GMSTs through tidal effects on sequestration (deep ocean heat storage) and energy redistribution. Hiatus episodes consequently coincide with meridional regimes. The current meridional regime affecting GMSTs is predicted to continue to the mid-2030s but have limited tendency to decrease GMSTs from sequestration because of continuing increases in radiative forcing from increasing atmospheric GHGs. The tidal formulation also generates bidecadal oscillations, which may generate shorter ~12-year hiatus periods in global and ocean basin temperatures. The formulation appears to assimilate findings from disciplines as disparate as geophysics and biology. View Full-Text
Keywords: tidal forcing; hiatus; atmospheric circulation; zonal and meridional regimes; global mean surface temperatures; ocean basins tidal forcing; hiatus; atmospheric circulation; zonal and meridional regimes; global mean surface temperatures; ocean basins

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Treloar, N.C. A Proposed Exogenous Cause of the Global Temperature Hiatus. Climate 2019, 7, 31.

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