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\begin{document}

\title{Influence of Meridional Overturning Circulation on Ocean Heat Storage
Rate in an Idealised Climate Model}



\author[1]{Peter Shatwell}%
\author[1]{Arnaud Czaja}%
\author[2]{David Ferreira}%
\affil[1]{Imperial College London}%
\affil[2]{University of Reading}%


\vspace{-1em}



  
  \date{May 22, 2024}


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\begin{abstract}
To study the role of the Atlantic meridional overturning circulation
(AMOC) in climate change, we perform an abrupt CO2--doubling experiment
using a coupled atmosphere-ocean- ice model with a simple geometry that
separates the ocean into small and large basins. As in observations and
high-end climate models, the small basin exhibits a MOC and warms at a
faster rate than the large basin. In our set-up, this contrast in heat
storage rates is 0.6 \selectlanguage{ngerman}± 0.1 W/m\^{}2, and we argue that this is due to
the small basin MOC. However, the MOC weakens significantly, yet this
has little impact on the small basin's heat storage rate. We find this
is due to the effects of both compensating warming patterns and
interbasin heat transports. Thus, although the presence of a MOC is
important for enhanced heat storage, MOC weakening is surprisingly
unimportant.%
\end{abstract}\selectlanguage{ngerman}%



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