Trevor J. McDougall

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Algorithms are presented for density, potential temperature, conservative temperature, and the freezing temperature of seawater. The algorithms for potential temperature and density (in terms of potential temperature) are updates to routines recently published by McDougall et al., while the algorithms involving conservative temperature and the freezing(More)
More than half of the predicted rise in future sea level caused by the enhanced greenhouse effect is currently thought to be due to the thermal expansion of the oceans. Here methods for quantifying this thermal expansion component of sea level rise in ocean general circulation models (GCMs) are developed. A simple linear model of ocean heat uptake allows(More)
In the absence of diapycnal mixing processes, fluid parcels move in directions along which they do not encounter buoyant forces. These directions define the local neutral tangent plane. Because of the nonlinear nature of the equation of state of seawater, these neutral tangent planes cannot be connected globally to form a welldefined surface in(More)
Canuto and Dubovikov [Canuto, V.M., Dubovikov, M.S., 2006. Dynamical model of mesoscales in z-coordinates. Ocean Modelling, 11, 123–166; Canuto, V.M., Dubovikov, M.S., 2007. The effect of mesoscales on the tracer equation in z-coordinates OGCMs. Ocean Modelling 16, 17–27] claim that present oceanographic models ignore a leading-order diapycnal term in the(More)
The abyssal ocean is broadly characterized by northward flow of the densest waters and southward flow of less-dense waters above them. Understanding what controls the strength and structure of these interhemispheric flows-referred to as the abyssal overturning circulation-is key to quantifying the ocean's ability to store carbon and heat on timescales(More)
Oceanography is concerned with understanding the mechanisms controlling the movement of seawater and its contents. A fundamental tool in this process is the characterization of the thermophysical properties of seawater as functions of measured temperature and electrical conductivity, the latter used as a proxy for the concentration of dissolved matter in(More)
William K. Dewar 1,*, Joseph Schoonover 1, Trevor McDougall 2 and Rupert Klein 3 1 Department of Earth, Ocean, and Atmospheric Science, Florida State University, Tallahassee, FL 32309, USA; schoonover.numerics@gmail.com 2 School of Mathematics and Statistics, UNSW, Sydney, NSW 2052, Australia; trevor.mcdougall@unsw.edu.au 3 Institut für Mathematik, Freie(More)
Water in its three ambient phases plays the central thermodynamic role in the terrestrial climate system. Clouds control Earth's radiation balance, atmospheric water vapour is the strongest "greenhouse" gas, and non-equilibrium relative humidity at the air-sea interface drives evaporation and latent heat export from the ocean. On climatic time scales,(More)