# Thermal expansion coefficient of water

I am working through the methods section of the following paper: Spatial-temporal variability in surface layer deepening and lateral advection in an embayment of Lake Victoria, East Africa

In the methodology section they refers to the thermal expansion coefficient of water as

$$a = 1.6 \times10^{-5} \times 9.6 \times10^{-6} \times T$$

where $T$ is the water temperature in $^\circ C$. This is valid for temperature in the range of $20-30$^\circ C\$. Can anyone point me to a cite-able paper that calculates the thermal expansion coefficient as a function of temperature i.e. somewhere I can find the variable for a range of temperatures not just in the range specified.

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 – John Rennie Mar 12 at 14:34