1. The problem statement, all variables and given/known data Given the compressibility of water, how do I find the temp change of a water parcel brought to the surface adiabatically? I know that it is equivalent to work done by the parcel, but am stuck as how to move forward. Given a depth, is there an equation to work out the temp change? 2. Relevant equations compressibility=-1/V(dV/dp) and volumetric thermal expansion coefficient=1/V(dV/dT) 3. The attempt at a solution I tried to use the first equation to get vol change and then vol change for temp change, but my answers are far too high. I assumed a unit volume. For a depth of 5000m the difference should be around half a degree. I used a conversion of around 1 bar to 10m.