High pressure, higher temperature

 

The weather was very settled for the harvest on Clarkson's Farm this year. That's the famous Lamborghini tractor on the right. A high pressure system had resulted in very high temperatures. The Times newspaper on Saturday 6 August says that "temperatures will rise as the air is compressed in the high pressure like a bicycle pump heating up as the air is squeezed". I'd never thought of that. We're into the gas laws here. However, there are three variables to consider. Not just pressure and temperature but volume as well. So the assumption here is that the volume of the air doesn't change as the pressure increases, at least not much. I suppose that the volume of the atmosphere is constant but are we considering the whole atmosphere or just a sample of the air inside it? Need to think about that.