"When people ask me 'have you got a good example of climate change?' - I say 'talk to a viticulturist'."

Those are the words of Christopher Davies, a senior research scientist at the CSIRO.

He explains grapes are extremely sensitive to heat, which means the effects of a warming planet are felt sharply in the wine industry and have been for a number of years.

"It's an extremely concerning problem for viticulture in Australia," fifth-generation winemaker Alisdair Tulloch tells SBS News during a visit to his family-run vineyard this week.