The powerfully built 24-year-old emerged from a deluge in near freezing temperatures at the Yorkshire worlds in late September to outlast his rivals and win the men's road race at Harrogate.
Riding for the American Trek team Pedersen will spend most of 2020 wearing the distinctive world champion's rainbow jersey, albeit in the service of team captain Richie Porte.
The Tour Down Under is likely to be raced in temperatures of over 40 degrees Celsius (104 degrees Fahrenheit) between January 21-26 with Porte one of the favourites.