CP Conservative leader Andrew Scheer speaks to supporters at a pre-election event at the Shaw Centre in Ottawa on Oct. 21, 2018.

The Conservative leader also dismissed the work of Yale professor William Nordhaus, whose research shows a carbon tax to be an effective means of lowering emissions.

"Don't tell Canadians that you've got an environmental plan and that's it's really just in fact a new taxation tool," Scheer said.

Scheer took shots at the Liberal government's plan to impose a carbon price on recalcitrant provinces during an interview with CBC Radio's Michael Enright on Sunday, framing the environmental policy proposal as a tax issue.

OTTAWA — Conservative Leader Andrew Scheer has dropped some breadcrumbs for what his eventual climate plan will look like, saying he believes Canada can reduce global emissions rather than domestic — and without a carbon tax.

"There's no correlation between reductions of emissions and what the Liberals are proposing," Scheer said.

Nordhaus was awarded the Nobel Prize for economics this month for his work on carbon pricing.

Scheer and his MPs have maintained a price on carbon would stifle Canadian industries and make businesses less competitive with international-based competitors operating in jurisdictions without an equivalent tax.

"Are we better off if we displace jobs and investments to other countries and global emissions go up? I say no," Scheer said. "Let's bring that production here and have less emissions globally because we can make things more efficiently and cleaner."

Scheer did not commit to support the Paris Agreement, the international climate pledge signed by 194 countries in 2016 to limit global warming, even though Tories voted in 2017 to implement the accord. The Conservative plan is still being finalized and "all will become clear" in the future, he said.

'I don't know what that means'

Shy of explicit details, the Conservative leader has previously stated in vague terms that the party's alternative to the government's climate plan would be more internationally minded.

"It will speak to Canada's targets," Scheer said of his draft climate plan. The answer prompted host Enright to quip, "I don't know what that means."

The Conservative leader didn't offer a substantial answer and shifted the focus to knocking the Liberal government's plan for failing to meet Paris targets. The party's policy will be "well-documented and comprehensive," Scheer said.

Also on Sunday, Prime Minister Justin Trudeau appeared on popular Quebec program "Tout Le Monde En Parle" and criticized the opposition for failing to share their environmental plan to curb carbon emissions.

Even if Canada stopped everything tomorrow, and the other countries didn't have any solutions, it wouldn't make a big difference.Prime Minister Justin Trudeau on 'Tour Le Monde En Parle"

Trudeau has been grilled by the NDP for failing to raise emissions targets previously set by the Conservative government under Stephen Harper. The prime minister told the studio audience in Montreal that bumping targets would make a negligible difference.

"Even if Canada stopped everything tomorrow, and the other countries didn't have any solutions, it wouldn't make a big difference," he said in French. Trudeau contrasted the Liberals against the Conservatives, suggesting a price on pollution is better than offering no ideas on the environment.

One party has a plan to counter climate change, and another party has no interest, he said, adding he hopes Canadians will make the right choice come election time.