The US can still meet its commitments to fight climate change, despite President Donald Trump’s withdrawal from the Paris accord, former New York Mayor Michael Bloomberg has said.
He argued this could be done “through partnerships among cities, states and businesses”, saying Americans would not let Washington stand in their way.
Mr Bloomberg is the UN special envoy for cities and climate change.
Mr Trump said the 2015 Paris agreement would cost American jobs.
His decision, announced on Thursday, triggered widespread international condemnation.
China, the EU and India, which along with the US make up the four biggest emitters of carbon dioxide, restated their commitment to the accord.
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It commits the US and 194 other countries to keeping rising global temperatures “well below” 2 degrees C above pre-industrial levels and “endeavour to limit” them even more, to 1.5C.
The UN World Meteorological Organisation said that, in the worst scenario, the US pullout could add 0.3C to global temperatures by the end of the century.
“Americans don’t need Washington to meet our Paris commitments, and Americans are not going to let Washington stand in the way of fulfilling it,” Bloomberg said, following talks with French President Emmanuel Macron in Paris.
“I want the world to know that the US will meet its Paris commitments and that through partnerships among cities, states and businesses we will seek to remain part of the Paris agreement process.
“We are already halfway there and we can accelerate our process further even without any support from Washington,” Mr Bloomberg added.
Meanwhile, President Macron restated his position that the Paris accord was “irreversible” and would be implemented.
Why is Trump pulling out?
Mr Trump on Thursday characterised the Paris agreement as a deal that aimed to hobble, disadvantage and impoverish the US.
He said it would cost the US $3tn (£2.3tn) in lost GDP and 6.5 million jobs – while rival economies like China and India were treated more favourably.
Mr Trump said he was fulfilling his “solemn duty to protect America and its citizens”.
Secretary of State Rex Tillerson said the US had a “terrific record on reducing our own greenhouse gas emissions”.
The head of the US Environmental Protection Agency, Scott Pruitt, said exiting the Paris Agreement did not mean disengagement.
“The president said yesterday (Thursday) that Paris represents a bad deal for this country,” he told reporters at the White House.
“It doesn’t mean that we’re not going to continue the discussion to export our innovation, to export our technology to the rest of the world, to demonstrate how we do it better here.”
