UN chief voices 'hope' Trump will understand climate urgency

During his campaign Trump has called global warming a hoax and has threatened to cancel the global pact

UN chief Ban Ki-moon voiced hope today that Donald Trump will "vary" his stance denying climate change as world leaders gathered in Morocco to keep a planetary rescue plan on track.

A week after the election to the White House of Trump, who has called global warming a "hoax" and has threatened to "cancel" the global pact, Ban said: "I am sure he will make a good, wise decision".

He has spoken to the president-elect, the UN secretary-general said, and he was "optimistic" that the business mogul "will hear and understand the seriousness and urgency of addressing climate change."

Ban was addressing journalists in Marrakesh before opening the "high-level segment" of an annual UN climate meeting -- the first since last year's adoption of the Paris Agreement to stave off calamitous global warming.

Trump's election has been uppermost on the minds of many delegates and negotiators gathered since last Monday to thrash out a roadmap for putting the agreement into action.

"I have explained at length about our expectations and our hope that... President-elect Trump will hear and understand the seriousness and urgency of addressing climate change," said Ban.

"As the president of the US I am sure he will understand this, he will listen, he will vary his campaign remarks," he added.

It was usual for campaigning politicians to engage in rhetoric, but a president had to understand "the reality of the whole world's problems," said the UN chief.

"No country, however resourceful or powerful, is immune from the impacts of climate change," he added.

"My sense is that as a very successful business person in the past... I believe that he understands that there are market forces already at work on this issue."

The hard-fought Paris Agreement set an objective of limiting average global warming to two degrees Celsius (3.6 degrees Fahrenheit) over pre-Industrial Revolution levels by cutting planet-heating greenhouse gases from burning coal, oil, and gas.

Many fear that withdrawal by the United States, a champion of the deal under President Barack Obama, would shatter the political goodwill built up over years of negotiations, and put the very planet-saving goals of the deal at risk.