Paris: Emmanuel Macron plans to award multi-year grants for several US-based scientists to relocate to France, his office said on the eve of a climate summit hosted by the French President to raise finances to counter global warming.

Macron unveiled the "Make our Planet Great Again" grants after President Donald Trump in June said he was pulling the US out of an international accord to reduce greenhouse gas emissions that was brokered in Paris in 2015.

French President Emmanuel Macron, right, and US President Donald Trump in Paris in July. Credit:AP

Macron repeatedly tried to persuade the American leader to reverse his decision. In a statement, the Elysee Palace said 13 of the initial 18 grants will be awarded to scientists based in the United States.

"You will now settle in, develop projects, enrich French, European research, because we've decided to give even bigger resources and to fully recognise what you are doing," Macron said in a speech at Station F, a start-up incubator in Paris.