Environment Minister Josh Frydenberg argued the agreement could still be meaningful without the U.S. because more than 190 countries had signed on and 146 nations had ratified the deal.
In a separate meeting with Pope Francis last week, the pontiff presented Trump with a gift - a copy of his two-year-old encyclical on climate change known as Laudato Si. Under the 2015 Paris agreement, the USA was supposed to slash its emissions by 26 to 28 percent from 2005 levels by 2025.
There has been widespread condemnation from Irish political and business figures of the decision by United States president Donald Trump to exit the Paris climate accord. In order to achieve that, the nations that agreed on the accord would have to reduce carbon dioxide and other emissions from the burning of fossil fuels. China has been actively promoting the Paris agreement and was one of the first countries to ratify it, he said.
When President Barack Obama met with world leaders in December 2015 in a conference that led to the 190-nation accord, Christie said during an interview on MSNBC that he does believe in climate change and that it is at least partially man-made.
He claimed that the agreement would impose "draconian financial and economic burdens", costing America $3 trillion in domestic economic activity and 6.5 million industrial and manufacturing jobs.
German Chancellor Angela Merkel's spokesman said the chancellor regrets America's departure from the deal and added that Germany will continue to try to "save our planet", while French President Emmanuel Macron responded in a video statement posted on Twitter. "We will double our efforts to fight climate change", he said.
Scientists say Earth is likely to reach more unsafe levels of warming sooner if the USA retreats from its pledge because America contributes so much to rising temperatures. The agreement aims at keeping the increase in average global temperature at below 2 degrees Celsius above pre-industrial levels, by reducing greenhouse gas emissions.
The global deal is a "vital instrument for our planet, societies and economies", they said. "I am going to discuss that with the highest officials in China this week".
The official Xinhua news agency said in a commentary that US President Donald Trump's announcement on Thursday came "to the regret of nearly all", although it was "anything but a surprise".
Mr Bainimarama said he did what he could to persuade Mr Trump otherwise but he's encouraged by the commitment being shown by countries including China, India, and members of the European Union.
Trump's decision sparked an instant wave of indignation both at home and overseas, with Obama saying the move meant the United States was "joining a handful of nations that reject the future". Several big coal companies, including Cloud Peak Energy, had publicly urged Trump to stay in the deal as a way to help protect the industry's mining interests overseas, though others asked Trump to exit the accord to help ease regulatory pressures on domestic miners. Apple, Starbucks, Gap, Nike, Adidas, L'Oreal and Monsanto all voiced their support for the Paris deal.
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