USA mayors also voiced their criticism of Trump's decision, vowing to recommit to local efforts to curb climate change.
Despite this, a number of figures from U.S. industry expressed their dismay at Mr Trump's move. "This administration is abdicating its leadership and taking a backseat to other countries in the global fight against climate change".
By abandoning the world's chief effort to slow the tide of planetary warming, Trump was fulfilling a top campaign pledge after weeks of building up suspense over his decision. That was a blunt rejection of Mr. Trump's assertion that he will eventually negotiate a better deal on climate.
Bloomberg also called for Americans to lead an effort "from the bottom up", while also noting that "there isn't anything Washington can do to stop us".
China emerged as Europe's unlikely partner in this and in other areas - underlining Mr Trump's isolation on many issues. Among the critics were Mayor de Blasio and Governor Cuomo, who ordered that various prominent structures be lit up green to emphasize their opposition to climate change.
Secretary of State Rex Tillerson, who had urged Trump to stay in the Paris deal, did not attend the ceremony, nor did Trump's son-in-law Jared Kushner and his wife, Ivanka, both close advisers to the president who supported staying in the agreement.
Working with the National Climate Action Agenda and 81 other cities to undertake additional actions to meet the 1.5 degrees Celsius target. He'd essentially ditched the deal long before Thursday, they say. "California's economy and America's economy is boosted by following the Paris agreement". German Chancellor Angela Merkel called it "extremely regrettable" while Canadian Prime Minister Justin Trudeau called it "disheartening".
"Sustainability has always been part of our DNA: it's integral to how we live and work and is essential to our environment", Plank said.
Brussels and Beijing believe in "the full implementation, without nuances, of the Paris climate agreement", Juncker said, and underlined that there can be "no backsliding".
She said China is willing to strengthen effective communication and practical cooperation with the European Union to safeguard and advance the process of multilateral governance on climate change.
The Paris agreement is an attempt to deal with the real world as it is likely to be in a few decades from now. "Italy is committed to reducing (carbon) emissions, to renewable energy, sustainable development".
Murkowski, who has described herself as an "agnostic" when it comes to the Paris climate agreement, said the country is obligated to help address climate change whether or not it's part of the global agreement.
"To my mind.it represents a complete misunderstanding of the nature of the problem, the scope of the problem", Thomson said.
"We believe that abiding by the accord, without significant changes, would have substantially impacted the U.S. economy, increased electricity costs and required the power sector to rely on less diverse and more intermittent energy", it said. Pittsburgh Mayor Bill Peduto, a Democrat, has been an outspoken supporter of the Paris accord, and tweeted after Trump's announcement that "as the Mayor of Pittsburgh, I can assure you that we will follow the guidelines of the Paris Agreement for our people, our economy & future".
Plank is one of several CEOs to speak out against Trump's decision. He is also a UN Special Envoy for Cities and Climate Change. "Yet, recent observations show they are now on the way towards overcoming this challenge", the report says.
Thomson echoed that. "Fairness is completely in the eye of the beholder".
The US is the world's second-largest emitter of carbon, behind only China.
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