U.S. president Donald Trump announced yesterday in the White House Rose Garden in Washington, D. C., that the United States is withdrawing from the 2015 Paris climate change accord. Credit: Olivier Douliery/Abaca (Sipa via AP Images)

U.S. president Donald Trump declared yesterday that the United States will withdraw from the landmark Paris climate accord to limit greenhouse gases. Trump, in a much anticipated speech in the White House Rose Garden, called the accord unfair to the United States and said that the country will immediately cease implementing the agreement.

Specifically, Trump said that the United States would stop both fulfilling its individual climate plan and contributing to the Green Climate Fund to assist developing nations with climate change–related investments.

“It is time to exit the Paris Accord and time to pursue a new deal that protects the environment, our companies, our citizens, and our country.”

“The Paris Accord would undermine our economy, hamstring our workers, weaken our sovereignty, impose unacceptable legal risks, and put us at a permanent disadvantage to the other countries of the world,” Trump said. “It is time to exit the Paris Accord and time to pursue a new deal that protects the environment, our companies, our citizens, and our country.”

Trump said he is prepared to renegotiate the agreement. “I’m willing to immediately work with Democratic leaders to either negotiate our way back into Paris, under the terms that are fair to the United States and its workers, or to negotiate a new deal that protects our country and its taxpayers,” he said.

The Paris Accord

The Paris climate change agreement to limit greenhouse gases aims to hold the increase in global average temperature to well below 2°C above preindustrial levels and to pursue efforts to limit the increase to 1.5°C. It also calls for boosting climate change adaptation measures, helping poor countries to address climate-related challenges, and updating countries’ individual climate plans every 5 years.

The accord entered into force in November 2016, less than 12 months after 195 nations agreed to it in 2015. The actual U.S. withdrawal from the accord is still a few years away. Under the agreement, parties wishing to leave the pact can give notice of their intent to do so only after the agreement has been in force for 3 years. Then another year must elapse after that notice is given before the withdrawal can occur.

Reactions from Scientists

The president’s decision drew sharp rebukes from some prominent scientists.

“The president’s decision to withdraw from the Paris treaty was apparently based on considerations other than climate science.”

“Given the overwhelming evidence supporting the need for urgent action to address the risks of climate change, the president’s decision to withdraw from the Paris treaty was apparently based on considerations other than climate science,” Marcia McNutt, president of the U.S. National Academy of Sciences, said in comments provided to Eos. “The decision to withdraw increases the likelihood that much less acceptable climate intervention solutions will be required to avoid exceeding dangerous planetary warming thresholds. One approach, carbon capture and storage, is more expensive than the Paris treaty. The other solution, spraying aerosol particles into the stratosphere to cool Earth, is untested and far more risky than the Paris treaty.”

She added in a tweet that “POTUS [the president] ignoring best climate/economic science shows lack of science advice in White House.”

Climate scientist Michael Mann told Eos that “the challenge of averting dangerous and irreversible climate change and massive coastal inundation, devastating floods, and droughts is that much more [of] an uphill climb with Trump’s pullout from the Paris agreement.”

“By withdrawing from the Paris climate agreement to double down on a coal and fossil fuel energy agenda, Trump has engaged in unilateral disarmament in the economic arms race that is the transition to clean energy. Other nations, like China and the European Union, now take the lead in global leadership, moral authority, and economic competitiveness,” said Mann, professor of atmospheric science at Pennsylvania State University in University Park.

Low Impact

Other scientists welcomed Trump’s move but said it will have little impact.

“It is hard to see how Trump’s withdrawal from the Paris Accord is going to make much of a difference,” said Patrick Michaels, director of the Center for the Study of Science at the Cato Institute, a Washington, D. C., think tank dedicated to principles of limited government and free markets. “After all, the economically driven shift from coal to gas for electrical generation will continue or even accelerate,” he noted as one of the reasons not to expect much difference.

Protesters gathered outside the White House on 1 June to protest Trump’s decision to withdraw the U.S. from the Paris accord.
Protesters gathered outside the White House in Washington yesterday to protest President Donald Trump’s decision to withdraw the United States from the Paris climate change agreement signed in 2015. Credit: AP Photo/Susan Walsh

Judith Curry, president and director of the Climate Forecast Applications Network, headquartered in Reno, Nev., told Eos, “Even if you believe the climate models, the emissions reductions pledged for the Paris accord would prevent only a few tenths of a degree of warming by the end of the 21st century. Further, there is strong impetus in certain regions of the U.S. and in certain industrial sectors to reduce CO2 [carbon dioxide] emissions, which probably won’t be affected much by President Trump’s position on the issue.”

She told Eos that the best outcome to the U.S. withdrawal from the accord would be “to take a fresh look at the problem,” including seeking a better understanding of natural climate variability and its interaction with human-caused climate change and a better understanding of the socioeconomic harms and benefits of a changing climate.

Failed Leadership, Missed Opportunities

Many environmental and business leaders and other observers said Trump’s decision harms efforts to slow down greenhouse gas emissions, U.S. climate leadership, economic benefits for the country from clean energy, and national security.

“President Trump’s decision to withdraw from the Paris climate agreement is the biggest failure of leadership in American history.”

“President Trump’s decision to withdraw from the Paris climate agreement is the biggest failure of leadership in American history,” said Mark Reynolds, executive director of the Citizens’ Climate Lobby, an organization based in Coronado, Calif.

Bob Inglis, a former Republican member of Congress, said that by abandoning the pact, Trump adds a new dimension to the word “hoax” as it is used with regard to climate change. Trump himself “is choosing to become the worldwide face of climate hoaxerism,” said Inglis, who is executive director of republicEn.org, a Fairfax, Va.–based group that promotes free enterprise action on climate change.

Peter de Menocal, director of Columbia University’s Center for Climate and Life, told Eos that the decision was bad for many reasons, including economics. “It’s bad for the U.S. economy because the U.S. will not participate in decarbonizing the global economy and repowering the planet—the biggest entrepreneurial opportunity in generations,” he said. “The rest of the world is leading this revolution and will benefit from it, while the current administration relegates a generation of Americans to the technological equivalent of selling buggy whips.”

In a tweet, Todd Stern, former U.S. special envoy for climate change during the Obama administration, urged continued action on climate change. “Trump just betrayed the world. Now the world will fight back,” he tweeted.

Flexible Agreement Gives Other Options

Not only does withdrawal cause harm, but it wasn’t necessary to address the concerns Trump raised about the pact, said Susan Biniaz, lead U.S. climate lawyer for the U.S. Department of State from 1989 until earlier this year. Pulling out “is against all U.S. interests—diplomatic, economic, and environmental,” she said.

Withdrawal is “completely unnecessary given the flexible nature of the Paris framework,” she told Eos. Biniaz, who teaches law at Columbia University’s law school in New York, said that concerns Trump raised about the agreement “can easily be addressed without any renegotiation.” She said that because each party to the accord can unilaterally change its own emissions target because financial contributions are voluntary and do not require any renegotiation, “it is unclear what would need to be ‘renegotiated,’ even if other countries were willing to do so, which I doubt.”

Reuters reported yesterday that French president Emmanuel Macron told Trump that the accord could not be renegotiated. In a separate statement yesterday, Macron called Trump’s decision “an actual mistake both for the U.S. and for our planet.”

—Randy Showstack (@RandyShowstack), Staff Writer

Editor’s Note: The American Geophysical Union, which publishes Eos.org, issued a statement yesterday about President Trump’s decision to withdraw from the Paris climate accord.


Showstack, R. (2017), Trump says United States will withdraw from Paris climate accord, Eos, 98, https://doi.org/10.1029/2017EO075283. Published on 02 June 2017.

Text © 2017. The authors. CC BY-NC-ND 3.0
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