Joe Biden has said he would immediately return the United States to the Paris accord if elected president, a day after Washington withdrew from the climate change pact.
“Today, the Trump Administration officially left the Paris Climate Agreement. And in exactly 77 days, a Biden Administration will rejoin it,” tweeted Biden, who, if elected, would take the presidential oath on January 20.
Biden has proposed a $1.7 trillion plan to take the US, the world’s second-biggest carbon emitter, to net-zero by 2050.
Trump has aggressively championed the fossil fuel industry, questioned the science of climate change and weakened other environmental protections.
However, a report last month by the group America’s Pledge found that even without help from Washington, action from cities, states and businesses would still make it possible for the US to cut emissions by 37 percent by 2030.
Trump gave a one-year notice to leave the Paris accord on November 4, 2019. Biden would need to officially notify the UN of US willingness to return.
Such a notification would be “the easy part”, Andrew Light, a climate adviser to former President Barack Obama, told AFP news agency.
The US will still be “outside the conversation” when Britain and the UN host a climate summit on December 12, the fifth anniversary of the COP21 conference in Paris that resulted in the agreement.
According to the UN’s Intergovernmental Panel on Climate Change, in order to have a chance of keeping end-of-century warming below 1.5 degrees Celsius (2.7 Fahrenheit), global emissions need to reach net-zero around mid-century.
The target warming level was chosen to avoid triggering a series of catastrophic climate tipping points that could force humanity to inhabit only the planet’s far northern and southern latitudes.
Niklas Hohne, a climate scientist at Wageningen University in the Netherlands and a member of a simulation group called Climate Action Tracker, wrote on Twitter that “Biden’s climate plan alone could reduce temperature increase in the order of 0.1 degree Celsius.
“This election could be a make or break point for international climate policy. Every tenth of a degree counts,” he said.
Environmentalists say Trump’s announcement that he would withdraw from the Paris agreement three years ago made it easier for countries such as Australia, Saudi Arabia and Brazil to soften their own ambitions.
Many of the ravaging impacts of climate change are already felt today: loss of sea ice, with the Arctic expected to be ice-free by mid-century; accelerated sea-level rise, longer and more intense droughts and heatwaves, stronger hurricanes and shifts in precipitation patterns.
Small island nations face being completely submerged.
Even if the US rejoins, it will face a credibility gap – after all, it was also an architect of the Kyoto agreement that it never ratified.
That makes it crucial to ensure a shift towards climate action is permanent and not something a future Republican administration will undo, said Light.
“We know from polling that acting on climate is not this red versus blue, Republican versus Democrat, issue out there in the real world,” he said. A recent Pew poll found that more than 80 percent of Americans agree that humans contribute to climate change, including a plurality of Republicans.
Key to this plan will be Biden delivering on his pledge of massive economic stimulus and job creation.
There are already signs that market forces are starting to tip the energy balance from fossil fuels to renewables, but the transition has a long way to go.
Despite Trump’s efforts to revive the coal industry, more capacity was retired under his presidency than during Obama’s second term, while renewable energy hit record highs in production and consumption in 2019.
Natural gas, driven by hydraulic fracturing or “fracking,” continues to drive the energy mix, accounting for 35 percent of production.
Biden views the fuel as a “bridge” to renewable energy and says he won’t ban fracking.
UN spokesman Stephane Dujarric on Wednesday highlighted recent commitments by South Korea and Japan as signs of progress.
“There is a growing coalition of nations committed to achieving carbon neutrality by mid-century,” Stephane said.
“Our support, our belief in the need for strong and active Paris Agreement remains unchanged,” he added.
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