Leaders from Nigeria and 100 other countries have announced and reiterated new national climate action plans at a summit on the sidelines of the 80th UN General Assembly in New York.

The summit was convened by secretary-general António Guterres alongside President Luiz Inácio Lula Da Silva of Brazil, host of the COP30 conference, which will be held in November in the Amazonian city of Belém.

At the Climate meeting for heads of state and government, Vice-President Kashim Shettima announced Nigeria’s new National Determined Contributions under the Paris Agreement.

In a strong show of momentum, major economies, including China, the world’s largest emitter, and Nigeria, unveiled economy-wide targets to slash emissions across all greenhouse gases and sectors, making pledges that signal a more unified push toward deep decarbonisation.

Meanwhile, other nations stepped forward with bold commitments, including scaling up renewable energy, cracking down on methane emissions, protecting vital forests, and accelerating the phase-out of fossil fuels.

Together, these announcements mark a turning point in global climate ambition, setting the stage for COP30 and a decade of decisive action.

At the outset of the summit, leading climate scientists Johan Rockström and Katharine Hayhoe provided a stark assessment of global efforts so far to honour the Paris Agreement, the landmark 2015 treaty that seeks to limit global temperature rise to 1.5 degrees Celsius above pre-industrial levels.

Ten years on, greenhouse gas emissions that cause global warming continue to rise, and annual global temperature change exceeded 1.5 degrees for the first time last year.

“This is a deep concern,” Mr Rockström, chief scientist at Conservation International. “An even deeper concern is that warming appears to be accelerating, outpacing emissions.”

Yet it is still possible to meet the 1.5-degree goal, and the two experts highlighted solutions, including transitioning from fossil fuels to clean energy sources and transforming food systems to eliminate waste.

Under the Paris Agreement, governments are required to submit climate plans, known as Nationally Determined Contributions, which outline bold actions for the next decade.

The treaty has made a difference, the secretary-general said, as projected global temperature rise dropped from four degrees to less than three over the past 10 years, if current plans are fully implemented.

“Now, we need new plans for 2035 that go much further, and much faster,” he said. “Delivering dramatic emissions cuts aligned with 1.5 degrees; covering all emissions and sectors; and accelerating a just energy transition globally.”

He stressed that COP30 “must conclude with a credible global response plan to get us on track” and outlined five crucial areas for action: accelerating the transition to clean energy, drastically reducing methane gas emissions, promoting forest conservation, reducing emissions from heavy industry, and ensuring climate justice for developing nations.

With just a few weeks until COP30, Mr Lula wondered “whether the world will arrive in Belém with its homework done.”

He said that “the energy transition opens the door to a productive and technological transformation comparable to the Industrial Revolution” and NDCs “are the road map that will guide each country through this change”.

For its part, Brazil has committed to reducing all greenhouse gas emissions between 59 per cent and 67 per cent, covering all sectors of the economy, he said, and continues efforts to end deforestation by 2030.

At the meeting, President Xi Jinping of China announced that by 2035, the country will reduce economy-wide net greenhouse gas emissions by seven to 10 per cent from peak levels.

The country will also increase the share of non-fossil fuels in total energy consumption to over 30 per cent, expand wind and solar power capacity sixfold compared to 2020 levels, and make “new energy vehicles” the mainstream in new vehicle sales, he said in a video message.

Meanwhile, “the clean transition is moving on” in the European Union, where emissions are down nearly 40 per cent since 1990, said European Commission President Ursula von der Leyen.

European countries are also “doubling down on global partnerships” and will remain the world’s largest providers of climate finance, she said, while also mobilizing up to 300 billion Euros to support the clean energy transition worldwide.

For Belize, the 1.5-degree goal “is not an aspiration” but “a threshold between hope and hardship, between flourishing communities and forced displacement, between shared prosperity and irreversible loss,” Prime Minister Johnny Briceño said.

Its new NDC covers concrete actions, such as expanding renewable electricity generation to meet 80 per cent of domestic needs by 2035, restoring approximately 25,000 hectares of degraded forest, and planting one million trees over the next three years.

(NAN)