At a press briefing ahead of the Monday summit, Mr. Guterres was bullish on what he described as a new willingness by governments and companies to address climate change seriously. He said he hoped “a very meaningful number of countries” would declare their aim to reduce carbon emissions significantly and aim to be carbon-neutral by 2050.
“All of a sudden I started to feel there was momentum that was gaining, and this was largely due to the youth movement that started a fantastic, very dynamic impulse around the world,” Mr. Guterres said on Saturday as a United Nations Youth Climate Summit began.
There will be some important no-shows at the Monday meeting though. The United States, the largest economy in the world, has not even asked to take the podium. Nor has Brazil, home to most of the Amazon rainforest, often referred to as the lungs of the planet. Nor Japan, an economic powerhouse and the world’s seventh largest emitter of greenhouse gases.
So, Mr. Guterres also tempered expectations. He told reporters at a briefing on Friday that he did not expect announcements at the summit to yield emissions reductions that would measurably keep temperatures from rising to dangerous levels. At the current pace, global temperatures are set to rise beyond 3 degrees Celsius from preindustrial levels by the end of the century even if every country on Earth meets its goals under the 2015 Paris pact, which calls on nearly 200 nations to set voluntarily targets to reduce their emissions. Many big countries, including the United States, are not on track to meet their commitments.
At United Nations climate talks next year, countries face their next deadline to set more ambitious targets to reduce emissions. “The summit needs to be seen in a continuum,” Mr. Guterres said.
If anything, the Monday summit meeting, coming on the heels of huge youth protests worldwide, showed the vast distance between the urgency of climate action and the limits of diplomacy.