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Slash emissions or miss 1.5 deg C goal: UN
THE world will miss its chance to avert climate disaster without an immediate and all-but-impossible fall in fossil fuel emissions, the United Nations said on Tuesday in its annual assessment on greenhouse gases.
The United Nations Environment Programme (UNEP) said that global emissions need to fall by 7.6 per cent, each year, every year until 2030 to limit global temperature rises to 1.5 degrees Celsius.
The harsh reality is that emissions have risen on average 1.5 per cent annually over the last decade, hitting a record 55.3 billion tonnes of CO2 or equivalent greenhouse gases (GHG) in 2018 - three years after 195 countries signed the Paris treaty on climate change.
The World Meterological Organization said on Monday that atmospheric greenhouse gas concentrations hit an all-time record in 2018.
Authors of the annual UNEP report were uncharacteristically direct in their 2019 assessment of the gap between actual and desirable emissions levels.
"The summary findings are bleak," they wrote. "Countries collectively failed to stop the growth in global GHG emissions, meaning that deeper and faster cuts are now required."
How deep and how fast? Nations must halve their 2018 pollution levels by 2030 to meet the Paris Agreement goal of limiting heating to 1.5 degrees Celsius.
The new report is part of a larger trend among high-profile scientific assessments published in the last 18 months, each featuring increasingly blunt language from a community not known for it.
Examples include three studies from the UN-backed Intergovernmental Panel on Climate Change. They addressed limiting global heating to 1.5 degrees Celsius, how land is changing around the world and the effects of higher temperatures on iced areas and oceans.
This latest research - the 10th edition of the annual Emissions Gap report - is a hard check on sentiment, said Leah Stokes, assistant professor of political science at the University of California, Santa Barbara.
Current policies could lead to 60 billion metric tons of climate pollution in 2030. To have a shot at staying below 1.5 degrees, that figure needs to be 25 billion tons.
Of course, "bleak" doesn't mean hopeless, the researchers said. Political and civic attention to climate change is increasing, led in many nations by younger citizens.
Renewable energy is the cheapest source of power in much of the world and new utility-scale systems can already compete with the marginal operating costs of existing coal plants. Countries know what they need to do, even if they're not yet doing it.
In 2009, G20 nations agreed to phase out fossil-fuel subsidies, although none have actually set a deadline for doing so.
Despite scientists' pleas to zero-out emissions by mid-century, only a few nations - and none in the G20 - have given the UN climate administration a timeline for achieving it.
There's still a path to climate safety, and most of it runs through those G20 countries, since they make up almost 80 per cent of emissions. As a group, the world's biggest economies are likely to meet 2020 climate pledges made in 2010, with the notable exception of, among others, the United States, Canada and Mexico.
The new report breaks out specific recommendations for seven key emitters: the US, Australia, Brazil, Canada, Japan, South Korea and South Africa.
China, said the UN, should ban all new coal-fired power plants, despite last week's news that the country is still on a coal-plant binge) and make electricity carbon-free.
The US should regulate power plants, introduce carbon pricing and decarbonise its buildings and transportation systems, the UN says - but the realities of domestic politics in America make that unlikely.
The report makes clear that the time for half-measures has passed. "Incremental changes will not be enough, and there is a need for rapid and transformational action," it said.
Climate-proofing the global economy "will require fundamental, structural changes" along with "investments in defensive and adaptive infrastructure" and a massive shift in "values, norms, consumer culture and world views".
Those changes will require at least US$1.6 trillion in energy-sector investment annually through 2050, they estimate.
Astonishingly, some nations are still increasing their plans for fossil-fuel production, making an already bad situation worse. The UNEP last week issued its first Production Gap Report, a related initiative that looks at the scale of fossil-fuel resources nations can or expect to develop.
Overall, the world may produce 50 per cent more coal, oil and gas than is compatible with a 2 degree Celsius scenario, and 120 per cent more than a 1.5 degree scenario requires. BLOOMBERG, AFP