The Guardian (UK)
As the UN sits down for its annual climate conference this week, many experts believe we have passed the point of no return
December 2, 2018
by Robin McKie
On Sunday morning (December 2nd) hundreds of politicians, government officials and scientists will gather in the grandeur of the International Congress Centre in Katowice, Poland. It will be a familiar experience for many. For 24 years the annual UN climate conference has served up a reliable diet of rhetoric, backroom talks and dramatic last-minute deals aimed at halting global warming.
But this year’s event will be a grimmer affair – by far. As recent reports have made clear, the world may no longer be hovering at the edge of destruction but has probably staggered beyond a crucial point of no return. Climate catastrophe is now looking inevitable. We have simply left it too late to hold rising global temperatures to under 1.5o C and so prevent a future of drowned coasts, ruined coral reefs, spreading deserts and melted glaciers.
One example was provided last week by a UN report that revealed attempts to ensure fossil fuel emissions peak by 2020 will fail. Indeed the target will not even be reached by 2030. Another, by the World Meteorological Organization, said the past four years had been the warmest on record and warned that global temperatures could easily rise by 3-5o C by 2100, well above that sought-after goal of 1.5o C. The UK will not be exempt either. The Met Office said summer temperatures could now be 5.4o C hotter by 2070.
At the same time, prospects of reaching global deals to halt emissions have been weakened by the spread of rightwing populism. Not much to smile about in Katowice.
Nor will the planet’s woes end in 2100. Although most discussions use the year as a convenient cut-off point for describing Earth’s likely fate, the changes we have already triggered will last well beyond that date, said Svetlana Jevrejeva, at the National Oceanography Centre, Liverpool. She has studied sea-level rises that will be triggered by melting ice sheets and expanding warm seawater in a world 3-5o C hotter than it was in pre-industrial times, and concludes these could reach 0.74 to 1.8 metres by 2100. This would be enough to deluge Pacific and Indian Ocean island states and displace millions from Miami, Guangzhou, Mumbai and other low-lying cities. The total cost to the planet could top £11 trillion.
Even then the seas will not stop rising, Jevrejeva added. “They will continue to climb for centuries even after greenhouse-gas levels have been stabilised. We could experience the highest-ever global sea-level rise in the history of human civilisation.”
Vast tracts of prime real estate will be destroyed – at a time when land will be needed with unprecedented desperation. Earth’s population stands at seven billion today and is predicted to rise to nine billion by 2050 and settle at over 11 billion by 2100 – when climate change will have wrecked major ecosystems and turned farmlands to dust bowls.
Unfortunately many experts believe Earth’s population will actually peak well beyond 11 billion. “It could reach 15 billion,” said Sarah Harper, of Oxford’s Institute of Population Ageing. “All sorts of factors suggest women, particularly in sub-Saharan Africa, will still want to have relatively high numbers of children and this might keep the world’s population approaching 15 billion rather than 12 billion.”
The world will have double its present numbers – but with hugely reduced areas of fertile land to provide food. We will be living in a shrunken, scorched planet bursting with human beings. Somaliland gives a grim vision of this future.
In the past few years climate change has killed 70% of its livestock and forced tens of thousands of families to flee from its scorched interior to live in refugee camps. “You can touch it, the climate change, in Somaliland. It is real. It is here,” the country’s environment minister, Shukri Ismail Bandare, said in the Financial Times last week.
Sudan and Kenya are also victims of a drought that has dried the Horn of Africa faster than at any other time in the past 2,000 years. Similarly, in Vietnam, thousands a year are abandoning the once fertile Mekong Delta as rising seawater pollutes paddy fields. By 2050, the World Bank says more than 140 million will become climate refugees.
It will be bad for humans, but catastrophic for Earth’s other inhabitants. Arctic ice loss threatens polar bears, droughts imperil monarch butterflies, and koala habitats are being destroyed by bush fires. In all, about a sixth of all species now face extinction, say scientists, although in the end no creature or plant will be safe. “Even the most resilient species will
inevitably fall victim as extreme stresses drive ecosystems to collapse,” said Giovanni Strona of Europe’s Joint Research Centre in a report last week on climate change.
Scientists warned more than 30 years ago that such a future lay ahead, but nothing was done to stave it off. Only dramatic measures are now left to those seeking to save our burning planet, and these can have grim political consequences. In France, for example, President Macron’s new levies on fossil fuels, introduced to cut emissions and to fund renewable energy projects, triggered riots. Had only modest changes been enacted a few decades ago there would be no trouble today, say analysts.
But the most telling example is provided by the US, which has emitted about a third of the carbon responsible for global warming. Yet it has essentially done nothing to check its annual rises in output. Lobbying by the fossil fuel industry has proved highly effective at blocking political change – a point most recently demonstrated by groups such as the Competitive Enterprise Institute and the Heartland Institute, which helped persuade President Trump to pull out of the Paris agreement, thus dashing the planet’s last hope of ecological salvation. “The coalition used its power to slow us down precisely at the moment when we needed to speed up,” said the environmentalist Bill McKibben in the New Yorker. “As a result, the particular politics of one country for one half-century will have changed the geological history of the Earth.”
No region of the US has more to lose from climate change than southern Florida. If scientists’ worst predictions are realised, an entire metropolitan area, currently inhabited by more than six million people, is likely to be swamped by a 1.5-metre sea-level rise before the end of this century, a rise that could see the tourist mecca of Miami simply disappear.
It’s a doomsday scenario that has united the leaders of Miami-Dade county and the cities of Miami and Miami Beach in an attempt to find solutions to the most severe effects of rising oceans before it is too late. Their plan to combat the physical, economic and social challenges of climate change, as part of the global 100 Resilient Cities programme, will play a key role in determining whether the low-lying region will still be habitable in the coming decades or surrendered to the ever-rising Atlantic.
“It’s a problem that can be managed, it’s not a problem that can be fixed and you walk away from,” said Susanne Torriente, chief resilience officer for Miami Beach, where hundreds of millions of taxpayers’ dollars have already been spent elevating roads, constructing higher sea walls and investing in modern, high-capacity pumps and stormwater drainage systems.
“Every generation will add to the work that we have begun,” Torriente says. “We are always
learning, it’s a constant process of learning, re-evaluating and improving.”
Up to a million Florida homes, worth an estimated $371billion (£290bn, are at risk of tidal flooding by 2100, one recent study calculated, but the threats facing the greater Miami region are not just coastal. Hurricanes are becoming more powerful because of global warming, say scientists, who point to the destruction wrought by Hurricane Michael in October, while the combination of a low water table and high “king” tides – occurring in autumn – causes regular inland flooding even on dry days.
This means that the new joint action plan being worked on by city and county officials has to be further-reaching than anything that has preceded it, Torriente says. “Our resilience journey began with the climate work, the storm water, [but] this strategy will be much broader and will be defining resilience not only in terms of climate and flooding, but also mobility and housing, property, and how to recover quickly in the event of a hurricane in south Florida.”
These moves reflect the sense of urgency being felt in Florida, where the state leadership has been criticised for neglecting the environment. Its newly elected senator, Rick Scott, banned staff from using the term climate change during his time as governor of Florida, and will be a close Washington ally of President Donald Trump, who took the US out of the Paris climate agreement.
“We’ll be much more successful if we have more cooperation and more attention at all levels of government, [because] it’s a problem for all of us,” Torriente says. “But we do what we can. Everything we are doing is funded locally, so we can continue to invest.”
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