Trump questions United Nations global warming report

Catherine McKenna

Ninety-one authors and review editors from 40 countries prepared the IPCC report, which contains 6,000 scientific references.

The UN's Intergovernmental Panel on Climate Change (IPCC) report concludes human-caused greenhouse gas emissions have already pushed global average temperatures up by 1°C since the second half of the 19 century.

"The world we know today is not the world we will see in 50 years" if global warming exceeds 1.5 degrees Celsius, warned Debora Ley, one of 91 authors of the report looking at the feasibility of holding temperature rise to the most ambitious target set in the 2015 Paris Agreement.

To have a chance of meeting the 1.5 degrees goal, climate-changing emissions would have to plunge 45 percent by 2030 compared to 2010 levels, the report said.

The White House responded to a dire climate report released this weekend with an oft-repeated talking point: The nation's emissions have dropped since 2005.

The 2015 Paris Accord (which no major industrialised country is now on track to meet) set out to prevent more than 2 degrees Celsius warming from preindustrial times.

"It is pretty much impossible to reconcile Canada's commitment - which we agreed to in the Paris climate agreement - to avoiding 2 degrees and hopefully 1.5 degrees of warming, with decisions to expand the LNG industry", said Simon Donner, a climate scientist at the University of British Columbia.

The sea level would rise by 10 cm less by 2100, ice-free summers in the Arctic Ocean would be significantly less frequent, and coral reefs would decline by 70 to 90 per cent instead of disappearing entirely, the report said.

The IPCC report said at the current rate of warming, the world's temperatures would likely reach 1.5C between 2030 and 2052 after an increase of 1C above pre-industrial levels since the mid-1800s. On Friday, Ontario Premier Doug Ford joined Alberta's United Conservative Party leader Jason Kenney in Calgary for a rally against carbon taxes at the federal level and in Alberta.

Missing journalist's fiancée 'in a state of deep confusion and sadness'
In recent days, I've witnessed the work of the Turkish authorities as they monitor the situation closely. Khashoggi had been living in self-imposed exile in the United States for the past year.

We have been warned: There are now only 12 years left for us to stop global warming in its tracks.

President Donald Trump says he plans to review the United Nations report that warns of global warming-caused chaos unless drastic action is taken - although he says he's skeptical of its authors.

A summary of the Special Report on Global Warming is available here. The world now pumps more than 40 billion tons of Carbon dioxide into the atmosphere each year; the IPCC calls for that number to be cut by more than 1 billion tons per year over the next decade.

The IPCC noted in its report that the transitions needed are "unprecedented in terms of scale, but not necessarily in terms of speed, and imply deep emissions reductions in all sectors, a wide portfolio of mitigation options and a significant upscaling of investments in those options".

To limit global warming to 1.5 degree C is "possible within the laws of chemistry and physics", said Jim Skea, co-chair of IPCC Working Group III.

"The report will encourage the development of new technologies, which is important", Mr. Gore said in a statement.

The Paris Agreement, from which the US has effectively withdrawn under the Trump presidency, commits countries to "holding the increase in the global average temperature to well below 2 degrees Celsius above pre-industrial levels and pursuing efforts to limit the temperature increase to 1.5 degrees Celsius above pre-industrial levels".

They will also require considerable political engagement globally, as will reducing the amount of carbon being emitted.

"The window on keeping global warming below 1.5 degrees C is closing rapidly and the current emissions pledges made by signatories to the Paris Agreement do not add up to us achieving that goal", said King.

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