New United Nations report details looming climate crisis

New United Nations report details looming climate crisis

"This is concerning because we know there are so many more problems if we exceed 1.5 degrees C global warming, including more heatwaves and hot summers, greater sea level rise, and, for many parts of the world, worse droughts and rainfall extremes", Andrew King, a lecturer in climate science at the University of Melbourne, said in a statement. But it will be tough, given where we're starting from.

Greenpeace activists display a big banner reading "We still have hope, Climate action now!" during an activity prior to a press conference of the Intergovernmental Panel for Climate Change (IPCC) at Songdo Convensia in Incheon on October 8, 2018.

Advice from the Energy Security Board suggests the dumped national energy guarantee would have reduced household power bills by $150 a year. The report also waded into murky questions about ethics and values, stressing that governments must address climate change and sustainable development in parallel, or risk exacerbating poverty and inequality.

Negative impacts of climate change occur on a continuum, and defining a point at which climate change becomes unsafe is hard and contentious.

Besides special reports, the IPCC has issued five major Assessment Reports that serve as the scientific foundation for United Nations climate talk.

At 1.5 degrees of warming, compared with pre-industrial levels, as much as 90 per cent of the world's coral reefs will die, and virtually all would be lost if temperatures rose two degrees, or about twice the increase so far.

The IPCC provides scientific advice to the UNFCCC, which makes policy, and the IPCC itself has never stated a temperature target.

"There are lots of reasons other than climate change for shifting diets". Coral reefs have a particularly dire outlook. The problem with even a slight shift in goals is that the scientific work done in advance of the global talks hadn't provided results for a 1.5°C scenario. The previous IPCC assessment, released in 2014, estimated that the world would breach 1.5 °C by the early 2020s at the current rate of emissions.

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Climate change will make some types of extreme weather more common.

Dr. Michiel Schaeffer, director of science, said: "The IPCC confirms that it is feasible to hold warming to 1.5°, or very close to it, throughout the 21st Century, but that there is no time for complacency".

U.N. World Meteorological Organization (WMO) secretary-general Petteri Taalas told reporters in Geneva: "There is clearly need for a much higher ambition level to reach even a 2 degrees target, we are moving more towards 3 to 5 (degrees) at the moment". Holding warming to 1.5 °C would reduce that risk by half. It is based on more than 6,000 scientific references and contributions from thousands of experts and government reviewers around the world.

The "good" news is that this report slightly raised the estimated amount of greenhouse gas we can emit before crossing the 1.5°C or 2.0°C limits (in line with recent research we have covered). Considering that such techniques could save us even in the event that we overshoot the 1.5-degree-Celsius mark, this route sounds pretty appealing. To hit and keep that 1.5 degrees target, net anthropogenic Carbon dioxide emissions must come down 45% from 2010 levels by 2030 and reach net zero around 2050. Net zero would have to occur by around 2075 to meet a 2℃ target.

Society would have to enact "unprecedented" changes to how it consumes energy, travels and builds to meet a lower global warming target or it risks increases in heat waves, flood-causing storms and the chances of drought in some regions as well as the loss of species, a United Nations report said on Monday. The IPCC recognises the challenges are "unprecedented in scale" but notes, for example, "the feasibility of solar energy, wind energy and electricity storage mechanisms have substantially improved over the past few years".

Similarly, when it comes to heat waves, in a world that's warmed by up 1.5C, about 14% of the population are exposed to a heat wave every five years.

While energy systems play a massive role in the future of climate change, the report does not end there.

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