Urgent, collective actions required limiting global warming: United Nations body

12 October, 2018, 00:30 | Author: Harriet Bell
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"The next few years are probably the most important in our history".

"Limiting warming to 1.5 degrees Celsius is possible within the laws of chemistry and physics but doing so would require unprecedented changes", said Jim Skea, who co-chairs the IPCC group that studies the mitigation of climate change.

An increase of 1.5C will still carry climate-related risks for nature and mankind, but at a lower level than a rise of 2C, the report summary said.

The report, which maps out four pathways to cap Earth's average surface temperature at 1.5 degrees Celsius (2.7 degrees Fahrenheit) above pre-industrial levels indicates that changes in individual behavior can make a difference.

The 48th IPCC session in South Korea's western port city of Incheon brought together about 570 representatives from 135 countries and global organisations, Xinhua news agency reported.

Tweeting shortly after the report was launched UN Secretary-General António Guterres said that it is not impossible to limit global warming to 1.5°C, according to the report. But for almost every component of the climate system, the SR15 report shows that limiting the warming to 1.5°C will make our life and our children's life easier when it comes to mitigation and adaptation.

To keep temperatures from rising to more than 1.5C in the long term, countries need to cut carbon emissions by 45% by 2030 and to net zero by 2050, with steep cuts in other greenhouse gases such as methane.

Allowing the global temperature to temporarily exceed or "overshoot" 1.5ºC would mean a greater reliance on techniques that remove Carbon dioxide from the air to return global temperature to below 1.5°C by 2100.

Increased droughts and poverty brought on by the atmosphere's temperature climbing up to 1.5 degrees Celsius, if greenhouse gas emissions continue at the current rate.

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They're calling for "rapid, far-reaching and unprecedented changes" across society to prevent world temperatures from rising by two degrees Celsius.

WA's Ningaloo Reef could be wiped out within three decades unless fossil fuels are phased out and the world changes dramatically to deal with a warming planet, according to a landmark report.

Pan Africa Director of Oxfam International goes reporting: "To do nothing more and simply follow the commitments made in the Paris Agreement condemns the world to 3 degrees of warming".

- It will require a huge ramp-up in renewables so they generate 70-85% of electricity supplies by 2050, while coal power's share of the mix tumbles to nearly nothing.

This report shows the longer we leave it to act, the more hard, the more expensive and the more risky it will be.

Countries in the southern hemisphere would see the most drastic effects.

The science shows that a 2C rise will lead to greater sea level rises, more heatwaves and extreme rainstorms, more people facing water shortages and drought, lower yields for some crops and greater impacts on wildlife than 1.5C.

Currently, the world has seen 1C of warming over the past 115 years, according to a U.S. report last year. "The faster governments embrace the renewable energy revolution and move to protect communities at risk, the more lives, and livelihoods that will be spared".

The report fired up activists even as critics dismissed the deadline as another arbitrary "climate tipping point", as Climate Depot's Marc Morano put it.

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