Scientist warning over climate change and global warming - CBBC Newsround

11 October, 2018, 23:02 | Author: Patty Aguilar
  • Landmark UN climate report warns time quickly running out

The report was prepared at the request of governments when the global pact to tackle climate change was agreed in Paris almost three years ago.

If global emissions continue at the current rate, the 91 authors of the report predict the world will reach 1.5 degrees by as early as 2040.

Action will also be needed to cut carbon emissions to zero by 2050.

To stop this happening, the world will need to make "unprecedented" changes in power generation, industry, transport, buildings and potential shifts in lifestyle such as eating less meat, according to the International Panel on Climate Change.

Here is what you need to know.

Where Has The Warning Come From?

Is It A Big Deal?

It examined pathways available to limit global warming to 1.5 degrees Celsius above pre-industrial levels, what it would take to achieve them and what the consequences could be.

The Paris Agreement was adopted by 195 countries at the 21st Conference of the Parties to the United Nations Framework Convention on Climate Change in December 2015, and created to strengthen the global response to the threat of climate change.

The United Nations Global climate watchdog has released an alarming report stating that the world has to change their dealings in order to avert facing the "unprecedented consequences" resulting from drastic climate change.

"The next few years are probably the most important in our history", said Debra Roberts, co-chair of the IPCC working group that addresses impacts, adaptation, and vulnerability, in the statement.

The study was urgent because CO2, the main greenhouse gas, reached record levels in the atmosphere past year, and current pledges to cut emissions under the Paris Agreement would lead to warming of about 3 deg C.

- 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. According to scientific predictions laid out in the report, this amount of warming would likely make extremely hot days both more common and more severe, thus increasing the incidence of forest fires and heat-related deaths.

A landmark report by the United Nations has warned that the world has just 12 years to halt global warming.

Many in Trump's Republican party are self-described climate change skeptics, questioning whether the overwhelming consensus of scientists around the world about manmade causes for ever-rising temperatures is accurate. Global sea levels rose 17cm in the 20th century.

Warming of 2C above pre-industrial levels had widely been thought of as the threshold beyond which unsafe climate change will occur, but vulnerable countries such as low-lying island states warn rises above 1.5C will threaten their survival.

Based on those promises, we are heading for 3C by 2100 and even warmer after that.

Coral reefs would decline by 70 per cent to 90 per cent at 1.5 deg C, whereas virtually all would be lost at 2 deg C.

Small islands and coastal cities such as NY and Mumbai risk going underwater without the installation of sea barriers.

What Has Been The Reaction So Far?

42,001 expert and Government review comments were considered. We can't find any historical analogies for it. Temperatures would be 1.5C higher between 2030 and 2052 if the world continued at its current pace, it warned. "The faster governments embrace the renewable energy revolution and move to protect communities at risk, the more lives, and livelihoods that will be spared".



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