UN report on global warming carries life-or-death warning

Professor Bronwyn Hayward of the University of Canterbury says New Zealanders will have to move urgently to cut greenhouse gas emissions

Professor Bronwyn Hayward of the University of Canterbury says New Zealanders will have to move urgently to cut greenhouse gas emissions

The report from the Intergovernmental Panel on Climate Change, the United Nations body for assessing the science related to climate change, revealed that limiting global warming to 1.5 degrees Celsius "would require rapid, far-reaching and unprecedented changes in all aspects of society", according to a statement announcing the climate change report.

"Limiting warming to 1.5°C is possible within the laws of chemistry and physics but doing so would require unprecedented changes", said Jim Skea, co-chair of IPCC Working Group III.

One key fact was that by the year 2100, global sea level rise would be as much as 10 cm lower with with an increase of 1.5°C compared to 2°C.

Three years ago, nations in the Paris agreement issued a pledge reduce greenhouse gases with the stringent goal of limiting the rise in temperature to 1.5 degrees Celsius (2.7 degrees Fahrenheit) above preindustrial levels, circa the 1850s.

A major report on the impact of global warming, to be published on Monday, will warn about the speed and scale of measures required to keep temperature rises to a level beyond which many vulnerable countries say their survival is at risk.

When the target was put into the Paris Agreement, relatively little was known about the climate risks that would be avoided in a 1.5C warmer world compared with a 2C warmer world, or about the action needed to limit temperature rises to that level.

Organizations and investors that back green energy said the report makes it clear that the world should accelerate the shift away from coal, the most polluting fossil fuel.

However, limiting global warming global warming to 1.5 C would require "rapid, far-reaching and unprecedented changes in all aspects of society".

In its landmark report, the United Nations has warned that time is running out to avert disaster, adding that avoiding global climate chaos will require a major transformation of society and the world economy that is "unprecedented in scale".

The statutory Council for Sustainable Development was conducting a public engagement exercise and would report to the bureau late next year, he said.

D1. Estimates of the global emissions outcome of current nationally stated mitigation ambitions as submitted under the Paris Agreement would lead to global greenhouse gas emissions18 in 2030 of 52-58 GtCO2eq yr-1 (medium confidence). It's intended as a guide for policymakers who are aiming to limit temperature rise to the target 1.5 degrees Celsius. "Human-induced warming has already reached about 1°C (1.8°F) above pre-industrial levels at the time of writing of this Special Report".

The IPCC is the leading world body for assessing the science related to climate change, its impacts and potential future risks, and possible response options.

Tomorrow, October 9, the Environment Council of the European Union would meet to discuss Carbon dioxide emission standards, climate change and biodiversity. Whether it is rice, maize or soy, much of the yield for these crops drop dramatically to at most 6 per cent under these conditions.

Global temperature is now rising 0.2C with each decade, and it is estimated we will reach 1.5C by 2040.

Approved by the IPCC in South Korea on Saturday ahead of COP24 in Poland in December, Global Warming of 1.5°C was produced by 91 authors and reviewers from 40 countries.

That 1.5 degrees C target is also an entirely fabricated artefact.

Coal consumption by Indian thermal generators needs to be cut by two thirds within 2030 and to nearly zero by 2050 if India has to limit temperature rise to 1.5 degrees said Greenpeace India in a statement. By 2050, they will need to reach "net zero" - any further CO₂ emissions due to human activity would then have to be matched by deliberate removal of CO₂ already in the atmosphere, including by planting trees. Countries need to undertake massive de-carbonisation while the developed countries must also address consumption in their countries. But what difference can a measly 0.5°C really make?

For scientists there is a bit of "wishful thinking" that the report will spur governments and people to act quickly and strongly, one of the panel's leaders, German biologist Hans-Otto Portner, said.

Many people might think that they have little personal involvement with any of these - but the IPCC authors say that's not the case.

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