Tuesday, 23 April, 2019

'Unprecedented' climate steps are needed, United Nations says

Act Now, Idiots: Everything You Need To Know About The UN Climate Change Report Major UN report says climate change is worse than first thought
Deanna Wagner | 10 October, 2018, 08:57

The Arctic, which would be ice-free about once per century at 1.5 degrees of temperature rise, would be ice-free once per decade at 2 degrees.

Reaffirming the Federal Government's commitment to the Paris agreement, which aims to cut 2005-level emissions 26 per cent by 2030, Environment Minister Melissa Price said the IPCC report would be considered as part of a review of Australia's contribution to global action on climate change.

Dramatically reducing the use of coal, planting huge swathes of land with carbon-absorbing forest or powering most transport with electricity are no longer sufficient to bring about the swift transition needed, they said, with warming expected to pass the 1.5 degree Celsius (2.7 degrees Fahrenheit) mark in as little as 12 years. However, she says Canada will not increase its targets to cut emissions until the plan laid out in 2016 is fulfilled.

The data in the UN's new document is unlikely to sway Trump, who has vowed to pull the US out of the Paris Agreement and has taken steps to dismantle every major policy created to reduce the nation's carbon footprint.

President Donald Trump acknowledged receiving an alarming report on climate change from the United Nations' Intergovernmental Panel on Climate Change Tuesday, at the same time saying "I want to look at who drew it". Human-produced Carbon dioxide emissions would have to drop by 45 percent from 2010 levels by 2030, reaching "net zero" by 2050, according to the report. And carbon dioxide emissions must reach net zero around 2075 - meaning the amount of carbon dioxide entering the atmosphere equals the amount being removed. But IPCC also adds that the effectiveness of CO2-capturing technologies is still unproven on a large-scale.

Limiting global warming to 1.5 °C would require rapid, far- reaching and unprecedented changes in all aspects of society, the IPCC said in a new assessment.

Princeton University climate scientist Michael Oppenheimer said extreme weather, especially heat waves, will be deadlier if the lower goal is passed. As Henn and Mann both indicate, the IPCC report is based on the consensus view of the hundreds of scientists who make up the IPCC - and its been consistently true that some of the most recent (and increasingly worrying) scientific findings have not yet found enough support to make it into these major reports which rely on near-unanimous agreement. With a 2°C rise, the impacts can be too serious for communities to adapt.

It is thought that by 2100, global sea rise levels would be 10cm lower that if global warming were to be at 2C.

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Global warming of 1.5°C may force many marine species to relocate to higher altitudes and deal a blow to many ecosystems.

The IPCC report also advises a shift to less energy-intensive household goods such as smart thermostats and air conditioners. But several studies conclude that India is vulnerable to climate change impacts.

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. The most-affected areas in India will be mega cities, coastal areas, high-mountain and small-island regions.

Another SLCP is methane, produced when vegetation rots and from animals, and in the form of natural gas from fossil fuel exploration. Global sea levels rose 17cm in the 20th century.

"Keeping warming below 1.5C will be very, very hard", said Dessler. Without an active participation of the USA, this will be impossible.

The day after an global panel of scientists issued a stark warning about the short window in which world leaders can act to avoid catastrophic climate change, the president of the United States didn't comment on whether the US accepts or will act on the findings. Denying the reality of climate change is not going to help anyone.

Fellow author Valerie Masson-Delmotte said: "The report shows that we are at a crossroads. The report would not have been released without consensus of all".