Temperatures likely to rise by 3-5C above pre-industrial levels even if Paris goals met
Sharp and potentially devastating You do not have permission to view the full content of this post. Log in or register now. are now inevitable even if the world succeeds in cutting greenhouse gas emissions in line with the Paris agreement, You do not have permission to view the full content of this post. Log in or register now. has found.
Winter temperatures at the north pole are likely to rise by at least 3C above pre-industrial levels by mid-century, and there could further rise to between 5C and 9C above the recent average for the region, according to the UN.
Such changes would result in rapidly melting ice and permafrost, leading to sea level rises and potentially to even more destructive levels of warming. Scientists fear Arctic heating could trigger a climate You do not have permission to view the full content of this post. Log in or register now. as melting permafrost releases the powerful greenhouse gas methane into the atmosphere, which in turn could create a runaway warming effect.
“What happens in the Arctic does not stay in the You do not have permission to view the full content of this post. Log in or register now.,” said Joyce Msuya, the acting executive director of UN Environment. “We have the science. Now more urgent climate action is needed to steer away from tipping points that could be even worse for our planet than we first thought.”
The findings, presented at the UN Environment assembly in Nairobi on Wednesday, give a stark picture of one of the planet’s most sensitive regions and one that is key to the fate of the world’s climate.
Last year’s stark warnings from the Intergovernmental Panel on Climate Change, setting out the dramatic impacts of 1.5C of global warming, You do not have permission to view the full content of this post. Log in or register now. such as melting permafrost.
If melting permafrost triggers a tipping point, the likely results would be global temperature rises well in excess of the 2C set as the limit of safety under the Paris agreement. Nearly half of You do not have permission to view the full content of this post. Log in or register now. could be lost even if global carbon emissions are held within the Paris agreement limits, according to the UN study.
Even if all carbon emissions were to be halted immediately, the Arctic region would still warm by more than 5C by the century’s end, compared with the baseline average from 1986 to 2005, according to the study You do not have permission to view the full content of this post. Log in or register now..
That is because You do not have permission to view the full content of this post. Log in or register now.. The oceans also have become vast stores of heat, the effect of which is being gradually revealed by changes at the poles and on global weather systems and will continue to be felt for decades to come.
The assembly heard that there was still a need to fulfill the aims of the 2015 Paris agreement on climate change and to take further action that could stave off some of the worst effects of warming in the near term. “We need to make substantial near-term cuts in greenhouse gas emissions, You do not have permission to view the full content of this post. Log in or register now. and other so-called short-lived climate pollutants all over the world,” said Kimmo Tiilikainen, Finland’s environment minister.
Making drastic cuts to black carbon and short-lived pollutants such as methane could You do not have permission to view the full content of this post. Log in or register now., according to previous research.
You do not have permission to view the full content of this post. Log in or register now.
Sharp and potentially devastating You do not have permission to view the full content of this post. Log in or register now. are now inevitable even if the world succeeds in cutting greenhouse gas emissions in line with the Paris agreement, You do not have permission to view the full content of this post. Log in or register now. has found.
Winter temperatures at the north pole are likely to rise by at least 3C above pre-industrial levels by mid-century, and there could further rise to between 5C and 9C above the recent average for the region, according to the UN.
Such changes would result in rapidly melting ice and permafrost, leading to sea level rises and potentially to even more destructive levels of warming. Scientists fear Arctic heating could trigger a climate You do not have permission to view the full content of this post. Log in or register now. as melting permafrost releases the powerful greenhouse gas methane into the atmosphere, which in turn could create a runaway warming effect.
“What happens in the Arctic does not stay in the You do not have permission to view the full content of this post. Log in or register now.,” said Joyce Msuya, the acting executive director of UN Environment. “We have the science. Now more urgent climate action is needed to steer away from tipping points that could be even worse for our planet than we first thought.”
The findings, presented at the UN Environment assembly in Nairobi on Wednesday, give a stark picture of one of the planet’s most sensitive regions and one that is key to the fate of the world’s climate.
Last year’s stark warnings from the Intergovernmental Panel on Climate Change, setting out the dramatic impacts of 1.5C of global warming, You do not have permission to view the full content of this post. Log in or register now. such as melting permafrost.
If melting permafrost triggers a tipping point, the likely results would be global temperature rises well in excess of the 2C set as the limit of safety under the Paris agreement. Nearly half of You do not have permission to view the full content of this post. Log in or register now. could be lost even if global carbon emissions are held within the Paris agreement limits, according to the UN study.
Even if all carbon emissions were to be halted immediately, the Arctic region would still warm by more than 5C by the century’s end, compared with the baseline average from 1986 to 2005, according to the study You do not have permission to view the full content of this post. Log in or register now..
That is because You do not have permission to view the full content of this post. Log in or register now.. The oceans also have become vast stores of heat, the effect of which is being gradually revealed by changes at the poles and on global weather systems and will continue to be felt for decades to come.
The assembly heard that there was still a need to fulfill the aims of the 2015 Paris agreement on climate change and to take further action that could stave off some of the worst effects of warming in the near term. “We need to make substantial near-term cuts in greenhouse gas emissions, You do not have permission to view the full content of this post. Log in or register now. and other so-called short-lived climate pollutants all over the world,” said Kimmo Tiilikainen, Finland’s environment minister.
Making drastic cuts to black carbon and short-lived pollutants such as methane could You do not have permission to view the full content of this post. Log in or register now., according to previous research.
You do not have permission to view the full content of this post. Log in or register now.