[D66] Climate change escalating so fast it is 'beyond point of no return'
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jugg at ziggo.nl
Wed Dec 18 15:22:04 CET 2019
Climate change escalating so fast it is 'beyond point of no return'
By
PETER WALKER
independent.co.uk
4 min
Global warming is beyond the “point of no return”, according to the lead
scientist behind a ground-breaking climate change study.
The full impact of climate change has been underestimated because
scientists haven't taken into account a major source of carbon in the
environment.
Dr Thomas Crowther’s report has concluded that carbon emitted from soil
was speeding up global warming.
The findings, which say temperatures will increase by 1C by 2050, are
already being adopted by the United Nations.
Dr Crowther, speaking to The Independent, branded Donald Trump’s
sceptical stance on climate change as “catastrophic for humanity”.
“It’s fair to say we have passed the point of no return on global
warming and we can’t reverse the effects, but certainly we can dampen
them,” said the biodiversity expert.
“Climate change may be considerably more rapid than we thought it was.”
The report, by an exhaustive list of researchers and published in the
Nature journal, assembled data from 49 field experiments over the last
20 years in North America, Europe and Asia.
It found that the majority of the Earth’s terrestrial store of carbon
was in soil, and that as the atmosphere warms up, increasing amounts are
emitted in what is a vicious cycle of “positive feedbacks”.
The study found that 55bn tonnes in carbon, not previously accounted for
by scientists, will be emitted into the atmosphere by 2050.
“As the climate warms, those organisms become more active and the more
active they become, the more the soil respires – exactly the same as
human beings," said Dr Crowther, who headed up the study at Yale Climate
& Energy Institute, but is now a Marie Curie fellow at the Netherlands
Institute of Ecology.
“Our study shows that this major feedback has already certainly started,
and it will have a significant impact on the climate in the coming
decades. This information will be critical as we strive to understand
how the climate is going to change in the future. And it will also be
critical if we are to generate meaningful strategies to fight against it.”
Dr Crowther, a 30-year-old Cardiff University Phd graduate originally
from North Wales, predicts climate change will lead to widespread
migrations and antagonism among communities.
“These effects of climate change will certainly be felt
disproportionately by poorer people, particularly the billions of people
whose livelihoods are intrinsically linked to the land,” he added.
“But the impacts on sea-level rise, ocean currents and the health of
natural ecosystems are equally devastating for a vast multitude of reasons.”
During his presidential campaign, Mr Trump described climate change as a
“total hoax” and said it was a concept created by the Chinese to
manipulate US markets.
What
What's the effect of global warming on our seasons?
The billionaire tycoon also tweeted in 2014: “It’s late in July and it
is really cold outside in New York. Where the hell is GLOBAL WARMING???”
White House chief of staff Reince Preibus has since said the 70-year-old
will “have an open mind” but Mr Trump’s threat to pull out of the 2015
Paris climate deal still lingers.
The increasingly popular right-wing Breitbart News website's reporting
has repeatedly poured scorn on climate change theories.
Climate change: It
Climate change: It's "game over" for planet earth
“I think this is catastrophic for humanity,” said Dr Crowther.
“Uncertainty is nothing like a reason enough to suggest climate change
isn’t happening. There’s a nice analogy; if you step in front of an
oncoming bus, no doctor in the world can tell you how damaging the
impact is going to be.
“But we do know the damage is going to be huge. This alone should be
enough information to persuade us to avoid the bus.”
The last two decades of the 20th century were the hottest in 400 years.
He added: “Sceptics often say that scientists are just saying that
climate change is real so that they can keep their jobs.
“I would just like to stress that I could get a hell of a lot more money
than academia offers me if I were to do a study that suggests that
climate change is not real."
It's late in July and it is really cold outside in New York. Where
the hell is GLOBAL WARMING??? We need some fast! It's now CLIMATE CHANGE
— Donald J. Trump (@realDonaldTrump) July 29, 2014
Prof Ivan Janssens, seen as one of the godfathers in the global change
ecology field, said the research had provided essential data to the
climate change model.
The Intergovernmental Panel on Climate Change (IPCC), established by the
UN and World Meteorological Organisation, is incorporating the study's data.
“This study is very important, because the response of soil carbon
stocks to the ongoing warming, is one of the largest sources of
uncertainty in our climate models,” said Prof Janssens, of the
University of Antwerp.
“I’m an optimist and still believe that it is not too late, but we
urgently need to develop a global economy driven by sustainable energy
sources and start using CO2, as a substrate, instead of a waste product.
“If this happens by 2050, then we can avoid warming above 2C. If not, we
will reach a point of no return and will probably exceed 5C.”
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