Global Warming Fuels The Rise Of The Methane Tipping Point

methane threat 1 7

Higher temperatures and permafrost thaw could cause an increase of up to 50 per cent in emissions of a key greenhouse gas from northern lakes and ponds by 2100.

There is fresh concern among scientists over the rises they are detecting in one of the chief greenhouse gases, methane.

A team of researchers from universities in Sweden and the US says methane is increasing in the atmosphere fast enough for emissions of the gas possibly to rise by between 20% and 50% before the end of the century.

Over a century, methane is 25 times more powerful as a greenhouse gas than carbon dioxide, the main gas contributing to global warming. But over a 20-year period, methane is 84 times more potent than CO2.

Many methane sources are poorly understood, including lakes at high northern latitudes. But the researchers hope this may change.

Water bodies

A study in Nature Geoscience describes how compiling previously reported measurements made at 733 northern water bodies − from small ponds formed by beavers to large lakes formed by permafrost thaw or ice-sheets – has enabled researchers to estimate emissions over large scales more accurately.

“The release of methane from northern lakes and ponds needs to be taken seriously,” says study leader Martin Wik, a PhD student at the Department of Geological Sciences and Bolin Centre for Climate Research, Stockholm University.

“These waters are significant, contemporary sources because they cover large parts of the landscape. They are also likely to emit even more methane in the future.”

“Efforts to reduce human-induced warming are even more urgent in order to minimise this type of feedback of natural greenhouse gas emissions”

Average temperatures in the Arctic are rising twice as fast as they are anywhere else in the world. At high northern latitudes, this warming means longer ice-free seasons. Together with permafrost thaw, this is likely to fuel methane release from lakes, potentially causing emissions to increase by between a fifth and a half by 2100.

Change on this scale would probably generate a positive feedback in future warming, causing emissions to increase still further.

“This means that efforts to reduce human-induced warming are even more urgent in order to minimise this type of feedback of natural greenhouse gas emissions,” says a co-author of the study, David Bastviken, senior lecturer in environmental change at Linköping University. Sweden. “In a sense, every reduction in emissions from fossil fuels is a double victory.”

Faster than expected

Two reports published last month raised concerns that methane emissions could be increasing faster than expected.

The first found that the quantity of methane leaking from the frozen soil during the long Arctic winters is probably much greater than climate models estimate.

Another study by US scientists said lakes worldwide are warming by an average of more than 1°C every 30 years − faster than either the oceans or the atmosphere.

The warming is expected to increase algal blooms, and to mean global methane emissions will rise by 4% over the next decade. – Climate News Network

About the Author

Alex Kirby is a British journalistAlex Kirby is a British journalist specializing in environmental issues. He worked in various capacities at the British Broadcasting Corporation (BBC) for nearly 20 years and left the BBC in 1998 to work as a freelance journalist. He also provides media skills training to companies, universities and NGOs. He is also currently the environmental correspondent for BBC News Online, and hosted BBC Radio 4's environment series, Costing the Earth. He also writes for The Guardian and Climate News Network. He also writes a regular column for BBC Wildlife magazine.

enafarzh-CNzh-TWdanltlfifrdeiwhihuiditjakomsnofaplptruesswsvthtrukurvi

follow InnerSelf on

facebook icontwitter iconyoutube iconinstagram iconpintrest iconrss icon

 Get The Latest By Email

Weekly Magazine Daily Inspiration

LATEST VIDEOS

The Great Climate Migration Has Begun
The Great Climate Migration Has Begun
by Super User
The climate crisis is forcing thousands around the world to flee as their homes become increasingly uninhabitable.
The Last Ice Age Tells Us Why We Need To Care About A 2℃ Change In Temperature
The Last Ice Age Tells Us Why We Need To Care About A 2℃ Change In Temperature
by Alan N Williams, et al
The latest report from the Intergovernmental Panel on Climate Change (IPCC) states that without a substantial decrease…
Earth Has Stayed Habitable For Billions Of Years – Exactly How Lucky Did We Get?
Earth Has Stayed Habitable For Billions Of Years – Exactly How Lucky Did We Get?
by Toby Tyrrell
It took evolution 3 or 4 billion years to produce Homo sapiens. If the climate had completely failed just once in that…
How Mapping The Weather 12,000 Years Ago Can Help Predict Future Climate Change
How Mapping The Weather 12,000 Years Ago Can Help Predict Future Climate Change
by Brice Rea
The end of the last ice age, around 12,000 years ago, was characterised by a final cold phase called the Younger Dryas.…
The Caspian Sea Is Set To Fall By 9 Metres Or More This Century
The Caspian Sea Is Set To Fall By 9 Metres Or More This Century
by Frank Wesselingh and Matteo Lattuada
Imagine you are on the coast, looking out to sea. In front of you lies 100 metres of barren sand that looks like a…
Venus Was Once More Earth-like, But Climate Change Made It Uninhabitable
Venus Was Once More Earth-like, But Climate Change Made It Uninhabitable
by Richard Ernst
We can learn a lot about climate change from Venus, our sister planet. Venus currently has a surface temperature of…
Five Climate Disbeliefs: A Crash Course In Climate Misinformation
The Five Climate Disbeliefs: A Crash Course In Climate Misinformation
by John Cook
This video is a crash course in climate misinformation, summarizing the key arguments used to cast doubt on the reality…
The Arctic Hasn't Been This Warm For 3 Million Years and That Means Big Changes For The Planet
The Arctic Hasn't Been This Warm For 3 Million Years and That Means Big Changes For The Planet
by Julie Brigham-Grette and Steve Petsch
Every year, sea ice cover in the Arctic Ocean shrinks to a low point in mid-September. This year it measures just 1.44…

LATEST ARTICLES

trees to plant for climate2
Plant These Trees To Improve City Life
by Mike Williams-Rice
A new study establishes live oaks and American sycamores as champions among 17 “super trees” that will help make cities…
north sea sea bed
Why We Must Understand Seabed Geology To Harness The Winds
by Natasha Barlow, Associate Professor of Quaternary Environmental Change, University of Leeds
For any country blessed with easy access to the shallow and windy North Sea, offshore wind will be key to meeting net…
3 wildfire lessons for forest towns as Dixie Fire destroys historic Greenville, California
3 wildfire lessons for forest towns as Dixie Fire destroys historic Greenville, California
by Bart Johnson, Professor of Landscape Architecture, University of Oregon
A wildfire burning in hot, dry mountain forest swept through the Gold Rush town of Greenville, California, on Aug. 4,…
China Can Meet Energy and Climate Goals Capping Coal Power
China Can Meet Energy and Climate Goals Capping Coal Power
by Alvin Lin
At the Leader’s Climate Summit in April, Xi Jinping pledged that China will “strictly control coal-fired power…
Blue water surrounded by dead white grass
Map tracks 30 years of extreme snowmelt across US
by Mikayla Mace-Arizona
A new map of extreme snowmelt events over the last 30 years clarifies the processes that drive rapid melting.
A plane drops red fire retardant on to a forest fire as firefighters parked along a road look up into the orange sky
Model predicts 10-year burst of wildfire, then gradual decline
by Hannah Hickey-U. Washington
A look at the long-term future of wildfires predicts an initial roughly decade-long burst of wildfire activity,…
White sea ice in blue water with the sun setting reflected in the water
Earth’s frozen areas are shrinking 33K square miles a year
by Texas A&M University
The Earth’s cryosphere is shrinking by 33,000 square miles (87,000 square kilometers) per year.
A row of male and female speakers at microphones
234 scientists read 14,000+ research papers to write the upcoming IPCC climate report
by Stephanie Spera, Assistant Professor of Geography and the Environment, University of Richmond
This week, hundreds of scientists from around the world are finalizing a report that assesses the state of the global…

 Get The Latest By Email

Weekly Magazine Daily Inspiration

New Attitudes - New Possibilities

InnerSelf.comClimateImpactNews.com | InnerPower.net
MightyNatural.com | WholisticPolitics.com | InnerSelf Market
Copyright ©1985 - 2021 InnerSelf Publications. All Rights Reserved.