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methane

septembre 2024

Global average surface temperatures shattered all-time records in 2023 at 1.45 ± 0.12 ◦C above pre- industrial levels (WMO 2024). Worsened by climate change-induced drought, Canadian wildfires burned 18.5 million hectares, nearly three-times more land area than in any previous year on record (NRC 2023).

août 2024

New studies suggest global warming boosts natural methane releases, which could undermine efforts to cut emissions of the greenhouse gas from fossil fuels and agriculture.

mai 2024

Oil and gas equipment intended to cut methane emissions is preventing scientists from accurately detecting greenhouse gases and pollutants, a satellite image investigation has revealed. Energy companies operating in countries such as the US, UK, Germany and Norway appear to have installed technology that could stop researchers from identifying methane, carbon dioxide emissions and pollutants at industrial facilities involved in the disposal of unprofitable natural gas, known in the industry as flaring.

décembre 2023

Alberta owns a new record. The province is home to an abandoned and unplugged gas well that leaks methane, an explosive greenhouse gas, into the atmosphere at the highest rate ever recorded in North America.

juillet 2023

Permafrost and glaciers in the high Arctic form an impermeable ‘cryospheric cap’ that traps a large reservoir of subsurface methane, preventing it from reaching the atmosphere. Cryospheric vulnerability to climate warming is making releases of this methane possible. On Svalbard, where air temperatures are rising more than two times faster than the average for the Arctic, glaciers are retreating and leaving behind exposed forefields that enable rapid methane escape. Here we document how methane-rich groundwater springs have formed in recently revealed forefields of 78 land-terminating glaciers across central Svalbard, bringing deep-seated methane gas to the surface. Waters collected from these springs during February–May of 2021 and 2022 are supersaturated with methane up to 600,000 times greater than atmospheric equilibration. Spatial sampling reveals a geological dependency on the extent of methane supersaturation, with isotopic evidence of a thermogenic source. We estimate annual methane emissions from prog
As the Arctic warms, shrinking glaciers are exposing bubbling groundwater springs which could provide an underestimated source of the potent greenhouse gas methane, finds new research published in Nature Geoscience. The study, led by researchers from the University of Cambridge and the University Center in Svalbard, Norway, identified large stocks of methane gas leaking from groundwater springs unveiled by melting glaciers.

mars 2023

Vast releases of gas, along with future ‘methane bombs’, represent huge threat – but curbing emissions would rapidly reduce global heating

novembre 2022

If 15 planned coal mining projects in Australia enter operation they would boost the country’s methane emissions from the dirtiest fossil fuel by nearly a fifth, according to an analysis from energy think tank Ember.
The EU is on track to break a promise to cut methane emissions by 30% by 2030 made due to a “policy vacuum” on livestock emissions, a report has warned.Most of Europe’s methane emissions come from agriculture – particularly livestock – but the EU has avoided using policy levers such as its €387bn common agricultural policy to directly tackle the problem
Scientists warn world ‘is heading in wrong direction’ amid rise in nitrous oxide, carbon dioxide and methane.Atmospheric levels of all three greenhouse gases have reached record highs, according to a study by the World Meteorological Organization, which scientists say means the world is “heading in the wrong direction”.
Methane emissions in the UK could be cut by more than 40% by 2030 with a raft of inexpensive policies, according to an environmental thinktank. The government has pledged to cut emissions of methane, a greenhouse gas that has more than 80 times the global heating power of CO2, by at least 30% by 2030. The move was trumpeted by Boris Johnson when he was prime minister after the UK joined more than 100 other countries to make the pledge at Cop26 in Glasgow.
From the seemingly inexorable increase of carbon dioxide in the atmosphere to the rapid growth in green energy

octobre 2022

WMO records biggest increase in methane concentrations since start of measurements

septembre 2022

Shallow deposits of frozen methane beneath oceans may be more vulnerable to thawing than previously known.
Levels of the gas are growing at a record rate and natural sources like wetlands are the cause, but scientists don’t know how to curb it.

juillet 2022

Greenhouse gas has undergone rapid acceleration and scientists say it may be due to atmospheric changes

juin 2022

Methane has a mixture of both natural and anthropogenic sources. Around 40% of methane emissions comes from natural sources, while 60% comes from anthropogenic sources such as agriculture, fossil fuel exploitation and landfills.In situ methane measurements from 2020 showed the largest annual increase of methane concentrations since the 1980s, with this record surpassed in 2021. The year of 2020 was unique owing to the global pandemic, yet methane concentrations continued to rise despite a reduction in economic activity.
A new Imperial analysis has found that biogas and biomethane, while more climate friendly, leak up to twice as much methane as previously thought. Although biogas and biomethane remain climate-friendlier than non-renewable alternatives, the researchers call for better monitoring and fixing of leaks to ensure biogas and biomethane continue to live up to their green credentials.

février 2022

Rapidly rising levels of atmospheric methane are "very bad news for humanity and the planet," warned one observer.

janvier 2022

Unlike carbon dioxide, atmospheric methane concentrations are rising faster than at any time in the past two decades. The fossil fuel, agriculture and waste sectors are equally responsible.