Methane emissions ≈ Methane emissions
View article
Assessment of methane emissions from the U.S. oil and gas supply chain Open
A leaky endeavor Considerable amounts of the greenhouse gas methane leak from the U.S. oil and natural gas supply chain. Alvarez et al. reassessed the magnitude of this leakage and found that in 2015, supply chain emissions were ∼60% highe…
View article
Very Strong Atmospheric Methane Growth in the 4 Years 2014–2017: Implications for the Paris Agreement Open
Atmospheric methane grew very rapidly in 2014 (12.7 ± 0.5 ppb/year), 2015 (10.1 ± 0.7 ppb/year), 2016 (7.0 ± 0.7 ppb/year), and 2017 (7.7 ± 0.7 ppb/year), at rates not observed since the 1980s. The increase in the methane burden began in 2…
View article
Increasing anthropogenic methane emissions arise equally from agricultural and fossil fuel sources Open
Human activities emitted a record 364 million metric tonnes of methane in 2017 (range 340-381), jeopardizing climate stabilization.
View article
Role of atmospheric oxidation in recent methane growth Open
Significance Methane, the second most important greenhouse gas, has varied markedly in its atmospheric growth rate. The cause of these fluctuations remains poorly understood. Recent efforts to determine the drivers of the pause in growth i…
View article
Quantifying methane emissions from the largest oil-producing basin in the United States from space Open
Satellite observes large methane emissions from the Permian Basin in the United States.
View article
Airborne methane remote measurements reveal heavy-tail flux distribution in Four Corners region Open
Significance Fugitive methane emissions are thought to often exhibit a heavy-tail distribution (more high-emission sources than expected in a normal distribution), and thus efficient mitigation is possible if we locate the strongest emitte…
View article
The growing role of methane in anthropogenic climate change Open
Unlike CO _2 , atmospheric methane concentrations are rising faster than at any time in the past two decades and, since 2014, are now approaching the most greenhouse-gas-intensive scenarios. The reasons for this renewed growth are still un…
View article
Interpreting contemporary trends in atmospheric methane Open
Atmospheric methane plays a major role in controlling climate, yet contemporary methane trends (1982–2017) have defied explanation with numerous, often conflicting, hypotheses proposed in the literature. Specifically, atmospheric observati…
View article
The rumen microbiome: a crucial consideration when optimising milk and meat production and nitrogen utilisation efficiency Open
Methane is generated in the foregut of all ruminant animals by the microorganisms present. Dietary manipulation is regarded as the most effective and most convenient way to reduce methane emissions (and in turn energy loss in the animal) a…
View article
Global assessment of oil and gas methane ultra-emitters Open
Methane emissions from oil and gas (O&G) production and transmission represent a considerable contribution to climate change. These emissions comprise sporadic releases of large amounts of methane during maintenance operations or equipment…
View article
Methane Mitigation: Methods to Reduce Emissions, on the Path to the Paris Agreement Open
The atmospheric methane burden is increasing rapidly, contrary to pathways compatible with the goals of the 2015 United Nations Framework Convention on Climate Change Paris Agreement. Urgent action is required to bring methane back to a pa…
View article
Emerging role of wetland methane emissions in driving 21st century climate change Open
Significance Conventional greenhouse gas mitigation policies ignore the role of global wetlands in emitting methane (CH 4 ) from feedbacks associated with changing climate. Here we investigate wetland feedbacks and whether, and to what deg…
View article
Bovine Host Genetic Variation Influences Rumen Microbial Methane Production with Best Selection Criterion for Low Methane Emitting and Efficiently Feed Converting Hosts Based on Metagenomic Gene Abundance Open
Methane produced by methanogenic archaea in ruminants contributes significantly to anthropogenic greenhouse gas emissions. The host genetic link controlling microbial methane production is unknown and appropriate genetic selection strategi…
View article
Full adoption of the most effective strategies to mitigate methane emissions by ruminants can help meet the 1.5 °C target by 2030 but not 2050 Open
Significance Agricultural methane emissions must be decreased by 11 to 30% of the 2010 level by 2030 and by 24 to 47% by 2050 to meet the 1.5 °C target. We identified three strategies to decrease product-based methane emissions while incre…
View article
Global distribution of methane emissions, emission trends, and OH concentrations and trends inferred from an inversion of GOSAT satellite data for 2010–2015 Open
We use 2010–2015 observations of atmospheric methane columns from the GOSAT satellite instrument in a global inverse analysis to improve estimates of methane emissions and their trends over the period, as well as the global concentration o…
View article
Satellite observations reveal extreme methane leakage from a natural gas well blowout Open
Methane emissions due to accidents in the oil and natural gas sector are very challenging to monitor, and hence are seldom considered in emission inventories and reporting. One of the main reasons is the lack of measurements during such ev…
View article
Intermittency of Large Methane Emitters in the Permian Basin Open
The Permian Basin is the largest and fastest growing oil and gas (O&G) producing region in the United States. We conducted an extensive airborne campaign across the majority of the Permian in September–November, 2019 with imaging spectrome…
View article
Dietary manipulation: a sustainable way to mitigate methane emissions from ruminants Open
Methane emission from the enteric fermentation of ruminant livestock is a main source of greenhouse gas (GHG) emission and a major concern for global warming. Methane emission is also associated with dietary energy lose; hence, reduce feed…
View article
Methane emissions partially offset “blue carbon” burial in mangroves Open
Water and sediment methane emissions have the potential to offset “blue carbon” burial in mangrove coastal ecosystems.
View article
Satellite-based survey of extreme methane emissions in the Permian basin Open
An unexpectedly high number of extreme methane plumes is detected in the Permian basin with new satellite technology.
View article
Emissions of methane from northern peatlands: a review of management impacts and implications for future management options Open
Northern peatlands constitute a significant source of atmospheric methane ( CH 4 ). However, management of undisturbed peatlands, as well as the restoration of disturbed peatlands, will alter the exchange of CH 4 with the atmosphere. The a…
View article
Closing the methane gap in US oil and natural gas production emissions inventories Open
Methane (CH 4 ) emissions from oil and natural gas (O&NG) systems are an important contributor to greenhouse gas emissions. In the United States, recent synthesis studies of field measurements of CH 4 emissions at different spatial scales …
View article
Acclimation of methane emissions from rice paddy fields to straw addition Open
The effects of straw incorporation on CH 4 emissions from rice fields decrease over time, due to increased CH 4 consumption in soil.
View article
Methane emissions: choosing the right climate metric and time horizon Open
We compare and make recommendations for the use of different climate metrics and time horizons with respect to methane emissions, applying to a case study of LNG as a shipping fuel.
View article
Greenhouse Gas and Air Pollutant Emissions from Composting Open
Composting can divert organic waste from landfills, reduce landfill methane emissions, and recycle nutrients back to soils. However, the composting process is also a source of greenhouse gas and air pollutant emissions. Researchers, regula…
View article
Identification and characterization of high methane-emitting abandoned oil and gas wells Open
Significance Millions of abandoned oil and gas wells exist across the United States and around the world. Our study analyzes historical and new field datasets to quantify the number of abandoned wells in Pennsylvania, individual and cumula…
View article
Inventory of anthropogenic methane emissions in mainland China from 1980 to 2010 Open
Methane (CH4) has a 28-fold greater global warming potential than CO2 over 100 years. Atmospheric CH4 concentration has tripled since 1750. Anthropogenic CH4 emissions from China have been growing rapidly in the past decades and contribute…
View article
Methane and Nitrous Oxide Emissions Complicate Coastal Blue Carbon Assessments Open
The role of coastal wetlands as natural ‘blue carbon’ sinks may be counter‐acted by emissions of methane (CH 4 ) and nitrous oxide (N 2 O). Site‐specific fluxes of these two potent greenhouse gases from coastal wetlands show high spatial a…
View article
Greenhouse gas and ammonia emissions from digested and separated dairy manure during storage and after land application Open
Manure management at dairy production facilities, including anaerobic digestion (AD) and solid-liquid separation (SLS), has shown strong potential for the abatement of greenhouse gas (GHG) and ammonia (NH3) emissions. However, previous stu…
View article
Carbon dioxide and methane measurements from the Los Angeles Megacity Carbon Project – Part 1: calibration, urban enhancements, and uncertainty estimates Open
We report continuous surface observations of carbon dioxide (CO2) and methane (CH4) from the Los Angeles (LA) Megacity Carbon Project during 2015. We devised a calibration strategy, methods for selection of background air masses, calculati…