A5040373376- Atmospheric and Environmental Gas Dynamics
- Methane Hydrates and Related Phenomena
- Hydrocarbon exploration and reservoir analysis
- Coal Properties and Utilization
- Atmospheric chemistry and aerosols
- Air Quality Monitoring and Forecasting
- Medical Imaging Techniques and Applications
- Fire effects on ecosystems
- Spectroscopy and Laser Applications
- Air Quality and Health Impacts
- Marine and fisheries research
- Reservoir Engineering and Simulation Methods
- Coral and Marine Ecosystems Studies
- Chemistry and Stereochemistry Studies
- Ocean Acidification Effects and Responses
- Carbon Dioxide Capture Technologies
- Radioactivity and Radon Measurements
- Microbial Community Ecology and Physiology
- Global Energy and Sustainability Research
- Heat Transfer and Optimization
- Oil, Gas, and Environmental Issues
- Geothermal Energy Systems and Applications
- CO2 Sequestration and Geologic Interactions
- Geology and Paleoclimatology Research
- Impact of Light on Environment and Health
Utrecht University
2018-2024
Laboratoire des Sciences du Climat et de l'Environnement
2023-2024
Centre National de la Recherche Scientifique
2024
Université de Versailles Saint-Quentin-en-Yvelines
2024
Université Paris-Saclay
2024
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2023-2024
CEA Paris-Saclay
2023-2024
Royal Netherlands Institute for Sea Research
2023
Laboratoire de Mesure du Carbone 14
2023
École Polytechnique Fédérale de Lausanne
2018
Atmospheric methane (CH4) continues to increase, but there are multiple anthropogenic source categories that can be targeted for cost-effective emissions reduction. Cities emit CH4 the atmosphere from a mixture of sources, which include, not limited to, fugitive natural gas distribution systems, wastewater treatment facilities, waste-and rainwater networks, and landfills. Therefore, target mitigation measures, it is important locate quantify local urban prioritize opportunities in large...
Abstract. Characterizing and attributing methane (CH4) emissions across varying scales are important from environmental, safety, economic perspectives essential for designing evaluating effective mitigation strategies. Mobile real-time measurements of CH4 in ambient air offer a fast method to identify quantify local urban areas. We carried out extensive campaigns measure mole fractions at the street level Utrecht, Netherlands (2018 2019), Hamburg, Germany (2018). detected 145 leak...
Despite the importance of methane for climate change mitigation, uncertainties regarding temporal and spatial variability emissions remain. Measurements CH<sub>4</sub> isotopic composition are used to partition relative contributions different emission sources. We report continuous measurements during 5 months at Lutjewad tower (north Netherlands). Time-series χ(CH<sub>4</sub>), δ<sup>13</sup>C-CH<sub>4</sub>, δD-CH<sub>4</sub> in ambient air were analysed using Keeling plot method....
This study aimed to characterize the carbon isotopic signatures (δ13C-CH4) of several methane waste sources, predominantly in UK, and during field campaigns Netherlands Turkey. CH4 plumes emitted from sources were detected mobile surveys using a cavity ring-down spectroscopy (CRDS) analyser. Air samples collected for subsequent isotope analysis by gas chromatography ratio mass spectrometry (GC-IRMS) δ13C-CH4. The determined through Keeling plot approach bivariate correlated errors intrinsic...
Abstract. Methane (CH4) emissions from human activities are a threat to the resilience of our current climate system. The stable isotopic composition methane (δ13C and δ2H) allows us distinguish between different CH4 origins. A significant part European emissions, 3.6 % in 2018, comes coal extraction Poland, Upper Silesian Coal Basin (USCB) being main hotspot. Measurements mole fraction (χ(CH4)), δ13C, δ2H ambient air were performed continuously during 6 months 2018 2019 at Krakow, east...
Abstract. In regions where there are multiple sources of methane (CH4) in close proximity, it can be difficult to apportion the CH4 measured atmosphere appropriate sources. Surat Basin, Queensland, Australia, coal seam gas (CSG) developments surrounded by cattle feedlots, grazing cattle, piggeries, mines, urban centres and natural CH4. The characterization carbon (δ13C) hydrogen (δD) stable isotopic composition help distinguish between specific emitters However, Australia is a paucity data...
Abstract. Recent climate change mitigation strategies rely on the reduction of methane (CH4) emissions. Carbon and hydrogen isotope ratio (δ13CCH4 δ2HCH4) measurements can be used to distinguish sources thus understand CH4 budget better. The emission estimates by models are sensitive isotopic signatures assigned each source category, so it is important provide representative different worldwide. We present new various, mainly anthropogenic, in Europe, which represent a substantial...
Abstract. Coal mining accounts for ∼12 % of the total anthropogenic methane (CH4) emissions worldwide. The Upper Silesian Basin (USCB), Poland, where large quantities CH4 are emitted to atmosphere via ventilation shafts underground hard coal (anthracite) mines, is one hot spots in Europe. However, bed into poorly characterized. As part carbon dioxide and mission 1.0 (CoMet 1.0) that took place May–June 2018, we flew a recently developed active AirCore system aboard an unmanned aerial vehicle...
Methane (CH4), the second-largest contributor to global warming, necessitates a detailed examination of its sources and sinks understand recent rise in atmospheric CH4 mole fractions. Atmospheric isotopic signals, especially &#948;&#185;&#179;C-CH4, offer critical insights for disentangling sectoral contributions addressing these uncertainties.This study focuses on enhancing our understanding by incorporating updated &#948;&#185;&#179;C-CH4 source signature datasets...
Reducing methane (CH4) emissions offers the opportunity to slow down global temperature rise in near term. More than 10 % of anthropogenic CH4 is emitted by degradation solid waste, when accumulated open dumps or managed landfills. Methane production at waste sites depends upon various parameters, influenced composition and amounts, landfill operation, as well climate meteorological variables. Therefore, are spatially temporally heterogeneous, which challenges mitigation efforts.&#160;...
Tracer Correlation Method (TCM) testing was conducted at a U.S. landfill to quantify fugitive methane emissions, with flux values ranging from 1,353 4,996 kg/hr. SEM2Flux, another ground-based method, reported lower fluxes 430 1,177 kg/hr standard deviations of 24 164 in the same landfill. The estimates SEM2Flux may be due limited number data points, inadequate coverage waste footprint, or emissions originating gas collection infrastructure above ground rather than directly surface.Satellite...
UNEP's International Methane Emissions Observatory (IMEO) launched the Alert and Response System (MARS) in 2023 to provide open, reliable, actionable data those individuals with agency act on them ultimately reduce methane emissions. MARS uses satellite observations detect monitor large emissions then notifies governments companies worldwide. With development of MARS, IMEO opened a new level transparency that reveals dozens around world every week. Thanks synergistic use more than dozen...
Abstract. Coal mining accounts for ~ 12 % of the total anthropogenic methane emissions worldwide. The Upper Silesian Basin, Poland, where large quantities CH4 are emitted to atmosphere via ventilation shafts underground hard coal (anthracite) mines, is one hot spots in Europe. However, coalbed into poorly characterized. As part Carbon Dioxide and mission 1.0 (CoMet 1.0) that took place May – June 2018, we flew a recently developed active AirCore system aboard an unmanned aerial vehicle (UAV)...
Coral reefs are degrading from the effects of anthropogenic activities including climate change. Under this stress, their ability to survive depends upon existing phenotypic plasticity, but also transgenerational adaptation. Parental ubiquitous in nature, yet empirical studies these corals scarce, particularly context This study exposed mature colonies common reef building coral Stylophora pistillata Gulf Aqaba seawater conditions likely occur just beyond end century during peak planulae...
Methane (CH4) emissions to the atmosphere from oil and gas sector in Romania remain highly uncertain despite their relevance for European Union’s goals reduce greenhouse emissions. Measurements of CH4 isotopic composition can be used source attribution, which is important top-down studies extended areas. We performed isotope measurements atmospheric air samples collected an aircraft (24 locations) ground vehicles (83 locations), around production sites Romania, with focus on Romanian Plain....
Abstract. Ambitious methane (CH4) emission mitigation represents one of the most effective opportunities to slow rate global warming over next decades. The oil and gas (O&amp;G) sector is a significant source emissions, with technically feasible cost-effective options. Romania, key O&amp;G producer within EU, second highest reported annual CH4 emissions from energy in year 2020 (Greenhouse Gas Inventory Data - Comparison by Category, 2022), can play an important role towards EU's...
Abstract. Anthropogenic emissions are the primary source of increase in atmospheric methane (CH4) levels. However, estimates anthropogenic CH4 still show large uncertainties at global and regional scales. Differences isotopic signatures δ13C δ2H can help to constrain different contributions (e.g., fossil, waste, agriculture). The Upper Silesian Coal Basin (USCB) represents one largest European emission regions, with more than 500 Gg yr−1 released from 50 coal mine ventilation shafts,...
Abstract The ocean’s methane emission to the atmosphere is dominated by continental shelves where cold seeps are globally common features. Seeps emit into hydrosphere, but temporal variations and controls of seep activity efficiency microbial filter in water column scarce. Here we address these knowledge gaps measuring whole inventories methanotrophic at a resolution 2 hours North Sea (Doggerbank) summer autumn. We found that bottom were 68% (summer) 11% (autumn) higher during low tide...
&lt;p&gt;One of the case study sites for Climate and Clean Air Coalition (CCAC) Methane Science Studies is coal seam gas (CSG) field in Surat Basin, Queensland, Australia, where there are over 6000 CSG wells associated water processing infrastructure. Previous bottom-up estimates suggest that major source methane region cattle, not (Katestone, 2018, Luhar et al. 2018).&lt;/p&gt;&lt;p&gt;In September an airborne measurement campaign was undertaken to provide a top-down...
Abstract. Recent climate change mitigation strategies rely on the reduction of methane (CH4) emissions. δ13CCH4 and δ2HCH4 measurements can be used to distinguish sources thus understand CH4 budget better. The emission estimates by models are sensitive isotopic signatures assigned each source category, so it is important provide representative different worldwide. We present new isotope various, mainly anthropogenic, in Europe, which represent a substantial contribution global dataset from...
Abstract. In-flight measurements of atmospheric methane (CH4(a)) and mass balance flux quantification studies can assist with verification improvement in the UNFCCC National Inventory reported CH4 emissions. In Surat Basin gas fields, Queensland, Australia, coal seam (CSG) production cattle farming are two major sources emissions into atmosphere. Because rapid mixing adjacent plumes within convective boundary layer, spatially attributing CH4(a) mole fraction readings to one or more emission...
Abstract. In regions where there are multiple sources of methane (CH4) in close proximity, it can be difficult to apportion the CH4 measured atmosphere appropriate sources. Surat Basin, Queensland, Australia, coal seam gas (CSG) developments surrounded by cattle feedlots, grazing cattle, piggeries, mines, urban centres and natural CH4. The use carbon (δ13C) hydrogen (δD) stable isotopic composition identify, distinguish between specific emissions However, Australia is a paucity data on...
Abstract. Characterizing and attributing methane (CH4) emissions across varying scales is important from environmental, safety, economic perspectives, essential for designing evaluating effective mitigation strategies. Mobile real-time measurements of CH4 in ambient air offer a fast method to identify quantify local urban areas. We carried out extensive campaigns measure mole fractions at the street level Utrecht, The Netherlands (2018 2019) Hamburg, Germany (2018). One hundred forty five...