Semra Bakkaloglu
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View article: Practical paths towards quantifying and mitigating agricultural methane emissions
Practical paths towards quantifying and mitigating agricultural methane emissions Open
This review summarizes the rapid advances in direct practical methods to quantify and reduce agricultural methane emissions worldwide. Major tasks are location, identification, quantification and distinction between different specific sour…
View article: Evaluation of Data Processing Strategies for Methane Isotopic Signatures Determined During Near-Source Measurements
Evaluation of Data Processing Strategies for Methane Isotopic Signatures Determined During Near-Source Measurements Open
Mobile, near-source measurements are broadly used for determining δ13CH4 of individual methane (CH4) emissions sources. To answer the need for robust and comparable measurement methods, we aim to define the best practices to determine isot…
View article: The role of negative emissions technologies in the UK’s net-zero strategy
The role of negative emissions technologies in the UK’s net-zero strategy Open
Summary: The role of negative emissions technologies (NETs) in climate change mitigation remains contentious. Although numerous studies indicate significant carbon dioxide removal (CDR) requirements for Paris Agreement mitigation goals to …
View article: Carbon isotope measurements of methane for UK sources: spatial and temporal changes and implications for inventories and model inputs
Carbon isotope measurements of methane for UK sources: spatial and temporal changes and implications for inventories and model inputs Open
The carbon isotopic signature (ð13C) of CH4 fugitive emissions to atmosphere has been measured in downwind plumes from nearly 400 sources in the United Kingdom by the RHUL group since first measurements of the natural gas supply in 19…
View article: Ground-Based Mobile Measurements to Track Urban Methane Emissions from Natural Gas in 12 Cities across Eight Countries
Ground-Based Mobile Measurements to Track Urban Methane Emissions from Natural Gas in 12 Cities across Eight Countries Open
To mitigate methane emission from urban natural gas distribution systems, it is crucial to understand local leak rates and occurrence rates. To explore urban methane emissions in cities outside the U.S., where significant emissions were fo…
View article: A comparative study of biogas and biomethane with natural gas and hydrogen alternatives
A comparative study of biogas and biomethane with natural gas and hydrogen alternatives Open
Biogas and biomethane are renewable fuels that can help to reduce greenhouse gas (GHG) emissions. The upstream, midstream (gas production), and downstream segments of the biogas and biomethane supply chain are shown in the upper figure, al…
View article: Comment on egusphere-2023-1490
Comment on egusphere-2023-1490 Open
Abstract. Stable carbon isotopic signatures of methane emissions are broadly used for methane source identification, apportionment, and global-scale modelling of methane sources and sinks. Thus, accurate and precise isotop…
View article: Statistical evaluation of methane isotopic signatures determined during near-source measurements
Statistical evaluation of methane isotopic signatures determined during near-source measurements Open
Stable carbon isotopic signatures of methane emissions are broadly used for methane source identification, apportionment, and global-scale modelling of methane sources and sinks. Thus, accurate and precise isotopic measurements of methane …
View article: How Far Should the UK Go with Negative Emission Technologies?
How Far Should the UK Go with Negative Emission Technologies? Open
Negative Emissions Technologies (NETs), such as Bioenergy with Carbon Capture and Storage (BECCS) and Direct Air Carbon Capture and Storage (DACCS), are potentially valuable to offset carbon emissions and therefore commonly deployed in glo…
View article: New contributions of measurements in Europe to the global inventory of the stable isotopic composition of methane
New contributions of measurements in Europe to the global inventory of the stable isotopic composition of methane Open
Recent climate change mitigation strategies rely on the reduction of methane (CH4) emissions. Carbon and hydrogen isotope ratio (δ13CCH4 and δ2HCH4) measurements can be used to distinguish sources and thus to understand the CH4 budget bett…
View article: Life cycle environmental impact assessment of methane emissions from the biowaste management strategy of the United Kingdom: Towards net zero emissions
Life cycle environmental impact assessment of methane emissions from the biowaste management strategy of the United Kingdom: Towards net zero emissions Open
Waste-related methane (CH4) emissions could account for 31% of total UK CH4 emissions. Waste management strategies in the UK have recently changed as more waste is diverted from landfills to anaerobic digesters (AD) and composting faciliti…
View article: Methane emissions along biomethane and biogas supply chains are underestimated
Methane emissions along biomethane and biogas supply chains are underestimated Open
Although natural gas generates lower CO2 emissions, gas extraction, processing, and distribution all release methane, which has a greater global warming potential than CO2. Biomethane and biogas that use organic wastes as a feedstock have …
View article: Comment on essd-2022-30
Comment on essd-2022-30 Open
Recent climate change mitigation strategies rely on the reduction of methane (CH4) emissions. δ13CCH4 and δ2HCH4 measurements can be used to distinguish sources and thus to understand the CH4 budget better. The CH4 emission estimates by mo…
View article: Hydrogen emissions from the hydrogen value chain-emissions profile and impact to global warming
Hydrogen emissions from the hydrogen value chain-emissions profile and impact to global warming Open
View article: Stable isotopic signatures of methane from waste sources through atmospheric measurements
Stable isotopic signatures of methane from waste sources through atmospheric measurements Open
This study aimed to characterize the carbon isotopic signatures (δ13C-CH4) of several methane waste sources, predominantly in the UK, and during field campaigns in the Netherlands and Turkey. CH4 plumes emitted from waste sources were dete…
View article: Global inventory of the stable isotopic composition of methane surface emissions, augmented by new measurements in Europe
Global inventory of the stable isotopic composition of methane surface emissions, augmented by new measurements in Europe Open
Recent climate change mitigation strategies rely on the reduction of methane (CH4) emissions. δ13CCH4 and δ2HCH4 measurements can be used to distinguish sources and thus to understand the CH4 budget better. The CH4 emission estimates by mo…
View article: mamenoud/European_Methane_Isotope_Database
mamenoud/European_Methane_Isotope_Database Open
Stable isotope (13C and 2H) data of methane (CH4) emission sources. European Methane Isotope Database, based on measurements carried out during the MEMO2 project (https://h2020-memo2.eu) Methane Isotopic signatures from previous literature…
View article: mamenoud/European_Methane_Isotope_Database
mamenoud/European_Methane_Isotope_Database Open
Stable isotope (13C and 2H) data of methane (CH4) emission sources. European Methane Isotope Database, based on measurements carried out during the MEMO2 project (https://h2020-memo2.eu) Methane Isotopic signatures from previous literature…
View article: Carbon isotopic characterisation and oxidation of UK landfill methane emissions by atmospheric measurements
Carbon isotopic characterisation and oxidation of UK landfill methane emissions by atmospheric measurements Open
Biological oxidation of methane in landfill cover material can be calculated from the carbon isotopic signature (δ13CCH4) of emitted CH4. Enhanced microbial consumption of methane in the aerobic portion of …
View article: UK landfill methane emissions: Use of mobile plume measurements and carbon isotopic characterisation to reassess oxidation rates for open and closed sites 
UK landfill methane emissions: Use of mobile plume measurements and carbon isotopic characterisation to reassess oxidation rates for open and closed sites  Open
<p>Biological methane oxidation in landfill cover material can be characterised using stable isotopes. Methane oxidation fraction is calculated from the carbon isotopic signature of emitted CH<sub>4</sub>, with enhanced m…
View article: Quantification of methane emissions from UK biogas plants
Quantification of methane emissions from UK biogas plants Open
View article: Hydrogen Emissions from the Hydrogen Value Chain- Emissions Profile and Impact to Global Warming
Hydrogen Emissions from the Hydrogen Value Chain- Emissions Profile and Impact to Global Warming Open
View article: mamenoud/MEMO2_isotopes: v8.1 complete
mamenoud/MEMO2_isotopes: v8.1 complete Open
v8 of the dataset. Corresponds to submitted version of D2.2 report.
View article: Characterization and Quantification of Methane Emissions from Waste in the UK
Characterization and Quantification of Methane Emissions from Waste in the UK Open
<p>Mitigation of climate change is a key scientific and societal challenge. CH<sub>4</sub> emissions are a major contributor to global warming impact and these are not well quantified yet. There are significant discrepanc…
View article: Methane Mitigation: Methods to Reduce Emissions, on the Path to the Paris Agreement
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…