WP1: Developing a harmonised in situ CH4 isotope dataset of ambient air in Europe
The aim of this work package is to develop a harmonised in situ CH4 isotope dataset of ambient air in Europe to resolve compatibility issues of measurements of δ13C or δ2H in CH4 across multiple laboratories. This harmonisation will include a) improved methodologies and procedures to improve the comparability between independent OIRS based in situ analyses of ambient air CH4 for δ13C and δ2H and the traceability to the VPDB and VSMOW scales and b) improved validation of IRMS and OIRS methodologies across Europe through interlaboratory comparisons.
WP2: A sustainable metrological infrastructure for a dataset for CH4 isotope source signature measurements in Europe
The aim of this work package is first to develop a sustainable metrological infrastructure for a dataset for δ13C(CH4) and δ2H(CH4)-source measurements in Europe, and second, to evaluate the potential for source apportionment of rare doubly-substituted 13CH3D and 12CH2D2 isotopologues analysis in selected campaigns.
WP3: Atmospheric transport modelling to direct the measurement strategy for optimal emissions estimation and demonstration of emissions estimates from new datasets
This work package aims to use atmospheric chemistry transport modelling to inform WP1 and WP2, creating estimates of the minimum measurement requirements for deployed instruments. The full dataset of measurements across Europe from WP1 and WP2 will be used in atmospheric transport models and inverse statistical methods, to enable a first demonstration of estimates of emissions from the new datasets.
WP4: Creating impact
The aim of this work package is to ensure that the research outputs are communicated to the end-users and stakeholders, maximising the impact and uptake. Activities in this work package will also engage with stakeholders to ensure that the direction of this project will meet their needs.
WP5: Management and coordination
The project will be managed by the coordinator from PTB, who will be supported by the project management board (PMB) consisting of the coordinator and the work package leaders.
The members of the PMB will guide the project, attend the project meetings, organise the progress meetings and call additional meetings if needed to ensure the overall project’s success.