CONFERENCES PARTICIPATION

Session convener

Defratyka S., Arnold T., Yver-Kwok C., Lowry D., Schmidt  M., Isotopes and other tracers for studies of methane sources and sinks. ICOS Science Conference 2024

Invited talk

Defratyka S., Development of automated preconcentrator to measure clumped isotopologues of methane (Δ13CH3D and Δ12CH2D2) from the atmosphere and sources. IsoNetECR, 2024

Oral

Defratyka S., Chung E., Fernandez J.M., Arnold T., A review of clumped isotope source signatures to improve global atmospheric methane budget estimates., AGU 2024

Rennick C., Defratyka S., Safi E., Yeo C., Wilson F., Hopkinson E., Pearce R., Clog M., Houston A., Arnold T., Development and Application of New Systems for Isotopologue Measurements In Atmospheric Methane For Emissions Attribution. AGU 2024

Defratyka, S.M., Rennick, C., Wilson F., Clog M., Houston A., Arnold T., Development and verification of preconcentrator to measure clumped isotopologues (Δ13CH3D and Δ12CH2D2) of methane from the atmosphere and sources. EGU, 2024.

Defratyka, S.M., Rennick, C., Arnold T., Development of measurement strategy to measure methane multiply substituted isotopologue ratios (Δ13CH3D and Δ12CH2D2) of ambient air within POLYGRAM project. Goldschmidt, 2023.

Defratyka, S.M., France, J.L., Fisher, R.E., Lowry, D., Fernandez, J.M., Bakkaloglu, S., Yver-Kwok, C., Paris, J.D., Bousquet, P., Arnold, T., Rennick, C., Helmore, J., Morales, R., Brunner, D., Nisbet, E.G. Verification of method used to determine δ13CH4 during mobile vehicle-based methane measurements. JESIUM, 2022.

Defratyka, S.M., France, J.L., Fisher, R.E., Lowry, D., Fernandez, J.M., Bakkaloglu, S., Yver-Kwok, C., Paris, J.D., Bousquet, P., Weller, Z., Fischer, J., Luetschwager, E., Arnold, T., Rennick, C., Helmore, J., Morales, R., Brunner, D., Nisbet, E.G. Controlled release experiment to verify mobile vehicle-based measurements of methane, ethane and δ13C-CH4. ICOS conference, 2022.

Defratyka, S., Yver-Kwok, C., Paris, J-D. and Bousquet, P. Mobile measurement of methane in Ile de France region – source mapping, isotopic composition & emission estimation. NCGG8, 2019.

Posters

Defratyka, S., Yver-Kwok, C., Paris, J-D., Lozano M., Broquet, G., Kumar, P., Menoud, M., Röckmann, T., and Bousquet, P. Characterization of natural gas compressor stations in the Ile-de-France region: CH4 emissions rate, C2H6:CH4 ratio, and isotopic signatures (δ13CH4). ICOS conference 2020.

Defratyka, S., Yver-Kwok, C., Paris, J-D. and Bousquet, P. Methane source mapping in Paris urban area from mobile measurement of mole fraction and isotopic composition. EGU 2019

Defratyka, S., Yver-Kwok, C., Hensen, A., Nęcki, J., Lowry, D., Paris, J-D. and Bousquet, P. Mobile measurement of CH4 in urban environments. ICOS conference, Prague 2018

Outreach

Summer School

DARE-UK International Summer School 2022 – Giving the short course titled “HYSPLIT – a tool to model trajectories and dispersions”

Open Day

NPL Open Day 2022 – During the event I was involved in presenting our group work, focused on methane measurements and modelling.

NPL Open Day 2025 – National Physical Laboratory opens its day to the public to celebrate 125 anniversary. During the even I was coordinating presentation of our Greenhouse Gas Metrology group, focused on measurements of greenhouse gases in the atmosphere (using tall towers), inverse modelling and our development for automated measurements of methane isotopes.

Lab tours

As a lab owner, I am responsible not for health and safety during lab operation. I regular present our work and latest achievement to varying visitors.