Validation of Boreas: an instrument for simultaneous measurement of amount fraction and stable isotope ratios in methane

Autor: Cameron Yeo, Chris Rennick, Emmal Safi, Tim Arnold

Methane (CH4) is the second most important anthropogenic greenhouse gas in terms of its impact on climate to date and its current rates of emissions. It has a wide variety of emission sources including agriculture, landfills and fossil fuel combustio

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1bd01089094a178b34a24c55eae1c676
https://doi.org/10.5194/egusphere-egu23-12043

Laboratory exploration of mineral precipitates from Europa's subsurface ocean

Autor: Emmal Safi, Benjamin Butler, Sarah J. Day, A. Evans, Hilary Kennedy, Stephen P. Thompson

Publikováno v: Journal of Applied Crystallography

Precipitation experiments from a model Europan ocean solution subjected to fast and slow freezing suggest that the highly hydrated Na–Mg sulfate phase Na2Mg(SO4)2·16H2O is one of the lowest-temperature mineral phases likely to be stable on Europa�

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::69b08443867768463fa18662d96999ba
https://doi.org/10.1107/s1600576721008554

Boreas: A Sample Preparation-Coupled Laser Spectrometer System for Simultaneous High-Precision In Situ Analysis of δ 13 C and δ2H from Ambient Air Methane

Autor: Alice Drinkwater, Tim Arnold, David R. Worton, Dave Lowry, Eric Mussell Webber, C. J. Rennick, Emmal Safi, Caroline Dylag, Francesco Bausi, Ruth E. Hill-Pearce

Publikováno v: Rennick, C, Arnold, T, Safi, E, Drinkwater, A, Dylag, C, Webber, E M, Hill-pearce, R, Worton, D R, Bausi, F & Lowry, D 2021, ' Boreas: A Sample Preparation-Coupled Laser Spectrometer System for Simultaneous High-Precision In Situ Analysis of δ 13 C and δ2H from Ambient Air Methane ', Analytical Chemistry . https://doi.org/10.1021/acs.analchem.1c01103

We present a new instrument, ‘Boreas’, a cryogen-free methane (CH4) preconcentration system coupled to a dual laser spectrometer for making simultaneous measurements of δ13C(CH4) and δ2H(CH4) in ambient air. Excluding isotope ratio scale uncert

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fa52381edab5ec3d89971229fce021f0
https://hdl.handle.net/20.500.11820/771bd71d-8a55-4af2-b424-5cf7d12aaced

Aeolian driven silicate comminution unlikely to be responsible for the rapid loss of martian methane

Autor: Corinne Wills, Jon Telling, Emmal Safi, Graham Purvis, Lidija Šiller, Casey M. Dixon, John Edgar

Publikováno v: Icarus. 375:114827

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::941d273583b26ad95a9b7e25dbe47753
https://doi.org/10.1016/j.icarus.2021.114827

Aeolian abrasion of rocks as a mechanism to produce methane in the Martian atmosphere

Autor: Samuel J. Payler, John Parnell, Matthew Chojnacki, Charles S. Cockell, Fred Worrall, Jemma L. Wadham, Emmal Safi, Manish R. Patel, Jon Telling, Nigel J.F. Blamey, L. Davies, Ian Boothroyd, James Realff

Publikováno v: Safi, E, Telling, J, Parnell, J, Chojnacki, M, Patel, M R, Realff, J, Blamey, N J F, Payler, S, Cockell, C S, Davies, L, Boothroyd, I M, Worrall, F & Wadham, J L 2019, ' Aeolian abrasion of rocks as a mechanism to produce methane in the Martian atmosphere ', Scientific Reports, vol. 9, no. 1, 8229 . https://doi.org/10.1038/s41598-019-44616-2
Scientific Reports, Vol 9, Iss 1, Pp 1-7 (2019)
Scientific reports, 2019, Vol.9(1), pp.8229 [Peer Reviewed Journal]
Scientific Reports

Seasonal changes in methane background levels and methane spikes have been detected in situ a metre above the Martian surface, and larger methane plumes detected via ground-based remote sensing, however their origin have not yet been adequately expla

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::48d7d434b758bef93dbd49ac386113ac