Zobrazeno 1 - 10
of 133
pro vyhledávání: '"C. A. M. Brenninkmeijer"'
Publikováno v:
Atmospheric Measurement Techniques, Vol 14, Pp 1817-1831 (2021)
A gas detection system has been developed, characterized, and deployed for pressurized gas-phase sample analyses and near-real-time online measurements. It consists of a cryogenic pre-concentrator (CryoTrap), a gas chromatograph (GC), and a new high-
Externí odkaz:
https://doaj.org/article/eddd633abae646a49cf88e120ae05659
Autor:
J. C. Laube, E. C. L. Elvidge, K. E. Adcock, B. Baier, C. A. M. Brenninkmeijer, H. Chen, E. S. Droste, J.-U. Grooß, P. Heikkinen, A. J. Hind, R. Kivi, A. Lojko, S. A. Montzka, D. E. Oram, S. Randall, T. Röckmann, W. T. Sturges, C. Sweeney, M. Thomas, E. Tuffnell, F. Ploeger
Publikováno v:
Atmospheric Chemistry and Physics, Vol 20, Pp 9771-9782 (2020)
We present new observations of trace gases in the stratosphere based on a cost-effective sampling technique that can access much higher altitudes than aircraft. The further development of this method now provides detection of species with abundances
Externí odkaz:
https://doaj.org/article/838e657c9f784aabb8c5ad8a7df2526c
Autor:
P. H. Zimmermann, C. A. M. Brenninkmeijer, A. Pozzer, P. Jöckel, F. Winterstein, A. Zahn, S. Houweling, J. Lelieveld
Publikováno v:
Atmospheric Chemistry and Physics, Vol 20, Pp 5787-5809 (2020)
Methane (CH4) is an important greenhouse gas, and its atmospheric budget is determined by interacting sources and sinks in a dynamic global environment. Methane observations indicate that after almost a decade of stagnation, from 2006, a sudden and c
Externí odkaz:
https://doaj.org/article/697349a8d40a4d81b9ebbcb399e1e490
Autor:
T. J. Schuck, A.-K. Blank, E. Rittmeier, J. Williams, C. A. M. Brenninkmeijer, A. Engel, A. Zahn
Publikováno v:
Atmospheric Measurement Techniques, Vol 13, Pp 73-84 (2020)
Measurements of halogenated trace gases in ambient air frequently rely on canister sampling followed by offline laboratory analysis. This allows for a large number of compounds to be analysed under stable conditions, maximizing measurement precision.
Externí odkaz:
https://doaj.org/article/eb77aa1104574bcba2dd9c1c5abf0efb
Autor:
F. Slemr, A. Weigelt, R. Ebinghaus, J. Bieser, C. A. M. Brenninkmeijer, A. Rauthe-Schöch, M. Hermann, B. G. Martinsson, P. van Velthoven, H. Bönisch, M. Neumaier, A. Zahn, H. Ziereis
Publikováno v:
Atmospheric Chemistry and Physics, Vol 18, Pp 12329-12343 (2018)
Mercury was measured onboard the IAGOS-CARIBIC passenger aircraft from May 2005 until February 2016 during near monthly sequences of mostly four intercontinental flights from Germany to destinations in North and South America, Africa and South and
Externí odkaz:
https://doaj.org/article/966958b762ce47859d904436d63eb501
Publikováno v:
Atmospheric Chemistry and Physics, Vol 18, Pp 9831-9843 (2018)
Unexpectedly large seasonal phase differences between CH4 concentration and its 13C ∕ 12C isotopic ratio and their inter-annual variations observed in southern hemispheric time series have been attributed to the Cl + CH4 reaction, in whi
Externí odkaz:
https://doaj.org/article/52cd5205ea4e405bbda899479e651213
Autor:
K. E. Adcock, C. E. Reeves, L. J. Gooch, E. C. Leedham Elvidge, M. J. Ashfold, C. A. M. Brenninkmeijer, C. Chou, P. J. Fraser, R. L. Langenfelds, N. Mohd Hanif, S. O'Doherty, D. E. Oram, C.-F. Ou-Yang, S. M. Phang, A. A. Samah, T. Röckmann, W. T. Sturges, J. C. Laube
Publikováno v:
Atmospheric Chemistry and Physics, Vol 18, Pp 4737-4751 (2018)
Atmospheric measurements of the ozone-depleting substance CFC-113a (CCl3CF3) are reported from ground-based stations in Australia, Taiwan, Malaysia and the United Kingdom, together with aircraft-based data for the upper troposphere and lower strat
Externí odkaz:
https://doaj.org/article/9cf74f01b62a41dcbdbfe3b333f06d42
Autor:
T. Umezawa, C. A. M. Brenninkmeijer, T. Röckmann, C. van der Veen, S. C. Tyler, R. Fujita, S. Morimoto, S. Aoki, T. Sowers, J. Schmitt, M. Bock, J. Beck, H. Fischer, S. E. Michel, B. H. Vaughn, J. B. Miller, J. W. C. White, G. Brailsford, H. Schaefer, P. Sperlich, W. A. Brand, M. Rothe, T. Blunier, D. Lowry, R. E. Fisher, E. G. Nisbet, A. L. Rice, P. Bergamaschi, C. Veidt, I. Levin
Publikováno v:
Atmospheric Measurement Techniques, Vol 11, Pp 1207-1231 (2018)
We report results from a worldwide interlaboratory comparison of samples among laboratories that measure (or measured) stable carbon and hydrogen isotope ratios of atmospheric CH4 (δ13C-CH4 and δD-CH4). The offsets among the laboratories are lar
Externí odkaz:
https://doaj.org/article/8d7ca1e1efab4853a04931977e796bf9
Autor:
E. Leedham Elvidge, H. Bönisch, C. A. M. Brenninkmeijer, A. Engel, P. J. Fraser, E. Gallacher, R. Langenfelds, J. Mühle, D. E. Oram, E. A. Ray, A. R. Ridley, T. Röckmann, W. T. Sturges, R. F. Weiss, J. C. Laube
Publikováno v:
Atmospheric Chemistry and Physics, Vol 18, Pp 3369-3385 (2018)
In a changing climate, potential stratospheric circulation changes require long-term monitoring. Stratospheric trace gas measurements are often used as a proxy for stratospheric circulation changes via the mean age of air values derived from them
Externí odkaz:
https://doaj.org/article/c90a4d912c7845f7b783728e84ca2971
Autor:
D. E. Oram, M. J. Ashfold, J. C. Laube, L. J. Gooch, S. Humphrey, W. T. Sturges, E. Leedham-Elvidge, G. L. Forster, N. R. P. Harris, M. I. Mead, A. A. Samah, S. M. Phang, C.-F. Ou-Yang, N.-H. Lin, J.-L. Wang, A. K. Baker, C. A. M. Brenninkmeijer, D. Sherry
Publikováno v:
Atmospheric Chemistry and Physics, Vol 17, Pp 11929-11941 (2017)
Large and effective reductions in emissions of long-lived ozone-depleting substance (ODS) are being achieved through the Montreal Protocol, the effectiveness of which can be seen in the declining atmospheric abundances of many ODSs. An important r
Externí odkaz:
https://doaj.org/article/377d573a21724dad8e93b74976d80dfa