Batenburg bbos2011
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Presentation given at Buys Ballot OnderzoeksSchool Autumn Symposium, Oranjewoud (Friesland, the Netherlands) October 2011. This material is now published as a discussion paper on http://www.atmos-chem-phys-discuss.net/12/589/2012/acpd-12-589-2012.html.
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Presentation given at CARIBIC workshop at Lufthansa Training & Conference Center Seeheim (Germany), October 2011.
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This material is now online as a discussion paper in ACPD, that can be found on http://www.atmos-chem-phys-discuss.net/12/589/2012/acpd-12-589-2012.html
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- 1. “ The stable isotopic composition of atmospheric H 2 ; at the ground and in the lowermost stratosphere (LMS) ” by Anneke M. Batenburg et al. is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. Please include a proper attribution when using this work. The material that was presented in this presentation was later published in a discussion paper in ACPD, that can be found on: http:// www.atmos-chem-phys-discuss.net /12/589/2012/acpd-12-589-2012.html
- 2. The stable isotopic composition of atmospheric H 2 ; at the ground and in the lowermost stratosphere (LMS) A.M. Batenburg and T.J. Schuck, A.K. Baker, A. Zahn, C.A.M. Brenninkmeijer of the CARIBIC project and S. Walter, G. Pieterse, T. R öckmann of IMAU
- 4. The atmospheric H 2 budget
- 5. Effects of a Hydrogen Economy
- 6. Isotope δ -notation The δ (D,H 2 ) value represents the deuterium-to-hydrogen ratio in the H 2 relative to a standard (Vienna Standard Mean Ocean Water (VSMOW))
- 7. Isotopic source signatures Isotopes can be used to gain information about different sources and sinks.
- 9. The EUROHYDROS network Batenburg et al., 2011 http://www.atmos-chem-phys.net/11/6985/2011/acp-11-6985-2011.html
- 10. EUROHYDROS data
- 11. EUROHYDROS data
- 13. Stratospheric H 2 cycle CH 4 H 2 H 2 O Source: Hydrocarbon oxidation Enriched in D Sink: Oxidation by OH Preferentially removes H Result of stratospheric processing: H 2 mixing ratio changes little, while δ D increases dramatically.
- 14. Stratospheric input Pieterse et al., 2011 http://www.atmos-chem-phys.net/11/7001/2011/acp-11-7001-2011.html
- 15. CARIBIC measurement container Mass 1.5 ton Deployment monthly Air inlet system Permanent part Airbus A 340-600 D-AIHE Cargo door
- 18. Stratospheric samples δ D(H 2 ) `mirrors’ methane
Editor's Notes
- - Linked to methane cycle - Large uncertainties exist in the global H 2 budget - Expected `Hydrogen economy ’ Expected leakage assumptions from Tromp: All current technologies based on oil or gasoline combustion replaced by H2 fuel cells 10 to 20% leakage
- Adapt tp Pieterse values BB signature is likely more depleted. Hydrogen has large isotope effects (large relative mass difference) -> Isotopic analysis is a useful tool to constrain sources and sinks
- Maybe remove/correct title. Add coords?