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Batenburg bbos2011
Batenburg bbos2011
Batenburg bbos2011
Batenburg bbos2011
Batenburg bbos2011
Batenburg bbos2011
Batenburg bbos2011
Batenburg bbos2011
Batenburg bbos2011
Batenburg bbos2011
Batenburg bbos2011
Batenburg bbos2011
Batenburg bbos2011
Batenburg bbos2011
Batenburg bbos2011
Batenburg bbos2011
Batenburg bbos2011
Batenburg bbos2011
Batenburg bbos2011
Batenburg bbos2011
Batenburg bbos2011
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Batenburg bbos2011

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Presentation given at Buys Ballot OnderzoeksSchool Autumn Symposium, Oranjewoud (Friesland, the Netherlands) October 2011. …

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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  • - 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?
  • Transcript

    • 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
    • 3. Presentation overview <ul><li>Introduction </li></ul><ul><ul><li>* Hydrogen (H 2 ) </li></ul></ul><ul><ul><li>* H 2 isotopic composition ( δ D) </li></ul></ul><ul><li>Results </li></ul><ul><ul><li>* Ground stations </li></ul></ul><ul><li>* Lowermost stratosphere (LMS) </li></ul><ul><li>Summary </li></ul>
    • 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.
    • 8. Presentation overview <ul><li>Introduction </li></ul><ul><ul><li>* Hydrogen (H 2 ) </li></ul></ul><ul><ul><li>* H 2 isotopic com position ( δ D) </li></ul></ul><ul><li>Results </li></ul><ul><ul><li>* Ground stations </li></ul></ul><ul><li>* Lowermost stratosphere (LMS) </li></ul><ul><li>Summary </li></ul>
    • 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
    • 12. Presentation overview <ul><li>Introduction </li></ul><ul><ul><li>* Hydrogen (H 2 ) </li></ul></ul><ul><ul><li>* H 2 isotopic composition ( δ D) </li></ul></ul><ul><li>Results </li></ul><ul><ul><li>* Ground stations </li></ul></ul><ul><li>* Lowermost stratosphere (LMS) </li></ul><ul><li>Summary </li></ul>
    • 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
    • 16. Sampling locations
    • 17. Example: Caracas flights
    • 18. Stratospheric samples δ D(H 2 ) `mirrors’ methane
    • 19. Stratospheric correlations
    • 20. Presentation overview <ul><li>Introduction </li></ul><ul><ul><li>* Hydrogen (H 2 ) </li></ul></ul><ul><ul><li>* H 2 isotopic composition ( δ D) </li></ul></ul><ul><li>Results </li></ul><ul><ul><li>* Ground stations </li></ul></ul><ul><li>* Lowermost stratosphere (LMS) </li></ul><ul><li>Summary </li></ul>
    • 21. Summary <ul><li>We’ve collected δD data from the ground and around the tropopause </li></ul><ul><li>Ground: </li></ul><ul><li>Information obtained on seasonal cycles and latitudinal variation </li></ul><ul><li>LMS: </li></ul><ul><li>No change in m(H 2 ) </li></ul><ul><li>δ D increases with stratospheric age </li></ul><ul><li>Tight correlations with other species that can improve models </li></ul>

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