Batenburg bbos2011

218 views

Published on

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.

Published in: Technology, Business
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
218
On SlideShare
0
From Embeds
0
Number of Embeds
4
Actions
Shares
0
Downloads
2
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide
  • - 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?
  • Batenburg bbos2011

    1. 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. 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. 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. 4. The atmospheric H 2 budget
    5. 5. Effects of a Hydrogen Economy
    6. 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. 7. Isotopic source signatures Isotopes can be used to gain information about different sources and sinks.
    8. 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. 9. The EUROHYDROS network Batenburg et al., 2011 http://www.atmos-chem-phys.net/11/6985/2011/acp-11-6985-2011.html
    10. 10. EUROHYDROS data
    11. 11. EUROHYDROS data
    12. 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. 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. 14. Stratospheric input Pieterse et al., 2011 http://www.atmos-chem-phys.net/11/7001/2011/acp-11-7001-2011.html
    15. 15. CARIBIC measurement container Mass 1.5 ton Deployment monthly Air inlet system Permanent part Airbus A 340-600 D-AIHE Cargo door
    16. 16. Sampling locations
    17. 17. Example: Caracas flights
    18. 18. Stratospheric samples δ D(H 2 ) `mirrors’ methane
    19. 19. Stratospheric correlations
    20. 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. 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>

    ×