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| Titel |
A modelling study of the present day budget of atmospheric H2 and HD and the environmental controls on its soil sink. |
| VerfasserIn |
N. Warwick, J. Pyle |
| Konferenz |
EGU General Assembly 2009
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 11 (2009) |
| Datensatznummer |
250029079
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| Zusammenfassung |
| A future global hydrogen-based economy is a possibility as oil reserves run out. However, the
present day hydrogen budget is not well understood. We need to understand H2 in the air
today before the impact of future H2 emissions can be accurately estimated in a
hydrogen-based energy industry. In this study, detailed model studies are performed to better
understand the present day H2 budget. Emission datasets are compiled for both anthropogenic
and natural sources of atmospheric H2. These are included in 3D global model simulations of
both H2 and HD. Model simulations compare well to atmospheric observations, accurately
reproducing both the latitudinal gradient and seasonal cycles. They demonstrate the
importance of soil uptake in controlling H2 levels and distribution, and further indicate how
changes in temperature, soil moisture and snow cover influence soil uptake on a global scale. |
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