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Publikationstyp
Wissenschaftlicher Artikel
Erscheinungsjahr
2018
Discrepancy between simulated and observed ethane and propane levels explained by underestimated fossil emissions
Discrepancy between simulated and observed ethane and propane levels explained by underestimated fossil emissions
Herausgeber
Quelle
Nature geoscience
11 (2018), 1 Onlineressource (Pages 178-184)
11 (2018), 1 Onlineressource (Pages 178-184)
Schlagwörter
Finanzierungskennzeichen
standardisiertes Finanzierungskennzeichen
Verbundene Publikation
Zitation
DALSØREN, Stig B., Gunnar MYHRE, Øivind HODNEBROG und Markus WALLASCH, 2018. Discrepancy between simulated and observed ethane and propane levels explained by underestimated fossil emissions. Nature geoscience [online]. 2018. Bd. 11 (2018), 1 Onlineressource (Pages 178-184). DOI 10.60810/openumwelt-52. Verfügbar unter: https://openumwelt.de/handle/123456789/5496
Zusammenfassung englisch
Ethane and propane are the most abundant non-methane hydrocarbons in the atmosphere. However, their emissions, atmospheric distribution, and trends in their atmospheric concentrations are insufficiently understood. Atmospheric model simulations using standard community emission inventories do not reproduce available measurements in the Northern Hemisphere. Here, we show that observations of pre-industrial and present-day ethane and propane can be reproduced in simulations with a detailed atmospheric chemistry transport model, provided that natural geologic emissions are taken into account and anthropogenic fossil fuel emissions are assumed to be two to three times higher than is indicated in current inventories. Accounting for these enhanced ethane and propane emissions results in simulated surface ozone concentrations that are 5-13% higher than previously assumed in some polluted regions in Asia. The improved correspondence with observed ethane and propane in model simulations with greater emissions suggests that the level of fossil (geologic + fossil fuel) methane emissions in current inventories may need re-evaluation. Quelle: https://www.nature.com