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  The Red Sea Deep Water is a potent source of atmospheric ethane and propane

Bourtsoukidis, E., Pozzer, A., Sattler, T., Matthaios, V. N., Ernle, L., Edtbauer, A., et al. (2020). The Red Sea Deep Water is a potent source of atmospheric ethane and propane. Nature Communications, 11(1): 447. doi:10.1038/s41467-020-14375-0.

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 Creators:
Bourtsoukidis, E.1, Author              
Pozzer, A.1, Author              
Sattler, T.1, Author              
Matthaios, V. N.2, Author
Ernle, L.1, Author              
Edtbauer, A.1, Author              
Fischer, H1, Author              
Könemann, T.2, Author
Osipov, S.1, Author              
Paris, J-D2, Author
Pfannerstill, E. Y.1, Author              
Stönner, C.1, Author              
Tadic, I.1, Author              
Walter, D.1, Author              
Wang, N.1, Author              
Lelieveld, J.1, Author              
Williams, J.1, Author              
Affiliations:
1Atmospheric Chemistry, Max Planck Institute for Chemistry, Max Planck Society, ou_1826285              
2external, ou_persistent22              

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 Abstract: Non-methane hydrocarbons (NMHCs) such as ethane and propane are significant atmospheric pollutants and precursors of tropospheric ozone, while the Middle East is a global emission hotspot due to extensive oil and gas production. Here we compare in situ hydrocarbon measurements, performed around the Arabian Peninsula, with global model simulations that include current emission inventories (EDGAR) and state-of-the-art atmospheric circulation and chemistry mechanisms (EMAC model). While measurements of high mixing ratios over the Arabian Gulf are adequately simulated, strong underprediction by the model was found over the northern Red Sea. By examining the individual sources in the model and by utilizing air mass back-trajectory investigations and Positive Matrix Factorization (PMF) analysis, we deduce that Red Sea Deep Water (RSDW) is an unexpected, potent source of atmospheric NMHCs. This overlooked underwater source is comparable with total anthropogenic emissions from entire Middle Eastern countries, and significantly impacts the regional atmospheric chemistry.

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Language(s): eng - English
 Dates: 2020-01-28
 Publication Status: Published online
 Pages: -
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 Table of Contents: -
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Title: Nature Communications
  Abbreviation : Nat. Commun.
Source Genre: Journal
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Publ. Info: London : Nature Publishing Group
Pages: - Volume / Issue: 11 (1) Sequence Number: 447 Start / End Page: - Identifier: ISSN: 2041-1723
CoNE: https://pure.mpg.de/cone/journals/resource/2041-1723