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  In-situ vapor isotope measurement in the Arctic seas (summer 2018): Links to moisture origin at synoptic time scales?

Touzeau, A., Lanzky, M., de Lange, T. E., Roden, N., Granskog, M., Raffel, B., Sagen, H., Storheim, E., Chen, Y.-C., Sandven, H., Sodemann, H. (2023): In-situ vapor isotope measurement in the Arctic seas (summer 2018): Links to moisture origin at synoptic time scales?, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-1819

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Item Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5017768 Version Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5017768_2
Genre: Conference Paper

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 Creators:
Touzeau, Alexandra1, Author
Lanzky, Mika1, Author
de Lange, Tor Einar1, Author
Roden, Nick1, Author
Granskog, Mats1, Author
Raffel, Bonnie1, Author
Sagen, Hanne1, Author
Storheim, Espen1, Author
Chen, Yi-Chun1, Author
Sandven, Håkon1, Author
Sodemann, Harald1, Author
Affiliations:
1IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations, ou_5011304              

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 Abstract: Local evaporation in the Arctic is likely to increase with sea-ice retreat in the context of climate change. In parallel, the transport of moisture from the North Atlantic may also increase, especially in cases of weak polar vortex, associated to blocking over the Norwegian Sea and fast vapor transport into the Arctic. In order to evaluate the contribution of different sources to the moisture budget in the Arctic, a tool is needed to track the transport of vapor in the region. Here, we combine in-situ measurements of vapor isotope composition to analysis of back- trajectories, to reconstruct the pathway of vapor transport in different synoptic situations during two cruises North of Svalbard in 2018 and 2019. During the hot summer of 2018 in Europe, high dD values are observed in the Arctic. These high values could result from intense evaporation during the heat wave followed by quick transport into the Arctic. Indeed, back-trajectories indicate northern Europe as a dominant contributor to the moisture sampled during this period. During summer 2019, we observe wide oscillations of dD values depending on the moisture origin. An atmospheric river is sampled on the 29th of August 2019, that shows that Atlantic (southerly) air is characterized by high humidity and high dD values, opposite to Arctic (northerly) air. The secondary parameter d-excess varies in opposition to dD. This study highlights the potential of isotopes for identifying moisture sources around the Arctic.

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Language(s): eng - English
 Dates: 2023
 Publication Status: Finally published
 Pages: -
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 Rev. Type: -
 Identifiers: DOI: 10.57757/IUGG23-1819
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Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Place of Event: Berlin
Start-/End Date: 2023-07-11 - 2023-07-20

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Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Source Genre: Proceedings
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Publ. Info: Potsdam : GFZ German Research Centre for Geosciences
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