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  Variability of the Atlantic Meridional Overturning Circulation in the subtropical Atlantic and the design of the RAPID 26°N observing array

Smeed, D., Moat, B., Frajka-Williams, E., Rayner, D., Volkov, D., Elipot, S., Smith, R., Johns, W. (2023): Variability of the Atlantic Meridional Overturning Circulation in the subtropical Atlantic and the design of the RAPID 26°N observing array, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-3002

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Datensatz-Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5018879 Versions-Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5018879_2
Genre: Konferenzbeitrag

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Urheber

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 Urheber:
Smeed, David1, Autor
Moat, Ben1, Autor
Frajka-Williams, Eleanor1, Autor
Rayner, Darren1, Autor
Volkov, Denis1, Autor
Elipot, Shane1, Autor
Smith, Ryan1, Autor
Johns, William1, Autor
Affiliations:
1IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations, ou_5011304              

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Schlagwörter: -
 Zusammenfassung: The time series of the Atlantic Meridional Overturning Circulation (AMOC) at 26°N has been extended to December 2020 and is close to 17 years long. During the period from 2004 to 2008 the AMOC was about 2.5 Sv stronger than in the following years. Since then, there has been significant interannual variability, but the AMOC has remained relatively weak compared with the first four years of observations. The design of the array was changed in 2020 so that continuous measurements are no longer made over the mid-Atlantic Ridge and in the deep eastern basin. Instead, it is proposed to use data from quinquennial hydrographic surveys to quantify changes in these locations. Here, the extended time series is presented and the impact of the design change on the accuracy of the RAPID timeseries is examined. Other possible design changes are considered too. It is shown that, although the mid-Atlantic ridge measurements have been important in determining the mean structure of the overturning streamfunction, the impact upon the variability of the streamfunction maximum has been small. It is hoped that these changes will enable the measurement of the AMOC at 26°N to be sustained in the future.

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Sprache(n): eng - Englisch
 Datum: 2023
 Publikationsstatus: Final veröffentlicht
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: DOI: 10.57757/IUGG23-3002
 Art des Abschluß: -

Veranstaltung

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Titel: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Veranstaltungsort: Berlin
Start-/Enddatum: 2023-07-11 - 2023-07-20

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Titel: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Genre der Quelle: Konferenzband
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Potsdam : GFZ German Research Centre for Geosciences
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