Deutsch
 
Datenschutzhinweis Impressum
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT
  Sensitivities of the Energetics of the West Greenland Current to Greenland Ice Sheet Meltwater in Mesoscale Ocean/Sea-ice Simulations

Morrison, T., McClean, J., Gille, S., Maltrud, M., Ivanova, D. (2023): Sensitivities of the Energetics of the West Greenland Current to Greenland Ice Sheet Meltwater in Mesoscale Ocean/Sea-ice Simulations, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-4435

Item is

Externe Referenzen

einblenden:

Urheber

einblenden:
ausblenden:
 Urheber:
Morrison, Theresa1, Autor
McClean, Julie1, Autor
Gille, Sarah1, Autor
Maltrud, Mathew1, Autor
Ivanova, Detelina1, Autor
Affiliations:
1IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations, ou_5011304              

Inhalt

einblenden:
ausblenden:
Schlagwörter: -
 Zusammenfassung: Meltwater from the Greenland Ice Sheet has the potential to freshen the surface of the Labrador Sea and limit deep convection. Typically, meltwater is added to ocean models at the surface, neglecting the observed mixing of meltwater within fjords. We investigate how a more realistic representation of meltwater amplifies the transport of freshwater across the southwest Greenland shelf break. Results from four coupled ocean/sea-ice simulations forced with atmospheric reanalysis are compared for the years 1992-1993. We compare eddy permitting and mesoscale eddy resolving (horizontal resolutions of approx. 5km and 3km in the study region, respectively) simulations with no meltwater to examine the importance of mesoscale processes in off shelf transport. Two different meltwater forcing schemes are implemented in the mesoscale eddy resolving configuration: meltwater added to the surface layer and meltwater vertically distributed over the upper 200m. When meltwater is added, there is an increase in off shelf freshwater transport (S<u>ref</u>=34.7) compared to the no-meltwater case (total transport of 45.2 ~mSv). Transport off the shelf increases by 12mSv in the surface meltwater case and by 23.1mSv in the vertically distributed meltwater case. In the mesoscale eddy resolving simulations, when meltwater is vertically distributed, there is enhanced baroclinic conversion at the shelf break compared to the simulation with no meltwater. This suggests that meltwater from the Greenland Ice Sheet could have a disproportionate impact on freshwater transport into the Labrador Sea by modifying cross shelf exchange.

Details

einblenden:
ausblenden:
Sprache(n): eng - Englisch
 Datum: 2023-07-112023-07-11
 Publikationsstatus: Final veröffentlicht
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: DOI: 10.57757/IUGG23-4435
 Art des Abschluß: -

Veranstaltung

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

Entscheidung

einblenden:

Projektinformation

einblenden:

Quelle 1

einblenden:
ausblenden:
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
Seiten: - Band / Heft: - Artikelnummer: - Start- / Endseite: - Identifikator: -