nieuwe zoekopdracht
[ meld een fout in dit record ]mandje (0): toevoegen | toon Print deze pagina

Delayed recovery of the Irminger interior from cooling in 2015 due to widespread buoyancy loss and suppressed restratification
Nelson, M.; Straneo, F.; Purkey, S.G.; de Jong, M.F. (2024). Delayed recovery of the Irminger interior from cooling in 2015 due to widespread buoyancy loss and suppressed restratification. Geophys. Res. Lett. 51(2): e2023GL106501. https://dx.doi.org/10.1029/2023gl106501
In: Geophysical Research Letters. American Geophysical Union: Washington. ISSN 0094-8276; e-ISSN 1944-8007, meer
Peer reviewed article  

Beschikbaar in  Auteurs 

Author keywords
    restratification; buoyancy; baroclinic instability

Auteurs  Top 
  • Nelson, M.
  • Straneo, F.
  • Purkey, S.G.
  • de Jong, M.F., meer

Abstract
    Watermass transformation in the Irminger Sea, a key region for the Atlantic Meridional Overturning Circulation, is influenced by atmospheric and oceanic variability. Strong wintertime atmospheric forcing in 2015 resulted in enhanced convection and the densification of the Irminger Sea. Deep convection persisted until 2018, even though winters following 2015 were mild. We show that this behavior can be attributed to an initially slow convergence of buoyancy, followed by more rapid convergence of buoyancy. This two-stage recovery, in turn, is consistent with restratification driven by baroclinic instability of the Irminger Current (IC), that flows around the basin. The initial, slow restratification resulted from the weak horizontal density gradients created by the widespread 2015 atmospheric heat loss. Faster restratification occurred once the IC recovered. This mechanism explains the delayed recovery of the Irminger Sea following a single extreme winter and has implications for the ventilation and overturning that occurs in the basin.

Alle informatie in het Integrated Marine Information System (IMIS) valt onder het VLIZ Privacy beleid Top | Auteurs 
IMIS is ontwikkeld en wordt gehost door het VLIZ, voor meer informatie contacteer .