SwePub
Sök i LIBRIS databas

  Utökad sökning

onr:"swepub:oai:gup.ub.gu.se/279691"
 

Sökning: onr:"swepub:oai:gup.ub.gu.se/279691" > Southern Ocean Seas...

  • Du Plessis, Marcel (författare)

Southern Ocean Seasonal Restratification Delayed by Submesoscale Wind–Front Interactions

  • Artikel/kapitelEngelska2019

Förlag, utgivningsår, omfång ...

  • 2019

Nummerbeteckningar

  • LIBRIS-ID:oai:gup.ub.gu.se/279691
  • https://gup.ub.gu.se/publication/279691URI
  • https://doi.org/10.1175/JPO-D-18-0136.1DOI

Kompletterande språkuppgifter

  • Språk:engelska

Ingår i deldatabas

Klassifikation

  • Ämneskategori:ref swepub-contenttype
  • Ämneskategori:art swepub-publicationtype

Anmärkningar

  • Ocean stratification and the vertical extent of the mixed layer influence the rate at which the ocean and atmosphere exchange properties. This process has direct impacts for anthropogenic heat and carbon uptake in the Southern Ocean. Submesoscale instabilities that evolve over space (1–10 km) and time (from hours to days) scales directly influence mixed layer variability and are ubiquitous in the Southern Ocean. Mixed layer eddies contribute to mixed layer restratification, while down-front winds, enhanced by strong synoptic storms, can erode stratification by a cross-frontal Ekman buoyancy flux. This study investigates the role of these submesoscale processes on the subseasonal and interannual variability of the mixed layer stratification using four years of high-resolution glider data in the Southern Ocean. An increase of stratification from winter to summer occurs due to a seasonal warming of the mixed layer. However, we observe transient decreases in stratification lasting from days to weeks, which can arrest the seasonal restratification by up to two months after surface heat flux becomes positive. This leads to interannual differences in the timing of seasonal restratification by up to 36 days. Parameterizing the Ekman buoyancy flux in a one-dimensional mixed layer model reduces the magnitude of stratification compared to when the model is run using heat and freshwater fluxes alone. Importantly, the reduced stratification occurs during the spring restratification period, thereby holding important implications for mixed layer dynamics in climate models as well as physical–biological coupling in the Southern Ocean.

Ämnesord och genrebeteckningar

Biuppslag (personer, institutioner, konferenser, titlar ...)

  • Swart, Sebastiaan,1983Gothenburg University,Göteborgs universitet,Institutionen för marina vetenskaper,Department of marine sciences(Swepub:gu)xswase (författare)
  • Ansorge, Isabelle (författare)
  • Mahadevan, Amala (författare)
  • Thompson, Andrew (författare)
  • Göteborgs universitetInstitutionen för marina vetenskaper (creator_code:org_t)

Sammanhörande titlar

  • Ingår i:Journal of Physical Oceanography49:4, s. 1035-530022-3670

Internetlänk

Hitta via bibliotek

Till lärosätets databas

Sök utanför SwePub

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy