• norsk
    • English
  • English 
    • norsk
    • English
  • Login
View Item 
  •   Home
  • Faculty of Mathematics and Natural Sciences
  • Geophysical Institute
  • Geophysical Institute
  • View Item
  •   Home
  • Faculty of Mathematics and Natural Sciences
  • Geophysical Institute
  • Geophysical Institute
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Water mass transformation and the North Atlantic Current in three multi-century climate model simulations

Langehaug, Helene Reinertsen; Rhines, Peter B.; Eldevik, Tor; Mignot, Juliette; Lohmann, Katja
Journal article
Submitted version
Thumbnail
View/Open
Submitted version (1.973Mb)
URI
https://hdl.handle.net/1956/5278
Date
2012-11
Metadata
Show full item record
Collections
  • Geophysical Institute [735]
Original version
https://doi.org/10.1029/2012jc008021
Abstract
The warm and saline Subtropical Water carried by the North Atlantic Current undergoes substantial transformation on its way to higher latitudes as heat is released from ocean to atmosphere. The geographical distribution of the surface-forced water mass transformation is assessed in multi-century climate simulations in three different climate models, with a particular focus on the eastern subpolar North Atlantic Ocean. The models of the study are BCM, IPSLCM4, and MPI-M ESM. The diagnosis, originally introduced byWalin (1982), estimates the transformation in water mass outcrop areas from heat and freshwater fluxes. The integrated heat flux in the eastern subpolar region has a larger contribution than the freshwater flux to the water mass transformation in all three models. While the pattern of the Atlantic Meridional Overturning Ciculation (AMOC) is similar in all models, the fluxes are very different. The different pathways of the North Atlantic Current, and upper ocean low salinity water, as well as sea ice cover have strong influence on the water mass transformation. The water mass transformation in the eastern subpolar region shows pronounced variability on decadal time scale in all models, and is found to reflect the variability in the overturning circulation in two of the models with a time lag of 7-8 years.
Publisher
American Geophysical Union
Journal
Journal of Geophysical Research: Oceans
Copyright
Copyright American Geophysical Union. All rights reserved

Contact Us | Send Feedback

Privacy policy
DSpace software copyright © 2002-2019  DuraSpace

Service from  Unit
 

 

Browse

ArchiveCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsDocument TypesJournalsThis CollectionBy Issue DateAuthorsTitlesSubjectsDocument TypesJournals

My Account

Login

Statistics

View Usage Statistics

Contact Us | Send Feedback

Privacy policy
DSpace software copyright © 2002-2019  DuraSpace

Service from  Unit