The global ocean-ice-model system VIKING20X - Impact of key regions in the Atlantic to global ocean changes

Acronym
VIKING20X
Name
The global ocean-ice-model system VIKING20X - Impact of key regions in the Atlantic to global ocean changes
Description
The high-res­ol­u­tion global ocean-ice-model sys­tem VIKING20X will be used for sim­u­la­tions fo­cus­ing on re­gional high-res­ol­u­tion re­fine­ments eval­u­at­ing the pre­dicted changes for the 21st cen­tury de­rived from cli­mate stud­ies (CMIP5) pro­ject­ing trends in the at­mo­spheric for­cing fields. The idea is to de­cipher the ba­sic causes (1) and re­gional ef­fects (2) of (multi-)decadal changes in the At­lantic cir­cu­la­tion sys­tem based on a col­lec­tion of nu­mer­ical model sim­u­la­tions. The sci­entific goals are:
- Con­cern­ing the ba­sic causes (1) the fo­cus is on fur­ther cla­ri­fic­a­tion of po­ten­tially im­port­ant factors of in­flu­ence for the At­lantic me­ri­di­onal over­turn­ing cir­cu­la­tion (AMOC), par­tic­u­larly:
• The relative importance and possible interaction of northern- and southern hemispheric influences on the generation of decadal variability and long-term trends.
- Con­cern­ing re­gional ef­fects (2) the ana­lysis fo­cus on the mani­fest­a­tion of nat­ural vari­ab­il­ity in the At­lantic cir­cu­la­tion sys­tems as well as pos­sible ef­fects of fu­ture an­thro­po­genic trends. Of ma­jor in­terest are:
• The manifestation of large-scale circulation changes, particularly of the AMOC, the subpolar gyre of the North Atlantic and the subtropical-tropical cells (STCs) in regional velocity fields.
• Changes in local hydrography due to changes in the circulation system as well as trends, particularly along the continental shelfs.
• Application of high-resolution model results to the interpretation of marine biological findings, particularly due to the possibility to use the time variable velocity fields to determine propagation path
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