BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:Arctic Freshwater Storage and Export in CMIP6 Models - Hannah Zano
 wski\, University of Colorador Boulder
DTSTART:20200909T140000Z
DTEND:20200909T150000Z
UID:TALK150715@talks.cam.ac.uk
CONTACT:Dr Irena Vankova
DESCRIPTION:Recently\, the Arctic has undergone substantial changes in sea
  ice cover and the hydrologic cycle\, both of which strongly impact the fr
 eshwater storage in\, and export from\, the Arctic Ocean. The fate of Arct
 ic Ocean freshwater (FW) is of global relevance\, as it can impact North A
 tlantic Deep Water formation and potentially the strength of the Meridiona
 l Overturning Circulation. Here we analyze Arctic FW storage and export in
  7 climate models from the Coupled Model Intercomparison Project phase 6 (
 CMIP6) and assess their agreement over the historical period (1980-2000) a
 nd in two future emissions scenarios\, SSP1-2.6 and SSP5-8.5. Rather than 
 focusing on a single realization of each experiment\, ensembles from each 
 model are used in order to understand model internal variability and to be
 tter constrain inter-model differences.\n\nIn both future scenarios the mo
 dels show an increase in liquid (ocean) freshwater storage that is partial
 ly due to a reduction in solid (ice) storage through sea ice melt. This re
 duction in sea ice coverage also leads to a reduction in solid fluxes thro
 ugh the five major Arctic gateways (Bering Strait\, Fram Strait\, Nares St
 rait\, Barrow Strait\, and the Barents Sea Opening) that is typically larg
 er for SSP5-8.5 than SSP1-2.6. The liquid fluxes through the gateways exhi
 bit a more complex pattern\, with some models showing a change in sign of 
 the freshwater flux through the Barents Sea Opening\, for example. To iden
 tify the mechanisms responsible for such changes\, the ocean fluxes are de
 composed into their salinity and volume contributions. Although the models
  broadly agree on the sign of the storage and flux changes\, substantial d
 ifferences exist between the magnitude of these changes and the models’ 
 underlying mean states.
LOCATION:British Antarctic Survey\, Zoom
END:VEVENT
END:VCALENDAR