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DESCRIPTION: \n\nStudent Seminar Series\n\nDepartment of Atmospheric & Ocea
 nic Sciences\n\npresents\n\na talk by\n\nAnne-Sophie Fortin\n	MSc student\n
 \nResponse of the Atlantic Meridional Overturning Circulation to Climate C
 hange from a suite of Climate Models\n\nOceans have absorbed most of the h
 eat energy added to the climate system by human activities\, which has dam
 ped global warming. This heat energy is redistributed into the ocean inter
 ior by the Meridional Overturning Circulation (MOC). Changes in the MOC pa
 ttern and strength are important to understand due to their large impacts 
 on regional and global climates. Here\, we aim to investigate changes in m
 agnitude and spatial distribution of the Atlantic MOC (AMOC) under climate
  change. For that purpose\, we use the CM2-O suite\, a hierarchy of three 
 climate models of varying resolution in the ocean (1°\, 0.25° and 0.10°). 
 Each model of the suite has a control and a sensitivity scenario where the
  CO2 level of 286 ppm is kept constant for the former and increased by 1% 
 per year for the latter.\n\nThe coarse and high resolution models show a s
 ignificant slowdown and shoaling of the AMOC under CO2 forcing\, while the
  AMOC of the intermediate resolution model is barely sensitive to the forc
 ing. To disentangle how much AMOC change is attributable to temperature ve
 rsus salinity\, we reconstructed the AMOC from vertical density difference
 s between deep water formation region and the Atlantic basin. This reconst
 ruction\, which captures well the upper cell of the AMOC (top 2 km) and th
 e magnitude of the weakening\, allows us to find that changes in salinity 
 drive the AMOC reduction in the coarse and high resolution models.\n\nWedn
 esday Feb 05/ 2.30 PM/ Room 934 Burnside Hall\n\n \n
DTSTART:20200205T193000Z
DTEND:20200205T203000Z
LOCATION:Room 934\, Burnside Hall\, CA\, QC\, Montreal\, H3A 0B9\, 805 rue 
 Sherbrooke Ouest
SUMMARY:Response of the Atlantic Meridional Overturning Circulation to Clim
 ate Change from a suite of Climate Models 
URL:/meteo/channels/event/response-atlantic-meridional
 -overturning-circulation-climate-change-suite-climate-models-319545
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