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SUMMARY:Modulation of the North Atlantic Carbon Sink in a Warming World (Y
 ohei Takano)) - Yohei Takano - British Antarctic Survey
DTSTART:20251217T140000Z
DTEND:20251217T150000Z
UID:TALK236716@talks.cam.ac.uk
CONTACT:Katherine Turner
DESCRIPTION:The North Atlantic is one of the most effective regions of the
  global ocean for atmospheric carbon uptake and long-term carbon storage. 
 Understanding the mechanisms of carbon uptake and storage in the North Atl
 antic under a changing climate is crucial for studying the global carbon c
 ycle. In this talk\, I will present recent modelling studies investigating
  the drivers of changes in the North Atlantic carbon sink\, conducted as p
 art of the C-Streams project (https://c-streams.uk/). The first part of th
 e presentation will introduce the project and the development of a model f
 ramework based on Estimating the Circulation and Climate of the Ocean vers
 ion 4 release 2 (ECCOv4r2)\, coupled to an ocean biogeochemistry model (EC
 COv4r2-DIC). The second part will present recent results from a suite of s
 ensitivity experiments\, highlighting the roles of rising atmospheric CO2 
 and warming using idealised 1% per year CO2 increase experiments with ECCO
 v4r2-DIC. I will discuss both the direct effects of increasing atmospheric
  CO2 and ocean warming\, and the indirect effects arising from warming-ind
 uced modifications to ocean circulation and transport\, with a focus on th
 e Gulf Stream and the subpolar North Atlantic. The idealised experiments s
 how that the increase in atmospheric CO2 is the dominant driver of enhance
 d carbon uptake along the Gulf Stream and in the subpolar North Atlantic. 
 However\, the spatial pattern of warming can modulate carbon uptake in the
  subpolar region\, reflecting both local and remote impacts of warming on 
 ocean transport and mixing.
LOCATION:BAS Seminar Room 1
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