OB029
The Open Ocean Carbonate Pump: From Alkalinity to Ecology (and Back Again)

Session ID#: 254892

Session Description:
The carbonate pump exerts an important control on the ability of the ocean to absorb and store atmospheric carbon dioxide through vertical fluxes of alkalinity. Biological production and export of pelagic biogenic carbonate from the upper ocean to depth transfers alkalinity away from the surface, while the dissolution of this carbonate regenerates alkalinity. This session aims to recognise the important roles of ecology in carbonate production and dissolution – from the diversity, physiology and ecology of organisms involved, to the trophic interactions that drive the regeneration of alkalinity throughout the water column.

Current global earth system models only implicitly represent carbonate pump processes. Yet a diverse set of new models, field projects and novel experiments are exploring how biological diversity and trophic interactions modulate these processes. This new understanding will pave the way to a more explicit representation of the carbonate pump in earth system models. 

This session will explore different aspects related to pelagic carbonate biogeochemistry that underpins the magnitude and functioning of the carbonate pump. Perspectives from observations, experiments and modelling, using diverse techniques and technologies are encouraged to bring a multi-disciplinary approach and perspective to our understanding of the open ocean carbonate pump.

Co-Sponsor(s):
  • Air-Sea Interactions -
  • Climate and Ocean Change -
  • Marine Ecology and Biodiversity -
Index Terms:

4805 Biogeochemical cycles, processes, and modeling [OCEANOGRAPHY: CHEMICAL]
4806 Carbon cycling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4815 Ecosystems, structure, dynamics, and modeling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4894 Instruments, sensors, and techniques [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
Student/Early Career Chair:  Ben Cala, NIOZ Royal Netherlands Institute for Sea Research, Ocean Systems, Texel, Netherlands
Primary Chair:  Prof. Alex J Poulton, Heriot-Watt University, The Lyell Centre, Edinburgh, United Kingdom
Co-chairs:  Patrizia Ziveri, Ph.D.., Universitat Autònoma de Barcelona, Institute of Environmental Science and Technology, Bellaterra, Spain and Griet Neukermans, Ghent University, Marine Optics and Remote Sensing, Ghent, Belgium
 
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