University of Cambridge > > British Antarctic Survey > Controls over mesopelagic mineralisation

Controls over mesopelagic mineralisation

Add to your list(s) Download to your calendar using vCal

If you have a question about this talk, please contact Claire Waluda.

If external to BAS, please email the organiser in advance to gain access to the building

The depth at which organic carbon exported from the surface ocean is remineralised exerts a strong control over atmospheric composition. Recent work suggests that remineralisation depth is strongly correlated with temperature, however correlation does not imply causality. In this work we firstly show that the relationship between temperature and remineralisation depth is consistent with the fundamental relationships between temperature and respiration and temperature and viscosity, implying that the relationship may be causative. We then implement it in a numerical model of ocean carbon cycling and show that it leads to organic matter being mineralised too deep compared to reality. The implication of this is that environments not yet sampled such as blooms and upwelling regions in the Southern Ocean and around the Equator have much shallower mineralisation profiles than the open ocean low production biomes we have sampled to date. We will describe future observational programmes to test this hypothesis.

This talk is part of the British Antarctic Survey series.

Tell a friend about this talk:

This talk is included in these lists:

Note that ex-directory lists are not shown.


© 2006-2024, University of Cambridge. Contact Us | Help and Documentation | Privacy and Publicity