research | curriculum vitae | publications
| carrer development plan (internal)
Production of DMS and its Interaction with Climate
project (ESR V) investigates the feedback between climate
and oceanic phytoplankton through the sulphur cycle.
Dimethylsulphide (DMS) is a volatile sulphur compound produced
from the algal secondary metabolite dimethylsulphoniopropionate
(DMSP) by complex biotic interactions in marine ecosystems.
The atmospheric oxidation products of DMS affect the radiative
properties of the atmosphere by reflecting solar radiations
and by affecting the concentration of cloud condensation nuclei
(Charlson et al., 1987). DMS is the main natural source of
sulphate aerosol to the atmosphere and the major route by
which sulphur is recycled from the ocean to the continents.
The project includes: 1) the implementation of a sulphur cycle
with species-dependent production of DMSP in the Dynamic Green
Ocean Model (see below), 2) the inclusion of ocean DMS fluxes
in a climate model, 3) running simulations for future climate
scenarios including climate change. Furthermore, the impact
of ocean acidification on DMS emissions has been studied in
a mesocosm experiment.
This work is being undertaken in the framework of green
ocean, an international project aimed at developing a
community model of ocean biogeochemistry for applications
to Earth system problems. It contributes to science
objective 5 (Quantify impacts of climate change on terrestrial
and oceanic biogenic emissions of aerosols and chemically
active gases, and their effects on tropospheric chemistry)
of GREENCYCLES. It is linked with the project of Nicholas
at the University of East Anglia, Norwich, United Kingdom
(PhD student) at the Max-Planck-Institute for Biogeochemistry,
Project in Theoretical Particle Physics at the Max-Planck-Instutute
for Physics, Munich, Germany
studies in Physics at the Ludwig-Maximilian-University
in Munich, Germany, the Ecole Polytechnique Federale de
Lausanne, Lausanne, Switzerland and the University of
New South Wales, Sydney, Australia
Vogt, S. Turner, N. Yassaa, M. Steinke, J. Williams
and P. Liss, Laboratory inter-comparison of dissolved
sulphide (DMS) measurements using purge-and-trap and solid-phase
microextraction techniques during a mesocosm experiment,
Marine ChemistryIn Press, Corrected Proof, , (available online
10 October 2007).
Steinke, M., Turner, S., Paulino, A., Meyerhöfer,
M., Riebesell, U., LeQuéré, C., and Liss, P.:
Dynamics of dimethylsulphoniopropionate and dimethylsulphide
under different CO2 concentrations during a mesocosm experiment,
Biogeosciences Discuss., 4, 3673-3699, 2007. (link
S. Peñaranda and M.Vogt (2006).
Flavour-changing effects on e+e-?Hb¯s¯,Hbs¯ in
the MSSM, The European Physics Journal C- Particles and
Fields, DOI: 10.1140/epjc/s2006-02526-6
(published online 27 April 2006).