Stephanie works on mineral dust in climate models, including dust production, atmospheric lifecycle and dust-climate-ecosystem interactions.
Areas of expertise:
modelling mineral dust production;
the atmospheric lifecycle of dust aerosol;
direct radiative effects of dust on climate;
dust - ecosystem - climate interactions.
Stephanie's research work involves the development of the mineral dust scheme within the Met Office Unified Model and its application to climate science.
The dust scheme has been implemented into the Met Office Unified Model and validated against observations of dust concentrations and aerosol optical depths, as well as deposition rates. Further development of this is an ongoing process. The central part of the scheme is the modelling of dust emissions, but it also includes the transport and deposition of dust, as well as its radiative properties. The scheme was developed for use in the Met Office Hadley Centre's climate models, but variants of it are also employed in high resolution numerical weather prediction models.
Stephanie is now using the dust scheme within the HadGEM2-ES earth system model to investigate interactions and feedbacks between dust, climate and ecosystems. These include such processes as the fertilisation of ocean biota by dust, affecting dimethylsulphide emissions, sulphate aerosol concentrations and hence climate, and the effect of changing climate on vegetation and thus on dust emission areas. Direct dust-climate interactions, through the radiative effect of dust on the atmosphere and surface and the potential feedback of this onto dust emissions are also being studied.
On joining the Met Office Hadley Centre Stephanie initially worked on climate variability. She also spent some time developing the representation of non-CO2 greenhouse gases in the Met Office Unified Model before moving to work on dust aerosol.
Stephanie's first degree was in Physics from Nottingham University. Her PhD in Nuclear Physics from Imperial College, London was gained whilst working for UKAEA Harwell. She has also worked in computing, as a consultant Unix support analyst for Tessella and on the development of a Forth cyclotron control system for Oxford Instruments.