I'm a postdoc who was working in Oxford in atmospheric oceanic and planetary physics in the physical oceanography group. I've now moved to Johns Hopkins University Applied Physics Laboratory in Maryland, USA. I still working on Data assimilation, however.
I was looking at 4D variational assimilation of ERS altimetry and ATSR radiometric sea surface temperatures into an ocean model. The model used is a reduced gravity multi-layer shallow water model based on a model developed in Oxford.
My thesis can be downloaded here. (gzipped postscript).
My first year report contains much more detail on my work. Also here is my second year report.
I've also done some work with the Lorenz(1963) system including testing the ideas of data assimilation which I will apply to the ocean system. Also I have looked at the limitations of sensitivity analysis using the adjoint method, and possible ways around it. Download a copy of my first paper Sensitivity analysis of the climate of a chaotic system (Tellus A - Oct 2000).
I've helped with the practicals for the spring school on quantitive earth observation which was held here in Oxford at Easter 1999 and 2000. Here are some notes I wrote for the EO Spring school. 1999
Read my CV.
D. J. Lea (2001). Joint assimilation of sea surface temperature and sea surface height. DPhil thesis (Oxford University).
D. J. Lea, M. R. Allen, T. W. N. Haine, J. Hansen (2001). Sensitivity analysis of the climate of a chaotic ocean circulation model (abstract only). In preparation. (available soon). Email me at lea@atm.ox.ac.uk for more info.
D. J. Lea, M. R. Allen, T. W. N. Haine (2000). Sensitivity analysis of the climate of a chaotic system. Tellus 52A pp523-532.
D. J. Lea (1999). Second year report. Atmospheric, Oceanic and Planetary Physics, Dept. of Physics, Clarendon Laboratory, Parks Road, Oxford OX1 3PU, UK.
D. J. Lea (1998). First year report. Atmospheric, Oceanic and Planetary Physics, Dept. of Physics, Clarendon Laboratory, Parks Road, Oxford OX1 3PU, UK.
Last updated 17 Jan 2001.