My students, post-docs, and I work on geophysical fluid dynamics,
computational science, and applied estimation.
In climate dynamics we work on
the dynamics of ocean overturning on long
time scales, a crucial aspect of climate dynamics.
We have developed a multi-scale model for the interaction of waves and
currents, with which we are now able to consider a variety of phenomena
on global and shelf scales.
We are presently extending the model via stochastic
parametrizations to handle wave breaking and the effects of wind on the
generation and destruction of waves. We are also using the model to study
nearshore flows, such as rip currents and longshore currents.
We work on tools for the assimilation of data and model results. This
is an area of estimation which is emerging as one of the most important
tools in geophysics.
A new initiative is the development of numerical estimation techniques
for the assimilation of Lagrangian data into oceanic models.
Predictability is a new area of work for me, which I am working on with
post-docs.
We are also
working on fast estimation techniques appropriate for the non-Gaussian
and nonlinear nature of hydrology, in particular, groundwater and oil/water mixtures.
We also develop numerical techniques for the evolution of biofluids and
mechanical membranes.
I am also a member of the computational science and numerical analysis
group in the Mathematics Department, and I hold a joint appointment in
Physics as well as in Atmospheric Sciences.
I spend most of my summers at Los Alamos and at Argonne
National Laboratories, and often take my students there for training and
for research. My students receive funding from the National Science
Foundation and the Department of Energy.
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