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Matthew Hills |
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Doctoral CandidateDept. of Atmospheric SciencesUniversity of Washington Adviser: Prof. Dale Durran Research Areas
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Hi, I'm Matt Hills - a sixth year graduate student in the Department of Atmospheric Sciences at the University of Washington. I am working with Dale Durran studying trapped lee waves, with a focus on how these waves decay with time in nature. More specifically, my work has involved using high-resolution idealised simulations of lee waves forced by a spatially and temporaly varying mean flow. Using this setup, I have shown that horizontal gradients in the large-scale flow can force the untrapping of trapped waves by modifying their horizontal wavelengths. This untrapping causes the waves to decay as they become vertically propagating. This decay occurs over timescales comparable to the rate of decay seen in nature. I am currently working on completing my Ph.D. thesis work, focussing on the amplitude and decay and lee waves in non-steady flows. Regarding wave amplitude, I am studying how 3D terrain and flow effects can affect wave amplitude at distances downwind of the terrain. My work into wave decay is looking at how wave decay through boundary layer absorption and stratospheric leakage compare, and how these processes act in non-steady, three-dimensional flows. Curriculum VitaePublications and Submitted Work
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