Ryan Shìjié Dù

Geophysical Fluid Dynamics

Mon, 01 Jan 0001 00:00:00 +0000

Guest lecture at Columbia University on geophysical fluid dynamics models in Dedalus.

My Name

Mon, 01 Jan 0001 00:00:00 +0000

What is my name?

My parents named me 杜世杰, written Dù Shìjié in pinyin . I chose Ryan for use in English-speaking settings. In publications, I combine the two: Ryan Shìjié Dù.

To typeset my name in LaTeX, use Ryan Sh\`iji\'e D\`u.

Why the tone marks?

Mandarin is a tonal language, and pinyin tone marks distinguish pronunciations that would otherwise be written alike. Without them, it is harder to tell how to say my name.

Outreach & Service

Mon, 01 Jan 0001 00:00:00 +0000

Mentoring

Wyatt Conger (2026): SURF summer undergraduate research at Colorado School of Mines.
Qi Liu (2024): Undergraduate research at NYU; now a Ph.D. student at CAOS, NYU.
Kai Hung and Daniel Wang (2023): Co-mentored through NYU’s Applied Math Summer Undergraduate Research Experience (AM-SURE).
Andreas Louskos (2023): Co-mentored his master’s thesis at NYU.

Peer review

Geophysical Research Letters: 7 reviews
Geoscientific Model Development: 1 review
IEEE Transactions on Geoscience and Remote Sensing: 1 review
Journal of Advances in Modeling Earth Systems: 1 review
Journal of Atmospheric and Oceanic Technology: 2 reviews
Journal of Fluid Mechanics: 3 reviews
Journal of Geophysical Research Oceans: 2 reviews
Journal of the Atmospheric Sciences: 1 review
Nature Communications: 1 review
Ocean Science: 2 reviews

This list is automatically updated from my ORCiD profile.

Research

Mon, 01 Jan 0001 00:00:00 +0000

I am inspired by observed phenomena in the Earth system and motivated to understand their underlying fluid physics. My interests span the ocean and its interactions with the atmosphere and sea ice. My current research focuses on ocean dynamics, the air–sea interface, and surface waves.

Trained as a mathematician, I approach problems by formulating and analyzing equations, interpreting observational data and model output, and conducting numerical experiments. I particularly enjoy stochastic methods, asymptotic analysis, geospatial statistics, and scientific computing.

Resources

Mon, 01 Jan 0001 00:00:00 +0000

Dedalus

I use the Dedalus3 PDE solver in my research. My note GFD in Dedalus collects write-ups and code for classic simple geophysical fluid dynamics models. It may be useful for learning Dedalus or teaching GFD, and contributions are welcome.

NYU Greene Cluster

My tutorial for using Dedalus3 on Greene with MPI .
My Greene .bashrc file , with shortcuts for Greene and Slurm.
Globus helps transfer data to and from Greene, including resuming interrupted transfers.

Courant GFD written exam

I have typed up solutions to the Courant Geophysical Fluid Dynamics written exam .