Reabsorption of Lee-Wave Energy in Bottom-Intensified Currents

README: Reabsorption of Lee-Wave Energy in Bottom-Intensified Currents Overview This data product supports the study investigating the generation, reabsorption, and dissipation of internal lee waves interacting with a bottom-intensified, laterally confined jet over 1-D linear topography. The archive includes numerical simulation outputs, configuration files, and post-processed diagnostic variables used to evaluate the Reynolds-decomposed energy budgets and lee-wave energy sinks. Repository Structure leewaves/: PSOM configuration and input parameters required to set up the numerical simulations. output/: NetCDF output from PSOM simulations. analysis/: MATLAB scripts for visualizing lee waves, calculating energy budgets, and generating manuscript figures. results/: Figures presented in the manuscript. Data Description Grid and Coordinate System The simulations are conducted in a zonally periodic channel with coordinates (x, y, z) corresponding to the zonal, meridional, and vertical directions. Key Variables The processed datasets include the following variables saved in NetCDF format: u, v, w: Velocities at cell centers. rho: Density at cell centers. uf, vf, wf: Velocities at cell faces. ptfx, ptfy, ptfz: Pressure at cell faces. Scientific Findings The diagnostic framework evaluates the wave energy budget to test the alignment with linear wave action conservation predictions. In a bottom-intensified current, wave action conservation suggests that only a fraction of the generated lee-wave energy is dissipated, while the bulk is reabsorbed into the background flow. Numerical simulations identified an equal partitioning between reabsorption and dissipation for near-buoyancy generation of lee waves 1-D linear topography ($|kU_0|=0.9N$, where $k$ is the along-stream topographic wavenumber, $|U_0|$ is the near-bottom flow speed, and $N$ is the buoyancy frequency). Citation If you use this data product or configuration setup in your research, please cite the original paper: Wu, Y., Kunze, E., Tandon, A., & Mahadevan, A. (2023). Reabsorption of Lee-Wave Energy in Bottom-Intensified Currents. Journal of Physical Oceanography, 53(2), 10.1175/JPO-D-22-0058.1. Contact For questions regarding the dataset or model setup, please contact Yue Cynthia Wu at the Department of Naval Architecture and Marine Engineering, University of Michigan.