Hello Pangeo community!
I wanted to share with you what I think is an exciting freely-accessible, cloud-optimized, dataset: HYCOM-OceanTrack! This dataset comprises sea surface height and near-surface velocity at hourly time steps on an Eulerian grid from a global HYCOM, 1-year, 1/25 degree simulation resolving the ocean general circulation and the tides. In addition, it comes with nearly 13M Lagrangian trajectories of particles released in the Eulerian velocity fields thanks to Ocean Parcels.
This dataset is made available as zarr archived in an AWS S3 bucket thanks to the AWS Open Data program so you can open it in a few lines of code. The dataset is described in details in a recent publication (Elipot et al. 2024b in Scientific Data) and we provide python tutorial notebooks to get you started. Some of the tools for analyzing the Lagrangian data come from the clouddrift package which we describe in a recent publication in the Journal of Open Source Software (Elipot et al. 2024a).
We have a couple of papers in the pipeline analyzing these data but we believe in open science and open data so we are sharing these data now. Please use them and let us know. We hope this effort contributes to democratize numerical ocean data. All this funded and supported by AWS, NSF, ONR, and the University of Miami.
It was a big effort to produce the Lagrangian trajectories (thank you to the Parcels community and @erikvansebille in particular) and to transform the Eulerian data into a cloud-optimized format (thanks @rabernat et al. for the rechunker). Some of you may remember the most epic discussion from my post about 4 years ago … 
Ok I am done with these advertisements, let me know if you have any question!
