Global ocean Eddy Kinetic Energy from three decades of satellite altimetry observations

This repository contains the codes used to conduct the study of Barceló-Llull, B., Roselló, P., Combes, V., Sánchez-Román, A., Pujol, M. I. & Pascual, A. entitled "Kuroshio Extension and Gulf Stream dominate the Eddy Kinetic Energy intensification observed in the global ocean" The manuscript is under review and the preprint is available at https://doi.org/10.48550/arXiv.2406.08014.

This repository is built from the repository of Pere Rosselló available at: https://github.com/pererossello/EKE_all_two_sat

Repository Structure

This repository is organized as follows:

• code/: Contains the Python code used for data retrieval, pre-processing, and figure generation.

  • download_data/: Jupyter notebooks for downloading the raw data.
  • preprocessing/: Jupyter notebooks for each step of the data preprocessing.
  • generate_figures/: Jupyter notebooks for generating each figure in the manuscript.
  • utils.py: Utility functions used throughout the project.
  • data_retrieve_utils.py: Functions used for data retrieval.
  • preprocessing_utils.py: Preprocessing functions.
  • plot_utils.py: Functions used for plotting the results.

• results/: Contains the results of the computations done in the preprocessing/ directory, including netCDF files with EKE time series.

• figures/: Contains the figures generated by the code.

• tables/: Contains the table generated by the code.

Getting Started

Instructions for downloading the data and executing the computations can be found in the Jupyter notebooks in the download_data/ and preprocessing/ directories, respectively.

However, if you only wish to evaluate the EKE time series and/or generate figures, you can directly run the Jupyter notebooks in the generate_figures/ directory with the preprocessed data provided in results/.

Data

The data used in this study comes from the global multi-satellite Delayed Time (DT) Data Unification and Altimeter Combination System (DUACS), made freely available through the European Copernicus Program.

We use two types of altimetric L4 gridded products: the all-satellites (all-sat) and the two-satellites (two-sat) products.

Please refer to the Data and Methods section for more information on the data used in this study, including how it was retrieved and processed.

License

This project is licensed under the MIT License - see the LICENSE.md file for details.