To cite package ‘rpdo’ in publications use:

  Thorley J, Mantua N, Hare S (2024). _rpdo: Pacific Decadal
  Oscillation Index Data_. R package version 0.3.2.9000,
  <https://github.com/poissonconsulting/rpdo>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {rpdo: Pacific Decadal Oscillation Index Data},
    author = {Joe Thorley and Nathan Mantua and Steven R. Hare},
    year = {2024},
    note = {R package version 0.3.2.9000},
    url = {https://github.com/poissonconsulting/rpdo},
  }