@Misc{ 
  EgMeBoCu25,
  author = { Bourne, David and Cullen, Mike and Egan, Charlie and Methven, John },
  title = { A definition of the background state of the atmosphere using optimal transport },
  journal = {  },
  year = { 2025 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/7075/ },
  note = { cvgmt preprint}
}