Optimal transport in atmosphere and ocean problems

13th-14th April 2026
Center for Mathematics of Planet Earth, University of Reading, UK

The University of Reading




The Centre for Mathematics of Planet Earth is hosting a workshop on optimal transport in atmosphere and ocean problems at the University of Reading, UK. The workshop will review recent developments in the field and will feature a crash course on optimal transport theory and related numerical methods, given by David Bourne.

Optimal transport (OT) offers a robust theoretical and numerical framework for many problems relating to weather and climate. It defines a natural metric for use in data assimilation and forecast verification, and it is the theoretical underpinning of energy minimisation problems that are central to idealised models of the atmosphere and ocean. Efficient numerical OT solvers have paved the way for the effective application of OT methods to real data. The goal of this workshop is to review recent developments in this field, to scope out potential future applications, and to generate new collaborations by introducing OT and its relevance in atmosphere and ocean problems to a broader audience.

Dates: Monday 13th April (10:30 arrival, 11:00 start) - Tuesday 14th April (15:00 end) 2026

Location: Room 1L61, Department of Meteorology, Brian Hoskins Building, University of Reading, Reading, UK

Registration: sign up using this form.

Deadline for registration: Monday 9th March

Contact: guannan.hu@reading.ac.uk, c.egan@reading.ac.uk

Organisers: Charlie Egan, John Methven, Guannan Hu


Travel information

Reading is accessible by train from London and other parts of the UK. The Brian Hoskins Building (formerly called the Meteorology building) is building number 58 on this map of the University of Reading Whiteknights campus. Regular bus services run from Reading train station to Whiteknights Campus and Earley Gate including the 21 Claret and the 17 Purple.

Accomodation

We recommend staying at the ibis Reading Centre, which is close to the train station.

Schedule
Session/talk Speaker Start End
Day 1: 13th April
Welcome11:0011:10
Fundamentals and historical overview
Introduction to OT: Part IDavid Bourne11:1011:55
OT in the analysis of geophysical flow modelsBeatrice Pelloni11:5512:25
Lunch12:2513:30
Intro to OT: Part IIDavid Bourne13:3014:15
Data assimilation and forecast verification
Unbalanced OT for Forecast VerificationJacob Francis14:1514:45
Break14:4515:15
Spatial verification of global precipitation forecastsGregor Skok15:1515:45
Learning transport maps for probabilistic data assimilationEviatar Bach15:4516:15
Discussion16:1517:00
Meal at Bill's Restaurant and Bar, Reading19:00
Day 2: 14th April
Reference states of the atmosphere and ocean
Computing the slowly evolving background state of the atmosphereCharlie Egan09:0009:30
Ideas for Extending the Optimal Transport Method to Zonally Asymmetric Atmospheric Background StatesTobias Hempel09:3010:00
Optimal transport formulation of Lorenz available potential energyToyo Sadare10:0010:30
Break10:3011:00
On the choice of cost function for available potential energy computations in atmosphere and oceansRemi Tailleux11:0011:30
Volume-preserving Lagrangian averaging using polar factorisationJacques Vanneste11:3012:00
Discussion12:0012:30
Lunch12:3013:30
Numerical methods
Optimal transport for adaptive meshing on the sphereColin Cotter13:3014:00
Mapping and interpolating geophysical data with Optimal TransportLeo Middleton14:0014:10
Discussion14:1014:30
End


Confirmed participants
  • Beatrice Pelloni
  • Jacob J.M Francis
  • David Bourne
  • Jacques Vanneste
  • Toyo Sadare
  • Mike Cullen
  • Shaerdan Shataer
  • Dan Shipley
  • Eviatar Bach
  • Nikos Katzourakis
  • Mathis Hardion
  • Remi Tailleux
  • Tom Frame
  • Christopher O'Reilly
  • Gregor Skok
  • Tobias Hempel
  • Leo Middleton
  • Colin Cotter
  • Simone Carano
  • Chung-Chieh Wang
  • Wang Xing
  • Volkmar Wirth
  • Llorenç Lledó
  • Jemma Shipton
  • Michael Riemer
  • Abdelghani Ouahab