Colm-cille P. Caulfield

Colm-cille P. Caulfield is Professor at the Department of Applied Mathematics and Theoretical Physics, University of Cambridge, where he leads research on environmental and geophysical fluid dynamics. He is a core supervisor within the Cambridge NERC Doctoral Landscape Awards programme (CREATES), shaping the next generation of climate-focused researchers.

His research centres on the fundamental physics of stratified turbulence and its pivotal role in global climate processes. Using state-of-the-art direct numerical simulations, laboratory experiments and modern data-driven techniques, he explores how buoyancy forces and shear instabilities control vertical mixing in the ocean and atmosphere. Key themes include:

• Instability and transition to turbulence in stably stratified flows
• Mixing efficiency and scalar transport across density interfaces
• Parameterisation of small-scale turbulence for large-scale climate models
• Integration of machine-learning approaches with classical fluid-mechanical theory

Across more than eighty publications since 2020 his work has progressively fused rigorous mathematical analysis with high-resolution simulation and observational data, revealing new scaling laws, regime transitions, and transport mechanisms central to understanding heat, carbon and pollutant dispersion in the Earth system.

Awards & Recognition
No specific honours are listed in the provided material.

Research Supervision & Funding
As a CREATES supervisor he mentors doctoral candidates across Cambridge departments and partner institutes including the British Antarctic Survey. Projects span idealised DNS studies of stratified shear instabilities through to development of improved sub-grid-scale parameterisations for ocean and climate models.

Laboratory & Collaborations
He leverages the High Performance Computing Service at Cambridge alongside experimental facilities and field campaigns coordinated through national and international consortia.