Particle image velocimetry (PIV) is a technique for measuring current velocities from sequential images by following features embedded within the flow, for example, floating particles or gradients in a tracer field.

The advent of ultra-high-resolution geostationary satellites such as the Himawari (Japanese Meteorological Agency) and GOES (US National Oceanic and Atmospheric Administration) missions, which deliver kilometre-scale images of the Earth every 10 minutes, provides an opportunity to use PIV to estimate ocean currents from the observed sea-surface temperature.

In addition to providing an unprecedented view of ocean surface currents at kilometre scales, the velocity fields can be combined with ocean colour images (a proxy for sea-surface chlorophyll concentrations) to study transport and uptake of carbon in the ocean. This project will be co-supervised by Dr Shane Keating (UNSW) and Dr Bror Jönsson (University of New Hampshire, USA). 

Observation impact assessment of future high-resolution observations...

Using a numerical model, this project investigates how data-streams improve model estimates.

Observation impact assessment using data assimilation

Measuring the impact of new high-res ocean observations is essential for observing infrastructure.

Bluebottle jellyfish, where do they come from?

We investigate the origins, pathways and conditions required for jellyfish to wash up on our shores.