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DARE Seminar: Three Ways of Thinking About ENSO

28 May @ 4:00 pm - 6:00 pm

You’re invited to join us in person at DARE HQ for this DARE Seminar, followed by networking and nibbles!

The event will also be streamed on Zoom for those who are unable to join in person.

We’ll hear from Dr Nandini Ramesh, Senior Research Scientist in Natural Hazards and Climate Risk at Data61, CSIRO!

Three Ways of Thinking About ENSO

El Niño-Southern Oscillation (ENSO), the phenomenon that gives rise to El Niño and La Niña events, has long been a subject of study by applied mathematicians. This phenomenon is a quasi-periodic oscillation between El Niño (warm) and La Niña (cool) events which occur every 2-7 years via air-sea coupled processes in the ocean and atmosphere of the equatorial Pacific. These events, by perturbing patterns of atmospheric circulation, produce changes to local weather on every continent, making this a phenomenon with global consequences.

The physical processes that give rise to ENSO have characteristics of chaotic systems, while also displaying a range of spatial and temporal patterns. In this talk, I will discuss three very different mathematical framings of the tropical Pacific system: first, as a dynamical system with regime-like behaviours; second, as a discrete system with three different states; and third, using Bayesian quantile regression to characterize spatial changes to the system over time. Each of these lenses has resulted in new insights into how to predict ENSO and understand how it is changing over time.

About Dr Nandini Ramesh

Dr Nandini Ramesh is a Senior Research Scientist in Natural Hazards and Climate Risk at Data61. She received her PhD in Ocean and Climate Physics from Columbia University as a NASA Earth and Space Science Fellow. She then worked as a Postdoctoral Scholar at the University of California, Berkeley, following which she was a Research Fellow and Chief Investigator at the ARC Centre for Data Analytics for Resources and the Environment at the University of Sydney.

Her research focuses on the physics of tropical climate on seasonal to decadal timescales, with a particular interest in the impacts of large-scale phenomena such as El Niño and La Niña events and monsoons on rainfall. She uses a range of techniques spanning dynamical systems theory, machine learning, computational fluid dynamical modelling and geospatial data analysis to answer questions about fundamental physical processes and the predictability of these phenomena.

Register today!

Finger food will be provided. Please inform us of any dietary requirements when registering.

If you have any questions about this event, please contact dare.centre@sydney.edu.au.

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Details

Date:
28 May
Time:
4:00 pm - 6:00 pm

Venue

DARE HQ, Biomedical Building
1 Central Avenue
South Eveleigh,

Organiser

DARE Centre

DARE SEMINAR SERIESFortnightly on Tuesdays

Join DARE’s Seminar Series to hear from experts about applications of statistical and data science methods to DARE’s core domains – water, minerals and biodiversity. Our Seminars run every fortnight on Tuesdays and you can find the program for 2024 here.