Publications

Spatially distant sources of neodymium (Nd) to the ocean that carry different isotopic signatures (εNd) have been shown to trace out …
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We develop novel locally defined diagnostics for the efficiency of the ocean’s biological pump by tracing carbon throughout its …
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Large compilations of heterogeneous environmental observations are increasingly available as public databases, allowing researchers to …
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We explore how the iron dependence of the Si:P uptake ratio RSi:P of diatoms controls the response of the global silicon cycle and …
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It is well recognized that the atmospheric deposition of iron (Fe) affects ocean productivity, atmospheric CO2 uptake, ecosystem …
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Iron fertilization is explored by tracking dissolved iron (DFe) through its life cycle from injection by aeolian, sedimentary, and …
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The ocean’s nutrient cycles are important for the carbon balance of the climate system and for shaping the ocean’s …
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We use tracers to partition dissolved iron (dFe) into the contributions from each source within a numerical model of the iron cycle …
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We systematically quantify the pathways and time scales that set the efficiency, Ebio, of the global biological pump by applying …
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Projects

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All Julia AD AIBECS Oceanography

Ocean Grids

OceanGrids.jl: Ocean grids for AIBECS.

AIBECS

The ideal tool for exploring global marine biogeochemical cycles.

Dual Matrix Tools

DualMatrixTools.jl: A Julia package for solving dual-valued linear systems.

F-1 Method

A simple, accurate, and fast AD tool for computing the Hessian of an objective function defined implictly by a system of PDEs.

World Ocean Atlas Tools

WorldOceanAtlasTools.jl: A Julia package for data from the World Ocean Atlas.

Hyper Dual Matrix Tools

HyperDualMatrixTools.jl: A Julia package for solving hyperdual-valued linear systems.

Inpaintings

Inpaintings.jl: A Julia package to inpaint missing data.

Talks/Posters

Progress in global marine biogeochemistry increasingly relies on models. In general, converting conceptual mechanisms into useful …
Feb 20, 2020 San Diego Convention Center, San Diego, California, USA
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Introducing a Julia package to efficiently differentiate an objective function defined implicitly by the solution of a large PDE …
Aug 8, 2019 School of Mathematics and Statistics, UNSW, Australia
Slides

Running standard global marine biogeochemistry models comes with large computational costs and with a steep learning curve. The …
Aug 7, 2019 Climate Change Research Centre (CCRC), UNSW, Australia
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Jan 25, 2019 Massachussets Institute of Technology, Cambridge, Massachussets, USA
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One of the most successful tools made available to oceanographers recently is the Ocean Data View (ODV) software, used “for the …
Jan 24, 2019 Massachussets Institute of Technology, Cambridge, Massachussets, USA
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Feb 21, 2018 Department of Earth System Science, UCI, Irvine, USA
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A key question about the iron cycle is how much export is supported by the different iron sources (aeolian, sedimentary, and …
Feb 12, 2018 Oregon Convention Center, Portland, Oregon, USA
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Nov 7, 2017 Department of Earth System Science, UCI, Irvine, USA
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We construct a mechanistic inverse model of the ocean’s coupled phosphorus, silicon, and iron cycles and analyze the response of …
Feb 8, 2017 Manning Clark Centre, ANU, Canberra, Australia
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“FePSi” is the first data-constrained mechanistic inverse model coupling the iron (Fe), phosphorus (P), and silicon (Si) …
Jun 8, 2016 UNSW, Sydney, Australia
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We construct a data-constrained mechanistic inverse model of the ocean’s coupled phosphorus and iron cycles. The nutrient cycling …
Feb 25, 2016 Ernest N. Morial Convention Center, New Orleans, Louisiana, USA
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We quantify the timescales and pathways that set the efficiency of the biological pump (the fraction of the phosphate inventory that is …
Jul 16, 2015 Brisbane Conference and Exhibition Centre (BCEC), Queensland, Australia
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We construct a data-constrained model of the ocean’s coupled macronutrient and micronutrient cycles. The model focuses initially …
Jun 11, 2015 UNSW, Sydney, Australia
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Nutrient transport and biological teleconnections of Ocean surface regions are diagnosed in a data-assimilated circulation model …
Oct 1, 2014 UNSW, Sydney, Australia
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Experience

 
 
 
 
 

Research Associate

School of Mathematics and Statistics, University of New South Wales

Oct 2021 – Present Sydney, NSW, Australia
Studying the biological pump in a changing climate with Mark Holzer.
 
 
 
 
 

Postdoctoral Researcher

Department of Earth Sciences, University of Southern California

Sep 2019 – Oct 2021 Los Angeles, California, USA
Modelling global marine cycles of trace metals and their isotopes with Seth John.
 
 
 
 
 

Postdoctoral Researcher

Department of Earth System Science, University of California, Irvine

Sep 2017 – Sep 2019 Irvine, California, USA
Working on improving global biogeochemistry models with J. Keith Moore and François Primeau.
 
 
 
 
 

Casual Research Assistant

School of Mathematics and Statistics, University of New South Wales

Sep 2017 – Mar 2017 Sydney, NSW, Australia
Continuing PhD work with Mark Holzer.
 
 
 
 
 

Mathematics Tutor

School of Mathematics and Statistics, University of New South Wales

Dec 2016 – Jun 2016 Sydney, NSW, Australia
Numerical Methods and Statistics, 2nd year.
 
 
 
 
 

Proposal Engineer

Degrémont, Suez Environnement

Aug 2012 – May 2011 Sydney, NSW, Australia
Managed tendering projects for Design, Construction, Maintenance and Operation contracts. Participated in business development, liaising with potential clients, advertising on company capabilities.
 
 
 
 
 

FOREX Trader Assistant

Société Générale Investment Banking

Jul 2008 – Jun 2009 Paris, France
MASEF Internship, researched new detection and calculation techniques for high frequency data used in automated arbitrage. In particular, developed real-time, unbiased stochastic moments calculation algorithms.
 
 
 
 
 

Mathematics Research Intern

École Polytechnique

Apr 2007 – Jul 2007 Palaiseau, France
École Polytechnique Specialty (Mathematics) Internship at the Laurent Schwartz Mathematics Center under the direction of Jean Lannes. Calculated the Witt ring of quadratic forms defined on number fields, on the field of p-adic numbers, and on Dedekind rings such as the integers.
 
 
 
 
 

IT Intern

Bioforce Institute

Sep 2004 – Feb 2005 Lyon, France
The Bioforce institue provides training and careers advice in aid programmes and logistics. Developed an Access database to improve communication and management.

Contact

Popular Topics

AD AIBECS Algebra Dual Numbers Hyperdual Numbers Julia Oceanography Optimization