J. ALDAY

Experience

La Caixa Junior Leader Fellow

Instituto de Astrofísica de Andalucía

September 2025 to Present

Research focused on characterising the variability of C isotopes in the atmosphere of Mars from surface to space, through a combination of measurements from different Mars orbiters and ground-based telescopes, together with the development of photochemical and escape models.

Postdoctoral Research Associate

The Open University

December 2021 to August 2025

Research focused on characterising the O and C isotopic composition of CO in the atmosphere of Mars using TGO/ACS, together with the development of a one-dimensional photochemical model to simulate the isotopic fractionation between CO2 and CO.

JSPS Postdoctoral Fellow

University of Tokyo

February 2023 to November 2023

Postdoctoral fellowship funded by the Japanese Society for the Promotion of Science (JSPS) to investigate the isotopic composition of the atmosphere of Mars. Research was focused on the analysis of observations of Mars from the SOFIA aircraft to characterise the spatial variations in the O and H isotopic composition of water vapour.

Postdoctoral Research Assistant

University of Oxford

March 2021 to November 2021

Research focused on the definition of data products for the design of an Earth-observing Compact Infrared Radiometer.

DPhil student

University of Oxford

October 2017 to March 2021

Research focused on measuring the H, C and O isotopic composition of CO2 and H2O using solar occultation observations from the Atmospheric Chemistry Suite onboard the ExoMars Trace Gas Orbiter. Funded through the Aurora programme of the UK Space Agency.

Student Placement

Southwest Research Institute

March 2017 to June 2017

Research focused on the interpretation of the Ganymede HST observations and the application for similar UV observations of Europa with the Hubble Space Telescope.

Postgraduate student

KTH Royal Institute of Technology

August 2016 to June 2017

Research focused on the development of a processing pipeline to analyse UV measurements of Callisto and Ganymede made with the Hubble Space Telescope.