Department of Chemistry

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Dr Stephen Andrews

Phone: +44 (0)1904 321215
Email: stephen.andrews@york.ac.uk
NCAS Instrument Engineering Manager/ WACL senior technical specialist

Research Interests

Accurate measurements are the cornerstone on which atmospheric chemistry knowledge is built. From the deepest oceans to the highest altitudes, analytical equipment has enabled us to determine oceanic and atmospheric composition: driving climate models and furthering our understanding of the world in which we all inhabit.                                                                  

My experience in analytical instrumentation is built upon extensive field experience and a global network of expert contacts. Harsh environments are the norm, with systems deployed in the Arctic Ocean, South East Asian rainforests and on board research aircraft, to name a few. My research strives to forward the analytical state of the art. This includes revision and improvements of existing techniques, but also novel technologies to address current climate issues.

Currently, we are building a new, cutting edge, high resolution GC-ToF mass spectrometer as part of a £49m mid-life upgrade to the UK large research aircraft.

Selected Publications

• Aircraft-based mass balance estimate of methane emissions from offshore gas facilities in the southern North Sea. M Pühl, A Roiger, A Fiehn, AM Gorchov Negron, EA Kort, S Schwietzke, ...SJAndrews. Atmospheric Chemistry and Physics 24 (2), 1005-1024. 2024
• The impact multi-decadal of changes in VOCs speciation on urban ozone chemistry: A case study in Birmingham, United Kingdom. J Li, AC Lewis, JR Hopkins, SJ Andrews, T Murrells, N Passant, ... EGUsphere, 1-20. 2023
• Measurement report: Assessment of Asian emissions of ethane and propane with a chemistry transport model based on observations from the island of Hateruma R Adedeji, SJ Andrews, MJ Rowlinson, MJ Evans, AC Lewis, ... Atmospheric Chemistry and Physics, 9229-9244. 2023
• Unreported VOC emissions from road transport including from electric vehicles SJ Cliff, AC Lewis, MD Shaw, JD Lee, M Flynn, SJ Andrews, JR Hopkins, ... Environmental Science & Technology. 2023
• Negligible Temperature Dependence of the Ozone-Iodide Reaction and Implications for Oceanic Emissions of Iodine LV Brown, RJ Pound, LS Ives, MR Jones, SJ Andrews, LJ Carpenter EGUsphere, 1-35. 2023