Professional summary

Research Interests

My area of expertise is in measuring and modelling the deposition, concentrations and trends of ground-level ozone, although I have worked in other areas including acid deposition and NH3 exchange. I also work with a Chemical Ionisation Mass Spectrometer (CIMS) to measure various different species and assist with instrumentation for field sites and campaigns.

From June 2018 to June 2021 I will also be working on greenhouse gas dynamics with the James Hutton Institute in Aberdeen for most of my time, although I'll still be at CEH Edinburgh regularly. So if you'd like to get in touch please look for me there.

Brief CV

I was employed as secretary to the UK Photochemical Oxidants Review Group (PORG) in 1995 to analyse and interpret UK ozone monitoring data, and to assist in the production of their report and organisation of meetings. I played a similar role with the National Expert Group on Transboundary Air Pollution (NEGTAP) from 1999 to 2002.

Currently I am working on the measurement and modelling of non-stomatal ozone deposition as well as the land/atmosphere exchange of species such as aerosols, NH3, SO2 and NOx.

Prior to starting work at CEH I was employed by Motorola (to assemble and test mobile phones) and Teleco Oilfield Services as an electronic technician.

Recent Projects


Recent Publications and Outputs

Hewitt, D. K. L., G. Mills, et al. (2016). "N-fixation in legumes – An assessment of the potential threat posed by ozone pollution." Environmental Pollution 208, Part B: 909-918.

Hayes, F., G. Mills, et al. (2016). "Consistent ozone-induced decreases in pasture forage quality across several grassland types and consequences for UK lamb production." Science of The Total Environment 543, Part A: 336-346.

Malley, Christopher S.; Cape, J. Neil; Jones, Matthew R.; Leeson, Sarah R.; Coyle, Mhairi; Braban, Christine F.; Heal, Mathew R.; Twigg, Marsailidh M.. 2016 Regional and hemispheric influences on measured spring peroxyacetyl nitrate (PAN) mixing ratios at the Auchencorth UK EMEP supersite. Atmospheric Research, 174-175. 135-141. 10.1016/j.atmosres.2016.02.013

Quality reviewed and collated meteorological, SO2, NOx and O3 concentration and flux data for submission to the ECLAIRE, NitroEurope and EMEP database: Easter Bush (2001 to date) and Auchencorth Moss (1996 to date)

Jones, S. K., C. Helfter, et al. (2017). "The nitrogen, carbon and greenhouse gas budget of a grazed, cut and fertilised temperate grassland." Biogeosciences 14(8): 2069-2088.

Song, Ling; Liu, Xuejun; Skiba, Ute; Zhu, Bo; Zhang, Xifeng; Liu, Meiyu; Twigg, Marsailidh; Shen, Jianlin; Dore, Anthony; Reis, Stefan; Coyle, Mhairi; Zhang, Wen; Levy, Peter; Fowler, David. 2018 Ambient concentrations and deposition rates of selected reactive nitrogen species and their contribution to PM2.5 aerosols at three locations with contrasting land use in southwest China. Environmental Pollution, 233. 1164-1176


1999-2005     PhD The Gaseous Exchange of Ozone at Terrestrial Surfaces: Non-stomatal                                        Deposition to Grassland
                     School of Geosciences, The University of Edinburgh
1992-1994     BSc (1st class Hons) Applied Physics with Microcomputing
                     (GEC Marconi Avionics Prize Winner)
                     Napier University, Edinburgh
1988-1991     HND Applied Physics with Microelectronics (Class Medal Winner)
                     EA1, Engineering Appreciation Certificate
                     Napier University, Edinburgh

Panels, committees and memberships

Institute of Physics - Environmental Physics Group Committee
Royal Meteorological Society