Group Members

Group Leaders

The ACRC Group Leaders are a group of individual academics and researchers working in the area of Atmospheric Composition, Radiation and Climate.

Professor Richard Allan

Professor in Climate Science

I use Earth Observation data to explore fluctuations in clouds, water vapour, rainfall and the Earth’s radiative energy balance and use this information to assess the realism of climate prediction models and improve our understanding of the climate system. I was a lead author for the recent Intergovernmental Panel on Climate Change 6th assessment report and am affiliated with the National Centre for Earth Observation.

Professor Nicolas Bellouin, Professor in Climate Processes

I study interactions between atmospheric aerosols and radiation, clouds, chemistry and vegetation, with a recent focus on aviation. The aim of my research is to better estimate the aerosol radiative forcing of climate change from satellite observations, re-analyses, and global Earth system modelling. I am currently seconded to Institut Pierre Simon Laplace and based at Sorbonne Université to lead the Climaviation research project on the climate impact of aviation.

Professor William Collins

Professor in Climate Processes

Professor Michaela Hegglin

Professor in Atmospheric Chemistry

Earth observations, atmospheric chemistry and transport, upper troposphere and lower stratosphere processes, stratospheric ozone, air pollution, chemistry-climate coupling, and Earth-system model evaluation. PI of the ESA Water Vapour Climate Change Initiative. Also Director at the Institute of Climate and Energy Systems, Forschungszentrum Jülich, Jülich (Germany).

Professor Robin Hogan

Professor of Atmospheric Physics

Dr Claire Ryder

Associate Professor in Mineral Dust Processes

I am interested in mineral dust: how dust affects weather, climate and society, and how weather and climate in turn impact mineral dust emissions, transport and impacts. Dust in-situ airborne observations (large research aircraft and UAV), remote sensing observations and dust modelling from NWP to climate scale. Impacts of dust on

Professor Keith Shine

Regius Professor of Meteorology and Climate Science

I am currently the Department’s first Regius Professor of Meteorology and Climate Science. I have worked for many years in the general areas of the  Earth’s (changing) radiation budget. Currently my focus is on (i) radiative forcing of climate change, particularly due to greenhouse gases and (ii) the radiative impact of water vapour and its continuum.

Dr James Weber

Lecturer in Atmospheric Radiation, Composition and Climate

Dr Weber’s research interests lie in the interactions between atmospheric composition and climate with a focus on climate change mitigation strategies including wide scale reforestation and methane reductions. Dr Weber contributes to the scientific development of the United Kingdom Earth System Model (UKESM) and uses it to perform experiments to examine how changes to atmospheric composition (chemistry and aerosols) will affect climate and, in turn, may be affected by climate. He is also interested in air quality having done research into moorland burning in the Peak District and the impact of the clean air zone in Sheffield.

Dr Laura Wilcox

Associate Professor

Postdoctoral Research Assistants/Researchers





Dr Andrea Dittus

NERC Independent Research Fellow, ‘Understanding changes in climate and climate variability in a net-zero world’

Dr Hao Ye

PDRA working on the ESA Water Vapour Climate Change Initiative, with Prof Michaela Hegglin





Dr Gill Thornhill

PDRA working on the InHALE project, looking at the climate impacts of halocarbons emitted into the atmosphere, working with Prof Keith Shine

Dr Lydia Hill

PDRA working with Prof Nicolas Bellouin

Dr Ranjini Swaminathan

NCEO UKESM Core Scientist (NCEO) working with Prof Richard Allan

Dr Tanusri Chakraborty

PDRA working on Climate Effects of Hydrogen in the HECTER (Hydrogen Emissions: Constraining the Earth system Response) project, working with Prof Keith Shine

PhD students

We welcome students interested in all aspects of aerosol interactions with radiation, clouds and climate. Please contact us, or see the Department of Meteorology PhD Programmes page.

Max Coleman

Climate Response to Short-lived Pollutants (CReSP), supervised by Prof Bill Collins, Prof Keith Shine & Prof Nicolas Bellouin

Natalie Ratcliffe

Using aircraft observations of mineral dust to improve understanding and modelling of dust transport and deposition processes, supervised by Dr Claire Ryder and Prof Nicolas Bellouin




Thea Stevens

Upper Tropospheric Humidity and Climate Change, supervised by Prof Richard Allan and Prof Michaela Hegglin





Meryl Anil

The role of ozone in sub-seasonal to seasonal weather prediction, supervised by Prof Michaela Hegglin





Catherine Toolan

Sakina Alblooshi

Effects of charged dust on meteorological processes, supervised by Dr Keri Nicoll, Prof Giles Harrison and Dr Claire Ryder

Previous Group Members

Click here to see previous group members