International Eurasian Academy of Sciences, IEAS

Academician

Steven Arnold

Profile:

Elected an Academician of the International Eurasian Academy of Sciences (IEAS) on 8 November 2017, Professor Steven R. Arnold is a leading British atmospheric chemist whose research has advanced understanding of the interactions between trace gases, aerosols, climate, ecosystems, and human societies. He is Professor of Atmospheric Composition in the School of Earth and Environment at the University of Leeds, where he also serves as Director of the Centre for Environmental Modelling and Computation (CEMAC). After receiving his B.A. and M.Sci. in Natural Sciences from the University of Cambridge, he obtained his Ph.D. in Atmospheric Science from the University of Leeds and subsequently built his academic career there, progressing from postdoctoral researcher to Associate Professor and then to his current professorship. His international leadership includes serving as the United Kingdom representative and Vice-Chair of the International Arctic Science Committee Atmosphere Working Group, Co-Chair of the IGAC–IASC PACES initiative on Arctic air pollution, and a member of the Arctic Council’s Arctic Monitoring and Assessment Programme Expert Group on short-lived climate forcers.

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Professor Arnold’s research focuses on the processing and transport of trace constituents in the troposphere, particularly air quality, short-lived climate pollutants in the Arctic, and the interactions between atmospheric composition, ecosystems, and climate. By integrating numerical modelling with observations from aircraft, satellites, and surface networks, he has elucidated how biomass burning affects high-latitude ozone and reactive nitrogen, identified large-scale feedbacks between natural aerosols and climate, and demonstrated the influence of air transport over tropical forests on rainfall. His work has also advanced understanding of the global oceanic isoprene source and its contribution to marine organic carbon aerosol, as well as the atmospheric chemistry governing oxidant abundances under cold, low-light Arctic conditions. He has authored 79 peer-reviewed publications, with approximately 2,600 citations and an h-index of 30, including four papers published in Nature and Nature Geoscience. Collectively, his research has contributed to both fundamental advances in atmospheric chemistry and policy-relevant assessments of environmental change.