Dr Michael I Cotterell

PhD, MSci

  • BS8 1TS


Research output per year

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Personal profile

Research interests

My research is focused on measurements of aerosol optical properties and how these relate to aerosol microphysical parameters. In particular, we concentrate on instrument design for both laboratory and field-based measurements of light interactions with aerosols, developing cavity ring-down and photoacoustic spectrometers for measuring aerosol-light interactions, either on aerosol ensembles (100s - 1000s of particles) or on single particles confined in an optical or electrodynamic trap. Supported through a NERC Independent Research Fellowship, my current efforts are in measuring the evolving optical properties of brown carbon aerosol - a major but poorly understood constituent of atmospheric aerosol.

Additionally, my research uses finite element modelling for photoacoustic cell design, developing new measurement approaches for characterising aerosol optical properties, modelling aerosol-light interactions in plane travelling and cavity standing wave fields, aerosol refractive index retrievals, and relating refractive index to particle composition and structure.

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Research Output

  • 14 Article (Academic Journal)
  • 2 Conference Contribution (Conference Proceeding)
  • 1 Other contribution
Open Access
  • 10 Downloads (Pure)

    Evaluating biases in filter-based aerosol absorption measurements using photoacoustic spectroscopy

    Davies, N. W., Fox, C., Szpek, K., Cotterell, M. I., Taylor, J. W., Allan, J. D., Williams, P. I., Trembath, J., Haywood, J. M. & Langridge, J. M., 27 Jun 2019, In : Atmospheric Measurement Techniques.

    Research output: Contribution to journalArticle (Academic Journal)

    Open Access
    71 Downloads (Pure)

    Observation of absorbing aerosols above clouds over the south-east Atlantic Ocean from the geostationary satellite SEVIRI – Part 1: Method description and sensitivity

    Peers, F., Francis, P., Fox, C., Abel, S. J., Szpek, K., Cotterell, M. I., Davies, N. W., Langridge, J. M., Meyer, K. G., Platnick, S. E. & Haywood, J. M., 31 Jul 2019, In : Atmospheric Chemistry and Physics.

    Research output: Contribution to journalArticle (Academic Journal)


    Accurate Representations of the Physicochemical Properties of Atmospheric Aerosols - Faraday Discussion 2017

    Marsh, A. (Creator), Haddrell, A. E. (Creator), Rovelli, G. (Creator), Cotterell, M. I. (Creator), Rickards, A. (Creator), Song, Y. C. (Creator), Miles, R. E. H. (Creator), Bzdek, B. R. (Creator), Marshall, F. (Creator), Willoughby, R. (Creator) & Reid, J. P. (Creator), University of Bristol, 26 May 2017


    Dynamic Measurements and Simulations of Airborne Picolitre-Droplet Coalescence in Holographic Optical Tweezers (J Chem Phys 2016)

    Marsh, A. (Creator), Bzdek, B. R. (Creator), Cotterell, M. I. (Creator), Reid, J. P. (Creator), Song, Y. C. (Creator), Rovelli, G. (Creator), Willoughby, R. (Creator), Haddrell, A. E. (Creator), Miles, R. E. H. (Creator), Marshall, F. (Creator) & Rickards, A. (Creator), University of Bristol, 16 Jun 2016


    Surface Tension Chem Sci (2015) Paper

    Marsh, A. (Creator), Song, Y. C. (Creator), Willoughby, R. (Creator), Cotterell, M. I. (Creator), Haddrell, A. E. (Creator), Rovelli, G. (Creator), Marshall, F. (Creator), Miles, R. E. H. (Creator), Reid, J. P. (Creator) & Rickards, A. (Creator), University of Bristol, 1 Oct 2015