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Dr Justin Langridge

Justin manages the Aerosol Research Group that makes observations from the FAAM BAe-146 aircraft to study a range of atmospheric aerosol processes and impacts.

Current activities

Justin manages the Aerosol Studies in Observation Based Research (OBR). The group conducts innovative research using measurements from a range of specialist aerosol instruments in order to develop understanding of atmospheric aerosol processes and test and improve their representation in Met Office models.

Currently, Justin is leading a project to develop a new instrument for measurement of aerosol optical properties from the FAAM BAe-146 research aircraft. The instrument will use two state-of-the-art spectroscopic techniques to quantify multi-wavelength aerosol absorption and extinction. A key focus will be to provide the high quality measurements needed to evaluate the representation of absorbing aerosol in state-of-the-art models used for climate prediction.

Justin is also involved in the planning of upcoming field projects including deployment to India in 2016 as part of the joint NERC-MoES project, SWAAMI. This project will characterize aerosol properties in the Indo-Gangetic Plain and northern Bay of Bengal in order to evaluate aerosol impacts on the Indian monsoon.

Career background

Justin obtained a first class degree in Natural Sciences (Physical Chemistry) from the University of Cambridge in 2004 and completed a PhD at the same institute in 2008. His doctoral work focused on development of a novel broadband spectroscopic technique for ultra-sensitive measurement of atmospheric reactive trace gases. He used the instrument to study various problems related to air quality and climate including the chemistry of nocturnal nitrogen oxides NO3 and N2O5, the heterogeneous photo catalytic generation of HONO from NOx and new particle formation events from atmospheric processing of marine halogen emissions. 

Justin then moved to the United States and spent four years as an Aerosol Research Scientist at the NOAA Chemical Sciences Division, Boulder CO. In this post he worked on the development and use of advanced instruments for aerosol optical property characterization and was involved in several airborne field campaigns focused on understanding the impacts of aerosol on atmospheric radiation. Example research included evaluation of aerosol aging impacts on radiative forcing in the Los Angeles basin and characterization of absorption from organic brown carbon in biomass burning emissions. During this time, Justin also lead a project to study the kinetics of water uptake by aerosol particles relevant to cloud droplet formation.

Justin joined the Met Office in 2013 as a Senior Scientist in the OBR Aerosol Research Group to continue research in the field of atmospheric aerosols and radiation impacts. He became manager of the group in 2014.

External recognition

  • Colorado Governor's Award for High Impact Research (collaborative), 2012.
  • CIRES Science and Engineering Outstanding Performance Award (collaborative), 2011.
  • Norrish and Unilever prizes for top graduating physical chemist, University of Cambridge, 2004.

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