Our group combines data from multiple platforms (models, aircraft, satellites, lab and field measurements) to better understand the influence of humans on atmospheric chemistry, air quality, and climate from urban to regional to global scales.

Recent news and highlights from our group:

Group photo on UCL campus
Karn speaks to the BBC about his research on rapid air quality degradation in tropical cities
Group photo on UCL campus
2nd Regional Europe GEOS-Chem User's Meeting at UCL in August 2023
Group photo on UCL campus
Group photo with (left to right) Karn, Gongda, Connor, Eloise, Bex, Eleanor, Nana
Ozone air pollution in Central London
Heatwaves and ozone air pollution in Central London.
[Find out more in our recently published ACP paper].
The Guardian article
The Guardian covers our work on the ubiquitous influence of agriculture on PM2.5 in UK cities.
Photo of Connor Barker
Connor Barker joins the group for a postdoc on dry deposition of oxygenated VOCs and the impact of megaconstellation missions on the atmosphere.
PM2.5 source contributors in UK cities
Rural agriculture and pollution from continental Europe dominant source of PM2.5 in UK cities.
[Find out more in our recently published paper]
Group photo on UCL campus
Our first in-person group photo since the pandemic.
[Left to right: Gongda, Rob, Nana, Eloise, Eleanor, Karn, Bex]
Photo of Eleanor Smith
Eleanor Smith joins the group to start a PhD on the impact of reactive nitrogen on air quality and climate.
Group photo at iCACGP-IGAC Joint Conference in Manchester
Members of the group at the iCACGP-IGAC Joint Conference in Manchester.
UCL MAX-DOAS
Our new Central London MAX-DOAS detects aerosol pollution from fires during the July 2022 heatwave
UCL MAX-DOAS
Our new MAX-DOAS up and running on the rooftop of an 11-story building at UCL
Our work on the impact of rocket launches on climate and the ozone layer published in Earth's Future.
Conversation piece (June 2022)
The Conversation piece on the likely health crisis from rapidly developing African cities.
Group photo at IGC10, Washington University of St. Louis, USA
Members of the group at the International GEOS-Chem User's Meeting in St. Louis, Missouri.
Premature deaths in fast-growing tropical cities from exposure to air pollution
Our work on the rise in early deaths from air pollution in fast-growing tropical cities now in Science Advances.
Powership emissions
Our work on greenhouse gas and air pollutant emissions from powerships now in Environ. Sci. Adv.
Conversation piece (November 2021)
The Conversation piece on the substantial global public health benefits of net-zero energy
Rebekah (Bex) Horner joins the group to pursue a PhD
Rebekah (Bex) Horner joins the group to start a PhD on reactive nitrogen in the global troposphere
Channel 4 News interview
Eloise speaks to Channel 4 News on the need to regulate the space tourism industry
Image of NH3 emissions
Our work on satellite-derived UK ammonia emissions published in the J. Geophys. Res.
Image of prevalent sources of VOCs
Our work on global observations of upper tropospheric NO2 from TROPOMI published in AMT
Premature mortality in Europe due to fossil fuel air pollution
Our work on substantial global mortality from fossil fuel air pollution published in Environ. Res.