Research

Active Research

High resolution atmospheric chemistry modelling - see a recent post
Impact of the COP26 Global Methane Pledge - with colleagues at Met Office Hadley Centre
TerraFIRMA: Future Impacts, Risks and Mitigation Actions in a changing Earth system - WP2 co-lead
RAMIP (starting 2024)

TOAR ML4O3 Machine learning paper TOAR ROSTEES ‘Role of the stratosphere in tropospheric ozone’ assessment paper

Short-term forecasting of ozone air pollution across Europe with transformers. DOI:10.1017/eds.2023.37
The regional aerosol model intercomparison project (RAMIP). DOI:10.5194/gmd-16-4451-2023
Atmospheric composition and climate impacts of a future hydrogen economy. DOI:10.5194/acp-23-13451-2023

The role of future anthropogenic methane emissions in air quality and climate. DOI:10.1038/s41612-022-00247-5
Description and Evaluation of an Emission-Driven and Fully Coupled Methane Cycle in UKESM1. DOI:10.1029/2021MS002982 (evaluation of OH, CH4 and CO model performance)
Attribution of stratospheric and tropospheric ozone changes between 1850 and 2014 in CMIP6 models. 10.1029/2022JD036452 (histSST-piCH4 and -piO3 experiments)

The role of natural halogens in global tropospheric ozone chemistry and budget under different 21st century climate scenarios (comparison with tropospheric ozone burdens in CMIP6 models) DOI:10.1029/2021JD034859
Tropospheric ozone in CMIP6 models (co-lead) DOI:10.5194/acp-21-4187-2021 - final version featured an extended look at STE (https://github.com/paultgriffiths/Tropospheric-ozone-in-CMIP6-simulations_data_analysis/tree/main/STE)
Ascorbate oxidation by iron, copper and reactive oxygen species: review, model development, and derivation of key rate constants (early-stages development of box model). DOI:10.1038/s41598-021-86477-8
Opinion: The Germicidal Effect of Ambient Air (Open Air Factor) Revisited (early data analysis). DOI:10.5194/acp-2021-375
Climate Change 2021. The Physical Science Basis. Chapter 6 “Short-lived climate forcers” Contributing Author
The Impacts of Aerosol Emissions on Historical Climate in UKESM1. DOI: 10.3390/atmos11101095 (histSST-piCH4 and -piO3 experiments)

Methane mitigation: methods to reduce emissions, on the path to the Paris Agreement (box modelling of future methane pathways). DOI:10.1029/2019RG000675
Trends in global tropospheric hydroxyl radical and methane lifetime since 1850 from AerChemMIP (I led the UKESM-1 histSST-piCH4 and histSST-piO3 AerChemMIP integrations for the UKESM-1 team, and these were used in this paper) DOI:10.5194/acp-2019-1219
Assessment of pre-industrial to present-day anthropogenic climate forcing in UKESM1 (Together with James Keeble, contributed to the analysis for the ozone/OH/aerosol coupling in parts of section 4.4) DOI:10.5194/acp-2019-1152

Modelling the potential impacts of the recent, unexpected increase in CFC-11 emissions on total column ozone recovery (box modelling). DOI:10.5194/acp-2019-747
Description and evaluation of the UKCA stratosphere-troposphere chemistry scheme (StratTrop vn 1.0) implemented in UKESM1 (some analysis e.g. Lawrence plots). DOI:10.5194/gmd-2019-246
Influence of Sea Ice-Derived Halogens on Atmospheric HOx as Observed in Springtime Coastal Antarctica -(box modelling of BrO levels using BOXMOX). DOI:10.1029/2019GL083825
UKESM1: Description and Evaluation of the U.K. Earth System Model (some analysis, e.g. ozone analysis). DOI:/10.1029/2019MS001739
Measuring Aerosol Phase Changes and Hygroscopicity with a Microresonator Mass Sensor. DOI:10.1021/acs.analchem.8b00114

Comprehensive modeling study of ozonolysis of oleic acid aerosol based on real‐time, online measurements of aerosol composition (contributed the aerosol box modelling). DOI:10.1002/2016JD026221