Louisa J. Kramer
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View article: Using Narrative to Explain Uncertainty in Climate Change
Using Narrative to Explain Uncertainty in Climate Change Open
This study presents the findings on the use of narrative when communicating complex scientific uncertainties. A growing body of evidence in narrative cognition and communication has shown promise for the use of narrative in science communi…
View article: Processes governing emissions of HONO at a grassland site
Processes governing emissions of HONO at a grassland site Open
Studies have shown that gas-phase nitrous acid (HONO) is a major precursor of hydroxyl (OH) radicals in the boundary layer, which plays an important role in the formation of pollutants such as ozone and secondary aerosol. Despite the many …
View article: A Practical Approach for On-Road Measurements of Brake Wear Particles from a Light-Duty Vehicle
A Practical Approach for On-Road Measurements of Brake Wear Particles from a Light-Duty Vehicle Open
Brake wear particles are generated through frictional contact between the brake disc or brake drum and the brake pads. Some of these particles may be released into the atmosphere, contributing to airborne fine particulate matter (PM2.5). I…
View article: Predicting real-time within-vehicle air pollution exposure with mass-balance and machine learning approaches using on-road and air quality data
Predicting real-time within-vehicle air pollution exposure with mass-balance and machine learning approaches using on-road and air quality data Open
View article: Radical chemistry and ozone production at a UK coastal receptor site
Radical chemistry and ozone production at a UK coastal receptor site Open
OH, HO2, total and partially speciated RO2, and OH reactivity (kOH′) were measured during the July 2015 ICOZA (Integrated Chemistry of OZone in the Atmosphere) project that took place at a coastal site in north Norfolk, UK. Maximum measure…
View article: Impact of HO <sub>2</sub> aerosol uptake on radical levels and O <sub>3</sub> production during summertime in Beijing
Impact of HO <sub>2</sub> aerosol uptake on radical levels and O <sub>3</sub> production during summertime in Beijing Open
The impact of heterogeneous uptake of HO2 on aerosol surfaces on radical concentrations and the O3 production regime in Beijing in summertime was investigated. The uptake coefficient of HO2 onto aerosol surfaces, γHO2, was calculated for t…
View article: Comment on acp-2022-800
Comment on acp-2022-800 Open
Abstract. The impact of heterogeneous uptake of HO2 onto aerosol surfaces on radical concentrations and the O3 production regime in Beijing summertime was investigated. The uptake coefficient of HO
View article: Comment on acp-2022-800
Comment on acp-2022-800 Open
The impact of heterogeneous uptake of HO2 onto aerosol surfaces on radical concentrations and the O3 production regime in Beijing summertime was investigated. The uptake coefficient of HO2 onto aerosol surfaces, γHO2, was calculated for th…
View article: Impact of HO <sub>2</sub> aerosol uptake on radical levels and O <sub>3</sub> production during summertime in Beijing
Impact of HO <sub>2</sub> aerosol uptake on radical levels and O <sub>3</sub> production during summertime in Beijing Open
The impact of heterogeneous uptake of HO2 onto aerosol surfaces on radical concentrations and the O3 production regime in Beijing summertime was investigated. The uptake coefficient of HO2 onto aerosol surfaces, γHO2, was calculated for th…
View article: Supplementary material to "Impact of HO <sub>2</sub> aerosol uptake on radical levels and O <sub>3</sub> production during summertime in Beijing"
Supplementary material to "Impact of HO <sub>2</sub> aerosol uptake on radical levels and O <sub>3</sub> production during summertime in Beijing" Open
View article: Comment on acp-2022-213
Comment on acp-2022-213 Open
In our companion paper (Woodward-Massey et al., 2022), we presented measurements of radical species and OH reactivity (k ’OH) made in summer 2015 during the ICOZA (Integrated Chemistry of OZone in the Atmosphere) field campaign at the Weyb…
View article: Radical chemistry at a UK coastal receptor site – Part 2: experimental radical budgets and ozone production
Radical chemistry at a UK coastal receptor site – Part 2: experimental radical budgets and ozone production Open
In our companion paper (Woodward-Massey et al., 2022), we presented measurements of radical species and OH reactivity (k ’OH) made in summer 2015 during the ICOZA (Integrated Chemistry of OZone in the Atmosphere) field campaign at the Weyb…
View article: Is the ocean surface a source of nitrous acid (HONO) in the marine boundary layer?
Is the ocean surface a source of nitrous acid (HONO) in the marine boundary layer? Open
Nitrous acid, HONO, is a key net photolytic precursor to OH radicals in the atmospheric boundary layer. As OH is the dominant atmospheric oxidant, driving the removal of many primary pollutants and the formation of secondary species, a qua…
View article: Comment on acp-2021-532
Comment on acp-2021-532 Open
Abstract. Nitrous acid, HONO, is a key net photolytic precursor to OH radicals in the atmospheric boundary layer. As OH is the dominant atmospheric oxidant, driving the removal of man…
View article: Supplementary material to "Is the ocean surface a source of nitrous acid (HONO) in the marine boundary layer?"
Supplementary material to "Is the ocean surface a source of nitrous acid (HONO) in the marine boundary layer?" Open
View article: Is the ocean surface a source of nitrous acid (HONO) in the marine boundary layer?
Is the ocean surface a source of nitrous acid (HONO) in the marine boundary layer? Open
Nitrous acid, HONO, is a key net photolytic precursor to OH radicals in the atmospheric boundary later. As OH is the dominant atmospheric oxidant, driving the removal of many primary pollutants and the formation of secondary species, a qua…
View article: Long-term trends in air quality in major cities in the UK and India: a view from space
Long-term trends in air quality in major cities in the UK and India: a view from space Open
Air quality networks in cities can be costly and inconsistent and typically monitor a few pollutants. Space-based instruments provide global coverage spanning more than a decade to determine trends in air quality, augmenting surface networ…
View article: Observations of speciated isoprene nitrates in Beijing: implications for isoprene chemistry
Observations of speciated isoprene nitrates in Beijing: implications for isoprene chemistry Open
Isoprene is the most important biogenic volatile organic compound in the atmosphere. Its calculated impact on ozone (O3) is critically dependent on the model isoprene oxidation chemical scheme, in particular the way the isoprene-derived or…
View article: Evaluating the sensitivity of radical chemistry and ozone formation to ambient VOCs and NO <sub> <i>x</i> </sub> in Beijing
Evaluating the sensitivity of radical chemistry and ozone formation to ambient VOCs and NO <sub> <i>x</i> </sub> in Beijing Open
Measurements of OH, HO2, complex RO2 (alkene- and aromatic-related RO2) and total RO2 radicals taken during the integrated Study of AIR Pollution PROcesses in Beijing (AIRPRO) campaign in central Beijing in the summer of 2017, alongside ob…
View article: Elevated levels of OH observed in haze events during wintertime in central Beijing
Elevated levels of OH observed in haze events during wintertime in central Beijing Open
Wintertime in situ measurements of OH, HO2 and RO2 radicals and OH reactivity were made in central Beijing during November and December 2016. Exceptionally elevated NO was observed on occasions, up to ∼250 ppbv. The daily maximum mixing ra…
View article: Interference from alkenes in chemiluminescent NO <sub> <i>x</i> </sub> measurements
Interference from alkenes in chemiluminescent NO <sub> <i>x</i> </sub> measurements Open
Nitrogen oxides (NOx=NO+NO2) are critical intermediates in atmospheric chemistry and air pollution. NOx levels control the cycling and hence abundance of the primary atmospheric oxidants OH and NO3 and regulate the ozone production which r…
View article: Insights into air pollution chemistry and sulphate formation from nitrous acid (HONO) measurements during haze events in Beijing
Insights into air pollution chemistry and sulphate formation from nitrous acid (HONO) measurements during haze events in Beijing Open
We integrate observations of gas phase species and time-resolved aerosol composition to explore observational constraints on the mechanisms responsible for sulphate growth during the onset of haze events in Beijing.
View article: Evaluating the sensitivity of radical chemistry and ozone formation toambient VOCs and NO <sub>x</sub> in Beijing
Evaluating the sensitivity of radical chemistry and ozone formation toambient VOCs and NO <sub>x</sub> in Beijing Open
Measurements of OH, HO2, RO2-complex (alkene and aromatic-related RO2) and total RO2 radicals taken during the AIRPRO campaign in central Beijing in the summer of 2017, alongside observations of OH reactivity are presented. The concentrati…
View article: Long-term trends in air quality in major cities in the UK and India: A view from space
Long-term trends in air quality in major cities in the UK and India: A view from space Open
Air quality networks in cities are costly, inconsistent, and only monitor a few pollutants. Space-based instruments provide global coverage spanning more than a decade to determine trends in air quality and address deficiencies in surface …
View article: Interference from alkenes in chemiluminescent NO <sub> <i>x</i> </sub> measurements
Interference from alkenes in chemiluminescent NO <sub> <i>x</i> </sub> measurements Open
Nitrogen oxides (NOx = NO + NO2) are critical intermediates in atmospheric chemistry. NOx levels control the cycling and hence abundance of the primary atmospheric oxidants OH and NO3, and regulate the ozone production which results from t…
View article: Supplementary material to "Interference from alkenes in chemiluminescent NO <sub> <i>x</i> </sub> measurements"
Supplementary material to "Interference from alkenes in chemiluminescent NO <sub> <i>x</i> </sub> measurements" Open
View article: Elevated levels of OH observed in haze events during wintertime in central Beijing
Elevated levels of OH observed in haze events during wintertime in central Beijing Open
Wintertime in situ measurements of OH, HO2 and RO2 radicals and OH reactivity were made in central Beijing during November and December 2016. Exceptionally elevated NO was observed on occasions, up to ~ 250 ppbv, believed to be the highest…
View article: Supplementary material to "Elevated levels of OH observed in haze events during wintertime in central Beijing"
Supplementary material to "Elevated levels of OH observed in haze events during wintertime in central Beijing" Open
Elevated levels of OH observed in haze events during wintertime in central Beijing Supplementary InformationThe MCM-base model, which uses a deposition rate of 0.1/MH, has been run again using several different deposition rates for the mod…
View article: Nitrous acid (HONO) emissions under real-world driving conditions from vehicles in a UK road tunnel
Nitrous acid (HONO) emissions under real-world driving conditions from vehicles in a UK road tunnel Open
Measurements of atmospheric boundary layer nitrous acid (HONO) and nitrogen oxides (NOx) were performed in summer 2016 inside a city centre road tunnel in Birmingham, United Kingdom. HONO and NOx mixing ratios were strongly correlated with…
View article: An instrument for in situ measurement of total ozone reactivity
An instrument for in situ measurement of total ozone reactivity Open
We present an instrument for the measurement of total ozone reactivity – the reciprocal of the chemical lifetime of ozone (O3) – in the troposphere. The Total Ozone Reactivity System (TORS) was developed with the objective to study the rol…