Ruth Doherty
A5036198087- Atmospheric chemistry and aerosols
- Air Quality and Health Impacts
- Atmospheric Ozone and Climate
- Atmospheric and Environmental Gas Dynamics
- Climate Change and Health Impacts
- Climate variability and models
- Air Quality Monitoring and Forecasting
- Dental Education, Practice, Research
- Global Health Care Issues
- Vehicle emissions and performance
- Crystallization and Solubility Studies
- Climate change impacts on agriculture
- X-ray Diffraction in Crystallography
- Fire effects on ecosystems
- Atmospheric aerosols and clouds
- Meteorological Phenomena and Simulations
- Plant Water Relations and Carbon Dynamics
- Noise Effects and Management
- Health disparities and outcomes
- Tropical and Extratropical Cyclones Research
- Soil Carbon and Nitrogen Dynamics
- Dental Health and Care Utilization
- Plant responses to elevated CO2
- Soil and Water Nutrient Dynamics
- Rural development and sustainability
University of Edinburgh
2015-2024
Peter MacCallum Cancer Centre
2024
RELX Group (Netherlands)
2015
Centre de Géosciences
2012
Lawrence Livermore National Laboratory
2012
British Dental Association
2012
Aquamarine Power (United Kingdom)
2010
Scottish Alliance for Geoscience, Environment and Society
2010
National Centre for Atmospheric Science
2008
International Institute for Applied Systems Analysis
2006
We use 23 atmospheric chemistry transport models to calculate current and future (2030) deposition of reactive nitrogen (NO y , NH x ) sulfate (SO land ocean surfaces. The are driven by three emission scenarios: (1) air quality legislation (CLE); (2) an optimistic case the maximum emissions reductions currently technologically feasible (MFR); (3) contrasting pessimistic IPCC SRES A2 scenario. An extensive evaluation present‐day using nearly all information on wet available worldwide shows a...
CR Climate Research Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsSpecials 17:145-168 (2001) - doi:10.3354/cr017145 African climate change: 1900-2100 Mike Hulme1,*, Ruth Doherty3, Todd Ngara4, Mark New5, David Lister2 1Tyndall Centre for Change and 2Climatic Unit, School of Environmental Sciences, University East Anglia, Norwich NR4 7TJ, United Kingdom 3Environmental Societal Impacts Group, NCAR,...
<strong class="journal-contentHeaderColor">Abstract.</strong> Present day tropospheric ozone and its changes between 1850 2100 are considered, analysing 15 global models that participated in the Atmospheric Chemistry Climate Model Intercomparison Project (ACCMIP). The ensemble mean compares well against present observations. seasonal cycle correlates well, except for some locations tropical upper troposphere. Most (75 %) of encompassed with a range column estimates from satellite data, but...
Understanding the surface O 3 response over a “receptor” region to emission changes foreign “source” is key evaluating potential gains from an international approach abate ozone (O ) pollution. We apply ensemble of 21 global and hemispheric chemical transport models estimate spatial average east Asia (EA), Europe (EU), North America (NA), south (SA) 20% decreases in anthropogenic emissions precursors, NO x , NMVOC, CO (individually combined), each these regions. find that mean concentrations...
Abstract. We examine the response of Arctic gas and aerosol concentrations to perturbations in pollutant emissions from Europe, East South Asia, North America using results a coordinated model intercomparison. These sensitivities regional (mixing ratio change per unit emission) vary widely across models species. Intermodel differences are systematic, however, so that relative importance different regions is robust. contributes most ozone pollution. For aerosols CO, European dominate at...
Abstract. The Atmospheric Chemistry and Climate Model Intercomparison Project (ACCMIP) consists of a series time slice experiments targeting the long-term changes in atmospheric composition between 1850 2100, with goal documenting associated radiative forcing. In this overview paper, we introduce ACCMIP activity, various simulations performed (with requested set 14) model output. 16 models have wide range horizontal vertical resolutions, extent, chemistry schemes interaction radiation...
Abstract. Ozone (O3) from 17 atmospheric chemistry models taking part in the Atmospheric Chemistry and Climate Model Intercomparison Project (ACCMIP) has been used to calculate tropospheric ozone radiative forcings (RFs). All applied a common set of anthropogenic emissions, which are better constrained for present-day than past. Future emissions follow four Representative Concentration Pathway (RCP) scenarios, define relatively narrow range possible air pollution emissions. We value...
This study quantifies the present-day global and regional distributions (2010–2014) trends (2000–2014) for five ozone metrics relevant short-term long-term human exposure. These metrics, calculated by Tropospheric Ozone Assessment Report, are: 4th highest daily maximum 8-hour (4MDA8); number of days with MDA8 &gt; 70 ppb (NDGT70), SOMO35 (annual Sum Means Over 35 ppb) two seasonally averaged (3MMDA1; AVGMDA8). were explored at monitoring sites worldwide, which classified as urban or...
The goal of the Tropospheric Ozone Assessment Report (TOAR) is to provide research community with an up-to-date scientific assessment tropospheric ozone, from surface tropopause. While a suite observations provides significant information on spatial and temporal distribution observational gaps make it necessary use global atmospheric chemistry models synthesize our understanding processes variables that control ozone abundance its variability. Models facilitate interpretation allow us...
Abstract. We have analysed time-slice simulations from 17 global models, participating in the Atmospheric Chemistry and Climate Model Intercomparison Project (ACCMIP), to explore changes present-day (2000) hydroxyl radical (OH) concentration methane (CH4) lifetime relative preindustrial times (1850) 1980. A comparison of modeled observation-derived methyl chloroform lifetimes suggests that multi-model mean OH is overestimated by 5 10% but within range uncertainties. The models consistently...
Abstract. We present multi-model global datasets of nitrogen and sulfate deposition covering time periods from 1850 to 2100, calculated within the Atmospheric Chemistry Climate Model Intercomparison Project (ACCMIP). The computed fluxes are compared surface wet ice core measurements. use a new dataset for 2000–2002 based on critical assessment quality existing regional network data. show that day (year 2000 ACCMIP slice), results perform similarly previously published assessments. For this...
Air quality, ecosystem exposure to nitrogen deposition, and climate change are intimately coupled problems: we assess changes in the global atmospheric environment between 2000 2030 using 26 state-of-the-art chemistry models three different emissions scenarios. The first (CLE) scenario reflects implementation of current air quality legislation around world, while second (MFR) represents a more optimistic case which all currently feasible technologies applied achieve maximum emission...
Abstract. Results from simulations performed for the Atmospheric Chemistry and Climate Modeling Intercomparison Project (ACCMIP) are analysed to examine how OH methane lifetime may change present day future, under different climate emissions scenarios. Present (2000) mean tropospheric chemical derived ACCMIP multi-model is 9.8 ± 1.6 yr (9.3 0.9 when only including selected models), lower than a recent observationally-based estimate, but with similar range previous estimates. Future model...
We analyze present‐day and future carbon monoxide (CO) simulations in 26 state‐of‐the‐art atmospheric chemistry models run to study air quality climate change. In comparison with near‐global satellite observations from the MOPITT instrument local surface measurements, show large underestimates of Northern Hemisphere (NH) extratropical CO, while typically performing reasonably well elsewhere. The results suggest that year‐round emissions, probably fossil fuel burning east Asia seasonal...
Asthma is the most prevalent chronic respiratory disease worldwide, affecting 358 million people in 2015. Ambient air pollution exacerbates asthma among populations around world and may also contribute to new-onset asthma.We aimed estimate number of emergency room visits new onset cases globally attributable fine particulate matter ([Formula: see text]), ozone, nitrogen dioxide text]) concentrations.We used epidemiological health impact functions combined with data describing population,...
Abstract The impact of climate change between 2000 and 2095 SRES A2 climates on surface ozone (O) 3 O source‐receptor (S‐R) relationships is quantified using three coupled climate‐chemistry models (CCMs). CCMs exhibit considerable variability in the spatial extent location increases that occur within parts high NO x emission source regions (up to 6 ppbv annual average up 14 season maximum ). In these regions, all show a positive relationship temperature change. Sensitivity simulations...
Abstract. The EMEP4UK modelling system is a high resolution (5×5 km2) application of the EMEP chemistry-transport model, designed for scientific and policy studies in UK. We demonstrate use performance through study ground-level ozone (O3) during extreme August 2003 heat-wave. Meteorology generated by Weather Research Forecast (WRF) nudged every six hours with reanalysis data. focus on SE England, where hourly average O3 reached up to 140 ppb accurately reproduces elevated much its...
A chemistry‐climate model has been applied to study the radiative forcings generated by aircraft NO x emissions through changes in ozone and methane. Four numerical experiments, where an extra pulse of was emitted into atmosphere for a single month (January, April, July, or October), were compared control experiment, allowing impact be isolated. The produces short‐lived (few months) that generates positive forcing. However, O 3 both generate OH, which leads reduction CH 4 . detailed analysis...
Abstract. The global secondary organic aerosol (SOA) budget is highly uncertain, with annual SOA production rates, estimated from models, ranging over an order of magnitude and simulated concentrations underestimated compared to observations. In this study, we use a composition-climate model (UKCA) interactive chemistry microphysics provide in-depth analysis the impact each VOC source on its seasonality. We further quantify role spatial distributions, evaluate seasonal against comprehensive...
Ambient air pollution from ground-level ozone and fine particulate matter (PM2.5) is associated with premature mortality. Future concentrations of these pollutants will be driven by natural anthropogenic emissions climate change. Using biomass burning projected in the four Representative Concentration Pathway scenarios (RCPs), ACCMIP ensemble chemistry-climate models simulated future PM2.5 at selected decades between 2000 2100. We use output ensemble, together projections population baseline...
Abstract. The Atmospheric Pollution and Human Health in a Chinese Megacity (APHH-Beijing) programme is an international collaborative project focusing on understanding the sources, processes health effects of air pollution Beijing megacity. APHH-Beijing brings together leading China UK research groups, state-of-the-art infrastructure quality models to work four themes: (1) sources emissions pollutants; (2) atmospheric affecting urban pollution; (3) exposure impacts; (4) interventions...
Abstract. Surface concentrations of secondary inorganic particle components over the UK have been analysed for 2001–2010 using EMEP4UK regional atmospheric chemistry transport model and evaluated against measurements. Gas/particle partitioning in simulations used a bulk approach, which may lead to uncertainties simulated aerosol. However, were able accurately represent both long-term decadal surface sulfate nitrate an episode early 2003 substantially elevated measured across by AGANet...