Transboundary Modelling of Particulate Matter with REMOTE- Saji Varghese, NUIG

Presentation from EPA Transboundary Research Workshop, Galway, 8th and 9th September 2010.

Technologie

Transboundary Modelling of Particulate Matter with REMOTE Saji Varghese Centre for Climate and Air Pollution Studies and School of Physics, National University of Ireland, Galway

Motivation Impact on human health Aerosols contribute to climate change Tool for researchers and policy-makers Different models ,[object Object]

Regional climate models (RCMs) coupled with aerosol dynamics and chemistry,[object Object]

Microphysical aerosol module M7 Vignati et al., JGR (2004), Stier et al., ACP (2005) - aerosol size distribution in 7 log-normal modes ,[object Object],Sulfate Black Carbon Organic Carbon Sea salt Mineral dust

RADM2 chemistry 163 reactions, 63 species (Stockwell et al., 1990) Stiff ODE’s describe the gas phase chemistry and uses operator splitting approach Model Set-up ,[object Object]

Domain - Western Europe and North East Atlantic

Emission - EMEP and organic-inorganic source function

Chlorophyll data - MODIS satellite ,[object Object]

Secondary Organic Aerosol (SOA) in the Marine Environment (Antilla et al., 2010) Isoprene source function Isoprene concentration in sea water is proportional to chlorophyll-a concentration (Meskhidze and Nenes, 2006) Isoprene flux =product of isoprene concentration and gas exchange coefficient (Palmer and Shaw, 2005) isoprene oxidation products as major SOA precursors SOA formation based on Henry’s law

SOA: Six additional components in M7 - isoprene oxidation products as SOA precursors - SOA formation based on Henry’s law

Ozone Concentration-sensitivity to deposition schemes (Coleman et al., 2010) ,[object Object],[object Object]

Eyjafyalla volcano eruption April-May 2010 disruption to air-traffic Economic losses to airlines, insurance companies, logistics operations, tourism industry Initial forecasts from VAAC – using NAME model - 4mg/m3 limit - 2mg/m3 limit - Forecasting with REMOTE – an additional tool - air-quality

Development of volcanic ash forecasting system boundary data preparation from ECMWF forecast data and analysis model development and source term parameterisation volcano source data gathering and assimilation comparison with other dispersion models continual refinement of the model for improving forecasts forecasts issued twice daily automation

Key input parameters and associated uncertainties for models Source term (key eruption parameters) Mass flux vertical distribution of mass column height particle size distribution density

Sample 4-day forecast Spatial distribution of volcanic ash (mg/m2) Horizontal resolution: 0.5o(~50 km), 81x91 grid points Vertical levels : 19 Time step: 5 min Boundary data: ECMWF forecast Emission source: Iceland Met office

Comparison of REMOTE model output with NAME results

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13. The BRIDE project: working for multiple benefits - Donal Sheehan, BRIDE P...

12. Working with local communities to protect the Maigue - Tom Harrington, Ma...

On 17 and 18 June 2020 the EPA held its National Water Event as an online conference. This presentation was by Con McLaughlin, Donegal County Council and Andy Griggs, Armagh City, Banbridge and Craigavon District Council. This year's theme was 'Restoring our waters'. This years event was free to attend. It was the EPA's largest water event ever, with over 1250 attending. To everyone who joined us: thanks for attending; thanks for your probing questions; thanks for your passion; thanks for caring about our waters. We can achieve more working together. Special thanks to all our presenters and the team who worked behind the scenes to make sure this years conference happened. For science and stories about water quality in Ireland, check out www.catchments.ie

11. CatchmentCARE: improving water quality in cross-border catchments - Con M...

10. Restoring the River Camac - Mary-Liz Walshe, DCC