Fine Scale Modeling of Ozone Exposure Estimates using a Source Sensitivity Approach Cesunica E. Ivey, Lucas Henneman, Cong Liu, Yongtao T. Hu, Armistead.

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Presentation transcript:

Fine Scale Modeling of Ozone Exposure Estimates using a Source Sensitivity Approach Cesunica E. Ivey, Lucas Henneman, Cong Liu, Yongtao T. Hu, Armistead G. Russell Tuesday October 6, 2015 Fine Scale Modeling and Applications, 9:10 AM 14 th Annual CMAS Conference Chapel Hill, NC 1

Ozone exposure is associated with respiratory irritation and increased daily mortality. 2 Motivation Source: Li et al., Environmental Science and Pollution Research, 22(11), June 2015 Figure: Percent increase in daily mortality with 10 ug/m3 increase of ozone in Guangzhou, China

3 Related Work We have optimized multi-year 36-km PM 2.5 source impact fields for health studies: , up to 2014 Provides insight on spatial and temporal characteristics of source impacts Spatial Hybrid Optimized Non-Road Diesel Impacts on PM 2.5 July 25, 2006 Ivey et al. (2015), Geophys. Mod. Dev., 8, CMAQ

4 Objectives PM 2.5 Source Impacts (36 km) 1 st Order Source Impacts on Ozone (36 km) 1 st Order Source Impacts on Ozone (4 km) 1. Develop for health studies at the county- level and other local scales. 2. Analyze to understand relationships between ozone and highly stratified source categories. 3. Develop to increase the spatial resolution of ozone data for health studies and mitigation. With the new ozone standard, source interactions become more important for mitigation.

5 Study 1: Modeling Figure: 36 km Domain Episode January 1, 2007 to December 31, 2007 over CONUS Meteorology Emissions WRF ARW v3.3.1Kain-Fritsch cumulus parameterization ACM2 PBL scheme RRTM longwave radiation Pleim-Xiu LSMDudhia shortwave radiation 36-kmMorrison 2-moment microphysics SMOKE v3.1NEI 2008 Platform SAPRC99 speciation16 source categories CMAQ-DDM v5.0.2Aerosol module 6 1 st order DDMSAPRC07tc mechanism

6 Study 1: Results 2007 Monthly-Averaged 8-hr Max Ozone (ppb) JanFebMarApr May JunJulAug Sep OctNov Dec

7 Study 1: Results MayJunJulAug On-road Gas On-road Diesel Coal 2007 Monthly-Averaged 8-hr Max 1 st -order Ozone Sensitivities (ppb)

8 Study 1: Results 2007 Monthly-Averaged 8-hr Max 1 st -order Ozone Sensitivities (ppb) MayJunJulAug Biomass Burning Biogenics Fuel Oil

9 Study 1: Results July 2007 Monthly-Averaged Diurnal Profiles for 8hr-Max Ozone (ppb) Local Time Atlanta (GA), Salt Lake City (UT), and Los Angeles (CA) Total Coal Burning BiogenicsBiomass Burning Fuel Oil Burning

10 Study 2: Modeling Figure: 4 km Domain (green) Episode May 1, 2007 to June 30, 2007 over Southeast Meteorology Emissions WRF ARW v3.3.1Kain-Fritsch cumulus parameterization ACM2 PBL scheme RRTM longwave radiation Pleim-Xiu LSMDudhia shortwave radiation 4-kmMorrison 2-moment microphysics SMOKE v3.1NEI 2008 Platform SAPRC99 speciation16 source categories CMAQ-DDM v5.0.2Aerosol module 6 1 st order DDMSAPRC07tc mechanism

11 Study 2: Preliminary Results Top-leftWind speed at 10 m (m/s) Bottom-leftSkin temperature (K) Bottom-rightPBL height (m) Noon EST17:00 UTC Meteorology for June 1, 2007

12 Study 2: Preliminary Results Top-leftNOx (moles/s) Bottom-leftIsoprene (moles/s) Bottom-rightParticulate matter (g/s) Noon EST17:00 UTC Emissions for June 1, 2007

13 Study 2: Preliminary Results Top-leftO3 concentration (ppb) Bottom-leftO3 sensitivity to agriculture (ppb) Bottom-rightO3 sensitivity to biogenics (ppb) Noon EST17:00 UTC CMAQ Results for May 2, 2007

14 Study 2: Preliminary Results 36 km vs 4km 8-hr Averaged Ozone Concentration (ppb) Atlanta, GA May 1-8, 2007

Fine-scale ozone data are beneficial for health analyses Ozone sensitivity analysis with highly stratified emissions may be beneficial for mitigation efforts Future work: –Complete km simulations –Further explore ozone/PM 2.5 -source relationships over the intermountain west, with an emphasis on wildfires (University of Nevada, Reno) 15 Implications Poster: Lucas Henneman, Evaluation of air pollution sensitivities… Session: Model Evaluation and Analysis

Southeastern Center for Air Pollution and Epidemiology (SCAPE) EPA STAR Graduate Fellowship Program Alfred P. Sloan Foundation 14 th Annual CMAS 16 SCAPE Center Organization Acknowledgements This presentation was made possible in part by USEPA, NASA, and STAR Fellowship Assistance Agreement no. FP It has not been formally reviewed by EPA. Its contents are solely the responsibility of the grantee and do not necessarily represent the official views of the funding sources and those sources do not endorse the purchase of any commercial products or services mentioned in the publication.