Articles

The following peer reviewed (published or in press) journal articles were research funded (all or in part) by the Ozone Research Center. The link will take you to the abstract (where available) or to the journal's home page. If you have a personal journal subscription or are using the server of a university or an organization that maintains subscriptions to on-line journals, you may also be able to view the full text article. To obtain a printed copy of any of these articles, please contact us.

• Georgopoulos P.G., Wang S.W., Vyas V.M., Sun Q., Burke J., Vedantham R., McCurdy T. and Ozkaynak H. (2005). A source-to-dose assessment of population exposures to fine PM and ozone in Philadelphia, PA, during a summer 1999 episode. Journal of Exposure Analysis and Environmental Epidemiology 15(5): 439-457.
• Wang S.W., Balakrishnan S. and Georgopoulos P.G. (2005). Fast equivalent operational model of tropospheric alkane photochemistry. American Institute of Chemical Engineers Journal 51(4): 1297-1303.
• Lazaridis M., Spyridaki A., Solberg S., Smolik J., Zdimal V., Eleftheriadis K., Aleksaropoulou V., Hov O. and Georgopoulos P.G. (2005). Mesoscale modeling of combined aerosol and photo-oxidant processes in the Eastern Mediterranean. Atmospheric Chemistry and Physics 5: 927-940.
• Wolff M.S., Teitelbaum S.L., Lioy P.J., Santella R.M., Wang R.Y., Jones R.L., Caldwell K.L., Sjodin A., Turner W.E., Li W., Georgopoulos P. and Berkowitz G.S. (2005). Exposures among pregnant women near the World Trade Center site on 11 September 2001. Environmental Health Perspectives 113(6): 739-48.
• Chandrasekar A., Philbrick C.R., Doddridge B., Clark R. and Georgopoulos P.G. (2004). A comparative study of prognostic MM5 meteorological model with aircraft, wind profiler, lidar, tethered balloon and RASS data over Philadelphia during a 1999 summer episode. Environmental Fluid Mechanics 4: 339-365.
  • An appendix to this article containing additional tables and figures is also available - contact us for a reprint.
• Huber A., Georgopoulos P., Gilliam R., Stenchikov G., Wang S.-W., Kelly B. and Feingersh H. (2004). Modeling air pollution from the collapse of the World Trade Center and assessing the potential impacts on human exposures. Environmental Manager February 2004: 35-40
• Foley G., Georgopoulos P.G. and Lioy P.J. (2003). Examining accountability for changes in population exposures to 8-hour ozone standard with implementation of different control strategies. Environmental Science and Technology 37(21): 302A-309A.
• Chandrasekar A., Philbrick C.R., Clark R., Doddridge B. and Georgopoulos P.G. (2003). A large-eddy simulation study of the convective boundary layer over Philadelphia during the 1999 summer NE-OPS campaign. Environmental Fluid Mechanics 3(4): 305-329.
• Chandrasekar A., Philbrick C.R., Doddridge B., Clark R. and Georgopoulos P.G. (2003). A comparison study of RAMS simulations with aircraft, wind profiler, lidar, tethered balloon and RASS data over Philadelphia during a 1999 summer episode. Atmospheric Environment 37: 4973-4984.
  • An appendix to this article containing additional tables and figures is also available - contact us for a reprint.
• Chandrasekar A., Philbrick C.R., Clark R., Doddridge B. and Georgopoulos P.G. (2003). Evaluating the performance of a computationally efficient MM5/CALMET system for developing meteorological inputs to air quality models. Atmospheric Environment 37(23): 3267-3276.
• Wang S.W., Georgopoulos P.G., Li G. and Rabitz H. (2003). Random Sampling-High Dimensional Model Representation (RS-HDMR) with nonuniformly distributed variables: Application to an integrated multimedia/multipathway exposure and dose model for trichloroethylene. Journal of Physical Chemistry A 107: 4707-4716.
• Li G., Artamonov M., Rabitz H., Wang S.W., Georgopoulos P.G. and Demiralp M. (2003). High dimensional model representations generated from low order terms - 1p-RS-HDMR. Journal of Computational Chemistry 24: 647-656.
• Li G., Rabitz H., Wang S.W. and Georgopoulos P.G. (2003). Correlation method for variance reduction of Monte Carlo integration in RS-HDMR. Journal of Computational Chemistry 24: 277-283.
• Balakrishnan S., Banerjee I., Georgopoulos P.G. and Ierapetritou M. (2002). Uncertainty considerations in the description of complex reaction systems. American Institute of Chemical Engineers Journal 48(12): 2875-2889.
• Weisel C., Cody R., Georgopoulos P., Purushothaman V., Weiss S., Bielory L., Gregory P. and Stern A. (2002). Concepts in developing health-based indicators for ozone. International Archives of Occupational and Environmental Health 75(6): 415-422.
• Lazaridis M., Broday D., Hov O. and Georgopoulos P.G. (2001). Integrated exposure and dose modeling and analysis system. 3. Deposition of inhaled particles in the human respiratory tract. Environmental Science and Technology 35: 3727-3734.
• Broday D. and Georgopoulos P.G. (2001). Growth and deposition of hygroscopic particulate matter in the human lung. Aerosol Science and Technology 34: 144-159.
• Isukapalli S., Roy A. and Georgopoulos P.G. (2000). Efficient sensitivity/uncertainty analysis using the combined stochastic response surface method (SRSM) and automatic differentiation for FORTRAN code (ADIFOR): Application to environmental and biological systems. Risk Analysis 20: 591-602.
• Kevrekidis P., Lazaridis M., Drossinos Y. and Georgopoulos P.G. (1999). A unified kinetic approach to binary nucleation. Journal of Chemical Physics 111: 8010-8012.
• Wang S.W., Georgopoulos P.G., Li G. and Rabitz H. (1998). Condensing complex atmospheric chemistry mechanisms - 1: The direct constrained approximate lumping (DCAL) method applied to alkane photochemistry. Environmental Science and Technology 32: 2018-2024.
• Isukapalli S., Roy A. and Georgopoulos P.G. (1998) Stochastic response surface methods (SRSM) for uncertainty characterization and propagation: Application to environmental and biological systems. Risk Analysis, 18, 351-363
• Georgopoulos P.G., Arunachalam S. and Wang S. (1997). Alternative metrics for assessing the relative effectiveness of NOx and VOC emission reductions in controlling ground-level ozone. Journal of the Air and Waste Management Association 47(8): 837-850.
• Georgopoulos P.G., Purushothaman V. and Chiou R. (1997) Comparative evaluation of methods for estimating potential human exposure to pzone: Photochemical modeling and ambient monitoring. Journal of Exposure Analysis and Environmental Epidemiology, 7, 191-215
• Georgopoulos P.G., Walia A., Roy A. and Lioy P.J. (1997). An integrated exposure and dose modeling and analysis system. 1. Formulation and testing of microenvironmental and pharmacokinetic components. Environmental Science and Technology 31(1): 17-27.
• Georgopoulos P.G. (1995). Regulatory ozone modeling: Status, directions and research needs. Environmental Health Perspectives 103(Supplement 2): 107-132.

Reports

A selection of the Ozone Research Center's Technical Reports and Memoranda is listed below. The links to some of the reports provide access to Adobe Acrobat PDF versions. (If you don't have Acrobat Reader, get the most recent up-to-date free software here.) For copies of DRAFT reports, please contact us.

• Summary of O3, PM10 and PMLC2.5 Air Quality Trends in New Jersey 1986-2003 Technical Memorandum ORC:2004-04 (Li and Georgopoulos, 2004)
• A Source-to-Dose Assessment of Population Exposures to Fine PM, Ozone and Air Toxics in Philadelphia, PA, During a 1999 Summer Episode. A Case Study Employing MENTOR/SHEDS-1A (Georgopoulos, Wang, Vyas, Sun, Chandrasekar, Shade, Vedantham, Burke, McCurdy, Özkaynak, 2004)
• Study of the Effectiveness of VOC and NOx Emission Reductions in Reducing Ambient Ozone Concentrations and Potential Population Exposures in the Northeastern/Mid-Atlantic U.S. Technical Memorandum ORC:2003-01 (Sun, Vyas, Georgopoulos, 2003)
• Evaluation of Models-3/CMAQ with AIRS and NE-OPS Data for a 1999 Summer Episode with Focus on New Jersey and the Philadelphia Area. Technical Report ORC:2002-01 (Sun, Chandrasekar, Georgopoulos, Philbrick, Doddridge, 2002)
• Comparative Evaluation of the Performance of the CB4 and RADM2 Chemical Mechanisms in Models-3/CMAQ with Focus on the Prediction of Ozone and PM2.5 Levels in New Jersey and the Philadelphia Area. Technical Report ORC:2002-02 (Sun and Georgopoulos, 2002)
• Mechanisms Controlling the Outdoor/Indoor Relationships of Fine Particle Levels and Characteristics (Georgopoulos, Jayjock, Sun, Isukapalli, Kevrekidis, Lazaridis, Drossinos, 2002)
• Computational Methods for Sensitivity and Uncertainty Analysis for Environmental and Biological Models (S.S. Isukapalli and P.G. Georgopoulos, 2001)
• Evaluation of Regional Emissions Control Strategies for Ozone Utilizing Population Exposure Metrics: A New GIS-Based Approach Applied to the July 1995 Episode Over the OTAG Domain (Purushothaman and Georgopoulos, 1999)
• Integrating Photochemical Modeling, Geostatistical Techniques and Geographic Information Systems for Ozone Exposure Assessment (Purushothaman and Georgopoulos, 1999)
• Computational Methods for the Efficient Sensitivity and Uncertainty Analysis of Models for Environmental and Biological Systems (Isukapalli and Georgopoulos, 1999) - On-Line Modeling Tool
• Geographic Information System Tools for Improving Atmospheric Emission Inventories of Mobile and Biogenic Sources (Shin and Georgopoulos, 1998)
• Observational and Mechanistic Studies of Tropospheric Ozone/Precursor Relationships (Wang and Georgopoulos, 1998)
• Photochemical Air Pollution Modeling for Regional Control Strategy Development (Arunachalam and Georgopoulos, 1998)
• Mechanistic Modeling of Transport and Metabolism in Physiological Systems (Roy and Georgopoulos, 1997)
• Microenvironmental Modeling Integrated with Geographic Information Systems for Exposure Analysis (Walia and Georgopoulos, 1997)

Selected Presentations

• ORC Science Workshop 2005: Air Quality, Human Exposure and Emission Controls: "One-Atmosphere" Approach. Piscataway, NJ (December 19, 2005)
• Source-to-Dose Modeling of Long-Term Population Exposures to Co-occurring Reactive and Inert Air Pollutants. ISEA 14th Annual Conference - Exploring Emerging Technologies for Exposure Assessment. Philadelphia, PA. (October 18-21, 2004) (P.G. Georgopoulos, S. Isukapalli, S.W. Wang, N. Lahoti, Y.C. Yang, J. Burke, H. Özkaynak, J. Ching, T. Pierce)
• Comparative Study of Alternative Photochemical Models in Ozone and PM Predictions and their Applications to Population Exposure Assessment. ISEA 14th Annual Conference - Exploring Emerging Technologies for Exposure Assessment. Philadelphia, PA. (October 18-21, 2004) (Q. Sun, N. Lahoti, S.W. Wang, P.G. Georgopoulos)
• Considering People in Assessing the Impact of Ozone, Particulate Matter, and Air Toxics. Ozone Research Center 2003 Annual Science Workshop, Piscataway, NJ (December 17, 2003) (P.G. Georgopoulos)
• Evaluating ozone and PM2.5 predictions from photochemical models using AIRS and NE-OPS 1999 observations. Ozone Research Center 2003 Annual Science Workshop, Piscataway, NJ (December 17, 2003) (Q. Sun, P.G. Georgopoulos)
• Integrated source-to-dose assessments for population exposures to co-occurring ozone, PM, and air toxics: Applications to Philadelphia, PA and Camden, NJ. Ozone Research Center 2003 Annual Science Workshop, Piscataway, NJ (December 17, 2003) (S.W. Wang, S. Isukapalli, Q. Sun, S. Tong, P. Shade, V. Vyas, P.G. Georgopoulos)
• Ozone, air pollution and sprawl - a perspective (and analysis tools) from the Ozone Research Center and the Center for Exposure and Risk Modeling at EOHSI. Science of Sprawl (SOS) Conference, Trenton, NJ (May 1, 2003) (P.G. Georgopoulos)
• Advancements in Source-to-Dose Analysis of Population Exposures to Ozone. ISEA 2002: Linking Exposure and Health - Innovations and Interactions. Vancouver, Canada. (August 11-15, 2002) (P.G. Georgopoulos, V.M. Vyas, S. Wang, Q. Sun, A. Chandrasekar, P. Shade, J. Burke, H. Ozkaynak)
• Characterizing population exposures and co-exposures to ozone and PM2.5 for the city of Philadelphia using a source-to-dose framework. AWMA's 95th Annual Conference and Exhibition. Baltimore, MD. (June 23-27, 2002) (S.W. Wang, Q. Sun, A. Chandrasekar, V.M. Vyas, P. Shade, P.G. Georgopoulos)
• Evaluation of grid-based ozone and PM Modeling for a 1999 summer episode. AWMA's 95th Annual Conference and Exhibition. Baltimore, MD. (June 23-27, 2002) (Q. Sun, A. Chandrasekar, P.G. Georgopoulos)
• A comparative study of prognostic meteorological and of air quality model predictions with NE-OPS 1999 observations The 82nd AMS Annual Meeting, 4th Conference on Atmospheric Chemistry: Urban, Regional, and Global Scale Impacts of Air Pollution. Orlando FL. (January 13-17, 2002) (A. Chandrasekar, Q. Sun, P.G. Georgopoulos)
• Assessing regional and local exposures based upon the 8-hour ozone standard (80 ppb) ISEA 2001 Conference. Charleston, SC. (November 4-8, 2001) (G. Foley, P. Lioy, P.G. Georgopoulos)

Selected Simulation Results

CMAQ simulation of ground-level ozone, July 11-24, 1999, base case:

• 36km grid: FLASH MOVIE | QUICKTIME MOVIE
• 12km grid: FLASH MOVIE | QUICKTIME MOVIE

CMAQ simulation of ground-level ozone, July 11-24, 1999, NOX emissions reduced by 50%:

• 36km grid: FLASH MOVIE | QUICKTIME MOVIE
• 12km grid: FLASH MOVIE | QUICKTIME MOVIE

CMAQ simulation of ground-level ozone, July 11-24, 1999, VOC emissions reduced by 50%:

• 36km grid: FLASH MOVIE | QUICKTIME MOVIE
• 12km grid: FLASH MOVIE | QUICKTIME MOVIE

MAQSIP Simulation of Ambient Particulate Matter — This page provides the concentration distributions over the Eastern United States (the OTAG domain) of ambient PM2.5, PM10 and a number of gas phase species as predicted by the MAQSIP photochemical model together with the dynamic sectional aerosol model developed at University of Delaware (UDAERO), for the July 9-13, 1995 episode. Also included are the emissions and meteorology for the same episode.

PM2.5 Mass Prediction Comparison — This animated page shows a comparison of total PM2.5 mass predicted by MAQSIP-UDAERO and CMAQ for July 11, 1995 UTC over the OTAG domain.

EOHSI | CCL | CERM | Rutgers | UMDNJ