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2024
Sarwar, G., C. Hogrefe, B. Henderson, R. Mathur, R. Gilliam, A. Callaghan, J. Lee, AND L. Carpenter. Impact of particulate nitrate photolysis on air quality over the Northern Hemisphere. SCIENCE OF THE TOTAL ENVIRONMENT. Elsevier BV, AMSTERDAM, Netherlands, 917:N/A, (2024). https://doi.org/10.1016/j.scitotenv.2024.170406
2023
Madden, James, D. Kang, J. East, G. Sarwar, C. Hogrefe, R. Mathur, AND B. Henderson. Applying Multiple Approaches within CMAQ to Improve the Representation of Lightning NOx Emissions Across the Northern Hemisphere. 103rd Annual AMS Conference, Denver, CO, January 08 - 12, 2023.
Fahey, K., R. Gilliam, G. Pouliot, S. Farrell, G. Sarwar, H. Pye, B. Murphy, D. Huff, Nicole Briggs, AND R. Kotchenruther. CMAQ modeling of the 2022 Alaskan Layered Pollution and Chemical Analysis (ALPACA) field study. SIP meeting with AK Dept of Environmental Conservation, Fairbanks North Star Borough, and EPA Region 10, Fairbanks, AK, September 19, 2023.
Sarwar, G., C. Hogrefe, B. Henderson, K. Foley, R. Mathur, B. Murphy, AND S. Ahmed. Characterizing variations in ambient PM2.5 concentrations at the U.S. Embassy in Dhaka, Bangladesh using observations and the CMAQ modeling system. ENVIRONMENT INTERNATIONAL. Elsevier B.V., Amsterdam, Netherlands, 296:N/A, (2023). https://doi.org/10.1016/j.atmosenv.2023.119587
Mathur, R., D. Kang, S. Napelenok, C. Hogrefe, G. Sarwar, J. Xing, S. Itahashi, AND B. Henderson. Contributions of Source Regions to Changes in Long-Range Transported Ozone to North America during 1990-2010: A Modeling Analysis-Book Chapter. Air Pollution Modeling and Its Application XXVIII. Springer, Heidelberg, Germany, , 107-112, (2023). https://doi.org/10.1007/978-3-031-12786-1_14
Sarwar, G., D. Kang, B. Henderson, C. Hogrefe, Keith Appel, AND R. Mathur. Examining the Impact of Dimethyl Sulfide Emissions on Atmospheric Sulfate over the Continental U.S. ATMOSPHERE. MDPI, Basel, Switzerland, 14(4):660, (2023). https://doi.org/10.3390/atmos14040660
East, J., B. Henderson, C. Hogrefe, K. Foley, G. Sarwar, S. Napelenok, Keith Appel, G. Pouliot, K. Talgo, AND R. Mathur. HTAPv3 Initial Application in Hemispheric CMAQ. Contributors to the Task Force on Hemispheric Transport of Air Pollution (TF HTAP) Spring Meetings Online, None, NC, April 18 - 21, 2023.
Chen, H., P. Liu, Q. Wang, R. Huang, AND G. Sarwar. Impact and pathway of halogens on atmospheric oxidants in coastal city clusters in the Yangtze River Delta region in China. Atmospheric Pollution Research. Turkish National Committee for Air Pollution Research and Control, Izmir, Turkey, 15(2):N/A, (2024). https://doi.org/10.1016/j.apr.2023.101979
Sarwar, G., C. Hogrefe, B. Henderson, AND R. Mathur. Impact of aerosol nitrate photolysis on air quality over the Northern Hemisphere. Annual CMAS Conference, 2023, Chapel Hill, NC, October 16 - 18, 2023.
Kang, D., M. Madden, C. Hogrefe, G. Sarwar, R. Mathur, AND B. Henderson. Modeling Lightning NOx Emissions over the Contiguous United States and the Northern Hemisphere with NLDN and WWLLN data. 103rd Annual AMS Conference, Denver, CO, January 08 - 12, 2023.
Mathur, R., C. Hogrefe, J. Xing, Keith Appel, J. Bash, K. Foley, R. Gilliam, B. Henderson, W. Hutzell, D. Kang, B. Murphy, S. Napelenok, J. Pleim, G. Pouliot, H. Pye, G. Sarwar, AND F. Sidi. Multi-decadal (1990-2019) trends and source contributions to atmospheric nitrogen and sulfur deposition across the Northern Hemisphere. American Geophysical Union Fall Meeting, San Francisco, CA, December 11 - 15, 2023.
Farrell, S., H. Pye, R. Gilliam, G. Pouliot, D. Huff, G. Sarwar, W. Vizuete, AND K. Fahey. Predicted impacts of heterogeneous chemical pathways on particulate sulfur over the N. Hemisphere and Fairbanks, Alaska. International Technical Meeting On Air Pollution Modeling And Its Application, Chapel Hill, NC, May 22 - 26, 2023.
Willison, J., Jon Pleim, D. Wong, R. Gilliam, R. Bullock, J. Herwehe, C. Hogrefe, G. Pouliot, G. Sarwar, AND R. Mathur. Recent advancement of EPA’s global air quality modeling system: MPAS-CMAQ. 103rd American Meteorological Society Annual Meeting, Denver, CO, January 08 - 12, 2023.
Paz, D., R. Borge, J. Andrés, L. Tovar, G. Sarwar, AND S. Napelenok. Summertime tropospheric ozone source apportionment study in Madrid (Spain). Atmospheric Chemistry and Physics. Copernicus Publications, Katlenburg-Lindau, Germany, , N/A, (2023). https://doi.org/10.5194/egusphere-2023-2056
Hogrefe, C., R. Mathur, S. Napelenok, B. Henderson, G. Sarwar, G. Pouliot, J. Willison, R. Gilliam, Keith Appel, Bill Hutzell, D. Kang, B. Murphy, H. Pye, AND K. Foley. Trends and Variability in Concentrations and Source Contributions of 2002 – 2019 Ozone and Particulate Matter over the Northern Hemisphere. ITM 2023 International Technical Meeting On Air Pollution Modeling And Its Application, Chapel Hill, NC, May 22 - 26, 2023.
Appel, Keith, C. Hogrefe, K. Foley, R. Gilliam, D. Kang, G. Pouliot, B. Murphy, H. Pye, B. Place, J. Pleim, J. Bash, G. Sarwar, S. Napelenok, Cheung Wong, R. Mathur, F. Sidi, C. Nolte, J. Willison, K. Fahey, Bill Hutzell, E. D'Ambro, T. Spero, AND D. Schwede. Updates in and evaluation of the Community Multiscale Air Quality (CMAQ) modeling system version 5.4. 103rd Annual American Meteorological Society Meeting, Denver, CO, January 08 - 12, 2023.
2022
Sarwar, G., B. Henderson, R. Baldauf, AND P. Gupta. Analysis of ambient fine particle concentrations in Jakarta, Indonesia. EM Magazine. Air and Waste Management Association, Pittsburgh, PA, , 1-5, (2022).
East, J., B. Henderson, S. Napelenok, S. Koplitz, R. Pierce, A. Lenzen, D. Tong, R. Gilliam, G. Sarwar, AND F. Garcia-Menendez. Applying OMI and TROPOMI NO2 observations in EPA’s CMAQ modeling framework (HAQAST meeting). HAQAST, Virtual, Virtual, January 20 - 21, 2022.
Doraiswamy, P. AND G. Sarwar. Cover story for “International Air Quality Capacity Building”. EM Magazine. Air and Waste Management Association, Pittsburgh, PA, , 1-3, (2022).
Pye, H., B. Place, Christine Allen, E. D'Ambro, Keith Wyat Appel, J. Bash, M. Coggon, S. Farrell, K. Foley, C. Hogrefe, W. Hutzell, F. McNeill, B. Murphy, I. Piletic, G. Pouliot, R. Schwantes, G. Sarwar, E. Saunders, K. Seltzer, H. Simon, W. Stockwell, L. Valin, F. Wisner, AND L. Xu. Designing chemical mechanisms for ozone and secondary organic aerosol endpoints (ACM 2022). Atmospheric Chemical Mechanisms, Davis, CA, December 07 - 09, 2022.
Mathur, R., D. Kang, S. Napelenok, J. Xing, C. Hogrefe, G. Sarwar, S. Itahashi, AND B. Henderson. How Have Divergent Global Emission Trends Influenced Long-range Transported Ozone to North America? JOURNAL OF GEOPHYSICAL RESEARCH: ATMOSPHERES. American Geophysical Union, Washington, DC, 127(16):e2022JD036926, (2022). https://doi.org/10.1029/2022JD036926
East, J., B. Henderson, S. Napelenok, S. Koplitz, R. Pierce, A. Lenzen, R. Gilliam, G. Sarwar, D. Tong, AND F. Garcia-Menendez. Inferring air pollutant emission using satellites (NC State EWC departmental presentation). Environmental, Water Resources, and Coastal Engineering Symposium at North Carolina State University, Raleigh, NC, March 04, 2022.
East, J., B. Henderson, Z. Qu, S. Napelenok, S. Koplitz, R. Pierce, A. Lenzen, R. Gilliam, G. Sarwar, D. Tong, AND F. Garcia-Menendez. POSTER for IGC & TEMPO STM: Assimilation of NO2 – a comparison of multiple products and multiple models. TEMPO Scientific Team Meeting, Virtual, Virtual, May 31, 2022.
East, J., B. Henderson, Z. Qu, S. Napelenok, S. Koplitz, R. Pierce, A. Lenzen, R. Gilliam, G. Sarwar, D. Tong, AND F. Garcia-Menendez. POSTER for TEMPO STM: Assimilation of NO2 – a comparison of multiple products and multiple models. The International GEOS-Chem conference, Virtual, Virtual, June 07, 2022.
2021
Kang, D., G. Sarwar, C. Hogrefe, D. Wong, AND R. Mathur. Adaptation of World Wide Lightning Location Network Observations for Lightning Assimilation and Lightning NO in the WRF-CMAQ Modeling System. AMS 2021, Morrisville, NC, January 10 - 14, 2021.
Gilliam, R., K. Foley, J. Bash, R. Mathur, N. Possiel, C. Misenis, B. Henderson, G. Sarwar, Keith Wyat Appel, AND G. Pouliot. An evaluation of a two-decade CONUS and Northern Hemispheric timeseries of retrospective WRF simulations. 20th CMAS Conference, Virtual, NC, November 01 - 04, 2021.
Hogrefe, C., R. Gilliam, R. Mathur, B. Henderson, G. Sarwar, Keith Wyat Appel, G. Pouliot, J. Willison, R. Miller, J. Vukovich, A. Eyth, K. Talgo, C. Allen, AND K. Foley. CMAQv5.3.2 ozone simulations over the Northern Hemisphere: model performance and sensitivity to model configuration. 20th Annual CMAS Conference, NA, North Carolina, November 01 - 05, 2021.
East, J., B. Henderson, S. Napelenok, S. Koplitz, R. Pierce, A. Lenzen, R. Gilliam, G. Sarwar, AND F. Garcia-Menendez. Comparing OMI and TROPOMI NO2 data assimilation for estimating NOx emissions (AGU). 2021 AGU Fall Meeting, Virtual, LA, December 13 - 17, 2021.
Mathur, R., D. Kang, S. Napelenok, C. Hogrefe, G. Sarwar, B. Henderson, J. Xing, AND S. Itahashi. Contributions of Source Regions to Changes in Long-Range Transported Ozone to North America during 1990-2010: A Modeling Analysis. International Technical Meeting on Air Pollution Modeling and Its Applications, Barcelona (and virtual), N/A, SPAIN, October 18 - 22, 2021.
Kelly, J. AND G. Sarwar. Cover Story for the October 2021 issue of EM Magazine on “Natural emissions and their impacts on air quality”. EM Magazine. Air and Waste Management Association, Pittsburgh, PA, , 1-3, (2021).
Sarwar, G., D. Kang, AND R. Mathur. Effect of Aerosol Nitrate Photolysis on Wintertime Air Quality. Chapter 14, Air Pollution Modeling and its Application XXVII. Springer, Heidelberg, Germany, , 83–87, (2021). https://doi.org/10.1007/978-3-662-63760-9_12
Huang, Y., X. Lu, J. Fung, G. Sarwar, Z. Li, Q. Li, A. Saiz-Lopez, AND A. Lau. Effect of Bromine and Iodine Chemistry on Tropospheric Ozone over Asia-Pacific Using the CMAQ Model. CHEMOSPHERE. Elsevier Science Ltd, New York, NY, 262:127595, (2020). https://doi.org/10.1016/j.chemosphere.2020.127595
East, J., B. Henderson, S. Napelenok, S. Koplitz, R. Pierce, A. Lenzen, R. Gilliam, G. Sarwar, AND F. Garcia-Menendez. Enhanced representation of inter-continental pollutant transport by assimilating satellite NO2 and performing NOx emissions inversions. 20th CMAS Conference, Virtual, NC, November 01 - 05, 2021.
Kang, D., J. Willison, G. Sarwar, M. Madden, C. Hogrefe, R. Mathur, B. Gantt, AND S. Alfonso. Improving the Characterization of the Natural Emissions in CMAQ. EM Magazine. Air and Waste Management Association, Pittsburgh, PA, (10):1-7, (2021).
Zhang, S., G. Sarwar, J. Xing, B. Chu, C. Xue, A. Sarav, D. Ding, H. Zheng, Y. Mu, F. Duan, T. Ma, AND H. He. Improving the representation of HONO chemistry in CMAQ and examining its impact on haze over China. Atmospheric Chemistry and Physics. Copernicus Publications, Katlenburg-Lindau, Germany, 21(20):15809-15826, (2021). https://doi.org/10.5194/acp-21-15809-2021
Appel, Keith Wyat, J. Bash, K. Fahey, K. Foley, R. Gilliam, C. Hogrefe, Bill Hutzell, D. Kang, R. Mathur, B. Murphy, S. Napelenok, Chris Nolte, Jon Pleim, G. Pouliot, H. Pye, G. Sarwar, D. Schwede, F. Sidi, T. Spero, D. Wong, L. Ran, AND S. Roselle. The Community Multiscale Air Quality (CMAQ) Model Version 5.3: System Updates and Evaluation. Geoscientific Model Development . Copernicus Publications, Katlenburg-Lindau, Germany, 14:2867-2897, (2021). https://doi.org/10.5194/gmd-14-2867-2021
2020
Kang, D., C. Hogrefe, B. Murphy, V. Isakov, R. Mathur, R. Gilliam, G. Pouliot, B. Henderson, F. Sidi, G. Sarwar, AND T. Spero. Air Quality Changes under COVID-19 Social Distancing in the United States: Observational Analysis and Modeling Sensitivity Study. UK-US Collaboration on Air-Quality Modelling & Exposure Science Virtual Workshop, Virtual, November 16 - 17, 2020.
Sarwar, G., H. Zheng, S. Song, M. Gen, S. Wang, D. Ding, X. Chang, J. Xing, Y. Sun, D. Ji, C. Chan, J. Gao, AND M. McElroy. Contribution of Particulate Nitrate Photolysis to Heterogeneous Sulfate Formation for Winter Haze in China. Environmental Science & Technology Letters. American Chemical Society, Washington, DC, 7(9):632-638, (2020). https://doi.org/10.1021/acs.estlett.0c00368
Gantt, B., K. Foley, B. Henderson, H. Pye, K. Fahey, D. Kang, R. Mathur, J. Zhao, Y. Zhang, Q. Li, A. Saiz-Lopez, AND G. Sarwar. Impact of dimethylsulfide chemistry on air quality over the Northern Hemisphere. ATMOSPHERIC ENVIRONMENT. Elsevier Science Ltd, New York, NY, 244:117961, (2020). https://doi.org/10.1016/j.atmosenv.2020.117961
Simon, H. AND G. Sarwar. Introduction to the November 2020 issue of EM Magazine on Background Ozone. EM: AIR AND WASTE MANAGEMENT ASSOCIATION'S MAGAZINE FOR ENVIRONMENTAL MANAGERS. Air & Waste Management Association, Pittsburgh, PA, , 6-7, (2020).
Li, S., G. Sarwar, Y. Zhang, J. Zhao, S. Zhou, Y. Chen, G. Yang, AND A. Saiz-Lopez. Modeling the impact of marine DMS emissions on summertime air quality over coastal China. JOURNAL OF GEOPHYSICAL RESEARCH: ATMOSPHERES. American Geophysical Union, Washington, DC, 11(8):849, (2020). https://doi.org/10.3390/atmos11080849
Li, Q., A. Badia, T. Wang, G. Sarwar, X. Fu, L. Zhang, Q. Zhang, J. Fung, C. Cuevas, S. Wang, B. Zhou, AND A. Saiz-Lopez. Potential Effect of Halogens on Atmospheric Oxidation and Air Quality in China. JOURNAL OF GEOPHYSICAL RESEARCH: ATMOSPHERES. American Geophysical Union, Washington, DC, 125(9):e2019JD032058, (2020). https://doi.org/10.1029/2019JD032058
Sarwar, G., S. Li, Y. Zhang, J. Zhao, S. Zhou, Y. Chen, G. Yang, AND A. Saiz-Lopez. Regional and urban-scale environmental influences of oceanic DMS emissions over coastal China seas. ATMOSPHERE. MDPI, Basel, Switzerland, 11(8):849, (2020). https://doi.org/10.3390/atmos11080849
Zhang, S., G. Sarwar, J. Xing, B. Chu, C. Xue, A. Sarav, T. Ma, D. Ding, H. Zheng, Y. Mu, F. Duan, AND H. He. Significant contribution of heterogeneous reactions to the nitrous acid formation during winter in Beijing, China. 19th Annual CMAS Conference, Chapel Hill, NC, October 26 - 30, 2020.
Pleim, Jon, D. Wong, R. Gilliam, J. Willison, J. Herwehe, R. Bullock, G. Pouliot, C. Hogrefe, D. Kang, G. Sarwar, Bill Hutzell, H. Foroutan, R. Mathur, AND L. Ran. The Advanced Air Quality Modeling System: The Global MPAS-CMAQ Model. CMAS 2020 Conference, Chapel Hill, NC, October 26 - 30, 2020.
Appel, Keith Wyat, J. Bash, K. Fahey, K. Foley, R. Gilliam, C. Hogrefe, Bill Hutzell, D. Kang, R. Mathur, B. Murphy, S. Napelenok, Chris Nolte, Jon Pleim, G. Pouliot, H. Pye, G. Sarwar, D. Schwede, F. Sidi, T. Spero, D. Wong, D. Luecken, S. Roselle, AND L. Ran. The Community Multiscale Air Quality (CMAQ) Model Versions 5.3 and 5.3.1: Science Updates and Evaluation. AESMD Division Seminar, Research Triangle Park, North Carolina, August 19, 2020.
2019
Appel, Keith, C. Hogrefe, K. Foley, B. Murphy, H. Pye, J. Bash, J. Pleim, G. Sarwar, Cheung Wong, D. Luecken, W. Hutzell, K. Fahey, S. Roselle, L. Ran, F. Sidi, D. Kang, R. Gilliam, AND R. Mathur. Evaluation of the Community Multiscale Air Quality (CMAQ) model version 5.3. 2019 Annual Community Modeling and Analysis System (CMAS) Conference, Chapel Hill, North Carolina, October 21 - 23, 2019.
Sarwar, G., R. Borge, Q. Li, D. de la Paz, C. Cuevas, AND A. Saiz-Lopez. Impact of Halogen Chemistry on Ground-LEvel Ozone Levels in Europe. 2019 Harmonisation within Atmospheric Dispersion Modelling for Regulatory Purposes (Harmo 19), Burges, BELGIUM, June 03 - 06, 2019.
Li, Q., R. Borge, G. Sarwar, D. de la Paz, B. Gantt, J. Domingo, C. Cuevas, AND A. Saiz-Lopez. Impact of halogen chemistry on air quality in coastal and continental Europe: application of CMAQ model and implication for regulation. Atmospheric Chemistry and Physics. Copernicus Publications, Katlenburg-Lindau, Germany, 19(24):15321-15337, (2019). https://doi.org/10.5194/acp-19-15321-2019
Sarwar, G., B. Gantt, K. Foley, K. Fahey, T. Spero, D. Kang, R. Mathur, H. Foroutan, J. Xing, T. Sherwen, AND A. Saiz-Lopez. Influence of bromine and iodine chemistry on annual, seasonal, diurnal, and background ozone: CMAQ simulations over the Northern Hemisphere. ATMOSPHERIC ENVIRONMENT. Elsevier Science Ltd, New York, NY, 213:395-404, (2019). https://doi.org/10.1016/j.atmosenv.2019.06.020
Kelly, J. AND G. Sarwar. Introduction to the December 2019 issue of EM Magazine on Wintertime Air Quality. EM: AIR AND WASTE MANAGEMENT ASSOCIATION'S MAGAZINE FOR ENVIRONMENTAL MANAGERS. Air & Waste Management Association, Pittsburgh, PA, Dec:1, (2019).
Zhang, S., J. Xing, G. Sarwar, Y. Ge, H. He, F. Duan, Y. Zhao, K. He, L. Zhu, AND B. Chu. Parameterization of heterogeneous reaction of SO2 to sulfate on dust with coexistence of NH3 and NO2 under different humidity conditions. ATMOSPHERIC ENVIRONMENT. Elsevier Science Ltd, New York, NY, 208:133-140, (2019). https://doi.org/10.1016/j.atmosenv.2019.04.004
Appel, Keith, C. Hogrefe, K. Foley, B. Murphy, H. Pye, G. Sarwar, J. Bash, J. Pleim, AND R. Mathur. Regional and hemispheric evaluation of the new Community Multiscale Air Quality Model (CMAQ) version 5.3. 2019 Meteorology and Climate - Modeling for Air Quality Conference, Davis, California, September 11 - 13, 2019.
Zare, A., K. Fahey, G. Sarwar, R. Cohen, AND H. Pye. Vapor-Pressure Pathways Initiate but Hydrolysis Products Dominate the Aerosol Estimated from Organic Nitrates. ACS Earth and Space Chemistry. American Chemical Society, Washington, DC, 3(8):1426-1437, (2019). https://doi.org/10.1021/acsearthspacechem.9b00067
2018
Biton, L. AND G. Sarwar. Advances in Air Quality Modeling. EM: AIR AND WASTE MANAGEMENT ASSOCIATION'S MAGAZINE FOR ENVIRONMENTAL MANAGERS. Air & Waste Management Association, Pittsburgh, PA, , 1, (2018).
Sarwar, G. Impact of bromine, iodine, and DMS chemistry on air quality. Department of Environmental Science and Engineering, Shanghai, CHINA, November 07, 2018.
Sarwar, G., D. Kang, K. Fahey, K. Foley, R. Mathur, AND B. Gantt. Importance of halogen chemistry in dimethylsulfide oxidation. 2018 Joint International Conf. on ABaCAS & CMAS-Asia-Pacific, Beijing, CHINA, May 21 - 23, 2018.
Appel, W., C. Hogrefe, K. Foley, G. Pouliot, R. Gilliam, B. Murphy, H. Pye, J. Bash, Jon Pleim, G. Sarwar, S. Roselle, AND R. Mathur. Preliminary Evaluation of the CMAQ v5.3 Beta Release. 17th Annual CMAS Conference, Chapel Hill, NC, October 22 - 24, 2018.
Murphy, B., W. Appel, J. Bash, K. Fahey, B. Henderson, Bill Hutzell, D. Kang, D. Luecken, R. Mathur, S. Napelenok, Chris Nolte, H. Pye, Jon Pleim, M. Qin, L. Ran, S. Roselle, G. Sarwar, D. Schwede, Q. Shu, AND T. Spero. Scientific and Structural Developments in CMAQv5.3. 2018 CMAS Conference, Chapel Hill, North Carolina, October 22 - 24, 2018.
Muñiz-Unamunzaga, M., R. Borge, G. Sarwar, B. Gantt, D. de la Paz, C. Cuevas, AND A. Saiz-Lopez. The influence of ocean halogen and sulfur emissions in the air quality of a coastal megacity: The case of Los Angeles. SCIENCE OF THE TOTAL ENVIRONMENT. Elsevier BV, AMSTERDAM, Netherlands, 610(611):1536-1545, (2018).
2017
Mathur, R., J. Xing, C. Hogrefe, G. Sarwar, D. Kang, AND S. Napelenok. A Hemispheric Version of the Community Multiscale Air Quality (CMAQ) Modeling System. 2017 Western Modeling Workshop, Boullder, CO, September 06 - 08, 2017.
Appel, W., S. Napelenok, K. Foley, H. Pye, C. Hogrefe, D. Luecken, J. Bash, S. Roselle, Jon Pleim, H. Foroutan, Bill Hutzell, G. Pouliot, G. Sarwar, K. Fahey, B. Gantt, R. C. GILLIAM, N. Heath, D. Kang, R. Mathur, D. Schwede, T. Spero, David-C Wong, AND Jeff Young. Description and evaluation of the Community Multiscale Air Quality (CMAQ) modeling system version 5.1. Geoscientific Model Development . Copernicus Publications, Katlenburg-Lindau, Germany, 10(4):1703-1732, (2017). https://doi.org/10.5194/gmd-10-1703-2017
Sarwar, G., J. Xing, K. Fahey, K. Foley, David-C Wong, R. Mathur, C. Gan, B. Gantt, AND H. Simon. Dimethylsulfide Chemistry: Annual, Seasonal, and Spatial Impacts on Sulfate. Air Pollution Modeling and its Application XXV. Springer International Publishing AG, Cham (ZG), Switzerland, , 347-352, (2017).
Mathur, R., J. Xing, R. Gilliam, G. Sarwar, C. Hogrefe, Jon Pleim, G. Pouliot, S. Roselle, T. Spero, David-C Wong, AND J. Young. Extending the Community Multiscale Air Quality (CMAQ) Modeling System to Hemispheric Scales: Overview of Process Considerations and Initial Applications. Atmospheric Chemistry and Physics. Copernicus Publications, Katlenburg-Lindau, Germany, 17:12449-12474, (2017).
Xing, J., J. Wang, R. Mathur, S. Wang, G. Sarwar, Jon Pleim, C. Hogrefe, Y. Zhang, J. Jiang, David-C Wong, AND J. Hao. Impacts of aerosol direct effects on tropospheric ozone through changes in atmospheric dynamics and photolysis rates. Atmospheric Chemistry and Physics. Copernicus Publications, Katlenburg-Lindau, Germany, 17:9869-9883, (2017).
Mathur, R., S. Napelenok, J. Xing, C. Hogrefe, D. Kang, AND G. Sarwar. Modeling the Influence of Hemispheric Transport on Trends in O3 Distributions. 5th International Conf. on Air Benefits and Cost At, Jinjiang District, Chengdu, CHINA, July 03 - 05, 2017.
Gantt, B., G. Sarwar, J. Xing, H. Simon, D. Schwede, Bill Hutzell, R. Mathur, AND A. Saiz-Lopez. The Impact of Iodide-Mediated Ozone Deposition and Halogen Chemistry on Surface Ozone Concentrations Across the Continental United States. ENVIRONMENTAL SCIENCE & TECHNOLOGY. American Chemical Society, Washington, DC, 51(3):1458-1466, (2017). https://doi.org/10.1021/acs.est.6b03556
2016
Mathur, R., J. Xing, D. Kang, S. Napelenok, C. Hogrefe, G. Sarwar, AND Jon Pleim. Characterizing the Influence of Hemispheric Transport on Regional Air Pollution. 10th International Conf. on Air Quality-Science & Application, Milan, ITALY, March 14 - 18, 2016.
Sarwar, G., J. Xing, K. Fahey, D. Kang, B. Gantt, H. Simon, AND R. Mathur. Dimethylsulfide chemistry: annual, seasonal, and spatial impacts on SO_4^(2-). ITM 2016 Conference, Crete, GREECE, October 03 - 07, 2016.
Sarwar, G., K. Foley, R. Mathur, H. Simon, J. Xing, AND K. Fahey. Halogen Chemistry in the CMAQ Model. 15th Annual CMAS Conference, Chapel Hill, NC, October 24 - 26, 2016.
Mathur, R., J. Xing, D. Kang, S. Napelenok, C. Hogrefe, G. Sarwar, AND Jon Pleim. Modeling Analysis of Multi-Decadal Trends in Ozone and Precursor Species across the Northern Hemisphere and the United States. ENV-VISION Conference, Washington, DC, May 10 - 11, 2016.
Mathur, R., Jon Pleim, C. Hogrefe, M. Gan, G. Sarwar, David-C Wong, J. Wang, S. McKeen, J. Xing, AND J. Wang. Representing the effects of stratosphere–troposphere exchange on 3-D O3 distributions in chemistry transport models using a potential vorticity-based parameterization. Atmospheric Chemistry and Physics. Copernicus Publications, Katlenburg-Lindau, Germany, 16:10865-10877, (2016).
Sarwar, G., D. Kang, K. Foley, D. Schwede, B. Gantt, AND R. Mathur. Technical note: Examining ozone deposition over seawater. ATMOSPHERIC ENVIRONMENT. Elsevier Science Ltd, New York, NY, 141:255–262, (2016).
2015
Sarwar, G., B. Gantt, D. Kang, D. Schwede, R. Mathur, AND R. Schlitzer. Chemical effect on ozone deposition over seawater. CMAS, Chapel Hill, NC, October 05 - 07, 2015.
Sarwar, G., K. Fahey, K. Foley, B. Gantt, D. Luecken, AND R. Mathur. Impact of dimethylsulfide chemistry on sulfate over the Northern Hemisphere. CMAS, Chapel Hill, NC, October 05 - 07, 2015.
Sarwar, G., B. Gantt, D. Schwede, K. Foley, R. Mathur, AND A. Saiz-Lopez. Impact of enhanced ozone deposition and halogen chemistry on tropospheric ozone over the Northern Hemisphere. ENVIRONMENTAL SCIENCE & TECHNOLOGY. American Chemical Society, Washington, DC, 49(15):9203-9211, (2015).
2014
Sarwar, G., J. Xing, J. Godowitch, D. Schwede, AND R. Mathur. Impact of RACM2, halogen chemistry, and updated ozone deposition velocity onhemispheric ozone predictions. Chapter 40, Air Pollution Modeling & Its Application XXIII. Springer, New York, NY, , 247-251, (2014).
Sarwar, G., B. Gantt, D. Schwede, David-C Wong, R. Mathur, AND A. Saiz-Lopez. Impact of enhanced ozone deposition and halogen chemistry on model performance. 13th Annual CMAS Conference, Chapel Hill, NC, October 27 - 29, 2014.
Sarwar, G., H. Simon, K. Fahey, R. Mathur, W. Goliff, AND W. Stockwell. Impact of sulfur dioxide oxidation by Stabilized Criegee Intermediate on sulfate. ATMOSPHERIC ENVIRONMENT. Elsevier Science Ltd, New York, NY, 85(3):204-214, (2014).
Sarwar, G., H. Simon, J. Xing, AND R. Mathur. Importance of tropospheric ClNO2 chemistry across the Northern Hemisphere. GEOPHYSICAL RESEARCH LETTERS. American Geophysical Union, Washington, DC, 41(11):4050-4058, (2014).
2013
Sarwar, G., J. Godowitch, K. Fahey, J. Xing, David-C Wong, Jeff Young, S. Roselle, AND R. Mathur. :Examination of Sulfate production by CB05TU, RACM2 & RACM2 with SCI initiated SO2,oxidation in the Northern Hemisphere". Presented at Presentation at the CMAS Conference, Chapel Hill, NC, October 28 - 30, 2013.
Sarwar, G., J. Godowitch, B. Henderson, K. Fahey, G. Pouliot, Bill Hutzell, R. Mathur, D. Kang, W. Goliff, AND W. Stockwell. A comparison of atmospheric composition using the Carbon Bond and Regional Atmospheric Chemistry MechanismsChemistry Mechanisms. Atmospheric Chemistry and Physics. Copernicus Publications, Katlenburg-Lindau, Germany, 13(19):9675-9712, (2013).
Sarwar, G., K. Fahey, R. Kwok, R. Gilliam, S. Roselle, R. Mathur, X. Jian, J. Yu, AND W. Carter. Potential Impacts of two SO2 oxidation pathways on regional sulfate concentrations: acqueous-hase oxidation by NO2 and gas-phase oxidation by Stabilized Criegee Intermediates. ATMOSPHERIC ENVIRONMENT. Elsevier Science Ltd, New York, NY, 68(4):186-197, (2013).
Zhang, R., G. Sarwar, J. Fung, AND A. Lau. Role of photoexcited nitrogen dioxide chemistry on ozone formation and emission control strategy over the Pearl River Delta, China. Atmospheric Research. Elsevier Science BV, Amsterdam, Netherlands, 132133:332-344, (2013).
Sarwar, G., S. Chen, B. Henderson, K. Fahey, R. Gilliam, G. Pouliot, B. Czader, AND B. Rappenglueck. Simulation of atmospheric oxidation capacity in Houston, Texas. Chapter 81, Air Pollution Modeling and its Application XXII. Springer, Heidelburg, Germany, 2014:481-486, (2013).
Sarwar, G., J. Godowitch, F. Liu, AND G. Yarwood. “Impact of CB6 and CB05TU chemical mechanisms on air quality”. Presented at Presentation at the CMAS Conference, Chapel Hill, NC, October 28 - 30, 2013.
Sarwar, G., J. Xing, J. Godowitch, D. Schwede, AND R. Mathur. “Impact of RACM2, halogen chemistry, and updated ozonedeposition velocity on hemispheric ozone predictions”. Presented at NATO ITM Conference, Miami, FL, August 26 - 30, 2013.
2012
Zhang, R., G. SARWAR, Fung, A. K. Lau, AND Y. Zhang. Examining the Impact of Nitrous Acid Chemistry on Ozone and PM over the Pearl River Delta Region. Tareq Hussein (Academic Editor) (ed.), ADVANCES IN METEOROLOGY. Hindawi Publishing Corporation, New York, NY, 2012(140932):1-18, (2012).
SARWAR, G., H. SIMON, P. BHAVE, AND G. Yarwood. Examining the impact of heterogeneous nitryl chloride production on air quality across the United States. Atmospheric Chemistry and Physics. Copernicus Publications, Katlenburg-Lindau, Germany, 12(14):6067-6677, (2012).
Zhang, Y., Y. Chen, G. SARWAR, AND K. L. SCHERE. Impact of Gas-Phase Mechanisms on Weather Research Forecasting Model with Chemistry (WRF/Chem) Predictions: Mechanism Implementation and Comparative Evaluation. JOURNAL OF GEOPHYSICAL RESEARCH. American Geophysical Union, Washington, DC, 117(D01301):1-31, (2012).
2011
Henderson, B. H., R. W. PINDER, J. L. CROOKS, R. COHEN, W. T. HUTZELL, G. SARWAR, W. S. Goliff, W. R. Stockwell, A. Fahr, R. MATHUR, A. G. CARLTON, AND W. Vizuete. Evaluation of Simulated Photochemical Partitioning of Oxidized Nitrogen in the Upper Troposphere. Atmospheric Chemistry and Physics. Copernicus Publications, Katlenburg-Lindau, Germany, 11(1):275-291, (2011).
SARWAR, G., W. APPEL, R. MATHUR, AND K. L. SCHERE. Examining the Impact of an Updated Toluene Mechanism on Air Quality in the Eastern US. Chapter 38, Douw G. Steyn & Silvia Trini Castelli (ed.), Air Pollution Modeling and its Application, XXI . Springer, New York, NY, Series C:227-231, (2011).
2010
YU, S., R. MATHUR, G. SARWAR, D. KANG, D. Tong, G. POULIOT, AND J. E. PLEIM. Eta-CMAQ Air Quality Forecasts for O3 and Related Species Using Three Different Photochemical Mechanisms (CB4, CB05, SAPRC-99): Comparisons with Measurements During the 2004 ICARTT Study. Atmospheric Chemistry and Physics. Copernicus Publications, Katlenburg-Lindau, Germany, 10(6):3001-3025, (2010).
FOLEY, K., S. J. ROSELLE, W. APPEL, P. BHAVE, J. E. PLEIM, T. L. OTTE, R. MATHUR, G. SARWAR, J. O. YOUNG, R. C. GILLIAM, C. G. NOLTE, J. T. Kelly, A. GILLILAND, AND J. O. BASH. Incremental Testing of the Community Multiscale Air Quality (CMAQ) Modeling System Version 4.7. Geoscientific Model Development . Copernicus Publications, Katlenburg-Lindau, Germany, 3(1):205-226, (2010).
SARWAR, G., R. Joseph, AND R. MATHUR. Influence of Chlorine Emissions on Ozone Levels in the Troposphere. Chapter 2, Douw G. Steyn and S.T. Rao (ed.), Air Pollution Modeling and its Applications XX. Springer Netherlands, , Netherlands, 2.23(C):237-240, (2010).
CARLTON, A. G., P. BHAVE, S. NAPELENOK, E. O. EDNEY, G. SARWAR, R. W. PINDER, G. POULIOT, AND M. HOUYOUX. Model Representation of Secondary Organic Aerosol in CMAQ v4.7. ENVIRONMENTAL SCIENCE & TECHNOLOGY. American Chemical Society, Washington, DC, 44(22):8553-8560, (2010).
SIMON, H., L. BECK, P. BHAVE, F. Divita, Y. Hsu, D. J. LUECKEN, D. MOBLEY, G. POULIOT, A. H. REFF, G. SARWAR, AND M. STRUM. The Development and Uses of EPA's SPECIATE Database. Atmospheric Pollution Research. Turkish National Committee for Air Pollution Research and Control, Izmir, Turkey, 1(4):196-206, (2010).
2008
MATHUR, R., S. J. ROSELLE, G. POULIOT, AND G. SARWAR. Diagnostic Analysis of the Three-Dimensional Sulfur Distributions over the Eastern United States Using the CMAQ Model and Measurements from the ICARTT Field Experiment. Chapter 5, Air Pollution Modeling and its Application XIX. Springer, New York, NY, , 496-504, (2008).
APPEL, W., P. BHAVE, A. GILLILAND, G. SARWAR, AND S. J. ROSELLE. EVALUATION OF THE COMMUNITY MULTISCALE AIR QUALITY (CMAQ) MODEL VERSION 4.5: UNCERTAINTIES AND SENSITIVITIES IMPACTING MODEL PERFORMANCE: PART II - PARTICULATE MATTER. ATMOSPHERIC ENVIRONMENT. Elsevier Science Ltd, New York, NY, 42(24):6057-6066, (2008).
SARWAR, G., D. J. LUECKEN, G. YARWOOD, G. D. WHITTEN, AND W. P. CARTER. IMPACT OF AN UPDATED CARBON BOND MECHANISM ON PREDICTIONS FROM THE CMAQ MODELING SYSTEM: PRELIMINARY ASSESSMENT. JOURNAL OF APPLIED METEOROLOGY AND CLIMATOLOGY. American Meteorological Society, Boston, MA, 47(1):3-14, (2008).