Staff information

Rahul Zaveri

Aerosols and Aerosol-Cloud Int
Earth Scientist
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Biography

Rahul Zaveri has a wide range of research experience in investigating the fate of anthropogenic and biogenic trace gas and aerosol emissions and their effects on air quality and climate change. His expertise is in modeling the complex physical and chemical processes occurring in the gas-, aerosol-, and cloud-phases and their climate-related properties. He is the scientific lead for the gas-phase photochemical mechanism CBM-Z and the comprehensive aerosol model MOSAIC, which have been implemented in the fully-coupled meteorology-chemistry model WRF-Chem. Dr. Zaveri has also participated in and led field campaigns to study the formation and evolution of oxidants and aerosols and their climate-related properties downwind of large urban areas.

Research Interests

Secondary organic and inorganic aerosol formation
Gas-phase photochemistry and heterogeneous reactions
Gas-particle mass transfer
Aerosol mixing state and its effects on optical and CCN activation properties
Lagrangian and Eulerian modeling of aerosol formation, aging, and transport

Education and Credentials

Post-doctoral, Atmospheric Sciences, Pacific Northwest National Laboratory
Ph.D., Chemical Engineering, Virginia Tech
M.S., Chemical Engineering, University of Kentucky
B.S., Chemical Engineering, University of Bombay

Affiliations and Professional Service

American Geophysical Union
American Association for Aerosol Research
Sigma Xi

Awards and Recognitions

Outstanding Performance Award, Fundamental Science Directorate, Pacific Northwest National Laboratory, 10/05
Associated Western Universities Postgraduate Fellowship, Pacific Northwest National Laboratory, 7/97 to 7/98
Graduate Research Assistantship, Department of Chemical Engineering, Virginia Tech, 8/93 to 6/97
Graduate Research Assistantship, Department of Chemical Engineering, University of Kentucky, 10/91 to 8/93

PNNL Publications

2023

Chen Y., R.A. Zaveri, G.W. Vandergrift, Z. Cheng, S. China, A. Zelenyuk-Imre, and J.E. Shilling. 2023. "Nonequilibrium Behavior in Isoprene Secondary Organic Aerosol." Environmental Science & Technology 57, no. 38:14182-14193. PNNL-SA-185113. doi:10.1021/acs.est.3c03532
Reyes-Villegas E., D. Lowe, J.S. Johnson, K.S. Carslaw, E. Darbyshire, M. Flynn, and J.D. Allan, et al. 2023. "Simulating organic aerosol in Delhi with WRF-Chem using the volatility-basis-set approach: Exploring model uncertainty with a Gaussian Process emulator." Atmospheric Chemistry and Physics 23, no. 10:5763-5782. PNNL-SA-175813. doi:10.5194/acp-23-5763-2023
Zhang J., M.B. Shrivastava, A. Zelenyuk-Imre, R.A. Zaveri, J.D. Surratt, M. Riva, and D.M. Bell, et al. 2023. "Observationally Constrained Modeling of the Reactive Uptake of Isoprene-Derived Epoxydiols under Elevated Relative Humidity and Varying Acidity of Seed Aerosol Conditions." ACS Earth and Space Chemistry 7, no. 4:788-799. PNNL-SA-180012. doi:10.1021/acsearthspacechem.2c00358

2022

Chu C., J. Zhai, Y. Han, J. Ye, R.A. Zaveri, S.T. Martin, and S.T. Martin, et al. 2022. "New Particle Formation and Growth Dynamics for a-Pinene Ozonolysis in a Smog Chamber and Implications for Ambient Environments." ACS Earth and Space Chemistry 6, no. 12:2826-2835. PNNL-SA-179840. doi:10.1021/acsearthspacechem.2c00161
Fast J.D., D.M. Bell, G.R. Kulkarni, J. Liu, F. Mei, G. Saliba, and J.E. Shilling, et al. 2022. "Using Aircraft Measurements to Characterize Subgrid-Scale Variability of Aerosol Properties Near the Atmospheric Radiation MeasurementSouthern Great Plains Site." Atmospheric Chemistry and Physics 22, no. 17. PNNL-SA-173155. doi:10.5194/acp-22-11217-2022
Fung K., C.L. Heald, J.H. Kroll, S. Wang, D.S. Jo, A. Gettelman, and Z. Lu, et al. 2022. "Exploring dimethyl sulfide (DMS) oxidation and implications for global aerosol radiative forcing." Atmospheric Chemistry and Physics 22, no. 2:1549-1573. PNNL-SA-166358. doi:10.5194/acp-22-1549-2022
Liu J., E. D'Ambro, B.H. Lee, S. Schobesberger, D.M. Bell, R.A. Zaveri, and A. Zelenyuk-Imre, et al. 2022. "Monoterpene photooxidation in a continuous-flow chamber: SOA yields and impacts of oxidants, NOx, and VOC precursors." Environmental Science & Technology 56, no. 17:12066-12076. PNNL-SA-176021. doi:10.1021/acs.est.2c02630
Ruan X., C. Zhao, R.A. Zaveri, P. He, X. Wang, J. Shao, and L. Geng. 2022. "Simulations of aerosol pH in China using WRF-Chem (v4.0): sensitivities of aerosol pH and its temporal variations in haze episodes." Geoscientific Model Development 15, no. 15:6143-6164. PNNL-SA-175015. doi:10.5194/gmd-15-6143-2022
Wu M., H. Wang, R.C. Easter, Z. Lu, X. Liu, B. Singh, and P. Ma, et al. 2022. "Development and evaluation of E3SM-MOSAIC: Spatial distributions and radiative effects of nitrate aerosol." Journal of Advances in Modeling Earth Systems 14, no. 11:e2022MS003157. PNNL-SA-172258. doi:10.1029/2022MS003157
Zaveri R.A., J. Wang, J. Fan, Y. Zhang, J.E. Shilling, A. Zelenyuk-Imre, and F. Mei, et al. 2022. "Rapid growth of anthropogenic organic nanoparticles greatly alters cloud life cycle in the Amazon rainforest." Science Advances 8, no. 2:Art. No. eabj0329. PNNL-SA-155974. doi:10.1126/sciadv.abj0329
Zhao B., J.D. Fast, M.B. Shrivastava, N.M. Donahue, Y. Gao, J.E. Shilling, and Y. Liu, et al. 2022. "Formation Process of Particles and Cloud Condensation Nuclei Over the Amazon Rainforest: The Role of Local and Remote New-Particle Formation." Geophysical Research Letters 49, no. 22:Art. No. e2022GL100940. PNNL-SA-177009. doi:10.1029/2022GL100940

2021

He Y., A. Akherati, T. Nah, N.L. Ng, L.A. Garofalo, D.K. Farmer, and M. Shiraiwa, et al. 2021. "Particle Size Distribution Dynamics Can Help Constrain the Phase State of Secondary Organic Aerosol." Environmental Science & Technology 55, no. 3:1466-1476. PNNL-SA-156556. doi:10.1021/acs.est.0c05796
Jathar S., C. Cappa, Y. He, J. Pierce, W. Chuang, J.H. Seinfeld, and R.A. Zaveri, et al. 2021. "A Computationally Efficient Model to Represent the Chemistry, Thermodynamics, and Microphysics of Secondary Organic Aerosols (simpleSOM): Model Development and Application to a-pinene SOA." Environmental Science: Atmospheres 1, no. 6:372-394. PNNL-SA-160322. doi:10.1039/d1ea00014d
Jo D.S., A. Hodzic, L.K. Emmons, S. Tilmes, R.H. Schwantes, M.J. Mills, and P. Campuzano-Jost, et al. 2021. "Future changes in isoprene-epoxydiol-derived secondary organic aerosol (IEPOX-SOA) under the shared socioeconomic pathways: the importance of physico-chemical dependency." Atmospheric Chemistry and Physics 21, no. 5:3395-3425. PNNL-SA-156532. doi:10.5194/acp-21-3395-2021
Lu Z., X. Liu, R.A. Zaveri, R.C. Easter, S. Tilmes, L. Emmons, and F. Vitt, et al. 2021. "Radiative Forcing of Nitrate Aerosols from 1975 to 2010 as Simulated by MOSAIC Module in CESM2-MAM4." Journal of Geophysical Research: Atmospheres 126, no. 17:e2021JD034809. PNNL-SA-154136. doi:10.1029/2021JD034809
Qin Y., J. Ye, P. Ohno, J. Zhai, Y. Han, P. Liu, and J. Wang, et al. 2021. "Humidity dependence of the condensational growth rates of a-pinene secondary organic aerosol particles." Environmental Science & Technology 55, no. 21:acs.est.1c01738. PNNL-SA-160806. doi:10.1021/acs.est.1c01738
Zawadowicz M.A., K.J. Suski, J. Liu, M.S. Pekour, J.D. Fast, F. Mei, and A.J. Sedlacek, et al. 2021. "Aircraft measurements of aerosol and trace gas chemistry in the eastern North Atlantic." Atmospheric Chemistry and Physics 21, no. 10:7983-8002. PNNL-SA-155854. doi:10.5194/acp-21-7983-2021
Zhao B., J.D. Fast, N.M. Donahue, M.B. Shrivastava, M. Schervish, J.E. Shilling, and H. Gordon, et al. 2021. "Impact of Urban Pollution on Organic-Mediated New-Particle Formation and Particle Number Concentration in the Amazon Rainforest." Environmental Science & Technology 55, no. 8:4357-4367. PNNL-SA-159901. doi:10.1021/acs.est.0c07465

2020

Pye H.O., A. Nenes, B. Alexander, A.P. Ault, M. Barth, S.L. Clegg, and J.L. Collett, et al. 2020. "The Acidity of Atmospheric Particles and Clouds." Atmospheric Chemistry and Physics 20, no. 8:4809-4888. PNNL-SA-148049. doi:10.5194/acp-20-4809-2020
Zaveri R.A., J.E. Shilling, A. Zelenyuk-Imre, M.A. Zawadowicz, K.J. Suski, S. China, and D.M. Bell, et al. 2020. "Particle-phase diffusion modulates partitioning of semivolatile organic compounds to aged secondary organic aerosol." Environmental Science & Technology 54, no. 5:2595-2605. PNNL-SA-147224. doi:10.1021/acs.est.9b05514
Zaveri R.A., J.E. Shilling, J.D. Fast, and S.R. Springston. 2020. "Efficient Nighttime Biogenic SOA Formation in a Polluted Residual Layer." Journal of Geophysical Research: Atmospheres 125, no. 6:Article No. e2019JD031583. PNNL-SA-146860. doi:10.1029/2019JD031583
Zhao B., M.B. Shrivastava, N.M. Donahue, H. Gordon, M. Schervish, J.E. Shilling, and R.A. Zaveri, et al. 2020. "High concentration of ultrafine particles in the Amazon free troposphere produced by organic new particle formation." Proceedings of the National Academy of Sciences (PNAS) 117, no. 41:25344-25351. PNNL-SA-155827. doi:10.1073/pnas.2006716117

2019

Bhandari J., S. China, K.K. Chandrakar, G. Kinney, W. Cantrell, R.A. Shaw, and L.R. Mazzoleni, et al. 2019. "Extensive Soot Compaction by Cloud Processing from Laboratory and Field Observations." Scientific Reports 9, no. 1:11824. PNNL-SA-143342. doi:10.1038/s41598-019-48143-y
Shilling J.E., M.A. Zawadowicz, J. Liu, R.A. Zaveri, and A. Zelenyuk-Imre. 2019. "Photochemical Aging Alters Secondary Organic Aerosol Partitioning Behavior." ACS Earth and Space Chemistry 3, no. 12:2704-2716. PNNL-SA-147587. doi:10.1021/acsearthspacechem.9b00248
Shrivastava M.B., M.O. Andreae, P. Artaxo, H. Barbosa, L.K. Berg, J. Brito, and J. Ching, et al. 2019. "Urban pollution greatly enhances formation of natural aerosols over the Amazon rainforest." Nature Communications 10, no. 1:Article No. 1046. PNNL-SA-133689. doi:10.1038/s41467-019-08909-4
Wang J., J.E. Shilling, J. Liu, A. Zelenyuk-Imre, D.M. Bell, M.D. Petters, and R.M. Thalman, et al. 2019. "Cloud droplet activation of secondary organic aerosol is mainly controlled by molecular weight, not by solubility." Atmospheric Chemistry and Physics 19, no. 2:941-954. PNNL-SA-140927. doi:10.5194/acp-19-941-2019
Wang J., J.E. Shilling, J. Liu, A. Zelenyuk-Imre, D.M. Bell, M.D. Petters, and R.M. Thalman, et al. 2019. "Cloud droplet activation of secondary organic aerosol is mainly controlled by molecular weight, not water solubility." Atmospheric Chemistry and Physics 19, no. 2:941-954. PNNL-SA-134664. doi:10.5194/acp-19-941-2019

2018

D'Ambro E., S. Schobesberger, R.A. Zaveri, J.E. Shilling, B.H. Lee, F.D. Lopez-Hilfiker, and C. Mohr, et al. 2018. "Isothermal evaporation of a-pinene ozonolysis SOA: volatility, phase state, and oligomeric composition." ACS Earth and Space Chemistry 2, no. 10:1058-1067. PNNL-SA-135817. doi:10.1021/acsearthspacechem.8b00084
Sharma N., S. China, J. Bhandari, K. Gorkowski, M.K. Dubey, R.A. Zaveri, and C. Mazzoleni. 2018. "Physical properties of aerosol internally mixed with soot particles in a biogenically-dominated environment in California." Geophysical Research Letters 45, no. 20:11,473-11,482. PNNL-SA-136202. doi:10.1029/2018GL079404
Zaveri R.A., J.E. Shilling, A. Zelenyuk-Imre, J. Liu, D.M. Bell, E. D'Ambro, and C. Gaston, et al. 2018. "Growth kinetics and size distribution dynamics of viscous secondary organic aerosol." Environmental Science & Technology 52, no. 3:1191-1199. PNNL-SA-128966. doi:10.1021/acs.est.7b04623

2017

Bateman A.P., Z.H. Gong, T. Harder, S. de Sa, B. Wang, P. Castillo, and S. China, et al. 2017. "Anthropogenic influences on the physical state of submicron particulate matter over a tropical forest." Atmospheric Chemistry and Physics 17, no. 3:1759-1773. PNNL-SA-119055. doi:10.5194/acp-17-1759-2017
D'Ambro E., B.H. Lee, J. Liu, J.E. Shilling, C.J. Gaston, F.D. Lopez-Hilfiker, and S. Schobesberger, et al. 2017. "Molecular composition and volatility of isoprene photochemical oxidation secondary organic aerosol under low and high NOx conditions." Atmospheric Chemistry and Physics 17, no. 1:159-174. PNNL-SA-119934. doi:10.5194/acp-17-159-2017
Gyawali M.S., W. Arnott, R.A. Zaveri, C. Song, B. Flowers, M.K. Dubey, and A. Setyan, et al. 2017. "Evolution of Multispectral Aerosol Absorption Properties in a Biogenically-Influenced Urban Environment during the CARES Campaign." Atmosphere 8, no. 11:217. PNNL-SA-130581. doi:10.3390/atmos8110217
Gyawali M.S., W. Arnott, R.A. Zaveri, C. Song, B. Flowers, M.K. Dubey, and A. Setyan, et al. 2017. "Evolution of multispectral aerosol absorption properties in a biogenically-influenced urban environment during the CARES campaign." Atmosphere 8, no. 11:Article No. 217. PNNL-SA-126576. doi:10.3390/atmos8110217
Murphy B.N., M.C. Woody, J.L. Jimenez, A.G. Carlton, P. Hayes, S. Liu, and N.L. Ng, et al. 2017. "Semivolatile POA and parameterized total combustion SOA in CMAQv5.2: impacts on source strength and partitioning." Atmospheric Chemistry and Physics 17, no. 18:11107-11133. PNNL-SA-124491. doi:10.5194/acp-17-11107-2017
Ng N.L., S. Brown, A.T. Archibald, E. Atlas, R.C. Cohen, J.N. Crowley, and D. Day, et al. 2017. "Nitrate radicals and biogenic volatile organic compounds: oxidation, mechanisms and organic aerosol." Atmospheric Chemistry and Physics 17, no. 3:2103-2162. PNNL-SA-120016. doi:10.5194/acp-17-2103-2017
O'Meara S., D. Topping, R.A. Zaveri, and G. McFiggans. 2017. "An efficient approach for treating composition-dependent diffusion within organic particles." Atmospheric Chemistry and Physics 17, no. 17:10477-10494. PNNL-SA-122836. doi:10.5194/acp-17-10477-2017
Shrivastava M.B., C. Cappa, J. Fan, A.H. Goldstein, A.B. Guenther, J.L. Jimenez, and C. Kuang, et al. 2017. "Recent advances in understanding secondary organic aerosol: implications for global climate forcing." Reviews of Geophysics 55, no. 2:509-559. PNNL-SA-121416. doi:10.1002/2016RG000540
Zhong S., and R.A. Zaveri. 2017. "Atmospheric aerosols." In The International Encyclopedia of Geography: People, the Earth, Environment and Technology, edited by D. Richardson, et al. Hoboken, New Jersey:John Wiley and Sons. PNNL-SA-100861. doi:10.1002/9781118786352.wbieg0304

2016

Cappa C., K.R. Kolesar, X. Zhang, D.B. Atkinson, M.S. Pekour, R.A. Zaveri, and A. Zelenyuk, et al. 2016. "Understanding the Optical Properties of Ambient Sub- and Supermicron Particulate Matter: Results from the CARES 2010 Field Study in Northern California." Atmospheric Chemistry and Physics 16, no. 10:6511-6535. PNNL-SA-115205. doi:10.5194/acp-16-6511-2016
Ching P., R.A. Zaveri, R.C. Easter, N. Riemer, and J.D. Fast. 2016. "A three-dimensional sectional representation of aerosol mixing state for simulating optical properties and cloud condensation nuclei." Journal of Geophysical Research: Atmospheres 121, no. 10:5912-5929. PNNL-SA-112961. doi:10.1002/2015JD024323
Fast J.D., L.K. Berg, K. Zhang, R.C. Easter, R.A. Ferrare, J. Hair, and C.A. Hostetler, et al. 2016. "Model Representations of Aerosol Layers Transported from North America over the Atlantic Ocean during the Two-Column Aerosol Project." Journal of Geophysical Research: Atmospheres 121, no. 16:9814-9848. PNNL-SA-119932. doi:10.1002/2016JD025248
Kleinman L.I., C. Kuang, A. Sedlacek, G.I. Senum, S.R. Springston, J. Wang, and Q. Zhang, et al. 2016. "What do Correlations tell us about Anthropogenic - Biogenic Interactions and SOA Formation in the Sacramento Plume during CARES?." Atmospheric Chemistry and Physics 16, no. 3:1729-1746. PNNL-SA-110254. doi:10.5194/acp-16-1729-2016
Kulkarni G.R., S. China, S. Liu, M.I. Nandasiri, N. Sharma, J.M. Wilson, and A.C. Aiken, et al. 2016. "Ice nucleation activity of diesel soot particles at Cirrus relevant conditions: Effects of hydration, secondary organics coating, hydration, soot morphology, and coagulation." Geophysical Research Letters 43, no. 7:3580-3588. PNNL-SA-113363. doi:10.1002/2016GL068707
Liu J., E. D'Ambro, B.H. Lee, F.D. Lopez-Hilfiker, R.A. Zaveri, J. Rivera-Rios, and F.N. Keutsch, et al. 2016. "Efficient isoprene secondary organic aerosol formation from a non-IEPOX pathway." Environmental Science & Technology 50, no. 18:9872-9880. PNNL-SA-117433. doi:10.1021/acs.est.6b01872
Liu P., Y. Li, Y. Wang, M.K. Giles, R.A. Zaveri, A.K. Bertram, and S.T. Martin, et al. 2016. "Lability of Secondary Organic Particulate Matter." Proceedings of the National Academy of Sciences (PNAS) 113, no. 45:12643-12648. PNNL-SA-115585. doi:10.1073/pnas.1603138113
Song M., P. Liu, S. Hanna, R.A. Zaveri, K. Potter, Y. You, and S.T. Martin, et al. 2016. "Relative humidity--dependent viscosity of secondary organic material�from�toluene� photo--oxidation�and�possible�implications for organic particulate matter over megacities." Atmospheric Chemistry and Physics 16, no. 14:8817-8830. PNNL-SA-115516. doi:10.5194/acp-16-8817-2016

2015

China S., G.R. Kulkarni, B. Scarnatio, N. Sharma, M.S. Pekour, J.E. Shilling, and J.M. Wilson, et al. 2015. "Morphology Of Diesel Soot Residuals From Supercooled Water Droplets And Ice Crystals: Implications For Optical Properties." Environmental Research Letters 10. PNNL-SA-112661. doi:10.1088/1748-9326/10/11/114010
Lowe D., S. Archer-Nicholls, W. Morgan, J.D. Allan, S. Utembe, B. Ouyang, and E. Aruffo, et al. 2015. "WRF-Chem Model Predictions of the Regional Impacts of N2O5 Heterogeneous Processes on Night-Time Chemistry over North-Western Europe." Atmospheric Chemistry and Physics 15, no. 3:1385-1409. PNNL-SA-105954. doi:10.5194/acp-15-1385-2015
Lupascu A., R.C. Easter, R.A. Zaveri, M.B. Shrivastava, M.S. Pekour, J.M. Tomlinson, and Q. Yang, et al. 2015. "Modeling particle nucleation and growth over northern California during the 2010 CARES campaign." Atmospheric Chemistry and Physics 15, no. 21:12283-12313. PNWD-SA-10502. doi:10.5194/acp-15-12283-2015

2014

Archer-Nicholls S., D. Lowe, S. Utembe, J.D. Allan, R.A. Zaveri, J.D. Fast, and O. Hodnebrog, et al. 2014. "Gaseous Chemistry and Aerosol Mechanism Developments for Version 3.5.1 of the Online Regional Model, WRF-Chem." Geoscientific Model Development 7, no. 6:2557-2579. PNNL-SA-100202. doi:10.5194/gmd-7-2557-2014
Fast J.D., J.D. Allan, R. Bahreini, J.S. Craven, L. Emmons, R.A. Ferrare, and P.L. Hayes, et al. 2014. "Modeling regional aerosol and aerosol precursor variability over California and its sensitivity to emissions and long-range transport during the 2010 CalNex and CARES campaigns." Atmospheric Chemistry and Physics 14, no. 18:10013-10060. PNWD-SA-10309. doi:10.5194/acp-14-10013-2014
Kaiser J.C., J. Hendricks, M. Righi, N. Riemer, R.A. Zaveri, S. Metzger, and V. Aquila. 2014. "The MESSy aerosol submodel MADE3 (v2.0b): description and a box model test." Geoscientific Model Development 7, no. 3:1137-1157. PNNL-SA-99000. doi:10.5194/gmd-7-1137-2014
Liu A.T., R.A. Zaveri, and J.H. Seinfeld. 2014. "Technical Note: Analytical Solution for Transient Partitioning and Reaction of a Condensing Vapor Species in a Droplet." Atmospheric Environment 89. PNNL-SA-100164. doi:10.1016/j.atmosenv.2014.02.065
Steiner A.L., A.B. Tawfik, A. Shalaby, A.S. Zakey, M.M. Abdel Wahab, Z. Salah, and F. Solmon, et al. 2014. "Climatological simulations of ozone and atmospheric aerosols in the Greater Cairo region." Climate Research 59, no. 3:207-228. PNNL-SA-96008. doi:10.3354/cr01211
Tsigaridis K., N. Daskalakis, M. Kanakidou, P.J. Adams, P. Artaxo, R. Bahadur, and Y. Balkanski, et al. 2014. "The AeroCom Evaluation and Intercomparison of Organic Aerosol in Global Models." Atmospheric Chemistry and Physics 14, no. 19:10845-10895. PNNL-SA-101226. doi:10.5194/acp-14-10845-2014
Zaveri R.A., R.C. Easter, J.E. Shilling, and J.H. Seinfeld. 2014. "Modeling kinetic partitioning of secondary organic aerosol and size distribution dynamics: representing effects of volatility, phase state, and particle-phase reaction." Atmospheric Chemistry and Physics 14, no. 10:5153-5181. PNNL-SA-97694. doi:10.5194/acp-14-5153-2014

2013

Cappa C.D., T.B. Onasch, P. Massoli, D.R. Worsnop, T.S. Bates, E.S. Cross, and P. Davidovits, et al. 2013. "Response to Comment on “Radiative absorption enhancements due to the mixing state of atmospheric black carbon”." Science 395, no. 6118:393. PNNL-SA-91763. doi:10.1126/science.1230260
Matsui H., M. Koike, Y. Kondo, N. Moteki, J.D. Fast, and R.A. Zaveri. 2013. "Development and validation of a black carbon mixing state resolved three-dimensional model: Aging processes and radiative impact." Journal of Geophysical Research: Atmospheres 118, no. 5:2304-2326. PNNL-SA-89311. doi:10.1029/2012JD018446
Moffet R.C., T. Rodel, S.T. Kelly, X. Yu, G. Carroll, J.D. Fast, and R.A. Zaveri, et al. 2013. "Spectro-Microscopic Measurements of Carbonaceous Aerosol Aging in Central California." Atmospheric Chemistry and Physics 13, no. 20:10445-10459. PNNL-SA-93724. doi:10.5194/acp-13-10445-2013
Shilling J.E., R.A. Zaveri, J.D. Fast, L.I. Kleinman, M.L. Alexander, M.R. Canagaratna, and E. Fortner, et al. 2013. "Enhanced SOA formation from mixed anthropogenic and biogenic emissions during the CARES campaign." Atmospheric Chemistry and Physics 13, no. 4:2091-2113. PNNL-SA-91032. doi:10.5194/acp-13-2091-2013
Shrivastava M.B., A. Zelenyuk, D. Imre, R.C. Easter, J. Beranek, R.A. Zaveri, and J.D. Fast. 2013. "Implications of Low Volatility SOA and Gas-Phase Fragmentation Reactions on SOA Loadings and their Spatial and Temporal Evolution in the Atmosphere." Journal of Geophysical Research: Atmospheres 118, no. 8:3328-3342. PNNL-SA-86882. doi:10.1002/jgrd.50160
Song C., M.S. Gyawali, R.A. Zaveri, J.E. Shilling, and W. Arnott. 2013. "Light Absorption by Secondary Organic Aerosol from a-Pinene: Effects of Oxidants, Seed Aerosol Acidity, and Relative Humidity." Journal of Geophysical Research: Atmospheres 118, no. 20:11,741-11,749. PNNL-SA-94029. doi:10.1002/jgrd.50767

2012

Cahill J.F., K. Suski, J.H. Seinfeld, R.A. Zaveri, and K.A. Prather. 2012. "The mixing state of carbonaceous aerosol particles in northern and southern California measured during CARES and CalNex 2010." Atmospheric Chemistry and Physics 12, no. 22:10989-11002. PNNL-SA-89310. doi:10.5194/acp-12-10989-2012
Cappa C.D., T.B. Onasch, P. Massoli, D.R. Worsnop, T.S. Bates, E.S. Cross, and P. Davidovits, et al. 2012. "Radiative absorption enhancements due to the mixing state of atmospheric black carbon." Science 337, no. 6098:1078-1081. PNNL-SA-85788. doi:10.1126/science.1223447
Fast J.D., W.I. Gustafson, L.K. Berg, W.J. Shaw, M.S. Pekour, M.B. Shrivastava, and J.C. Barnard, et al. 2012. "Transport and Mixing Patterns over Central California during the Carbonaceous Aerosol and Radiative Effects Study (CARES)." Atmospheric Chemistry and Physics 12, no. 4:1759-1783. PNNL-SA-83353. doi:10.5194/acp-12-1759-2012
Gantt B., J. Xu, N. Meskhidze, Y. Zhang, A. Nenes, S.J. Ghan, and X. Liu, et al. 2012. "Global Distribution and Climate Forcing of Marine Organic Aerosol - Part 2: Effects on Cloud Properties and Radiative Forcing." Atmospheric Chemistry and Physics 12, no. 14:6555-6563. PNNL-SA-86189. doi:10.5194/acp-12-6555-2012
Ghan S.J., X. Liu, R.C. Easter, R.A. Zaveri, P.J. Rasch, J. Yoon, and B. Eaton. 2012. "Toward a Minimal Representation of Aerosols in Climate Models: Comparative Decomposition of Aerosol Direct, Semidirect, and Indirect Radiative Forcing." Journal of Climate 25, no. 19:6461-6476. PNNL-SA-83260. doi:10.1175/JCLI-D-11-00650.1
Gyawali M.S., W. Arnott, R.A. Zaveri, C. Song, H. Moosmuller, H. Moosmuller, and L. Liu, et al. 2012. "Photoacoustic optical properties at UV, VIS, and near IR wavelengths for laboratory generated and winter time ambient urban aerosols." Atmospheric Chemistry and Physics 12, no. 5:2587-2601. PNNL-SA-87127. doi:10.5194/acp-12-2587-2012
Laskin A., R.C. Moffet, M.K. Gilles, J.D. Fast, R.A. Zaveri, B. Wang, and P. Nigge, et al. 2012. "Tropospheric Chemistry of Internally Mixed Sea Salt and Organic Particles: Surprising Reactivity of NaCl with Weak Organic Acids." Journal of Geophysical Research: Atmospheres 117. PNNL-SA-87414. doi:10.1029/2012JD017743
Liu S., J.E. Shilling, C. Song, N. Hiranuma, R.A. Zaveri, and L.M. Russell. 2012. "Hydrolysis of organonitrate functional groups in aerosol particles." Aerosol Science and Technology 46, no. 12:1359-1369. PNNL-SA-87795. doi:10.1080/02786826.2012.716175
Liu X., R.C. Easter, S.J. Ghan, R.A. Zaveri, P.J. Rasch, X. Shi, and J. Lamarque, et al. 2012. "Toward a Minimal Representation of Aerosols in Climate Models: Description and Evaluation in the Community Atmosphere Model CAM5." Geoscientific Model Development 5, no. 3:709-739. PNNL-SA-83678. doi:10.5194/gmd-5-709-2012
Setyan A., Q. Zhang, M. Merkel, W.B. Knighton, Y. Sun, C. Song, and J.E. Shilling, et al. 2012. "Characterization of submicron particles influenced by mixed biogenic and anthropogenic emissions using high-resolution aerosol mass spectrometry: results from CARES." Atmospheric Chemistry and Physics 12, no. 17:8131-8156. PNNL-SA-86147. doi:10.5194/acp-12-8131-2012
Shalaby A.K., A.S. Zakey, A.B. Tawfik, F. Solmon, F. Giorgi, F. Stordal, and S. Sillman, et al. 2012. "Implementation and evaluation of online gas-phase chemistry within a regional climate model (RegCM-CHEM4)." Geoscientific Model Development 5, no. 3:741-760. PNNL-SA-86150. doi:10.5194/gmd-5-741-2012
Zaveri R.A., W.J. Shaw, D.J. Cziczo, B. Schmid, R. Ferrare, M.L. Alexander, and M. Alexandrov, et al. 2012. "Overview of the 2010 Carbonaceous Aerosols and Radiative Effects Study (CARES)." Atmospheric Chemistry and Physics 12, no. 16:7647-7687. PNNL-SA-84648. doi:10.5194/acp-12-7647-2012

2011

Berkowitz C.M., L.K. Berg, X. Yu, M.L. Alexander, A. Laskin, R.A. Zaveri, and B.T. Jobson, et al. 2011. "The Influence of Fog and Airmass History on Aerosol Optical, Physical and Chemical Properties at Pt. Reyes National Seashore." Atmospheric Environment 45, no. 15:2259-2568. PNNL-SA-74938. doi:10.1016/j.atmosenv.2011.02.016
Dzepina K., C.D. Cappa, R.M. Volkamer, S. Madronich, P. DeCarlo, R.A. Zaveri, and J.L. Jimenez. 2011. "Modeling the Multiday Evolution and Aging of Secondary Organic Aerosol During MILAGRO 2006." Environmental Science & Technology 45, no. 8:3496-3503. PNNL-SA-75470. doi:10.1021/es103186f
Fast J.D., W.I. Gustafson, E.G. Chapman, R.C. Easter, J.P. Rishel, R.A. Zaveri, and G. Grell, et al. 2011. "The Aerosol Modeling Testbed: A community tool to objectively evaluate aerosol process modules." Bulletin of the American Meteorological Society 92, no. 3:343-360. PNNL-SA-70296. doi:10.1175/2010BAMS2868.1
Lee-Taylor J., S. Madronich, B. Aumont, A. Baker, M. Camredon, A. Hodzic, and G.S. Tyndall, et al. 2011. "Explicit modeling of organic chemistry and secondary organic aerosol partitioning for Mexico City and its outflow plume." Atmospheric Chemistry and Physics 11, no. 24:13219-13241. PNNL-SA-80346. doi:10.5194/acp-11-13219-2011
Matsui H., M. Koike, Y. Kondo, N. Takegawa, A. Wiedensohler, J.D. Fast, and R.A. Zaveri. 2011. "Impact of new particle formation on the concentrations of aerosol number and cloud condensation nuclei around Beijing." Journal of Geophysical Research: Atmospheres 116. PNNL-SA-83352. doi:10.1029/2011JD016025
Meskhidze N., J. Xu, B. Gantt, Y. Zhang, A. Nenes, S.J. Ghan, and X. Liu, et al. 2011. "Global distribution and climate forcing of marine organic aerosol: 1. Model improvements and evaluation." Atmospheric Chemistry and Physics 11, no. 22:11689-11705. PNNL-SA-84328. doi:10.5194/acp-11-11689-2011
Shrivastava M.B., J.D. Fast, R.C. Easter, W.I. Gustafson, R.A. Zaveri, J.L. Jimenez, and P. Saide, et al. 2011. "Modeling Organic Aerosols in a Megacity: Comparison of Simple and Complex Representations of the Volatility Basis Set Approach." Atmospheric Chemistry and Physics 11, no. 13:6639-6662. PNNL-SA-75763. doi:10.5194/acp-11-6639-2011
Song C., R.A. Zaveri, J.E. Shilling, M.L. Alexander, and M.K. Newburn. 2011. "Effect of Hydrophilic Organic Seed Aerosols on Secondary Organic Aerosol Formation from Ozonolysis of a-Pinene." Environmental Science & Technology 45, no. 17:7323-7329. PNNL-SA-78982. doi:10.1021/es201225c

2010

Apel E., L. Emmons, T.G. Karl, F.M. Flocke, F.M. Flocke, A.J. Hills, and S. Madronich, et al. 2010. "Chemical evolution of volatile organic compounds in the outflow of the Mexico City Metropolitan area." Atmospheric Chemistry and Physics 10, no. 5:2353-2375. PNNL-SA-69301. doi:10.5194/acp-10-2353-2010
Riemer N., M. West, M. West, R.A. Zaveri, and R.C. Easter. 2010. "Estimating Black Carbon Aging Time-Scales with a Particle-Resolved Aerosol Model." Journal of Aerosol Science. PNNL-SA-64948.
Subramanian R., G.L. Kok, D. Baumgardner, A.D. Clarke, A.D. Clarke, Y. Shinozuka, and T. Campos, et al. 2010. "Black carbon over Mexico: The effect of atmospheric transport on mixing state, mass absorption cross-section, and BC/CO ratios." Atmospheric Chemistry and Physics 10, no. 1:219-237. PNNL-SA-68997.
Vaden T.D., C. Song, R.A. Zaveri, D. Imre, and A. Zelenyuk. 2010. "Morphology of Mixed Primary and Secondary Organic Particles and the Adsorption of Spectator Organic Gases during Aerosol Formation." Proceedings of the National Academy of Sciences of the United States of America 107, no. 15:6658-6663. PNNL-SA-68577. doi:10.1073/pnas.0911206107
Voss P.B., R.A. Zaveri, F.M. Flocke, F.M. Flocke, H. Mao, T. Hartley, and P. DeAmicis, et al. 2010. "Long-range pollution transport during the MILAGRO-2006 campaign: a case study of a major Mexico City outflow event using free-floating altitude-controlled balloons." Atmospheric Chemistry and Physics 10, no. 15:7137-7159. PNNL-SA-70484. doi:10.5194/acp-10-7137-2010
Zaveri R.A., C.M. Berkowitz, F.J. Brechtel, M.K. Gilles, J.M. Hubbe, J.T. Jayne, and L.I. Kleinman, et al. 2010. "Nighttime chemical evolution of aerosol and trace gases in a power plant plume: Implications for secondary organic nitrate and organosulfate aerosol formation, NO3 radical chemistry, and N2O5 heterogeneous hydrolysis." Journal of Geophysical Research. D. (Atmospheres) 115. PNNL-SA-68336. doi:10.1029/2009JD013250
Zaveri R.A., J.C. Barnard, R.C. Easter, N. Riemer, and M. West. 2010. "Particle-resolved simulation of aerosol size, composition, mixing state, and the associated optical and cloud condensation nuclei activation properties in an evolving urban plume." Journal of Geophysical Research. D. (Atmospheres) 115. PNNL-SA-69778. doi:10.1029/2009JD013616
Zaveri R.A., P.B. Voss, C.M. Berkowitz, E. Fortner, J. Zheng, R. Zhang, and R.J. Valente, et al. 2010. "Overnight atmospheric transport and chemical processing of photochemically aged Houston urban and petrochemical industrial plume." Journal of Geophysical Research. D. (Atmospheres) 115. PNWD-SA-8779. doi:10.1029/2009JD013495

2009

de Gouw J.A., D. Welsh-Bon, C. Warneke, W.C. Kuster, M.L. Alexander, A.K. Baker, and A.K. Baker, et al. 2009. "Emission and Chemistry of Organic Carbon in the Gas and Aerosol Phase at a Sub-Urban Site Near Mexico City in March 2006 During the MILAGRO Study." Atmospheric Chemistry and Physics 9, no. 10:3425-3442. PNNL-SA-62891.
Fast J.D., A. Aiken, J.D. Allan, M.L. Alexander, T. Campos, M.R. Canagaratna, and E.G. Chapman, et al. 2009. "Evaluating Simulated Primary Anthropogenic and Biomass Burning Organic Aerosols during MILAGRO: Implications for Assessing Treatments of Secondary Organic Aerosols." Atmospheric Chemistry and Physics 9, no. 16:6191-6215. PNNL-SA-63810.
Kleinman L.I., S.R. Springston, J.X. Wang, P.H. Daum, Y.N. Lee, L.J. Nunnermacker, and G. Senum, et al. 2009. "The Time Evolution of Aerosol Size Distribution Over the Mexico City Plateau." Atmospheric Chemistry and Physics 9, no. 13:4261-4278. PNNL-SA-63307.
Matsui H., M. Koike, Y. Kondo, N. Takegawa, K. Kita, Y. Miyazaki, and M. Hu, et al. 2009. "Spatial and Temporal Variations of Aerosols Around Beijing in the Summer 2006: Model Evaluation and Source Apportionment." Journal of Geophysical Research. D. (Atmospheres) 114. PNNL-SA-62131. doi:10.1029/2008JD010906
Riemer N., M. West, M. West, R.A. Zaveri, and R.C. Easter. 2009. "Simulating the Evolution of Soot Mixing State with a Particle-Resolved Aerosol Model." Journal of Geophysical Research. D. (Atmospheres) 114. PNNL-SA-62300. doi:10.1029/2008JD011073

2008

Hopkins R.J., Y. Desyaterik, A.V. Tivanski, R.A. Zaveri, C.M. Berkowitz, T. Tyliszczak, and M.K. Gilles, et al. 2008. "Chemical Speciation of Sulfur in Marine Cloud Droplets and Particles: Analysis of Individual Particles from the Marine Boundary Layer Over the California Current." Journal of Geophysical Research. D. (Atmospheres) 113, no. D4:D04209. PNNL-SA-55376.
Zaveri R.A., R.C. Easter, J.D. Fast, and L.K. Peters. 2008. "Model for Simulating Aerosol Interactions and Chemistry (MOSAIC)." Journal of Geophysical Research. D. (Atmospheres) 113, no. D13:Art. No. D13204. PNNL-SA-54778. doi:10.1029/2007JD008782
Zelenyuk A., J. Yang, C. Song, R.A. Zaveri, and D.g. Imre. 2008. ""Depth-Profiling" and Quantitative Characterization of the Size, Composition, Shape, Density, and Morphology of Fine Particles with SPLAT, a Single-Particle Mass Spectrometer." Journal of Physical Chemistry A 112, no. 4:669-677. PNNL-SA-56602. doi:10.1021/jp077308y
Zelenyuk A., J. Yang, C. Song, R.A. Zaveri, and D.G. Imre. 2008. "A New Real-Time Method for Determining Particles Sphericity and Density: Application to Secondary Organic Aerosol Formed by Ozonolysis of alpha-Pinene." Environmental Science & Technology 42, no. 21:8033-8038. PNNL-SA-58717. doi:10.1021/es8013562

2007

Ghan S.J., and R.A. Zaveri. 2007. "Parameterization of Optical Properties for Hydrated Internally Mixed Aerosol." Journal of Geophysical Research. D. (Atmospheres) 112, no. D10:D10201. PNNL-SA-48136. doi:10.1029/2006JD007927
Kleinman L.I., P.H. Daum, Y.N. Lee, G. Senum, S.R. Springston, J. Wang, and C.M. Berkowitz, et al. 2007. "Aircraft Observations of Aerosol Composition and Ageing in New England and Mid-Atlantic States during the Summer 2002 New England Air Quality Study Field Campaign." Journal of Geophysical Research. D. (Atmospheres) 112, no. D9:D09310. PNNL-SA-48134. doi:10.1029/2006JD007786
Song C., R.A. Zaveri, M.L. Alexander, J.A. Thornton, S. Madronich, J.V. Ortega, and A. Zelenyuk, et al. 2007. "Effect of Hydrophobic Primary Organic Aerosols on Secondary Organic Aerosol Formation from Ozonolysis of a-Pinene." Geophysical Research Letters 34, no. 20:Paper # L20803. PNNL-SA-55416. doi:10.1029/2007GL030720

2006

Fast J.D., W.I. Gustafson, R.C. Easter, R.A. Zaveri, J.C. Barnard, E.G. Chapman, and G. Grell, et al. 2006. "Evolution of Ozone, Particulates, and Aerosol Direct Radiative Forcing in the Vicinity of Houston Using a Fully Coupled Meteorology-Chemistry-Aerosol Model." Journal of Geophysical Research. D. (Atmospheres) 111, no. D21:D21305. PNNL-SA-46870. doi:10.1029/2005JD006721

2005

Voss P.B., D. Holcomb, C.M. Berkowitz, and R.A. Zaveri. 2005. "Integrated System Optimization of Controlled Meteorological (CMET) Balloons." In Proceedings of AIAA's 5th Annual Aviation Technology, Integration, and Operations (ATIO) Conference, AIAA 16th Ligher-than-air Systems Technology Conference, and Balloons Systems Conference, September 26-28, 2005, Arlington, Virginia, 780-783. Reston, Virginia:American Institute of Aeronautics and Astronautics. PNWD-SA-7416.
Zaveri R.A., R.C. Easter, and A.S. Wexler. 2005. "A New Method for Multicomponent Activity Coefficients of Electrolytes in Aqueous Atmospheric Aerosols." Journal of Geophysical Research. D. (Atmospheres) 110, no. D2:D02201. PNNL-SA-40638. doi:10.1029/2004JD004681
Zaveri R.A., R.C. Easter, and L.K. Peters. 2005. "A Computationally Efficient Multicomponent Equilibrium Solver for Aerosols (MESA)." Journal of Geophysical Research. D. (Atmospheres) 110, no. D24:D24203. PNNL-SA-42795. doi:10.1029/2004JD005618
Zhang Y., X. Hu, G. Howell, E.D. Sills, J.D. Fast, W.I. Gustafson, and R.A. Zaveri, et al. 2005. "Modeling Atmospheric Aerosols in WRF/Chem." In 2005 Joint WRF/MM5 User's Workshop, June 27-30, 2005, Boulder, Colorado. Boulder, Colorado:National Center for Atmospheric Research. PNNL-SA-45539.

2004

Easter R.C., S.J. Ghan, Y. Zhang, R.D. Saylor, E.G. Chapman, N.S. Laulainen, and H. Abdul-Razzak, et al. 2004. "MIRAGE: Model Description and Evaluation of Aerosols and Trace Gases." Journal of Geophysical Research. D. (Atmospheres) 109, no. D20:D20210. PNWD-SA-5826. doi:10.1029/2004JD004571
Zaveri R.A., C.M. Berkowitz, J.M. Hubbe, S.R. Springston, F.J. Brechtel, T.B. Onasch, and J.T. Jayne. 2004. "Nighttime Lagrangian Measurements of Aerosols and Oxidants in the Boston Urban Plume: Possible Evidence of Heterogeneous Loss of Ozone." In American Association for Aerosol Research 23rd Annual Conference, October 4-8, 2004, Atlanta, Georgia. Mt. Laurel, New Jersey:American Association for Aerosol Research. PNNL-SA-42290.
Zaveri R.A., R.C. Easter, and A.S. Wexler. 2004. "A Computationally Efficient Model for Multicomponent Activity Coefficients in Aqueous Solutions." In American Association for Aerosol Research 23rd Annual Conference, October 4-8, 2004, Atlanta, Georgia. Mt. Laurel, New Jersey:American Association for Aerosol Research. PNNL-SA-42224.
Zaveri R.A., R.C. Easter, L.K. Peters, and A.S. Wexler. 2004. "A Computationally Efficient Algorithm for Aerosol Phase Equilibrium." In American Association for Aerosol Research 23rd Annual Conference, October 4-8, 2004, Atlanta, Georgia. Mt. Laurel, New Jersey:American Association for Aerosol Research. PNNL-SA-42230.

2003

Berkowitz C.M., R.A. Zaveri, J.M. Hubbe, S.R. Springston, and R.L. Coulter. 2003. "An Overview of the Nighttime Aerosol/Oxidant Plume Experiment (NAOPEX)." In Proceedings of the 2003 Fall AGU Meeting., Abstract No. A51E-0724. Washington, District Of Columbia:American Geophysical Union. PNNL-SA-39299.
Zaveri R.A., C.M. Berkowitz, L.I. Kleinman, S.R. Springston, P.V. Doskey, W.A. Lonneman, and C.W. Spicer. 2003. "Ozone Production Efficiency and NOx Depletion in an Urban Plume: Interpretation of Field Observations and Implications for Evaluating O3-NOx-VOC Sensitivity." Journal of Geophysical Research. D. (Atmospheres) 108, no. D14:4436. PNNL-SA-37439. doi:10.1029/2002JD003144

2002

Berkowitz C.M., R.A. Zaveri, C.W. Spicer, P. Doskey, and J. Weinstein-Lloyd. 2002. "Ozone Production Efficiency at the Williams Tower." In Fourth Conference on Atmospheric Chemistry: Urban, Regional, and Global Scale Impacts of Air Pollutants, 171-174. Boston, Massachusetts:American Meteorological Society. PNNL-SA-35411.
Cho H.M., P.B. Shepson, L.A. Barrie, J.P. Cowin, and R.A. Zaveri. 2002. "NMR Investigation of the Quasi-Brine Layer in Ice/Brine Mixtures." Journal of Physical Chemistry B 106, no. 43:11226-11232. PNNL-SA-35863.
Fast J.D., R.A. Zaveri, R.X. Bian, E.G. Chapman, and R.C. Easter. 2002. "Effect of Regional-Scale Transport on Oxidants in the Vicinity of Philadelphia During the 1999 NE-OPS Field Campaign." Journal of Geophysical Research. D. (Atmospheres) 107, no. D16. PNNL-SA-35004. doi:10.1029/2001JD000980

2001

Berkowitz C.M., R.A. Zaveri, X. Bian, S. Zhong, R.S. Disselkamp, N.S. Laulainen, and E.G. Chapman. 2001. "Aircraft Observations of Aerosols, O3 and NOy in a Nighttime Urban Plume." Atmospheric Environment 35, no. 13:2395-2404. PNNL-SA-33898.
Ghan S.J., R.C. Easter, E.G. Chapman, H. Abdul-Razzak, H. Abdul-Razzak, Y. Zhang, and L. Leung, et al. 2001. "A Physically Based Estimate of Radiative Forcing by Anthropogenic Sulfate Aerosol." Journal of Geophysical Research: Atmospheres 106, no. D6:5279-5293. PNWD-SA-5024. doi:10.1029/2000JD900503

2000

Disselkamp R.S., M.A. Carpenter, J.P. Cowin, C.M. Berkowitz, E.G. Chapman, R.A. Zaveri, and N.S. Laulainen. 2000. "Ozone Loss on Atmospheric Soot Aerosols." Journal of Geophysical Research. D. (Atmospheres) 105, no. D8:9767-9771. PNNL-SA-33141.

1999

Lee P.S., R.A. Zaveri, R.C. Easter, and L.K. Peters. 1999. "Technical Note: On the Parallelization of a Global Climate-Chemistry Modeling System." Atmospheric Environment 33, no. 4:675-681. PNNL-SA-31132.
Zaveri R.A., and L.K. Peters. 1999. "A New Lumped Structure Photochemical Mechanism for Large-Scale Applications." Journal of Geophysical Research. D. (Atmospheres) 104, no. D23:30387-30415. PNNL-SA-30592.