Field Work 

We have been involved with numerous airborne and ground-based field intensive projects with a few recent ones including CAMP2Ex, ACTIVATE, and MONARC. The goal of most such projects is a detailed characterization of the sources, properties, and general life cycle of aerosol particles. Furthermore, we are interested in investigating the relationships between aerosol particles, clouds, precipitation, and meteorology.

Selected Publications

Sorooshian, A., Anderson, B., Bauer, S. E., Braun, R. A., Cairns, B., Crosbie, E., Dadashazar, H., Diskin, G., Ferrare, R., Flagan, R. C., Hair, J., Hostetler, C., Jonsson, H. H., Kleb, M. M., Liu, H. Y., MacDonald, A. B., McComiskey, A., Moore, R., Painemal, D., Russell, L. M., Seinfeld, J. H., Shook, M., Smith, W. L., Thornhill, K., Tselioudis, G., Wang, H. L., Zeng, X. B., Zhang, B., Ziemba, L., and Zuidema, P. (2019). Aerosol-Cloud-Meteorology Interaction Airborne Field Investigations: Using Lessons Learned from the US West Coast in the Design of ACTIVATE off the US East Coast. Bulletin of the American Meteorological Society 100, 1511-1528.

Dadashazar, H., Crosbie, E., Majdi, M. S., Panahi, M., Moghaddam, M. A., Behrangi, A., Brunke, M., Zeng, X. B., Jonsson, H. H., and Sorooshian, A. (2020). Stratocumulus cloud clearings: statistics from satellites, reanalysis models, and airborne measurements. Atmospheric Chemistry and Physics 20, 4637-4665.

Schlosser, J. S., Dadashazar, H., Edwards, E. L., Mardi, A. H., Prabhakar, G., Stahl, C., Jonsson, H. H., and Sorooshian, A. (2020). Relationships Between Supermicrometer Sea Salt Aerosol and Marine Boundary Layer Conditions: Insights From Repeated Identical Flight Patterns. Journal of Geophysical Research-Atmospheres 125.

Hilario, M. R. A., Cruz, M. T., Banaga, P. A., Betito, G., Braun, R. A., Stahl, C., Cambaliza, M. O., Lorenzo, G. R., MacDonald, A. B., AzadiAghdam, M., Pabroa, P. C., Yee, J. R., Simpas, J. B., and Sorooshian, A. (2020). Characterizing Weekly Cycles of Particulate Matter in a Coastal Megacity: The Importance of a Seasonal, Size-Resolved, and Chemically Speciated Analysis. Journal of Geophysical Research-Atmospheres 125.

MacDonald, A. B., Mardi, A. H., Dadashazar, H., Aghdam, M. A., Crosbie, E., Jonsson, H. H., Flagan, R. C., Seinfeld, J. H., and Sorooshian, A. (2020). On the relationship between cloud water composition and cloud droplet number concentration. Atmospheric Chemistry and Physics 20, 7645-7665.

Picture of airplane at night


3 guys doing research on an airplane

Aerosol Instrument Projects 

Our group has been active in characterization and optimization of aerosol and cloud instrumentation used in laboratory and field measurements. Examples are the Counterflow Virtual Impactor (CVI) inlet that has been successfully deployed in numerous airborne field missions with the Navy Twin Otter. Our group has a novel version of a Differential Aerosol Sizing and Hygroscopicity Probe (DASH-SP) designed for airborne operation to get rapid measurements of size-resolved aerosol hygroscopic growth factors and the real part of the refractive index. We have collaborative projects with NASA Langley Research Center to deploy new instruments and characterize their performance, such as the new Axial-flow Cyclone Cloud Collector (AC3) and a new application of the Particle-Into-Liquid Sampler to measure ion conductivity.

Selected Publications:

Counterflow Virtual Impactor (CVI)

Shingler, T., Dey, S., Sorooshian, A., Brechtel, F. J., Wang, Z., Metcalf, A., Coggon, M., Mulmenstadt, J., Russell, L. M., Jonsson, H. H., and Seinfeld, J. H. (2012). Characterisation and airborne deployment of a new counterflow virtual impactor inlet. Atmospheric Measurement Techniques 5, 1259-1269.

Image of CVI research

Differential Aerosol Sizing and Hygroscopicity Spectrometer Probe (DASH-SP)

Shingler, T., Crosbie, E., Ortega, A., Shiraiwa, M., Zuend, A., Beyersdorf, A., Ziemba, L., Anderson, B., Thornhill, L., Perring, A. E., Schwarz, J. P., Campazano-Jost, P., Day, D. A., Jimenez, J. L., Hair, J. W., Mikoviny, T., Wisthaler, A., and Sorooshian, A. (2016). Airborne characterization of subsaturated aerosol hygroscopicity and dry refractive index from the surface to 6.5 km during the SEAC4RS campaign. Journal of Geophysical Research-Atmospheres 121, 4188-4210.

Aldhaif, A. M., Stahl, C., Braun, R. A., Moghaddam, M. A., Shingler, T., Crosbie, E., Sawamura, P., Dadashazar, H., Ziemba, L., Jimenez, J. L., Campuzano-Jost, P., and Sorooshian, A. (2018). Characterization of the Real Part of Dry Aerosol Refractive Index Over North America From the Surface to 12km. Journal of Geophysical Research-Atmospheres 123, 8283-8300.

Axial-flow Cyclone Cloud Collector (AC3)

Crosbie, E., Brown, M. D., Shook, M., Ziemba, L., Moore, R. H., Shingler, T., Winstead, E., Thornhill, K. L., Robinson, C., MacDonald, A. B., Dadashazar, H., Sorooshian, A., Beyersdorf, A., Eugene, A., Collett, J., Straub, D., and Anderson, B. (2018). Development and characterization of a high-efficiency, aircraft-based axial cyclone cloud water collector. Atmospheric Measurement Techniques 11, 5025-5048.

Researcher taking samples from airplane

Particle-Into-Liquid Sampler (PILS)

Crosbie, E., Shook, M. A., Ziemba, L. D., Anderson, B. E., Braun, R. A., Brown, M. D., Jordan, C. E., MacDonald, A. B., Moore, R. H., Nowak, J. B., Robinson, C. E., Shingler, T., Sorooshian, A., Stahl, C., Thornhill, K. L., Wiggins, E. B., and Winstead, E. (2020). Coupling an online ion conductivity measurement with the particle-into-liquid sampler: Evaluation and modeling using laboratory and field aerosol data. Aerosol Science and Technology.

Laboratory Research 

With our extensive suite of instrumentation, we are interested in various types of laboratory-scale research projects such as characterizing hygroscopic and optical properties of aerosols varying in their chemical properties. Most recently, we have been collaborating with other departments at the U of A on a COVID-related effort to test the efficacy of different types of masks (including 3-D printed masks) in filtering particles of different sizes.

Selected Publications:

Miller, D. C., Beamer, P., Billheimer, D., Subbian, V., Sorooshian, A., Campbell, B. S., and Mosier, J. M. (2020). Aerosol Risk with Noninvasive Respiratory Support in Patients with COVID-19. J Am Coll Emerg Physicians Open doi:10.1002/emp2.12152.

Sorooshian, A., Hersey, S., Brechtel, F. J., Corless, A., Flagan, R. C., and Seinfeld, J. H. (2008). Rapid, size-resolved aerosol hygroscopic growth measurements: Differential aerosol sizing and hygroscopicity spectrometer probe (DASH-SP). Aerosol Science and Technology 42, 445-464.

3 researchers doing work

Mining Research 

A representative natural laboratory to investigate aerosol properties from mining and smelting emissions and subsequent effects on living beings is Arizona especially because of extensive past and present mining across the state and a rapidly growing population that contains two communities that are especially vulnerable to the effects of aerosol particles: a large number of retirees who suffer from respiratory and cardiovascular diseases. We have been active in characterizing aerosol emissions from active and legacy mining sites across Arizona, with a focus on size-resolved composition, morphology, and hygroscopicity. We are pursuing current projects both in Arizona and the Middle East to study aerosol emissions from mining sites and to further examine the effects of weather and dust suppression methods in reducing mining emissions.

Selected Publications:

Sorooshian, A., Csavina, J., Shingler, T., Dey, S., Brechtel, F. J., Saez, A. E., and Betterton, E. A. (2012). Hygroscopic and Chemical Properties of Aerosols Collected near a Copper Smelter: Implications for Public and Environmental Health. Environmental Science & Technology 46, 9473-9480.

Youn, J. S., Csavina, J., Rine, K. P., Shingler, T., Taylor, M. P., Saez, A. E., Betterton, E. A., and Sorooshian, A. (2016). Hygroscopic Properties and Respiratory System Deposition Behavior of Particulate Matter Emitted By Mining and Smelting Operations. Environmental Science & Technology 50, 11706-11713.

Global Air Quality Studies   

While we conduct extensive research with datasets we collect in either the field or lab, we also use existing datasets archived on public repositories to study both aerosol and wet deposition physicochemical properties around the world. These projects often include data analysis techniques relevant to ‘big data’ including diverse types of machine learning methods.

Selected Publications:

Ma, L., Dadashazar, H., Hilario, M. R. A., Cambaliza, M. O., Lorenzo, G. R., Simpas, J. B., Nguyen, P., and Sorooshian, A. (2020). Contrasting wet deposition composition between three diverse islands and coastal North American sites. Atmospheric Environment, 117919.

Mardi, A. H., Khaghani, A., MacDonald, A. B., Nguyen, P., Karimi, N., Heidary, P., Karimi, N., Saemian, P., Sehatkashani, S., Tajrishy, M., and Sorooshian, A. (2018). The Lake Urmia environmental disaster in Iran: A look at aerosol pollution. Science of the Total Environment 633, 42-49.

Mora, M., Braun, R. A., Shingler, T., and Sorooshian, A. (2017). Analysis of remotely sensed and surface data of aerosols and meteorology for the Mexico Megalopolis Area between 2003 and 2015. Journal of Geophysical Research-Atmospheres 122, 8705-8723.

Crosbie, E., Sorooshian, A., Monfared, N. A., Shingler, T., and Esmaili, O. (2014). A Multi-Year Aerosol Characterization for the Greater Tehran Area Using Satellite, Surface, and Modeling Data. Atmosphere 5, 178-197.