Kanji, Zamin Hussein, Dr.

ETH Zürich Dr. Zamin Hussein Abdulali Kanji Institut f. Atmosphäre und Klima CHN P 17.2 Universitätstrasse 16 8092 Zuerich Phone: +41 44 632 81 88 E-Mail:

Current Research Interests

Heterogeneous Ice Nucleation in the Atmosphere

• Investigations to identify important ice formation conditions such as relative humidity and temperature for initiation of the ice phase onto particles that are used as proxies for natural and anthropogenic aerosols in the atmosphere. This is done for deposition and condensation modes of freezing using a Continuous Flow Thermal Gradient Diffusion Chamber (CFDC).

• Influence of surface modification and chemical composition of aerosols on ice formation properties:
  A) Aerosol exposure to trace gases
  B) Aerosol processing with organic particulate and ozone (to represent oxidative processes).

• Effects of aerosol size on ice formation conditions:
  Identifying the size and temperature at which certain ice formation mechanisms become active. An example of a question would be: What is the temperature (range) at which a 200 nm mineral dust particle begins to form ice in the deposition mode?

Publications

• Chou, C., Kanji, Z. A., Stetzer, O., Tritscher, T., Chirico, R., Heringa, M. F., Weingartner, E., Prévôt, A. S. H., Baltensperger, U., and Lohmann, U.: Effect of photochemical ageing on the ice nucleation properties of diesel and wood burning particles, Atmospheric Chemistry and Physics , 13, 761-772, DOI:10.5194/acp-13-761-2013, 2013.

• Welti, A., Lüönd, F., Kanji, Z. A., Stetzer, O., and Lohmann, U.: Time dependence of immersion freezing: an experimental study on size selected kaolinite particles, Atmospheric Chemistry and Physics 12, 9893-9907, DOI:10.5194/acp-12-9893-2012, 2012

• DeMott, P.J., Möhler, O., Stetzer, O., Vali, G., Levin, Z., Petters, M. D., Murakami, M., Leisner, T., Bundke, U., Klein, H., Kanji, Z. A., Cotton, R., Jones, H., Benz, S., Brinkmann, M., Rzesanke, D., Saathoff, H., Nicolet, M., Saito, A., Nillius, B., Bingemer, H., Abbatt, J. P. D., Ardon, K., Ganor, E., Georgakopoulos, D. G., Saunders, C. Resurgence in Ice Nuclei Measurement Research (2011). Bulletin of American Meteorological Society, 92, 1623-1635, DOI:10.1175/2011BAMS3119.1

• Chou, C., Stetzer, O., Weingartner, E., Juranyi, Z., Kanji, Z. A. and Lohmann, U. Ice Nuclei Properties within a Saharan dust event at the Jungfraujoch in the Swiss Alps (2011). Atmospheric Chemistry and Physics, 11(10), 4725-4738, DOI:10.5194/acp-11-4725-2011

• Kanji, Z. A., P.J. DeMott, O. Möhler and J. P. D. Abbatt. Results from the University of Toronto Continuous Flow Diffusion Chamber at ICIS 2007: Instrument intercomparison and ice onsets for different aerosol types, (2011). Atmospheric Chemistry and Physics, 11(1), 31-41, DOI: 10.5194/acp-11-31-2011.

• Kanji, Z. A. and J. P. D. Abbatt. Ice Nucleation onto Arizona Test Dust at Cirrus Temperatures: Effect of Temperature and Aerosol Size on Onset Relative Humidity (2009). Journal of Physical Chemistry A, 114(2), 935-941. DOI: 10.1021/jp908661m

• Kanji, Z. A. and J. P. D. Abbatt. The University of Toronto Continuous Flow Diffusion Chamber (UT-CFDC): A Simple Design for Ice Nucleation Studies (2009), Aerosol Science and Technology, 43: 730-738. DOI: 10.1080/02786820902889861

• Kanji, Z. A., O. Florea and J. P. D. Abbatt. Ice formation via deposition nucleation on mineral dust and organics: dependence of onset relative humidity on total particulate surface area (2008), Environmental Research Letters 3(2). DOI: 10.1088/1748-9326/3/2/025004

• Abbatt, J. P. D., Benz, S., Cziczo, D. J., Kanji, Z., Lohmann, U., and Mohler O. Solid ammonium sulfate aerosols as ice nuclei: A pathway for cirrus cloud formation (2006), Science, 303, 1770-1773. DOI: 10.1126/science.1129726

• Kanji, Z. and J. P. D. Abbatt. Laboratory studies of ice formation via deposition mode nucleation onto mineral dust and n-hexane soot samples (2006), Journal of Geophysical Research – Atmospheres. DOI: 10.1029/2005JD006766.

• Wang, Bin; Abdulali-Kanji, Zamin; Dodwell, Emily; Horton, J. Hugh; Oleschuk, Richard D. Surface characterization using chemical force microscopy and the flow performance of modified polydimethylsiloxane for microfluidic device applications. Electrophoresis (2003), 24(9), 1442-1450

• Wang, Bin; Chen, Lu; Abdulali-Kanji, Zamin; Horton, J. Hugh; Oleschuk, Richard D. Aging Effects on oxidized and amine-modified polydimethylsiloxane surfaces studied with chemical force titrations: Effects on electroosmotic flow rate in microfluidic channels. Langmuir (2003), 19(23), 9792-9798