Scientific Investigators

Donald R. Hastie, York, Centre for Atmospheric Chemistry

Professor of Chemistry who studies oxidation in the troposphere, including radical chemistry and organic oxidation mechanisms. 

His current research utilizes tandem mass spectrometry to study particle formation in flow reactors and in the CAC Smog Chamber facility.  He has taught courses in Atmospheric Chemistry to professionals and is an award winning lecturer.

Douw G. Steyn, British Columbia, Earth and Ocean Sciences

He specializes in air pollution meteorology, photochemical modeling, modeling in complex terrains, regional model evaluation, boundary layer &

mesoscale meteorology.  He is a recognized expert in air quality issues in the Lower Fraser Valley and is a member of the UBC Institute of Applied Mathematics, among other prominent institutes.

Hans Osthoff, Calgary, Chemistry

Assistant Professor whose research focuses on nitrogen oxide and halogen chemistry in the troposphere and their effects on air quality. 

His group is developing advanced state-of-the-art instrumentation for sensitive measurement of atmospheric pollutants (CARDS, CIMS, etc.) in both the laboratory and the field.  His recent publications in Nature Geoscience and Science, indicates Hans is a future star in the atmospheric community.

James J. A. Whiteway, York, Earth and Space Science and Engineering

Canada Research Chair in Space Engineering and Atmospheric Science and Canadian principle investigator for the highly successful Phoenix Mars Lander-2008.  He is also Director of CRESS

The technical basis of his research is development of lidar for atmospheric measurements from the ground, from high altitude aircraft, and on Mars.  Applications include the study of climate, atmospheric dynamics, air quality, arctic ozone, biomass burning and the Martian atmosphere.  Along with McConnell, he will be contributing to the development of instrumentation for the Mars mission in 2016 aboard EXOMars.

Jennifer Murphy, Toronto, Chemistry

Assistant Professor and Canada Research Chair in Atmospheric and Environmental Chemistry. 

Her research interests are atmospheric chemistry, air quality and biogeochemistry, focusing on sources, sinks and transformations of atmospheric nitrogen.  She has participated in field campaigns in North America, Europe and Africa and has established a long-term monitoring site to study the carbon and nitrogen cycles at a forest in Central Ontario.

Jochen Rudolph, York University, Centre for Atmospheric Chemistry, IACPES Training Program Director

Professor and Chair of Chemistry at York U.  He is internationally recognized for expertise in the measurements and fate of VOCs, including pioneering techniques for the use of stable isotope ratio measurements in studies of VOCs. His current research interest is on using isotope ratio measurements to investigate secondary organic particulate matter formation. His experience covers a wide range of fields and disciplines.

With a degree in Chemical Engineering he conducted his dissertation research in the area of Nuclear Chemistry.  He then worked in industry before starting his research career in Atmospheric Chemistry.  He had ten years experience as leader of a research group in a National Laboratory in Germany before joining CAC at York University.  His research has resulted in intense collaboration (including co-supervision of MSc and PhDs) with researchers in Chemistry, Oceanography, Biology, Physics, and Meteorology.

Peter A. Taylor, York, Earth and Space Science and Engineering

(CRESS-York U) is a boundary layer/mesoscale meteorologist. He operates the ESSE Meteorological Observation Station and partners in the O-Qnet of VHF wind profilers, which provide hourly wind profiles from 250 m to 13.5 km from 10 sites in Ontario and Quebec. 

He has research interests in land surface processes, air flow in complex terrains, blowing snow, lake breezes and their impact on severe weather and air quality, air sea interactions, and wind energy applications. He was also a contributing scientist to the Phoenix Mars Lander Mission in 2008.

Randall Martin, Dalhousie, Physics and Atmospheric Science

Randall Martin is the Killam Professor in the Department of Physics and Atmospheric Science at Dalhousie University, and a Research Associate at the Harvard-Smithsonian Center for Astrophysics. 

Dr. Martin is a recipient of the Langstroth Memorial Teaching Award, an NSERC Discovery Accelerator Supplement, and a Killam Prize for exceptional young scientists. He has published more than 70 peer-reviewed journal articles on satellite remote sensing and global modeling of atmospheric composition.  He serves as Co-Model Scientist for the GEOS-Chem global model of atmospheric composition (  More information about his research is available at

Robert McLaren, York, Centre for Atmospheric Chemistry

Associate Professor in chemistry and Director of the Centre for Atmospheric Chemistry (CAC). 

He has research interests in chemical processes in the atmosphere, including ozone and aerosol formation mechanisms and nighttime chemistry.  He uses DOAS, MAX-DOAS and lunar-DOAS methods for boundary layer and vertical column measurements of chemical species in the atmosphere, with a special focus on nitrogen chemistry.

Wayne Hocking, Western Ontario, Physics and Astronomy

Professor of Physics who studies dynamical motions in the atmosphere at heights from 0 to 100 km altitude.

He uses radar, radiosonde balloons, high resolution turbulence probes and theoretical modeling.  He led a team of researchers in the construction of a CFI funded network of wind profiler radars in Ontario & Quebec.  He has taught on atmospheric radar and physics in Canada, Australia, USA, Japan, Taiwan, and India.

Funding for this Program is Provided by NSERC.


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