Group Members

Randall Martin
Arthur B. McDonald Chair of
Research Excellence
Personal Website
randall.martin@dal.ca
I am motivated by concerns for our environment. My group applies numerical models and a range of measurements to provide quantitative information about how natural and anthropogenic processes affect the atmosphere and, in turn, human health.

Brian Boys
Doctoral Student
bboys@dal.ca
Continuous global monitoring of ground-level particulate matter less than 2.5 μ in diameter (PM 2.5) is important for two reasons. One, it contributes to our understanding of aerosol changes as human activity and land use evolve globally. Two, it guides environmental policy as related to air quality; PM 2.5 can adversely affect health and contribute to morbidity and mortality. I’m using a global chemical transport model (GEOS-Chem) to estimate ground-level PM 2.5 from satellite-observed ‘column’ aerosol loading.

Matt Cooper
Postdoctoral Fellow
Personal Website
cooperm2@dal.ca
My molecule of interest is tropospheric ozone, a major greenhouse gas and an important oxidant for the atmosphere. I investigate the production of ozone by nitrogen oxides, and how it is then transported around the globe. This is done by using a combination of modeling techniques and both remote sensing and direct measurements of ozone, NO2, and HNO3.

Betty Croft
Research Associate
(co-supervised with Jeff Pierce)
croft@mathstat.dal.ca
My research investigates the effects of clouds and precipitation on aerosols, specifically wet scavenging (the process by which aerosol particles adhere to water droplets) and cloud processing. This work contributes towards improved representations of these processes in global air quality and climate models.


Patrick Duplessis
Master of Science Student
(co-supervised with Rachel Chang)
P.Duplessis@Dal.Ca
My project aims to investigate the microphysical properties of marine fog droplets and to try to understand why some aerosols activate into condensation nuclei and some others don’t. With the support of MEOPAR and TOSST, a field campaign on the coast of Nova Scotia will be deployed in late spring, consisting of in-situ measurements and samplings.


Melanie Hammer
Doctoral Student
Melanie.Hammer@dal.ca
My research applies satellite observations of the absorbing aerosol index to understand aerosol absorption properties

Colin Lee
Doctoral Student
colin.lee@dal.ca
Currently, I’m using the GEOS-Chem Adjoint to examine how local pollutant emissions affect global mortality from exposure to fine particulate matter.


Chi Li
Doctoral Student
Personal Website
Member of GEOS-Chem Support Team
lynchlee90@gmail.com
I am investigating global long-term changes in PM2.5 mass and composition using surface visibility observations, satellite-based estimates and GEOS-Chem simulation.

Jun Meng
Doctoral Student
Jun.Meng@dal.ca

Graydon Snider
Research Associate
Personal Website
graydon.snider@dal.ca
I am working with the Surface PARTiculate mAtter Network (SPARTAN). The goal is to collect and measure aerosols hazardous to human health. Particulates smaller than 2.5 microns in diameter are correlated to respiratory and cardiac difficulties. This network will be expanded to places of high population and low monitoring density.

Emily Stone
Co-op student
em536239@dal.ca
I analyze filters collected as part of the SPARTAN project to understand fine particulate matter concentration and composition around the world.

Aaron van Donkelaar
Research Associate
Personal Website
kelaar@dal.ca
My research combines satellite retrievals with chemical transport model simulations to estimate fine aerosol concentrations around the world. This work is being used to provide valuable insight into exposure-related health effects in regions where these concentrations are not monitored directly, which include some of the most heavily populated and polluted places on earth.

Crystal Weagle
Doctoral Student
cr330325@dal.ca
I am helping to develop the Surface PARTiculate matter Network (SPARTAN). This network will create a global network of ground-level PM2.5 monitors in highly populated areas. Currently, I am investigating the statistical relationships between daily PM2.5 measurements and hourly particle light scattering measurements. I am also looking at different sampling methodologies used by various networks that presently measure PM2.5 concentrations.

Junwei Xu
Doctoral Student
Personal Website
Junwei.Xu@dal.ca
Currently, I’m using GOCI satellite retrievals and GEOS-Chem simulations with most recent Asian emissions to estimate ground-level PM2.5 concentrations in Asian countries. Ground station data is also used to validate the method. This work is expected to help monitor particulate matter in Asian countries where ground stations are relatively sparse yet air pollution is serious.

Balagopal Pillai
Systems Administrator
pillai@mathstat.dal.ca

Previous Members

Jessica Morena
Master of Science Student, 2014-2016
Currently Multidisciplinary Hydrographer, Department of Fisheries and Oceans Canada.

Jeff Geddes
Postdoctoral Fellow, 2013-2016
Currently Assistant Professor at Boston University

Sajeev Philip
PhD Student & Postdoctoral Fellow, 2009-2016
Currently Postdoctoral Fellow at NASA AMES

Nat Egan-Pimblett
Master of Science Student, 2012-2014

Andrew Morrow
Master of Science Student, 2012-2014

Megan Willis
Visiting student from University of Toronto, 2014

Sacha Ruzzante
Summer student, 2014

Shailesh Kharol
Postdoctoral Fellow
Currently Visiting Scientist at Environment Canada

Meng Li
Visiting Doctoral Student from Tsinghua University, 2014

Daniel Cunningham
Coop student, 2014

Matthew Zwicker
Coop student, 2013

Akhila Padmanabhan
Master of Science Student, 2009-2013
Currently Junior Scientist/Engineer at RWDI-AIR
Akhila.Wolfe@rwdi.com

Sara Torbatian
Master of Science Student, 2010-2013

Geert Vinken
Visiting Researcher from the University of Eindhoven, 2013

Kacie Conrad
Summer Undergraduate Student, 2013

Caroline Nowlan
Research Associate, 2012-2013
Currently Physicist at Harvard-Smithsonian Center for Astrophysics

Guannan Geng
Visiting Student, 2012 – 2013
Currently Postdoctoral Fellow at Emory University

Wai-Ho Lo
Research Associate, 2012

Ryan MacDonell
Summer Undergraduate Student, 2012

Nicolas Bousserez
Postdoctoral Fellow, 2008-2011
Currently Research Associate, University of Colorado at Boulder

Rosalind Dickinson
NSERC Summer Undergraduate Student, 2011

Andrew Neima
NSERC Summer Undergraduate Student, 2011

Felix Carrasco Galleguillos
Visiting Student, Jan-July 2010
Currently at University of Buenos Aires

Gray O’Bryne
Master’s Student, 2006-2009
Jr. Geodetic Engineer at Natural Resources Canada

Rong-Ming Hu
Research Associate, 2005-2006
Currently Research Fellow at Centre for Atmospheric and Instrumentation Research (CAIR), England

Lok Lamsal
Postdoctoral Fellow, 2006-2011
Currently Research Scientist at NASA Goddard Space Flight Center

Chulkyu Lee
Postdoctoral Fellow, 2007-2009
Currently Scientist at NIMR, Korea

Caroline Verduzco
NSERC Summer Undergraduate Student, 2009

Neil Moore
Master’s Student, 2004-2007
Currently Research Analyst, City of Summerside

Bastien Sauvage
Postdoctoral Fellow, 2005-2007
Currently Maître de conférences (professor) at Universite Toulouse, France

Thomas Walker
Master’s Student, 2005-2007
Currently Postdoctoral Fellow, NASA JPL

Siwen Wang
Visiting Student, Jan – May 2011
Currently PhD student at Tsinghua University

Aldona Wiacek
Research Associate 2008-2011
Assistant Professor of Engineering, Saint Mary’s University, Halifax

Bryan Van Wilgenburg
Undergraduate Honours Student, 2004