Sangeeta Sharma

Image Sangeeta Sharma
Physical Scientist - Study Leader - Aerosol chemical and optical properties specialist including black carbon.

Leading Canadian Aerosol Baseline Measurement (CABM) program that monitors changes in emissions and transport on the optical and chemical properties of the aerosol at various Canadian locations including the high Arctic, Alert.

Current research and/or projects

Coordinating and Managing Canadian Aerosol Baseline Measurement program and related research activities

  • Changes in physical and chemical properties of aerosols at five Canadian sites to examine the impact of changes in emissions and climate in the Northern Hemisphere
  • Changes in atmospheric aerosol composition in the Arctic, and related ice-core snow pack studies in conjunction to the atmospheric concentrations of sulphate, nitrate, black carbon and methane sulphonate
  • Changes in aerosols properties due to change in fire activities in the Canadian Boreal region
  • Biogenic sulphur emissions in the Arctic
  • Changes in aerosol properties due to increase in ship's emissions in the Arctic in near future.

Professional activities / interests

Steering committee member of the air Pollution in the Arctic: climate, Environment and Societies (aPACES), an international initiative.

A member of working group in the Arctic Monitoring Assessment Program (AMAP), an international initiative.

Collaborative aerosol studies and running programs with other government institutions for long term observations such as NOAA/ESRL, NOAA/PMEL, Earth Sciences Sector, Natural Resources Canada in Ottawa, Norwegian Institute for Air Research (NILU), Desert Research Institute and Maurice Lamontagne Institute, Rimouski

Collaborations with Dr. Claudio Tomasi from Institute of Atmospheric Sciences and Climate (ISAC), CNR, Bologna, Italy

Field campaign participation related to optical and chemical characterization of atmospheric aerosol "PM-2.5 thrust study" for the measurement of black carbon aerosol (1998-2000), "Role of sulphur in the Georgia Strait study", (1999-2000), Canadian Boreal region (2003), ICARTT (2004), CCTII study (2005-2007), INTEX-B (2006), and Egbert 2007 and 2009, PAMARCMIP 2011, 2012, NETCARE 2014.

Education and awards

M.Sc (Atmospheric Chemistry) York University, Best thesis award

B. Sc. (Hon.) York University

Key publications

First Author:

Sharma, Sangeeta, W. Richard Leaitch, Lin Huang, Daniel Veber, Felicia Kolonjari, Wendy Zhang, Sarah J. Hanna, Allan K. Bertram, John A. Ogren, 2017, An Evaluation of three methods for measuring black carbon at Alert, Canada, Atmos. Chem, Phys. Discuss, doi:10.5194/acp-2017-339.

S. Sharma, J.A. Ogren, A. Jefferson, K. Eleftheriadis, E. chan, P.K. Quinn, J. F. Burkhart, 2013, Black Carbon in the Arctic, [in Arctic Report Card 2013],

Sharma, S., M. Ishizawa, D. Chan, D. Lavoue, E. Andrews, K. Eleftheridis, and S. Maksyutov 2013, 16-year simulation of Arctic black carbon: transport, source contribution, and sensitivity analysis on deposition, J. Geophys. Res., 118, 1-22, doi:10.1029/2012JD01774.

Sharma, S., E. Chan, M. Ishizwa, D. Toom-Sauntry, S.L. Gong,k S.M. Li, D. W. Tarasick, W. R. Keaitch, A. Norman, P.K.Quinn, T.S. Bates, M. Levasseur, L.A. Barrie, and W. Maenhaut, 2012, Influence of transport and ocean ice extent on biogenic erosol sulfur in the Arctic atmosphere, J. Geophys. Res., 117, D12209, doi:10.1029/2011JD017074.

Sharma, S., E. Andrews, L. A. Barrie, J. A. Ogren and D. Lavoué. 2006. Variations and sources of the equivalent black carbon in the high Arctic revealed by long-term observations at Alert and Barrow: 1989-2003. J. Gephys. Res., 111:D14208, doi:10.1029/2005JD006581.

Sharma, S., D. Lavoue, H. Cachier, L. A. Barrie and S. L. Gong. 2004. Long term trends of the black carbon concentrations in the Canadian Arctic. J. Geophys. Res., 109:D15203, doi:10.1029/2003JD004331.

Sharma S., J. R. Brook, H. Cachier, J. Chow, A. Gaudenzi and G. Lu. 2002. Light absorption and thermal measurements of black carbon in different regions of Canada. J. Geophys. Res., 107(D24):4771. doi:10.1029/2002JD002496.

Sharma, S., R. Vingarzan, L. A. Barrie, A. Norman, A. Sirois, M. Henry and C. DiCenzo. 2002. Concentrations of dimethyl sulfide in the Strait of Georgia and its impact on the atmospheric sulfur budget of the Canadian West Coast. J. Geophys. Res., 108(D15):4459, doi:10.1029/2002JD002447.

Co-authorship papers:

Xu, Jun-Wei, Randall V. Martin, Andrew Morrow, Sangeeta Sharma, Lin Huang, W. Richard Leaitch, Julia Burkart, Hannes Schulz, Marco Zanatta, Megan D. Willis, Daven K. Henze, Colin J. Lee, Andreas B. Herber, and Jonathan P. D. Abbatt, 2017. Source attribution of Arctic black carbon constrained by aircraft and surface measurements, Atmos. Chem. Phys., 17, 11971-11989,

Katrina M. Macdonald, Sangeeta Sharma, Desiree Toom, Alina Chivulescu, Sarah Hanna, Allan K. Bertram, Andrew Platt, Mike Elsasser, Lin Huang, David Tarasick, Nathan Chellman, Joseph R. McConnell, Heiko Bozem, Daniel Kunkel, Ying Duan Lei, Greg J. Evans, and Jonathan P. D. Abbatt, 2017, Observations of atmospheric chemical deposition to high Arctic snow, Atmos. Chem. Phys., 17, 5775-5788, doi: 10.5194/acp-17-5775-2017.

 Arnold, S.R., K.S. Law, C.A. Brock, J.L. Thomas, S.M. Starkweather, K. von Salzen, A. Stohl, S. Sharma, M.T. Lund, M.G. Flanner, T. Petäjä, H. Tanimoto, J. Gamble, J.E. Dibb, M. Melamed, N. Johnson, M. Fidel, V.-P. Tynkkynen, A. Baklanov, S. Eckhardt, S.A. Monks, J. Browse, H. Bozem, 2017, Arctic air pollution: Challenges and opportunities for the next decade, Elementa:Science of the Anthropocene, 4:000104, doi:10.12952/journal.elementa.000104.

Aliabadi, A.A., R.M. Staebler, and S. Sharma, 2015, Air quality monitoring in communities of the Canadian Arctic during the high shipping season with a focus on local and marine pollution, Atmos. Chem. Phys., 15,2651-2673, doi:10.5194/acp-15-2651-2015.

Research facility

4905 Dufferin Street
Toronto, ON M3H 5T4


Member of air Pollution in the Arctic: Climate, Environment and Societies (aPACES)

Member of Arctic Monitoring Assessment Program (AMAP) working group aerosol

Member of POLAR- IPY Programme, Institute of Atmospheric Sciences and Climate (ISAC), CNR, Bologna, Italy

National Oceanic & Atmospheric Administration/ Earth System Research Laboratory, Boulder, Colorado, USA

Desert Research Institute (DRI), Nevada, USA

Norwegian Institute for Air Research (NILU), Norway

National Oceanic & Atmospheric Administration/ Pacific Marine Environmental Laboratory, Seattle, WA, USA.