Dr. Tim Papakyriakou

GEOG 4560/7470 – Techniques in Climatology
GEOG 4310/7450 – Topics in Boundary Layer Climatology
GEOG 3320 – Microclimates and Micrometeorology
GEOG 2310 – Introduction to Process Hydrology
 

My research examines cycles of carbon, heat and water in high latitude aquatic and marine environments. The motivation is to better understand greenhouse gas emission budgets, and factors that moderate the gas budgets in these systems.  The geographic focus of research extends from local inland waters, like Lake Winnipeg, to Arctic coastal seas, and consequently a major theme of my research examines how carbon is cycled within and between nodes that connect in-land waters to the coastal ocean, and effects of river water and associated delivery of carbon and nutrients on the carbon cycling within the downstream marine environment. The research is multidisciplinary, with a strong field component. I use micrometeorological techniques, like eddy covariance, to characterize the exchange of gases (e.g., CO2, CH4, H2O) and heat between the aquatic/marine ecosystem and overlying air, and I make use of shore-based stations, boats and ships for measurements and water sampling.

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Mandryk, R., D. Capelle, C. Manning, P. Tortell, R. McCulloch, and T. Papakyriakou (2021), First estimation of the diffusive methane flux and concentrations from Lake Winnipeg, a large, shallow and eutrophic Lake, J. Great Lakes Res., Accepted for publication, March 16, 2021.

Yezhova, Y, D. Capelle, M. Stainton, and T. Papakyriakou, (2021) Carbon fixation by the phytoplankton community across Lake Winnipeg, J. Great Lakes Res, Accepted for publication, March 6, 2021.

Burgers, T., J.-É. Tremblay, B.G.T. Else, and T. Papakyriakou, (2020) Estimates of net community production from multiple approaches surrounding the spring ice-edge bloom in Baffin Bay, Elementa: Science of the Anthropocene, 8 (1), 013.

Ahmed, M. M. M., B. G. T. Else, D. Capelle, L.A. Miller, and T. Papakyriakou, (2020) Underestimation of surface pCO2 and air-sea CO2 fluxes due to freshwater stratification in an Arctic shelf sea, Hudson Bay, Elementa: Science of the Anthropocene, 8 (1), 084.

Capelle, D. Kuzyk, Z. Z., Papakyriakou, T., Gueguen, C., Miller, L., and R. Macdonald, (2020)  Effect of terrestrial organic matter on ocean acidification and CO2 flux in an Arctic shelf sea, Prog. Phys. Oceanogr., 185, Art. No. 102319.

Ahmed, M., B.G. T.Else, T. Burgers and T. Papakyriakou (2019) Variability of surface water pCO2 in the Canadian Arctic Archipelago from 2010 to 201, Journal of Geophysical Research (Oceans), 124(3), 1876-1896.

Miller, L.A., T. Burgers, W.J. Burt, M.A. Granskog and T. Papakyriakou, (2019) Air-sea CO2 flux estimates in stratified Arctic coastal waters: How wrong can we be?  Geophys. Res. Lett., GRL58403, 46(1), 235-243.