Articles | Volume 19, issue 3
Research article
15 Jun 2023
Research article |  | 15 Jun 2023

High interannual surface pCO2 variability in the southern Canadian Arctic Archipelago's Kitikmeot Sea

Richard P. Sims, Mohamed M. M. Ahmed, Brian J. Butterworth, Patrick J. Duke, Stephen F. Gonski, Samantha F. Jones, Kristina A. Brown, Christopher J. Mundy, William J. Williams, and Brent G. T. Else

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Cited articles

Ahmed, M. and Else, B. G.: The Ocean CO2 Sink in the Canadian Arctic Archipelago: A Present-Day Budget and Past Trends Due to Climate Change, Geophys. Res. Lett., 46, 9777–9785,, 2019. 
Ahmed, M., Else, B., Burgers, T., and Papakyriakou, T.: Variability of surface water pCO2 in the Canadian Arctic Archipelago from 2010 to 2016, J. Geophys. Res.-Ocean., 124, 1876–1896,, 2019. 
Ahmed, M. M., Else, B. G., Capelle, D., Miller, L. A., and Papakyriakou, T.: Underestimation of surface pCO2 and air-sea CO2 fluxes due to freshwater stratification in an Arctic shelf sea, Hudson Bay, Elementa, 8, 084,, 2020. 
Ahmed, M. M., Else, B. G., Butterworth, B., Capelle, D. W., Guéguen, C., Miller, L. A., Meilleur, C., and Papakyriakou, T.: Widespread surface water pCO2 undersaturation during ice-melt season in an Arctic continental shelf sea (Hudson Bay, Canada), Elementa, 9, 00130,, 2021. 
Arrigo, K. R., Perovich, D. K., Pickart, R. S., Brown, Z. W., Van Dijken, G. L., Lowry, K. E., Mills, M. M., Palmer, M. A., Balch, W. M., and Bahr, F.: Massive phytoplankton blooms under Arctic sea ice, Science, 336, 1408,, 2012. 
Short summary
Using a small research vessel based out of Cambridge Bay in the Kitikmeot Sea (Canadian Arctic Archipelago), we were able to make measurements of surface ocean pCO2 shortly after sea ice breakup for 4 consecutive years. We compare our measurements to previous underway measurements and the two ongoing ocean carbon observatories in the region. We identify high interannual variability and a potential bias in previous estimates due to lower pCO2 in bays and inlets.