Biological and Environmental Research - Earth and Environmental System Sciences
Earth and Environmental System Modeling

Hidden Production: On the Importance of Pelagic Phytoplankton Blooms Beneath Arctic Sea Ice

TitleHidden Production: On the Importance of Pelagic Phytoplankton Blooms Beneath Arctic Sea Ice
Publication TypeJournal Article
Year of Publication2020
JournalJournal of Geophysical Research: Oceans
Volume125
Number9
Abstract / Summary

Recent observations suggest that substantial phytoplankton blooms occur under sea ice on Arctic continental shelves during June and July. This is opposed to the traditional view that no significant biomass is produced in sea-ice covered waters. However, no observational estimates are available on the Arctic-wide primary production beneath sea ice. Here, using a fully-coupled Arctic system model, we estimate that 63% / 41% of the total primary production in the central Arctic occurs in waters covered by sea ice that is >=50% / >=85% concentration. The total primary production there is increasing at a rate of 5.2% per decade during 1980-2018. Increased light transmission, due to the removal of sea ice, more extensive melt ponds, and thinner sea ice, is implicated as the main cause of increasing trends in primary production.

URLhttp://dx.doi.org/10.1029/2020jc016211
DOI10.1029/2020jc016211
Journal: Journal of Geophysical Research: Oceans
Year of Publication: 2020
Volume: 125
Number: 9
Publication Date: 09/2020

Recent observations suggest that substantial phytoplankton blooms occur under sea ice on Arctic continental shelves during June and July. This is opposed to the traditional view that no significant biomass is produced in sea-ice covered waters. However, no observational estimates are available on the Arctic-wide primary production beneath sea ice. Here, using a fully-coupled Arctic system model, we estimate that 63% / 41% of the total primary production in the central Arctic occurs in waters covered by sea ice that is >=50% / >=85% concentration. The total primary production there is increasing at a rate of 5.2% per decade during 1980-2018. Increased light transmission, due to the removal of sea ice, more extensive melt ponds, and thinner sea ice, is implicated as the main cause of increasing trends in primary production.

DOI: 10.1029/2020jc016211
Citation:
Clement Kinney, J, W Maslowski, R Osinski, M Jin, M Frants, N Jeffery, and Y Lee.  2020.  "Hidden Production: On the Importance of Pelagic Phytoplankton Blooms Beneath Arctic Sea Ice."  Journal of Geophysical Research: Oceans 125(9).  https://doi.org/10.1029/2020jc016211.