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

Journal Article · · Journal of Geophysical Research. Oceans
DOI:https://doi.org/10.1029/2020JC016211· OSTI ID:1650697
Abstract

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.

Research Organization:
Naval Postgraduate School, Monterey, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
SC0014117
OSTI ID:
1650697
Alternate ID(s):
OSTI ID: 1830812
OSTI ID: 1664562
Journal Information:
Journal of Geophysical Research. Oceans, Journal Name: Journal of Geophysical Research. Oceans Journal Issue: 9 Vol. 125; ISSN 2169-9275
Publisher:
American Geophysical Union (AGU)Copyright Statement
Country of Publication:
United States
Language:
English

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