Increased CO2 uptake due to sea ice growth and decay in the Nordic Seas

S. Rysgaard; J. Bendtsen; L. T. Pedersen; H. Ramløv; Ronnie Nøhr Glud

doi:10.1029/2008JC005088

Increased CO2 uptake due to sea ice growth and decay in the Nordic Seas

S. Rysgaard, J. Bendtsen, L. T. Pedersen, H. Ramløv, Ronnie Nøhr Glud

62 Citationer (Scopus)

Abstract

The uptake rates of atmospheric CO2 in the Nordic Seas are among the highest in the world's oceans. This has been ascribed mainly to a strong biological drawdown, but chemical processes within the sea ice itself have also been suggested to play a role. The importance of sea ice for the carbon uptake in the Nordic Seas is currently unknown. We present evidence from 50 localities in the Arctic Ocean that dissolved inorganic carbon is rejected together with brine from growing sea ice and that sea ice melting during summer is rich in carbonates. Model calculations show that melting of sea ice exported from the Arctic Ocean into the East Greenland current and the Nordic Seas plays an important and overlooked role in regulating the surface water partial pressure of CO2 and increases the seasonal CO2 uptake in the area by approximately 50%.

Originalsprog	Engelsk
Tidsskrift	Journal of Geophysical Research - Oceans
Vol/bind	114
Udgave nummer	C09011
Sider (fra-til)	1-9
Antal sider	9
ISSN	2169-9003
DOI	https://doi.org/10.1029/2008JC005088
Status	Udgivet - 2009

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10.1029/2008JC005088

Citationsformater

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title = "Increased CO2 uptake due to sea ice growth and decay in the Nordic Seas",

abstract = "The uptake rates of atmospheric CO2 in the Nordic Seas are among the highest in the world's oceans. This has been ascribed mainly to a strong biological drawdown, but chemical processes within the sea ice itself have also been suggested to play a role. The importance of sea ice for the carbon uptake in the Nordic Seas is currently unknown. We present evidence from 50 localities in the Arctic Ocean that dissolved inorganic carbon is rejected together with brine from growing sea ice and that sea ice melting during summer is rich in carbonates. Model calculations show that melting of sea ice exported from the Arctic Ocean into the East Greenland current and the Nordic Seas plays an important and overlooked role in regulating the surface water partial pressure of CO2 and increases the seasonal CO2 uptake in the area by approximately 50%.",

author = "S. Rysgaard and J. Bendtsen and Pedersen, {L. T.} and H. Raml{\o}v and Glud, {Ronnie N{\o}hr}",

note = "KeyWords Plus: GREENLAND SEA; BARENTS SEA; OCEAN; TEMPERATURE; SEDIMENT; CIRCULATION; TRANSPORT; EXCHANGE; FLUXES; PCO(2)",

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T1 - Increased CO2 uptake due to sea ice growth and decay in the Nordic Seas

AU - Rysgaard, S.

AU - Bendtsen, J.

AU - Pedersen, L. T.

AU - Ramløv, H.

AU - Glud, Ronnie Nøhr

N1 - KeyWords Plus: GREENLAND SEA; BARENTS SEA; OCEAN; TEMPERATURE; SEDIMENT; CIRCULATION; TRANSPORT; EXCHANGE; FLUXES; PCO(2)

PY - 2009

Y1 - 2009

N2 - The uptake rates of atmospheric CO2 in the Nordic Seas are among the highest in the world's oceans. This has been ascribed mainly to a strong biological drawdown, but chemical processes within the sea ice itself have also been suggested to play a role. The importance of sea ice for the carbon uptake in the Nordic Seas is currently unknown. We present evidence from 50 localities in the Arctic Ocean that dissolved inorganic carbon is rejected together with brine from growing sea ice and that sea ice melting during summer is rich in carbonates. Model calculations show that melting of sea ice exported from the Arctic Ocean into the East Greenland current and the Nordic Seas plays an important and overlooked role in regulating the surface water partial pressure of CO2 and increases the seasonal CO2 uptake in the area by approximately 50%.

AB - The uptake rates of atmospheric CO2 in the Nordic Seas are among the highest in the world's oceans. This has been ascribed mainly to a strong biological drawdown, but chemical processes within the sea ice itself have also been suggested to play a role. The importance of sea ice for the carbon uptake in the Nordic Seas is currently unknown. We present evidence from 50 localities in the Arctic Ocean that dissolved inorganic carbon is rejected together with brine from growing sea ice and that sea ice melting during summer is rich in carbonates. Model calculations show that melting of sea ice exported from the Arctic Ocean into the East Greenland current and the Nordic Seas plays an important and overlooked role in regulating the surface water partial pressure of CO2 and increases the seasonal CO2 uptake in the area by approximately 50%.

U2 - 10.1029/2008JC005088

DO - 10.1029/2008JC005088

M3 - Journal article

SN - 0148-0227

VL - 114

SP - 1

EP - 9

JO - Journal of Geophysical Research

JF - Journal of Geophysical Research

IS - C09011

ER -

Increased CO2 uptake due to sea ice growth and decay in the Nordic Seas

Abstract

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