| Registro completo |
| Provedor de dados: |
ArchiMer
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| País: |
France
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| Título: |
Temporal variability of the anthropogenic CO2 storage in the Irminger Sea
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| Autores: |
Perez, F. F.
Vazquez-rodriguez, M.
Louarn, E.
Padin, X. A.
Mercier, Herle
Rios, A. F.
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| Data: |
2008-12
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| Ano: |
2008
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| Resumo: |
The anthropogenic CO2 (C-ant) estimates from cruises spanning more than two decades (1981-2006) in the Irminger Sea area of the North Atlantic Subpolar Gyre reveal a large variability in the C-ant storage rates. During the early 1990's, the C-ant storage rates (2.3 +/- 0.6 mol C m(-2) yr(-1)) doubled the average rate for 1981-2006 (1.1 +/- 0.1 mol C m(-2) yr(-1)), whilst a remarkable drop to almost half that average followed from 1997 onwards. The C-ant storage evolution runs parallel to chlorofluorocarbon-12 inventories and is in good agreement with C-ant uptake rates of increase calculated from sea surface pCO(2) measurements. The contribution of the Labrador Seawater to the total inventory of C-ant in the Irminger basin dropped from 66% in the early 1990s to 49% in the early 2000s. The North Atlantic Oscillation shift from a positive to a negative phase in 1996 led to a reduction of air-sea heat loss in the Labrador Sea. The consequent convection weakening accompanied by an increase in stratification has lowered the efficiency of the northern North Atlantic CO2 sink.
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| Tipo: |
Text
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| Idioma: |
Inglês
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| Identificador: |
http://archimer.ifremer.fr/doc/2008/publication-5925.pdf
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| Editor: |
Copernicus publications
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| Relação: |
http://archimer.ifremer.fr/doc/00000/5925/
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| Formato: |
application/pdf
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| Fonte: |
Biogeosciences (1726-4170) (Copernicus publications), 2008-12 , Vol. 5 , N. 6 , P. 1669-1679
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| Direitos: |
Copernicus publications
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