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Get Free AccessCarbon system parameters measured during several expeditions along the coast of Chile (23°S-56°S) have been used to show the main spatial and temporal trends of air-sea CO 2 fluxes in the coastal waters of the eastern South Pacific.Chilean coastal waters are characterized by strong pCO 2 gradients between the atmosphere and the surface water, with high spatial and temporal variability.On average, the direction of the carbon flux changes from CO 2 outgassing at the coastal upwelling region to CO 2 sequestering at the nonupwelling fjord region in Chilean Patagonia.Estimations of surface water pCO 2 along the Patagonian fjord region showed that, while minimum pCO 2 levels (strong CO 2 undersaturation) occurs during the spring and summer period, maximum levels (including CO 2 supersaturation) occur during the austral winter.CO 2 uptake in the Patagonia fjord region during spring-summer is within the order of -5 mol C m -2 yr -1 , indicating a significant regional sink of atmospheric CO 2 during that season.We suggest that the CO 2 sink at Patagonia most probably exceeds the CO 2 source exerted by the coastal upwelling system off central northern Chile.
Rodrigo Torres, Silvio Pantoja, Naomi Harada, Humberto E. González, Giovanni Daneri, Máximo Frangópulos, José A. Rutllant, Carlos M. Duarte, Sergio Ruíz‐Halpern, Eva Mayol, Masao Fukasawa (2011). Air-sea CO<sub>2</sub>fluxes along the coast of Chile: From CO<sub>2</sub>outgassing in central northern upwelling waters to CO<sub>2</sub>uptake in southern Patagonian fjords. , 116(C9), DOI: https://doi.org/10.1029/2010jc006344.
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Type
Article
Year
2011
Authors
11
Datasets
0
Total Files
0
Language
en
DOI
https://doi.org/10.1029/2010jc006344
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