Anthropogenic carbon distribution in the eastern South Pacific Ocean

Abstract. We present results of the CO2/carbonate system from the BIOSOPE cruise in the Eastern South Pacific Ocean, in an area not sampled previously. In particular, we present estimates of the anthropogenic carbon (C>TrOCAant) distribution in the upper 1000 m of this region using the TrOCA method. The highest concentrations of CTrOCAant found around 13° S, 132° W and 32° S, 91° W, are higher than 80 μmol.kg−1 and 70 μmol.kg−1, respectively. The lowest concentrations are observed below 800 m depth (≤2 μmol.kg−1) and within the Oxygen Minimum Zone (OMZ), mainly around 140° W (<11 μmol.kg−1). As a result of the anthropogenic carbon penetration there has been decrease in pH by over 0.1 on an average in the upper 200 m. This work further improves our understanding on the penetration of anthropogenic carbon in the Eastern Pacific Ocean.

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Anthropogenic carbon in the eastern South Pacific Ocean

Biogeosciences Discussions ◽

10.5194/bgd-4-1815-2007 ◽

2007 ◽

Vol 4 (3) ◽

pp. 1815-1837 ◽

Cited By ~ 5

Author(s):

L. Azouzi ◽

R. Gonçalves Ito ◽

F. Touratier ◽

C. Goyet

Keyword(s):

Pacific Ocean ◽

General Trend ◽

South Pacific ◽

Hydrodynamic Characteristics ◽

Eastern Pacific Ocean ◽

Previous Knowledge ◽

Oxygen Minimum Zones ◽

South Pacific Ocean ◽

Anthropogenic Carbon ◽

Oxygen Minimum

Abstract. We present results from the BIOSOPE cruise in the eastern South Pacific Ocean. In particular, we present estimates of the anthropogenic carbon CantTrOCA distribution in this area using the TrOCA method recently developed by Touratier and Goyet (2004a, b) and Touratier et al. (2007). We study the distribution of this anthropogenic carbon taking into account of the hydrodynamic characteristics of this region. We then compare these results with earlier estimates in nearby areas of the anthropogenic carbon as well as other anthropogenic tracer (CFC-11). The highest concentrations of CantTrOCA are located around 13° S 132° W and 32° S 91° W, and their concentrations are larger than 80 μmol kg−1 and 70 μmol kg−1, respectively. The lowest concentrations were observed below 800 m depths (≤2 μ mol kg−1) and at the Oxygen Minimum Zones (OMZ), mainly around 140° W (<11 μmol kg−1). The comparison with earlier work in nearby areas provides a general trend and indicates that the results presented here are in general agreement with previous knowledge. This work further improves our understanding on the penetration of anthropogenic carbon in the eastern Pacific Ocean.

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Vertical and horizontal extension of the oxygen minimum zone in the eastern South Pacific Ocean

Deep Sea Research Part II Topical Studies in Oceanography ◽

10.1016/j.dsr2.2008.11.001 ◽

2009 ◽

Vol 56 (16) ◽

pp. 992-1003 ◽

Cited By ~ 138

Author(s):

Rosalino Fuenzalida ◽

Wolfgang Schneider ◽

José Garcés-Vargas ◽

Luis Bravo ◽

Carina Lange

Keyword(s):

Pacific Ocean ◽

South Pacific ◽

Oxygen Minimum Zone ◽

South Pacific Ocean ◽

Minimum Zone ◽

Oxygen Minimum

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Corrigendum to "Anthropogenic carbon distribution in the eastern South Pacific Ocean" published in Biogeosciences, 6, 149–156, 2009

Biogeosciences ◽

10.5194/bg-6-361-2009 ◽

2009 ◽

Vol 6 (3) ◽

pp. 361-361 ◽

Cited By ~ 2

Author(s):

L. Azouzi ◽

C. Goyet ◽

R. Gonçalves Ito ◽

F. Touratier

Keyword(s):

Pacific Ocean ◽

South Pacific ◽

Carbon Distribution ◽

South Pacific Ocean ◽

Anthropogenic Carbon

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Distribution and Phylogenetic Characteristics of the Genes Encoding Enzymes Relevant to Methane Oxidation in Oxygen Minimum Zones of the Eastern Pacific Ocean

Research Journal of Environmental Sciences ◽

10.3923/rjes.2007.275.284 ◽

2007 ◽

Vol 1 (6) ◽

pp. 275-284 ◽

Cited By ~ 17

Author(s):

Toru Hayashi . ◽

Hajime Obata . ◽

Toshitaka Gamo . ◽

Yuji Sano . ◽

Takeshi Naganuma .

Keyword(s):

Pacific Ocean ◽

Methane Oxidation ◽

Eastern Pacific ◽

Eastern Pacific Ocean ◽

Oxygen Minimum Zones ◽

Genes Encoding ◽

Oxygen Minimum

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The Subsurface Water Masses in the Western South Pacific Ocean

Marine and Freshwater Research ◽

10.1071/mf9620018 ◽

1962 ◽

Vol 13 (1) ◽

pp. 18 ◽

Cited By ~ 71

Author(s):

K Wyrtki

Keyword(s):

Pacific Ocean ◽

Extreme Values ◽

Core Layer ◽

South Pacific ◽

Water Masses ◽

Water Salinity ◽

Subsurface Water ◽

Intermediate Water ◽

South Pacific Ocean ◽

Oxygen Minimum

An analysis is made of subsurface water masses in the subtropical western South Pacific Ocean, using temperature-salinity and temperature-oxygen relations. Seven major water masses, characterized by extreme values of salinity and oxygen, are distinguished. These are the Subtropical Lower Water (salinity maximum), the upper oxygen minimum, the Subantarctic Intermediate Water (oxygen maximum), the Antarctic Intermediate Water (salinity minimum and oxygen maximum), the deep oxygen minimum, the Deep Water (salinity maximum), and the Bottom Water. The core layer method is used to describe the distribution of the different water masses and to draw conclusions on their spreading.

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