Distribution of CO2 parameters in the Western Tropical Atlantic Ocean

Bonou Frederic Kpedonou; Noriega Carlos; Lefevre Nathalie; Araujo Moacyr

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Distribution of CO2 parameters in the Western Tropical Atlantic Ocean

机译：西部热带大西洋CO2参数的分布

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The variability of sea surface Total Alkalinity (TA) and sea surface Total Inorganic Carbon (C-T) is examined using all available data in the western tropical Atlantic (WTA: 20 degrees S -20 degrees N, 60 degrees W -20 degrees W). Lowest TA and C-T are observed for the region located between 0 degrees N-15 degrees N/60 degrees W-50 degrees W and are explained by the influence of the Amazon plume during boreal summer. In the southern part of the area, 20 degrees S-10 degrees S/40 degrees W-60 degrees W, the highest values of TA and C-T are linked to the CO2-rich waters due to the equatorial upwelling, which are transported by the South Equatorial Current (SEC) flowing from the African coast to the Brazilian shore. An increase of C-T of 0.9 +/- 1 0.3 mu mol kg(-1) yr(-1) has been observed in the SEC region and is consistent with previous published estimates. A revised C-T-Sea Surface Salinity (SSS) relationship is proposed for the WTA to take into account the variability of C-T at low salinities. This new C-T-SSS relationship together with a published TA-SSS relationship allow to calculate pCO(2) values that compare well with observed pCO(2) (R-2 = 0.90). (C) 2015 Elsevier B.V. All rights reserved.

机译：使用热带西海岸的所有可用数据（WTA：北纬20度到-20度，北纬60度到-20度）检查了海面总碱度（TA）和海面总无机碳（C-T）的变异性。在位于北纬0度到北纬15度/西经60度到50度之间的区域观察到最低的TA和C-T，这可以通过在夏季北方地区亚马逊羽流的影响来解释。在该地区的南部，南纬20度到南纬10度/西经40度到西纬60度，由于赤道上升流，TA和CT的最高值与富含CO2的水有关，并由赤道上涌。南赤道海流（SEC）从非洲海岸流向巴西海岸。在SEC地区观察到C-T的增加为0.9 +/- 1 0.3μmol kg（-1）yr（-1），与先前发表的估计一致。为WTA提出了修订的C-T-海表盐度（SSS）关系，以考虑低盐度下C-T的变异性。这种新的C-T-SSS关系以及已发布的TA-SSS关系允许计算与观察到的pCO（2）很好比较的pCO（2）值（R-2 = 0.90）。（C）2015 Elsevier B.V.保留所有权利。

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来源
《Dynamics of Atmospheres and Oceans》 |2016年第3期|47-60|共14页
作者
Bonou Frederic Kpedonou; Noriega Carlos; Lefevre Nathalie; Araujo Moacyr;
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作者单位

Univ Fed Pernambuco UFPE, Dept Oceanog, Lab Oceanog Fis Estuarina & Costeira, Ave Arquitetura S-N, BR-50740550 Recife, PE, Brazil|Univ Fed Pernambuco UFPE, Ctr Estudos & Ensaios Risco & Modelagem Ambiental, Ave Arquitetura S-N, BR-50740550 Recife, PE, Brazil|UAC, Int Chair Math Phys & Applicat ICMPA Unesco Chair, Cotonou, Benin;

Univ Fed Pernambuco UFPE, Dept Oceanog, Lab Oceanog Fis Estuarina & Costeira, Ave Arquitetura S-N, BR-50740550 Recife, PE, Brazil|Univ Fed Pernambuco UFPE, Ctr Estudos & Ensaios Risco & Modelagem Ambiental, Ave Arquitetura S-N, BR-50740550 Recife, PE, Brazil;

Univ Fed Pernambuco UFPE, Dept Oceanog, Lab Oceanog Fis Estuarina & Costeira, Ave Arquitetura S-N, BR-50740550 Recife, PE, Brazil|Univ Fed Pernambuco UFPE, Ctr Estudos & Ensaios Risco & Modelagem Ambiental, Ave Arquitetura S-N, BR-50740550 Recife, PE, Brazil|Univ Paris 06, 4 Pl Jussieu, F-75252 Paris 05, France;

Univ Fed Pernambuco UFPE, Dept Oceanog, Lab Oceanog Fis Estuarina & Costeira, Ave Arquitetura S-N, BR-50740550 Recife, PE, Brazil|Univ Fed Pernambuco UFPE, Ctr Estudos & Ensaios Risco & Modelagem Ambiental, Ave Arquitetura S-N, BR-50740550 Recife, PE, Brazil;

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正文语种 eng
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Carbon cycle; Total Alkalinity; Total Inorganic Carbon; western tropical Atlantic; Chemical oceanography;

机译：碳循环;总碱度;总无机碳;西部热带大西洋;化学海洋学;

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Distribution of CO2 parameters in the Western Tropical Atlantic Ocean

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