Processes Controlling the Carbonate Chemistry of Surface Seawater Along the 150°E Transect in the Northwest Pacific Ocean

Mou, Liang; Zhang, Honghai; Chen, Zhaohui; Hu, Yunbin

doi:10.1007/s11802-022-5207-8

Cited by 2 publications

(1 citation statement)

References 28 publications

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“…DO saturation (DO% = [O 2 ] obs / [O 2 ] eq × 100%, where [O 2 ] obs is in-situ DO concentration, and [O 2 ] eq is the concentration at equilibrium with the atmosphere) and apparent oxygen utilization (AOU = [O 2 ] eq -[O 2 ] obs ) were also calculated (Benson and Krause, 1984). Discrete dissolved inorganic carbon (DIC), pCO 2 , and Revelle factor (RF) were calculated from the measured pH T, 25 and TA data, using CO2SYS v2.1 program (Pierrot et al, 2006), together with the in-situ temperature and salinity, and with the equilibrium constants of the carbonate acid K 1 and K 2 from Mehrbach et al (1973) refit by Dickson and Millero (2007), the K HSO4 was from (Dickson, 1990), and the [B] T value from Uppström (1974), where pH T, 25 and TA data were obtained from Mou et al (2022).…”

Section: Discrete Sampling and Analysismentioning

confidence: 99%

High-resolution distribution and emission of dimethyl sulfide and its relationship with pCO2 in the Northwest Pacific Ocean

Yan

Feng

et al. 2023

Front. Mar. Sci.

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Ocean-derived dimethyl sulfide (DMS) is widely concerning because of its hypothesized influence on global climate change. This study aims to explore the distribution characteristics and influencing factors of DMS and partial pressure of carbon dioxide (pCO2) in the Northwest Pacific Ocean, as well as the potential relationship between DMS and pCO2. A high-resolution, underway, shipboard measurement device was used to determine the DMS and pCO2 of the surface seawater and atmosphere in the Northwest Pacific and its marginal seas during November 2019. The result show that atmospheric and surface seawater DMS concentrations ranged from 3 to 125 pptv and 0.63 to 2.28 nmol L-1, respectively, with mean values of 46 ± 19 pptv and 1.08 ± 0.34 nmol L-1. The average sea surface pCO2 was 371 ± 16 μatm (range from 332 to 401 μatm). The trends in the surface seawater DMS in different current systems were primarily associated with phytoplankton abundance and composition. Biological activity and physical processes such as cooling jointly influenced the sea surface pCO2. A cold eddy along the transect in the Northwest Pacific Ocean increased DMS at the sea surface by 10% and CO2 uptake by 3%. We found a significant negative correlation between DMS and pCO2 in the Northwest Pacific Ocean at the 0.1° resolution [DMS]seawater = -0.0161[pCO2]seawater + 7.046 (R2 = 0.569, P < 0.01). The DMS and pCO2 sea-air fluxes were estimated to range from 0.04 to 25.3 μmol m-2·d-1 and from -27.0 to 4.22 mmol m-2·d-1 throughout the survey area. The Northwest Pacific Ocean, especially the Oyashio Current, is an important sink of CO2 and a source of DMS.

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Section: Discrete Sampling and Analysismentioning

confidence: 99%

High-resolution distribution and emission of dimethyl sulfide and its relationship with pCO2 in the Northwest Pacific Ocean

Yan

Feng

et al. 2023

Front. Mar. Sci.

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Processes controlling seawater acidification in offshore aquaculture system of China

Zhang,

2024

Regional Studies in Marine Science

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Processes Controlling the Carbonate Chemistry of Surface Seawater Along the 150°E Transect in the Northwest Pacific Ocean

Cited by 2 publications

References 28 publications

High-resolution distribution and emission of dimethyl sulfide and its relationship with pCO2 in the Northwest Pacific Ocean

High-resolution distribution and emission of dimethyl sulfide and its relationship with pCO2 in the Northwest Pacific Ocean

Processes controlling seawater acidification in offshore aquaculture system of China

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