Monthly and seasonal variations in the surface carbonate system and air–sea CO2 flux of the Yellow Sea

Young Ho Ko; Min Woo Seok; Jin Yong Jeong; Jae Hoon Noh; Jongmin Jeong; Ahra Mo; Tae Wook Kim

doi:10.1016/j.marpolbul.2022.113822

Monthly and seasonal variations in the surface carbonate system and air–sea CO₂ flux of the Yellow Sea

Young Ho Ko, Min Woo Seok, Jin Yong Jeong, Jae Hoon Noh, Jongmin Jeong, Ahra Mo, Tae Wook Kim

Division of Environmental Science and Ecological Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

Surface carbonate chemistry in the Yellow Sea was investigated based on discrete seawater samples collected from 2017 to 2020 at the Socheongcho Ocean Research Station (S-ORS; 37.423°N, 124.738°E). Records of carbon parameters, including seawater CO₂ partial pressure (pCO₂), revealed considerable seasonal variations, with amplitudes comparable to those observed across the western part of the Yellow Sea. The study site acted as a modest sink (−0.13 mol C m⁻² yr⁻¹) for atmospheric CO₂. Biological processes (primary production and respiration) and physical conditions (temperature and degree of stratification) determined seawater pCO₂, which fluctuated on an intraseasonal timescale between oversaturated and undersaturated with respect to atmospheric pCO₂. Variation in pCO₂ was significant in summer, depending on the biological carbon drawdown and tidal mixing-induced upwelling (increased pCO₂ up to ~1000 μatm). The intraseasonal variability in seawater pCO₂ may bias estimated air–sea CO₂ fluxes, if measurements with a coarser (seasonal) time resolution are used.

Original language	English
Article number	113822
Journal	Marine Pollution Bulletin
Volume	181
DOIs	https://doi.org/10.1016/j.marpolbul.2022.113822
Publication status	Published - 2022 Aug

Keywords

Air–sea CO flux
Coastal ocean
Tidal mixing
Yellow Sea
pCO

ASJC Scopus subject areas

Oceanography
Aquatic Science
Pollution

Access to Document

10.1016/j.marpolbul.2022.113822

Cite this

@article{52b14695ca7d4e7aa8630c372c0d2912,

title = "Monthly and seasonal variations in the surface carbonate system and air–sea CO2 flux of the Yellow Sea",

abstract = "Surface carbonate chemistry in the Yellow Sea was investigated based on discrete seawater samples collected from 2017 to 2020 at the Socheongcho Ocean Research Station (S-ORS; 37.423°N, 124.738°E). Records of carbon parameters, including seawater CO2 partial pressure (pCO2), revealed considerable seasonal variations, with amplitudes comparable to those observed across the western part of the Yellow Sea. The study site acted as a modest sink (−0.13 mol C m−2 yr−1) for atmospheric CO2. Biological processes (primary production and respiration) and physical conditions (temperature and degree of stratification) determined seawater pCO2, which fluctuated on an intraseasonal timescale between oversaturated and undersaturated with respect to atmospheric pCO2. Variation in pCO2 was significant in summer, depending on the biological carbon drawdown and tidal mixing-induced upwelling (increased pCO2 up to ~1000 μatm). The intraseasonal variability in seawater pCO2 may bias estimated air–sea CO2 fluxes, if measurements with a coarser (seasonal) time resolution are used.",

keywords = "Air–sea CO flux, Coastal ocean, Tidal mixing, Yellow Sea, pCO",

author = "Ko, {Young Ho} and Seok, {Min Woo} and Jeong, {Jin Yong} and Noh, {Jae Hoon} and Jongmin Jeong and Ahra Mo and Kim, {Tae Wook}",

note = "Funding Information: The authors appreciate all research and funding support. In particular, the authors recognize the technical support for the maintenance and operation of the Korea Ocean Research Stations Program by the Korea Hydrographic Observation Agency. This work was mainly supported by a National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIT; No. 2021R1C1C2009977 ) and the “Establishment of the Ocean Research Stations in the Jurisdiction Zone and Convergence Research” project funded by the Ministry of Oceans and Fisheries , Korea. This study was also partially supported by the Basic Science Research Program of the NRF ( 2019R1A2C2089994 ) and a Korea University grant. Publisher Copyright: {\textcopyright} 2022",

year = "2022",

month = aug,

doi = "10.1016/j.marpolbul.2022.113822",

language = "English",

volume = "181",

journal = "Marine Pollution Bulletin",

issn = "0025-326X",

publisher = "Elsevier Inc.",

}

TY - JOUR

T1 - Monthly and seasonal variations in the surface carbonate system and air–sea CO2 flux of the Yellow Sea

AU - Ko, Young Ho

AU - Seok, Min Woo

AU - Jeong, Jin Yong

AU - Noh, Jae Hoon

AU - Jeong, Jongmin

AU - Mo, Ahra

AU - Kim, Tae Wook

N1 - Funding Information: The authors appreciate all research and funding support. In particular, the authors recognize the technical support for the maintenance and operation of the Korea Ocean Research Stations Program by the Korea Hydrographic Observation Agency. This work was mainly supported by a National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIT; No. 2021R1C1C2009977 ) and the “Establishment of the Ocean Research Stations in the Jurisdiction Zone and Convergence Research” project funded by the Ministry of Oceans and Fisheries , Korea. This study was also partially supported by the Basic Science Research Program of the NRF ( 2019R1A2C2089994 ) and a Korea University grant. Publisher Copyright: © 2022

PY - 2022/8

Y1 - 2022/8

N2 - Surface carbonate chemistry in the Yellow Sea was investigated based on discrete seawater samples collected from 2017 to 2020 at the Socheongcho Ocean Research Station (S-ORS; 37.423°N, 124.738°E). Records of carbon parameters, including seawater CO2 partial pressure (pCO2), revealed considerable seasonal variations, with amplitudes comparable to those observed across the western part of the Yellow Sea. The study site acted as a modest sink (−0.13 mol C m−2 yr−1) for atmospheric CO2. Biological processes (primary production and respiration) and physical conditions (temperature and degree of stratification) determined seawater pCO2, which fluctuated on an intraseasonal timescale between oversaturated and undersaturated with respect to atmospheric pCO2. Variation in pCO2 was significant in summer, depending on the biological carbon drawdown and tidal mixing-induced upwelling (increased pCO2 up to ~1000 μatm). The intraseasonal variability in seawater pCO2 may bias estimated air–sea CO2 fluxes, if measurements with a coarser (seasonal) time resolution are used.

AB - Surface carbonate chemistry in the Yellow Sea was investigated based on discrete seawater samples collected from 2017 to 2020 at the Socheongcho Ocean Research Station (S-ORS; 37.423°N, 124.738°E). Records of carbon parameters, including seawater CO2 partial pressure (pCO2), revealed considerable seasonal variations, with amplitudes comparable to those observed across the western part of the Yellow Sea. The study site acted as a modest sink (−0.13 mol C m−2 yr−1) for atmospheric CO2. Biological processes (primary production and respiration) and physical conditions (temperature and degree of stratification) determined seawater pCO2, which fluctuated on an intraseasonal timescale between oversaturated and undersaturated with respect to atmospheric pCO2. Variation in pCO2 was significant in summer, depending on the biological carbon drawdown and tidal mixing-induced upwelling (increased pCO2 up to ~1000 μatm). The intraseasonal variability in seawater pCO2 may bias estimated air–sea CO2 fluxes, if measurements with a coarser (seasonal) time resolution are used.

KW - Air–sea CO flux

KW - Coastal ocean

KW - Tidal mixing

KW - Yellow Sea

KW - pCO

UR - http://www.scopus.com/inward/record.url?scp=85132214227&partnerID=8YFLogxK

U2 - 10.1016/j.marpolbul.2022.113822

DO - 10.1016/j.marpolbul.2022.113822

M3 - Article

C2 - 35716491

AN - SCOPUS:85132214227

SN - 0025-326X

VL - 181

JO - Marine Pollution Bulletin

JF - Marine Pollution Bulletin

M1 - 113822

ER -