Monthly and seasonal variations in the surface carbonate system and air-sea CO flux of the Yellow Sea.

Mar Pollut Bull

OJEong Resilience Institute, Korea University, Seoul 02841, Republic of Korea; Division of Environmental Science and Ecological Engineering, Korea University, Seoul 02841, Republic of Korea. Electronic address:

Published: August 2022

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 CO partial pressure (pCO), 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 yr) for atmospheric CO. Biological processes (primary production and respiration) and physical conditions (temperature and degree of stratification) determined seawater pCO, which fluctuated on an intraseasonal timescale between oversaturated and undersaturated with respect to atmospheric pCO. Variation in pCO was significant in summer, depending on the biological carbon drawdown and tidal mixing-induced upwelling (increased pCO up to ~1000 μatm). The intraseasonal variability in seawater pCO may bias estimated air-sea CO fluxes, if measurements with a coarser (seasonal) time resolution are used.

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.marpolbul.2022.113822DOI Listing

Publication Analysis

Top Keywords

yellow sea
12
seasonal variations
8
surface carbonate
8
seawater pco
8
pco
6
monthly seasonal
4
variations surface
4
carbonate system
4
system air-sea
4
air-sea flux
4

Similar Publications

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!