Seasonal variation of CO2 air-sea flux and effects of warming in the Kuroshio Current of the East China Sea
Journal
Marine Chemistry
Journal Volume
267
Start Page
104469
ISSN
0304-4203
Date Issued
2024-11
Author(s)
Abstract
The partial pressure of CO2 (pCO2) and associated CO2 air-sea flux exhibit highly heterogeneous temporal and spatial patterns in ocean margins. In this study, we analyzed a three-year time-series of data sampled during 2011–2014 along the Kuroshio Current within the East China Sea (ECS) to investigate the seasonal pattern of carbonate chemistry and CO2 air-sea fluxes. Annually, the Kuroshio within the ECS operates as a net CO2 sink at approximately 1.3 mol C m−2 yr−1, less than estimates over the ECS shelf (∼1.8 mol C m−2 yr−1). The thermal control of pCO2 makes the Kuroshio a strong CO2 sink in winter, with a transition to net-neutral, or a weak CO2 source in summer. On an interannual basis, however, the seasonal CO2 air-sea fluxes in the Kuroshio may undergo shifts if warming conditions continue.
Subjects
East China Sea
Kuroshio Current
Pacific Ocean
Air sea flux
Air-sea exchange
Carbon sink
CO2 fluxes
Kuroshio
Kuroshio current
Ocean carbon sink
Pressure of CO2
Seasonal variation
air-sea interaction
carbon dioxide
carbon flux
carbon sink
seasonal variation
Publisher
Elsevier BV
Type
journal article