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Spatiotemporal variations and controlling factors of the surface pCO~2~in the northern South China Sea by Yu Ma; Huaming Shi; Tuanjie Li; Ruixiang Li; Yucan Cai; Yan Zhang; Xin Xu; Xiang Wang; Di Wang is a Agricultural and Biological Sciences article available to read on EtoBox.

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## Abstract The focal area of this study was the northern South China Sea (NSCS; 18.5°-22.5°N, 1.0°-8.0°E), located on the northwestern shelf of the SCS. The surfacepCO~2~(pCO~2w~), sea surface temperature (SST) and sea surface salinity (SSS) was measured by continuous measurement system during four field surveys to show their spatiotemporal variations in the NSCS. LowpCO~2w~in the southwestern region of PRE were observed in four seasons, particularly in spring and summer. The Pearl River diluted water (PRDW) discharged a large amount of nutrients into nearshore waters, which promoted phytoplankton propagation and CO~2~uptake in spring and summer. On the contrary, primary productivity was low in winter and late autumn, runoff input of dissolved inorganic carbon (DIC) played important role in increasing thepCO~2~in nearshore waters, so the PRDW controlled the spatiotemporal variations ofpCO~2w~in the coastal and inner shelf. ThepCO~2w~in the outer shelf and slope were relatively high in four seasons, and SST was the critical controlling factor ofpCO~2w~, sea-air CO~2~exchange also played role in the seasonal scales ofpCO~2w~, the impact of weather and climate events on the variation

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Author

Yu Ma; Huaming Shi; Tuanjie Li; Ruixiang Li; Yucan Cai; Yan Zhang; Xin Xu; Xiang Wang; Di Wang

Publisher

IOP Publishing (ISSN 1755-1307)

Published

2020

Language

EN

Field

Agricultural and Biological Sciences (Physical Sciences)