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Updated: Sep 14, 2025

Investigating the Relationship between Sea Surface Chlorophyll and Major Features of the South China Sea with Satellite Information
Published on: June 13, 2020
Dual Control of the Ocean Current and Terrestrial Inputs on GDGT-Based Sea Surface Temperature Reconstructions in the
Ming Shao1,2, Yu Pei3, Shengyin Zhang1,2
1Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China.
Abstract:
Understanding past climate variations is essential for predicting future climate scenarios. Glycerol dialkyl glycerol tetraethers (GDGTs) are valuable proxies for reconstructing past climates, yet their applicability in dynamic, high-deposition environments, such as continental marginal seas, remains uncertain. In this study, we analyzed GDGT distributions in 20 surface sediment samples collected along a longitudinal transect (121° 58' 48″ E) spanning different latitudes in the Southern Yellow Sea (SYS), China. Results indicate that terrestrial inputs, mainly transported by the Old Yellow River, significantly affect sea surface temperature (SST) reconstructions. SST variations in SYS are predominantly controlled by the Yellow Sea Warm Current (YSWC), with additional influences from the latitude and proximity to the coast. Our findings demonstrate that GDGT-based proxies provide reliable climate reconstructions even in marginal seas characterized by complex sedimentary environments and mixed organic matter sources.
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