Variabilities of sea level components over the South China Sea based on multi-sensor satellite observations

2020 ◽  
Author(s):  
Jin Sha ◽  
Xiaoming Li
Keyword(s):  
South China Sea ◽  
Sea Level ◽  
South China ◽  
Large Scale ◽  
Seawater Temperature ◽  
Warm Pool ◽  
The South China Sea ◽  
The South ◽  
China Sea ◽  
Relative Contribution

<p>Seawater temperature and salinity are the two key parameters related to the regional sea level variability. In this study, the spatial-temporal variabilities of the thermal and halo steric height over the South China Sea (SCS) are investigated using multi-senor satellite remote sensing products, in-situ measurements and reanalysis. The sea surface temperature and salinity products are used to reconstruct the upper layer sea level components, and the relative contribution of these two components are quantified. It is revealed that the thermal and halo components vary in an out-of-phase pattern, and dominant different regions within SCS. Variabilities of the sea level components on different timescale are further analyzed, and the linkage with large scale processes, such as the indo-pacific warm pool, will be presented.</p>

Characteristics and possible causes of the seasonal sea level anomaly along the South China Sea coast

2017 ◽  
Vol 36 (1) ◽  
pp. 9-16 ◽  
Author(s):  
Hui Wang ◽  
Kexiu Liu ◽  
Zhigang Gao ◽  
Wenjing Fan ◽  
Shouhua Liu ◽  
...  
Keyword(s):  
South China Sea ◽  
Sea Level ◽  
South China ◽  
The South China Sea ◽  
The South ◽  
Sea Level Anomaly ◽  
China Sea ◽  
Sea Coast

Coralline algal assemblages record Miocene sea-level changes in the South China Sea

2021 ◽  
Vol 584 ◽  
pp. 110673
Author(s):  
Yinqiang Li ◽  
Kefu Yu ◽  
Lizeng Bian ◽  
Yeman Qin ◽  
Weihua Liao ◽  
...  
Keyword(s):  
South China Sea ◽  
Sea Level ◽  
South China ◽  
The South China Sea ◽  
Sea Level Changes ◽  
The South ◽  
China Sea ◽  
Algal Assemblages

Seawater Temperature Seasonality in the South China Sea During the Late Holocene Derived From High-Resolution Sr/Ca Ratios of Tridacna Gigas

2015 ◽  
Vol 83 (2) ◽  
pp. 298-306 ◽  
Author(s):  
Hong Yan ◽  
Liguang Sun ◽  
Da Shao ◽  
Yuhong Wang
Keyword(s):  
High Resolution ◽  
South China Sea ◽  
South China ◽  
Late Holocene ◽  
Seawater Temperature ◽  
The South China Sea ◽  
The South ◽  
China Sea ◽  
Tridacna Gigas ◽  
Temperature Seasonality

Temperature seasonality, the difference between summer and winter temperature, has significant influences on global terrestrial and marine ecosystems. However, most of proxy-based climate records are of limited temporal resolution and thus insufficient to quantify the past temperature seasonality. In this study, high-resolution Sr/Ca ratios of modern (live-caught) and fossil (dead-collected) Tridacna gigas shells from the South China Sea (SCS) were used to reconstruct the seawater temperature seasonality during the late Holocene. The averaged seawater temperature seasonality around 2165 ± 75 BC (4.46 ± 1.41°C, derived from the data of 18 yr) were similar to the seasonality of recent decade (4.41 ± 0.82°C during AD 1994–2005), but the temperature seasonality around AD 50 ± 40 (3.69 ± 1.37°C, derived from the data of 48 yr) and AD 990 ± 40 (3.64 ± 0.87°C, derived from the data of 11 yr) was significantly lower than that during AD 1994–2005. The reduced seasonality around AD 990 ± 40 was attributable to the unusually warm winter during the medieval times, probably caused by the weakening of East Asian Winter Monsoon. Our study highlighted the potential of T. gigas shells in providing high-resolution seasonality climate information during the late Holocene.

Sedimentary responses to the Pleistocene climatic variations recorded in the South China Sea

2007 ◽  
Vol 68 (1) ◽  
pp. 162-172 ◽  
Author(s):  
Sébastien Boulay ◽  
Christophe Colin ◽  
Alain Trentesaux ◽  
Stéphane Clain ◽  
Zhifei Liu ◽  
...  
Keyword(s):  
Grain Size ◽  
South China Sea ◽  
Sea Level ◽  
South China ◽  
East Asian Monsoon ◽  
River Mouth ◽  
The South China Sea ◽  
The South ◽  
China Sea ◽  
Sea Level Variations

AbstractGrain-size analyses, coupled with end-member modelling, have been performed on the terrigenous fraction of two Leg 184 Ocean Drilling Program sites (1144 and 1146) from the South China Sea. The grain-size distributions over the last 1.8 Ma enable a new interpretation of their connections to sea-level variations and East Asian monsoon strength. Previous investigations in this area have associated grain-size variability with enhanced eolian input during glacial stages. End-member modelling downgrades the importance of this eolian contribution and indicates that the sediments can be described as a mixture of three end-members: fluvial mud inputs, shelf reworking and river mouth migration. Grain-size variations in the Pleistocene section of the cores indicate a multiple-stage evolution: (i) from 1.8 to 1.25 Ma, the downcore grain-size variations are low but show a correspondence between monsoon rainfall intensity and the fine grain-sized fluvial inputs; no link with sea-level variations is noticeable; (ii) from 1.25 to 0.9 Ma, there is an increase (decrease) in the intermediate (fine) end-member (∼ 100 kyr cycle) that is associated with the onset of a stronger summer monsoon and modest shelf reworking; (iii) from 0.9 to 0 Ma the grain-size record is dominated by global sea-level variations; each glacial stage is associated with extensive shelf reworking and conveyance of coarse particles to the basin.

scholarly journals Analysis of Severe Droughts in Taiwan and its Related Atmospheric and Oceanic Environments

Atmosphere ◽  
2019 ◽  
Vol 10 (3) ◽  
pp. 159 ◽  
Author(s):  
Chih-wen Hung ◽  
Ming-Fu Shih
Keyword(s):  
South China Sea ◽  
South China ◽  
Large Scale ◽  
Drought Index ◽  
The South China Sea ◽  
Severe Drought ◽  
The South ◽  
China Sea ◽  
Dry Conditions ◽  
Oceanic Environments

Drought is one of the important issues in climate studies. A drought index, Taiwan Meteorological Drought index (TMD index), was previously proposed and is applied here to identify historical severe droughts in Taiwan in order to clarify the corresponding large-scale backgrounds as a potential alert to the society in future. Through the TMD index, several historical severe drought cases in Taiwan are detected and characterized by significant seasonal variability in the annual cycle. Composites for large-scale atmospheric and oceanic environments over different periods within the dry season are conducted. From October to December, the colder sea surface temperature (SST) pattern of Pacific Meridional Mode (PMM) and the PMM-induced local anomalous anticyclones over the South China Sea are both in charge of the extremely dry conditions in Taiwan. From January to February, cold SST in the South China Sea and its adjacent oceans dominates local atmospheric conditions above these regions and creates an unfavorable environment for convection systems. From March to May, a massive anomalous anticyclonic circulation centering beside Alaska and extending its properties to East Asia and Taiwan generates a descending environment and in turn suppresses convection systems to develop. Therefore, the extremely dry conditions under this system are expected.

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