Intra-seasonal variability of Pacific-origin sea level anomalies around the Philippine Archipelago

Chen, Xiao; Qiu, Bo; Cheng, Xuhua; Qi, Yiquan; Du, Yan

doi:10.1007/s10872-015-0281-9

Cited by 13 publications

(5 citation statements)

References 42 publications

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“…On the other hand, if maximum correlations from Station 1 to Station 7 are considered, the SSH variations at these stations actually lag behind those at Station 10 (Figure b). The existence of Kelvin waves along the eastern Philippine coast has been verified in previous studies (Chen et al, ; Hu et al, ), although this result reveals that coastal Kelvin waves is not the major factor regulating SSH from Station 1 to Station 7. The phenomenon that SSH variations at these stations lag behind those at Station 10 may be linked to the effects of Rossby waves originating from the western tropical Pacific Ocean.…”

Section: Mechanismsupporting

confidence: 59%

Decadal Variation of the Kuroshio Intrusion Into the South China Sea During 1992–2016

Chen

Zhai

2020

JGR Oceans

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Section: Mechanismsupporting

confidence: 59%

Decadal Variation of the Kuroshio Intrusion Into the South China Sea During 1992–2016

Chen

Zhai

2020

JGR Oceans

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“…Previous studies suggest that large-scale dynamical processes over the open ocean area could largely impact SL rise along the coast on a variety of time scales (e.g., Ezer et al, 2013;Chen et al, 2015;Qiu et al, 2015;Minobe et al, 2017;Feng et al, 2022). For example, a significant portion of intraseasonal variability in SL anomalies along the east coast of Philippine is attributed to Rossby waves propagated from the tropical north Pacific (Chen et al, 2015), and local wind forcing may play a minor role during which the remote forcing largely affects the coastal SL. The importance of remote forcing for determining coastal SL changes on longer time scales has been also demonstrated for both western and eastern sides of continents (Minobe et al, 2017;Feng et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Influence of Loop Current and eddy shedding on subseasonal sea level variability along the western Gulf Coast

Shinoda

Tissot²,

Reisinger³

2023

Front. Mar. Sci.

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Mechanisms that generate subseasonal (1-2 months) events of sea level rise along the western Gulf Coast are investigated using the data collected by a dense tide gauge network: Texas Coastal Ocean Observation Network (TCOON) and National Water Level Observation Network (NWLON), satellite altimetry, and high-resolution (0.08°) ocean reanalysis product. In particular, the role of Loop Current and eddy shedding in generating the extreme sea level rise along the coast is emphasized. The time series of sea level anomalies along the western portion of the Gulf Coast derived from the TCOON and NWLON tide gauge data indicate that a subseasonal sea level rise which exceeds 15 cm is observed once in every 2-5 years. Based on the analysis of satellite altimetry data and high-resolution ocean reanalysis product, it is found that most of such extreme subseasonal events are originated from the anti-cyclonic (warm-core) eddy separated from the Loop Current which propagates westward. A prominent sea level rise is generated when the eddy reaches the western Gulf Coast, which occurs about 6-8 months after the formation of strong anti-cyclonic eddy in the central Gulf of Mexico. The results demonstrate that the accurate prediction of subseasonal sea level rise events along the Gulf Coast with the lead time of several months require a full description of large-scale ocean dynamical processes in the entire Gulf of Mexico including the characteristics of eddies separated from the Loop Current.

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“…Besides Kuroshio intrusion, the wind stress curl anomalies are also important in the interior SCS, while the Rossby wave is well responsible for the variation near the eastern boundary (Cheng et al, 2016). Moreover, the remote signal from the tropical Pacific can be conveyed into the eastern SCS in the form of Rossby wave and coastal trapped Kelvin wave on both interannual and intraseasonal timescale (Chen et al, 2015; Zheng et al, 2007; Zhuang et al, 2013). In addition to ENSO, the Indian Ocean Dipole (IOD) can partly explain the interannual variation.…”

Section: Introductionmentioning

confidence: 99%

“…In the northern SCS, the seasonal sea‐level variation is mainly attributed to the local dynamic/thermodynamic forcing and Kuroshio intrusion (Liu et al, 2001b). In the eastern SCS, the baroclinic Rossby wave plays a dominant role, which is generated by the wind stress curl (Chen et al, 2015; Liu et al, 2001b). Along the coast of the Gulf of Thailand, the seasonal variation is associated with monsoon transition (Saramul & Ezer, 2014; Shaw & Chao, 1994).…”

Section: Introductionmentioning

confidence: 99%

Seasonal–interannual–decadal variations of sea level in the South China Sea and connections with the tropical–subtropical Pacific

Tan

Sun

et al. 2023

Intl Journal of Climatology

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Different timescale contributions to the sea‐level variation in the South China Sea (SCS) are evaluated in this paper. On seasonal timescale, the large variance of the sea‐level anomaly (SLA) could account for more than 70% of the monthly sea‐level variation in the western shallow continental shelf and the area of Luzon cold eddy. Besides, the seasonal explained variance percentage (skill) has 2 weak centres (50%–70%) off eastern Vietnam, which is related to the summertime eddy pair in the SCS. On interannual‐to‐decadal (low‐frequency) timescale, the skill has two large‐value regions (Zone A and Zone B). Zone A is characterized by double centres off eastern Vietnam, but the meridional position of the double centres is farther north than that of the eddy pair. The skill in Zone A is in the range of 35%–55%, and about 50%–70% of the low‐frequency variation comes from the steric effect. Zone B is off the west coast of the Philippines. The skill in Zone B increases southward, and it is dominated by the wind‐induced dynamic process which is attributed to the remote Rossby wave from the tropical Pacific. Based on the S‐EOF analysis, the SEOF‐1 mode mainly portrays the decadal variation of the SLA, while the SEOF‐2 mode reflects the interannual variation of the SLA. In Zone B, almost all of the low‐frequency variation could be attributed to ENSO and PDO, especially to PDO which has a larger contribution. However, the double centres in Zone A are governed by the SCS summer monsoon, instead of ENSO and PDO.

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Intra-seasonal variability of Pacific-origin sea level anomalies around the Philippine Archipelago

Cited by 13 publications

References 42 publications

Decadal Variation of the Kuroshio Intrusion Into the South China Sea During 1992–2016

Decadal Variation of the Kuroshio Intrusion Into the South China Sea During 1992–2016

Influence of Loop Current and eddy shedding on subseasonal sea level variability along the western Gulf Coast

Seasonal–interannual–decadal variations of sea level in the South China Sea and connections with the tropical–subtropical Pacific

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