https://scholars.lib.ntu.edu.tw/handle/123456789/606315
Title: | Mooring observed intraseasonal oscillations in the central South China Sea during summer monsoon season | Authors: | Jan S Chang M.-H Yang Y.J Sui C.-H Cheng Y.-H Yeh Y.-Y CHUNG-HSIUNG SUI MING-HUEI CHANG SEN JAN YIING-JANG YANG |
Keywords: | article;oscillation;rainy season;sea level rise;seashore;South China Sea;summer | Issue Date: | 2021 | Journal Volume: | 11 | Journal Issue: | 1 | Source: | Scientific Reports | Abstract: | The South China Sea (SCS) is a high biodiversity region in the world ocean, supports abundant marine resources to the peripheral nations, and affects weather/climate in southeast Asia. A better understanding of its circulation is important to better prediction and management of the SCS. Here we reveal sizable intraseasonal oscillations at period ~ 50?days between May and November 2017 in the acoustic Doppler current profiler observed velocity in the central SCS. Satellite observed wind and sea level data together with a process-oriented numerical experiment suggest that the oscillations were caused by locally-generated and remotely-penetrated westward-propagating Rossby waves. The summer southwesterly monsoon strengthening/weakening and the resultant Ekman pumping velocity and shoreward Ekman transport increase/decrease and consequent coastal sea level rise/fall off the west coast of Palawan create westward-propagating Rossby waves causing velocity oscillations in the central SCS. Besides the local generation, Rossby waves with sea level anomaly > 0.2?m propagating from the Pacific through the Sulu Sea into the SCS could contribute to the intraseasonal velocity oscillations in the central SCS. ? 2021, The Author(s). |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85109153689&doi=10.1038%2fs41598-021-93219-3&partnerID=40&md5=fa113517ab997a032550882dfede16bc https://scholars.lib.ntu.edu.tw/handle/123456789/606315 |
ISSN: | 20452322 | DOI: | 10.1038/s41598-021-93219-3 |
Appears in Collections: | 大氣科學系 |
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