caa a22 4500 605455236 CHVBK 20210128100211.0 cr unu---uuuuu 210128e20150201xx s 000 0 eng 10.1007/s10872-014-0265-1 doi (NATIONALLICENCE)springer-10.1007/s10872-014-0265-1 Impacts of South China Sea throughflow on the mean state and El Niño/Southern Oscillation as revealed by a coupled GCM [Elektronische Daten] [Tomoki Tozuka, Tangdong Qu, Toshio Yamagata] The South China Sea (SCS) throughflow (SCSTF) enters the SCS from the Luzon Strait and exits it through the straits to the south. Using a coupled general circulation model (CGCM), this study reveals impacts of the SCSTF on the mean state and El Niño/Southern Oscillation (ENSO). It is found that the model's sea surface temperature becomes cooler in the eastern and far western equatorial Pacific and south of Japan, but significantly warmer in the SCS, when the SCSTF is blocked. The warming in the SCS is likely a result of accumulated surface heat flux which otherwise would be transported out of the SCS by the SCSTF. Furthermore, the dominant period of ENSO is 4years when the SCSTF is allowed, but it becomes 5years when the SCSTF is blocked. This is because the meridional extent of zonal wind anomalies becomes broader and the Walker Circulation in the Indian Ocean becomes stronger in the no-SCSTF case. On the other hand, changes in the zonal location of zonal wind anomalies, the phase speed of baroclinic Kelvin waves, the occurrence of westerly wind bursts, and strength of atmospheric feedbacks do not contribute to the difference between the two experiments even though they are known to influence the ENSO period. The climatic importance of the SCSTF has been so far overlooked because of its small volume transport compared with other major currents in the global ocean, but the present work shows for the first time its possible impacts on ENSO. The Oceanographic Society of Japan and Springer Japan, 2014 South China Sea nationallicence ENSO nationallicence Coupled general circulation model nationallicence Walker circulation nationallicence South China Sea throughflow nationallicence Indonesian throughflow nationallicence Tozuka Tomoki Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, 113-0033, Bunkyo-Ku, Tokyo, Japan aut Qu Tangdong International Pacific Research Center, SOEST, University of Hawaii at Manoa, 1680 East-West Road, 96822, Honolulu, HI, USA aut Yamagata Toshio Application Laboratory, JAMSTEC, 3173-25 Showa-machi, Kanazawa-Ku, 236-0001, Yokohama, Kanagawa, Japan aut Journal of Oceanography Springer Japan 71/1(2015-02-01), 105-114 0916-8370 71:1<105 2015 71 10872 https://doi.org/10.1007/s10872-014-0265-1 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10872-014-0265-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Tozuka Tomoki Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, 113-0033, Bunkyo-Ku, Tokyo, Japan aut NATIONALLICENCE 700 1- Qu Tangdong International Pacific Research Center, SOEST, University of Hawaii at Manoa, 1680 East-West Road, 96822, Honolulu, HI, USA aut NATIONALLICENCE 700 1- Yamagata Toshio Application Laboratory, JAMSTEC, 3173-25 Showa-machi, Kanazawa-Ku, 236-0001, Yokohama, Kanagawa, Japan aut NATIONALLICENCE 773 0- Journal of Oceanography Springer Japan 71/1(2015-02-01), 105-114 0916-8370 71:1<105 2015 71 10872