Variability of sea surface salinity and chlorophyll in the Yellow and East China Sea: ENSO effects

Title
Variability of sea surface salinity and chlorophyll in the Yellow and East China Sea: ENSO effects
Author(s)
장찬주; 박태욱
KIOST Author(s)
Jang, Chan Joo(장찬주)
Alternative Author(s)
장찬주
Publication Year
2016-03-24
Abstract
El Niñ o– Southern Oscillation (ENSO) has known to affect inter-annual variability in both physical and biological aspects in relation in the Yellow and East China Seas (YECS). In this study, we examine inter-annual variability of summer sea surface salinity (SSS) and chrolophyll (CHL) in the YECS and its relation with ENSO, using a global ocean general circulation model (OGCM) with a regional focus on the YECS. A cyclostationary EOF (CSEOF) shows that Changjiang River discharge (CRD) contributes to the dominant inter-annual variability of the SSS in the YECS. The variability of the CRD is linked to ENSO through changes in precipitation over the Changjiang River. When El Niñ o events occur in winter, precipitation over the Changjiang River increases in the rainy season of the following year through enhanced southwesterly moisture flux from the South China Sea into southern China. The increased CRD in El Niñ o years also appears to increase CHL-a concentration by supplying more nutrients into the YECS, suggesting that the ENSO is likely to affect biological production in the YECS by changing CRD. Our finding suggests that ENSO may contribute to inter-annual variability of both physical and biological processes in the YECS by modulating CRD through precipitation changes over the Changjiang River. of summer sea surface salinity (SSS) and chrolophyll (CHL) in the YECS and its relation with ENSO, using a global ocean general circulation model (OGCM) with a regional focus on the YECS. A cyclostationary EOF (CSEOF) shows that Changjiang River discharge (CRD) contributes to the dominant inter-annual variability of the SSS in the YECS. The variability of the CRD is linked to ENSO through changes in precipitation over the Changjiang River. When El Niñ o events occur in winter, precipitation over the Changjiang River increases in the rainy season of the following year through enhanced southwesterly moisture flux from the South China Sea into southern China. The increased CRD in El Niñ o years also appears to increase CHL-a concentration by supplying more nutrients into the YECS, suggesting that the ENSO is likely to affect biological production in the YECS by changing CRD. Our finding suggests that ENSO may contribute to inter-annual variability of both physical and biological processes in the YECS by modulating CRD through precipitation changes over the Changjiang River.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/24921
Bibliographic Citation
7차 CJK 임버 심포지움, pp.1, 2016
Publisher
해양수산부,SCOR,IMBER,KIOST
Type
Conference
Language
English
Publisher
해양수산부,SCOR,IMBER,KIOST
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