Article (Scientific journals)
Analysis of surface chlorophyll a associated with sea surface temperature and surface wind in the South China Sea
Huynh, Thi Hong Ngu; Alvera Azcarate, Aida; Beckers, Jean-Marie
2019In Ocean Dynamics
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Keywords :
Chlorophyll a; Sea surface temperature; Monsoon; ENSO; South China Sea; DINEOF
Abstract :
[en] In this study, the spatial and temporal variability in surface chlorophyll a (Chl-a) in the whole South China Sea (SCS) was investigated in detail by using 8-day, 4-km, gap-free MODIS-A data (2003–2016). Monthly climatology and empirical-orthogonal-functions analysis of Chl-a were performed in association with sea surface temperature and surface wind to aid in better understanding the physical mechanisms responsible for the Chl-a variability. The results are as follows: (1) Chl-a has out-of-phase variability between the coastal and open-sea regions due to different major factors controlling phytoplankton growth in each region; (2) in particular, Chl-a increases in the northern SCS during winter and in the western and southwestern SCS during summer mainly due to the effects of monsoons and orography; and (3) wind-driven coastal upwelling is stronger in the western SCS than in the eastern SCS. A wind-induced coastal upwelling not reported in the literature was detected along Palawan Island (8–12°N, 117–120°E) during winter. In the SCS, the Chl-a variability is influenced by the El Niño–Southern Oscillation with a time lag of 4–9 months, depending on the variability scales.
Research center :
GeoHydrodynamics and Environment Research
Disciplines :
Earth sciences & physical geography
Author, co-author :
Huynh, Thi Hong Ngu ;  Université de Liège - ULiège > Doct. sc. (océano. - paysage)
Alvera Azcarate, Aida  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > GeoHydrodynamics and Environment Research (GHER)
Beckers, Jean-Marie  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > GeoHydrodynamics and Environment Research (GHER)
Language :
English
Title :
Analysis of surface chlorophyll a associated with sea surface temperature and surface wind in the South China Sea
Publication date :
2019
Journal title :
Ocean Dynamics
ISSN :
1616-7341
eISSN :
1616-7228
Publisher :
Springer, Germany
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 29 November 2019

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