Distribution of Changjiang Diluted Water detected by satellite chlorophyll-a and its interannual variation during 1998–2007

Kim, Hyuncheol; Yamaguchi, Hiroichiro; Yoo, Sinjae; Zhu, Jianrong; Okamura, Kazumaro; Kiyomoto, Yoko; Tanaka, Katsuhisa; Kim, Sang-Woo; Park, Taewook; Oh, Im Sang; Ishizaka, Joji

doi:10.1007/s10872-009-0013-0

Cited by 97 publications

(77 citation statements)

References 16 publications

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“…As the largest contributor of freshwater and nutrients to the Yellow Sea and the East China Sea, the CDW significantly affects the dynamics and biological processes in these areas. The spatial distribution of higher chlorophyll-a concentrations corresponds well with the distribution of low-salinity CDW (Kim et al, 2009). Zhu (2005) noted that high chlorophyll-a concentrations were induced by eutrophication due to abundant nutrients in the CDW.…”

Section: Introductionsupporting

confidence: 62%

Distribution of hypoxia and pycnocline off the Changjiang Estuary, China

Zhu

Lin

et al. 2016

Journal of Marine Systems

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Section: Introductionsupporting

confidence: 62%

Distribution of hypoxia and pycnocline off the Changjiang Estuary, China

Zhu

Lin

et al. 2016

Journal of Marine Systems

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“…Again, for the TWC the model shows satisfactory agreement with observations (Guan and Fang, 2006;Hu et al, 2010;Isobe, 2008;Su et al, 1994). At the same time, it is also worthwhile noting that the relatively weak southward coastal current immediate south of the Changjiang River (Fan et al, 2011;Kim et al, 2009) is also correctly reproduced. In addition, the ocean current northeast of Taiwan is more clearly shown in an enlarged map (see Fig.…”

Section: Model Resultsmentioning

confidence: 66%

Numerical study on the origins and the forcing mechanism of the phosphate in upwelling areas off the coast of Zhejiang province, China in summer

Yang

Yin

Sun

et al. 2013

Journal of Marine Systems

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Off the coast of Zhejiang province, China, algal blooms are frequently observed where the phosphate seems to be an essential ingredient to dominate the growth of the phytoplankton in summer. Therefore, the observed high phosphate distributions off the coast of Zhejiang are closely examined to find out the dominant phosphate origin as well as the underlying forcing mechanism in summer. The observed phosphate distribution has been faithfully reproduced by our numerical model based on the Regional Ocean model System (ROMS). Then, on the basis of the numerical experiments as well as the observations, we propose that the phosphate off the coast of Zhejiang mainly originates from the deep sea water in a special area (122.1°E-z122.5°E, 130 m-300 m deep) along 24.9°N northeast of Taiwan. Also, the forcing mechanism is clearly illustrated. In the bottom water of southern East China Sea, huge phosphate is continuously transported to the area off the coast of Zhejiang by a nearshore Kuroshio branch current which links the phosphate-rich deep sea water to the bottom water off the coast of Zhejiang. Then, off the coast of Zhejiang the transported phosphate-rich water is further upwelled to the surface water due to an upwelling just off the coast of Zhejiang. Then, the upwelled phosphate-rich water is transported offshore in the surface water by the northeastward flowing Taiwan Warm Current, forming a high phosphate tongue which can be easily utilized by the phytoplankton and then immediately explains the observed high chlorophyll tongue off the coast of Zhejiang.Crown

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“…Consequently, we suggest that the optical properties of the CDW can be characterized by CDOM, and thus satellitederived aCDOM might be an indicator of the CDW. Kim et al (2009) reported that the distribution of satellite-derived high chlorophyll a (Chl a) data approximately corresponded to that of CDW during summer. The CDW likely contains both CDOM and phytoplankton growing on river-supplied nutrients, and both likely contribute to the ocean color that traces the CDW plume in satellite imagery.…”

Section: Satellite-derived Acdom Datamentioning

confidence: 99%

“…Prior to the work reported herein, the principal satellitederived observations of the CDW were based on chlorophyll concentration (Kiyomoto et al 2001;Yuan et al 2005;Gong et al 2006;Kim et al 2009;Shi and Wang 2012). These studies showed that the CDW has profound effects on the physical and biological processes that occur on the ECS shelf.…”

Section: Introductionmentioning

confidence: 99%

Unique Dispersal of the Changjiang-Diluted Water Plume in the East China Sea Revealed from Satellite Monitoring of Colored Dissolved Organic Matter (CDOM)

Sasaki¹,

Gomi²,

Asai³

et al. 2014

Terr. Atmos. Ocean. Sci.

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The optical properties of colored dissolved organic matter (CDOM) in the Changjiang (Yangtze River) plume water were investigated during the summer of 2009 and 2010. The absorption coefficient of CDOM at 325 nm (aCDOM) increased inversely with decreasing sea-surface salinity (SSS), implying that aCDOM can be used as a natural tracer of Changjiangdiluted water (CDW). This aCDOM vs. SSS relationship, however, differed between 2009 and 2010. For mapping the CDW plume, the aCDOM was retrieved from an ocean-color satellite. Values of SSS were also derived from the satellite-retrieved aCDOM using field-based SSS vs. aCDOM relationships. Satellite observations revealed the temporary variable eastward extension of a high aCDOM, low SSS CDW plume in the central East China Sea (ECS) during the summer. The CDW plume during the summer of 2010 extended southeastward from the mouth of the Changjiang (Yangtze River) to almost 26°N. Moreover, the branch of this southeastward CDW plume was seen to extend northeastward to the eastern ECS where the Kuroshio Current flows northeastward along the shelf break. Subsequently, this branch was distributed around southern Kyushu. Satellite observations revealed this unique dispersal of the CDW plume, which illustrates that the aCDOM and SSS from oceancolor satellite data are useful for monitoring the dispersal of this river-water plume.

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Distribution of Changjiang Diluted Water detected by satellite chlorophyll-a and its interannual variation during 1998–2007

Cited by 97 publications

References 16 publications

Distribution of hypoxia and pycnocline off the Changjiang Estuary, China

Distribution of hypoxia and pycnocline off the Changjiang Estuary, China

Numerical study on the origins and the forcing mechanism of the phosphate in upwelling areas off the coast of Zhejiang province, China in summer

Unique Dispersal of the Changjiang-Diluted Water Plume in the East China Sea Revealed from Satellite Monitoring of Colored Dissolved Organic Matter (CDOM)

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