Observations on seasonal variations of colored dissolved organic matter (CDOM) subsurface maximum in the Mediterranean Sea

XING Xiaogang; ZHAO Dongzhi; CLAUSTRE Herv&#233;; FAN Wei

doi:10.3969/j.issn.0253 4193.2013.02.005

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XING Xiaogang, ZHAO Dongzhi, CLAUSTRE Hervé, FAN Wei. Observations on seasonal variations of colored dissolved organic matter (CDOM) subsurface maximum in the Mediterranean Sea[J]. Haiyang Xuebao, 2013, 35(2): 35-42. doi: 10.3969/j.issn.0253 4193.2013.02.005

Citation:

XING Xiaogang, ZHAO Dongzhi, CLAUSTRE Hervé, FAN Wei. Observations on seasonal variations of colored dissolved organic matter (CDOM) subsurface maximum in the Mediterranean Sea[J]. Haiyang Xuebao, 2013, 35(2): 35-42. doi: 10.3969/j.issn.0253 4193.2013.02.005

Citation:

XING Xiaogang, ZHAO Dongzhi, CLAUSTRE Hervé, FAN Wei. Observations on seasonal variations of colored dissolved organic matter (CDOM) subsurface maximum in the Mediterranean Sea[J]. Haiyang Xuebao, 2013, 35(2): 35-42. doi: 10.3969/j.issn.0253 4193.2013.02.005

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Observations on seasonal variations of colored dissolved organic matter (CDOM) subsurface maximum in the Mediterranean Sea

doi: 10.3969/j.issn.0253 4193.2013.02.005

1.
Physical Oceanography Laboratory, Ocean University of China, Qingdao 266003, China
2.
National Marine Environmental Monitoring Center, Dalian 116023, China
3.
Laboratoire d'oceanographie de Villefranche, Villefranche sur mer 06230, France
4.
Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China

Received Date: 2012-07-02
Rev Recd Date: 2012-10-20

Abstract

Abstract

Based on the in situ dataset observed by two Bio-Argo floats deployed in the northwestern and eastern basins of Mediterranean Sea in 2008-2009, this study focuses on the seasonal variations of colored dissolved organic matter (CDOM) subsurface maximum. The research results show that the subsurface CDOM bloom started in summer accompanied by gradual decreasing of chlorophyll-a concentration, and disappeared in winter owing to deep mixing effect. In addition, the depth of subsurface CDOM maximum was always following the depth of deep chlorophyll-a maximum (DCM) during the CDOM bloom period, which suggests that the source of oceanic CDOM is almost certainly the result of phytoplankton degradation, although chlorophyll and CDOM are not correlated directly. It is assumed that a probable strong coupling between phytoplankton and bacteria leads to the obvious contravariance observed between CDOM and chlorophyll-a.
- Bio-Argo,
- Mediterranean Sea,
- colored dissolved organic matter (CDOM),
- seasonal variations,
- chlorophyll-a

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References(24)

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