Haili Wang

Xiamen University | XMU · State Key Laboratory of Marine Environmental Science

The particulate backscattering coefficient (bbp) provides effective proxies for particulate organic carbon (POC) and phytoplankton carbon (Cphy); however, their bio-optical relationships in the oligotrophic ocean are rarely reported. In this work, based on the in-situ synchronous optical and biogeochemical measurements in the oligotrophic South Chi...

Super typhoon Rammasun (2014) traveled across the South China Sea on July 16-18. Its far-field impacts on phytoplankton dynamics in the upper ocean were documented by a Biogeochemical-Argo (BGC-Argo) float located 200 km to the left of its track. Both surface chlorophyll-a concentration (Chla) and particulate backscattering coefficient (b bp) were...

Plain Language Summary Particulate organic matter, produced by phytoplankton in the upper ocean, can sink through the water column and act as a source of organic matter to the deep ocean. These particles are decomposed to carbon dioxide by microorganisms, resulting in dissolved inorganic carbon and organic carbon resistant to decomposition in the d...

The Argo Program has been implemented and sustained for almost two decades, as a global array of about 4000 profiling floats. Argo provides continuous observations of ocean temperature and salinity versus pressure, from the sea surface to 2000 dbar. The successful installation of the Argo array and its innovative data management system arose opport...

The Argo Program has been implemented and sustained for almost two decades, as a global array of about 4000 profiling floats. Argo provides continuous observations of ocean temperature and salinity versus pressure, from the sea surface to 2000 dbar. The successful installation of the Argo array and its innovative data management system arose opport...

Two Bio‐Argo floats measured the concentration of chlorophyll‐a, the backscattering coefficient, the fluorescence of humic‐like dissolved organic matter, dissolved oxygen, and temperature and salinity in the northern and central basins of the South China Sea for over 2 years. Temporal evolutions of bio‐optical properties were analyzed at surface, s...

The variability of chlorophyll a concentration (Chl a) in the open South China Sea (SCS) was examined using observations from two Bio-Argo floats. During the period of September 2014 to August 2015, there was a permanent subsurface Chl a maximum (SCM) in the depth range of 48 to 96 m in the central basin of the SCS. In the northern basin, the SCM d...

Based on in situ datasets collected using two Bio-Argo floats deployed in the sub-polar North Atlantic from June, 2008 to May, 2010, the present study focuses on the seasonal variability of three bio-optical properties, i.e. chlorophyll-a concentration ([Chla]), particle backscattering coefficient at 532 nm (bbp(532)), and particle beam attenuation...

Data collected from 12 marine monitoring stations in Daya Bay from 2001 to 2004 reveal a substantial change in ecological environment in this region. Cluster analysis based on water quality and zooplankton results divided stations into three clusters: Cluster I consisted of stations S1, S2 and S6 in the south part of Daya Bay; Cluster II consisted...

In order to demonstrate that silicate (SiO3-Si) can be used as an indicator to study upwelling in the northern South China Sea, hierarchical cluster analysis (CA) and principle component analysis (PCA) were applied to analyse the metrics of the data consisting of 14 physical-chemical-biological parameters at 32 stations. CA categorized the 32 stati...

Physicochemical and benthos data were collected from 12 marine monitoring stations in Daya Bay, during 2001-2004. 12 stations in Daya Bay could be grouped into three clusters: cluster I consisted of stations in the southern part of Daya Bay (stations S1, S2 and S6); cluster II consisted of stations in the cage culture areas (stations S3, S4, S5 and...

5 [1] Global time series of satellite‐derived winds and surface chlorophyll concentration 6 (Chl‐a) show patterns of coherent areas with either positive or negative correlations. The 7 correlation between Chl‐a and wind speed is generally negative in areas with deep 8 mixed layers and positive in areas with shallow mixed layers. These patterns are...

In this paper, cluster analysis (CA), principal component analysis (PCA) and the fuzzy logic approach were employed to evaluate the trophic status of water quality for 12 monitoring stations in Daya Bay in 2003. CA grouped the four seasons into four groups (winter, spring, summer and autumn) and the sampling sites into two groups (cluster DA: S1, S...

Carbon cycling in Southern Ocean is a major issue in climate change, hence the need to understand the role of biota in the regulation of carbon fixation and cycling. Southern Ocean is a heterogeneous system, characterized by a strong seasonality, due to long dark winter. Yet, currently little is known about biogeochemical dynamics during this seaso...

Thirteen water quality parameters from 12 monitoring stations were collected to study the effects caused by climate and anthropogenic activities on water quality in 2003 in Daya Bay, South China Sea. The data matrix has been built according to the results, which were analyzed by fuzzy c-mean cluster (FCM) and cluster analysis (CA). This analysis ha...

This research was supported by the project of knowledge innovation program of the Chinese Academy of Sciences (No. KZCX2-YW-Q07-02 & No. KSCX2-SW-132), the project of knowledge innovation program of the South China Sea Institute of Oceanology (No. LYQ200701) and the National 908 project (No. 908-02-04-04).AbstractIn this paper, chemometric approach...

The light management of phytoplankton can be assessed in situ on time scales shorter than those of the non-photochemical fluorescence quenching (q(n)) mechanisms. We adopted fast repetition rate fluorometry to water column studies in the northwest Pacific Ocean and its adjacent shelf seas. Near-surface depression of the photochemical energy convers...

Processes influencing phytoplankton bloom development in the southern Drake Passage were studied using shipboard iron-enrichment incubations conducted across a surface chlorophyll gradient near the Antarctic Peninsula, in a region of water mass mixing. Iron incubation assays showed that Antarctic Circumpolar Current (ACC) waters were severely iron...

Size-fractionated phytoplankton biomass, primary productivity, photosynthetic dissolved organic carbon (PDOC), vertical distribution of pico-, nano-, and microphytoplankton, and the relationship with bacteria were studied in the Taiwan Strait during 2 cruises conducted in August 1994 and February-March 1995. Nanophytoplankton (3 to 20 mu m) dominat...

It is now well established that the size distribution of phytoplankton plays an important role in primary production processes and nutrient dynamics of coastal environment. In situ observations showed that nanophytoplankton (3–20 µm) contributed 72.08% and58.18% of phytoplankton biomass and 58.32% and 41.14% of primary productivity to Xiamen Wester...