Sun Zhao-hua

South China Sea Institute Of Oceanology

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Trends

Author Order

Document Type

Co-Authors

Guifen Wang

Hohai University

Cao Wen-xi

Chinese Academy of Sciences

Ruqing Tong

State Key Laboratory of Information Engineering in Surveying Mapping and Remote Sensing

Qiang Yang

Chengdu University of Information Technology

Li Cai

Chongqing Three Gorges University

Sen Li

Henan Polytechnic University

Qingjun Song

National Satellite Ocean Application Service

Jianping Yin

South China Sea Institute Of Oceanology

Wen Zhou

City University of Hong Kong

Yong Li

Sun Yat-sen Memorial Hospital

Cooperative Institutions

Chinese Academy of Sciences

Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)

South China Sea Institute Of Oceanology

Ministry of Natural Resources

University of Chinese Academy of Sciences

Nanjing Institute of Geography and Limnology

Institute of Oceanology

China Meteorological Administration

Ministry of Water Resources of the People's Republic of China

Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai)

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Field

Progress on ocean-color remote sensing of particulate organic carbon

Redai haiyang xuebao (2012)

Guifen Wang Cao Wen-xi Jianping Yin Wen Zhou Sun Zhao-hua

Particulate organic carbon(POC) is an important variable in studying carbon cycle in the ocean.Ocean-color remote sensing of POC provides a useful means for monitoring the variation of carbon cycle on a large scale.This paper is a review on the progress of ocean-color retrieval of POC from satellite data at home and abroad.A brief introduction was given first about sample collecting methods of POC and error analysis.Bio-optical relationships between POC and optical properties were then described in detail.Present ocean-color algorithms for retrieving POC were categorized and compared,and their applications in detecting multi-scale variability of marine ecosystem were summarized.Research perspectives on future study of POC retrieval from ocean color in China were proposed at last.

Ocean color

Particulate organic carbon

Carbon fibers

Source

Cite

Citations (2)

Retrieval of phytoplankton size parameter from phytoplankton absorption spectra

Redai haiyang xuebao (2010)

Sun Zhao-hua

Data from three cruises conducted in the northern South China Sea (SCS),the Daya Bay and the Pearl River Estuary,respectively,were examined to access the variations of phytoplankton size structure. A spectral mixing model was established to retrieve phytoplankton size parameter from phytoplankton absorption spectra,with Sf as a proxy of the size parameter. There were significant similarities in phytoplankton size structure in the estuarine and coastal waters; however,it is very dif-ferent in the open ocean. In the estuarine and coastal waters,the micro-phytoplankton plays a dominant role,while in the open ocean the pico-phytoplankton was the dominant species. Phytoplankton size parameter tended to decrease with increasing micro-phytoplankton,and to increase with increasing pico-phytoplankton. There was an increasing trend for chlorophyll a concentration from the open ocean to the coastal sea. Phytoplankton size parameter showed a power function relation with chlorophyll a concentration and decreased with increasing chlorophyll a concentration. The results showed that there was a relationship between phytoplankton size parameter retrieved from the spectral mixing model and the bio-optical characteristics in different circumstances of the SCS. This spectral mixing model provided a simple tool for extracting ecological information of phytoplankton species from optical measurements,and can be used to analyze the influence of dominant phytoplankton size structure on optical characteristics.

Source

Cite

Citations (2)

Development of a Novel Floating Water Spectral Measurement System Based on Skylight-Blocked Approach

Guangpuxue yu guangpu fenxi (2020)

Li-qiao Tian Sen Li Xiang-han Sun Ruqing Tong Qingjun Song

Skylight

10.3964/j.issn.1000-0593(2020)09-2756-08

Cite

Citations (0)

Effects of algal cell structure on the optical properties of phytoplankton

Zhou Wen Cao Wen-xi Li Cai Guifen Wang Sun Zhao-hua

The algal cells were first simplified as two-layer structure consisting of cytoplasm and chloroplast, and based on Aden-Kerker theory, the influence of physical properties of algal cells on their optical properties was then discussed. The re- sults were also compared with the optical properties of homogenous spherical algal cells. They showed that, compared to ho- mogenous spherical cell structure, the cell structures with chloroplast as outer would enhance the backscattering efficiency factor and backscattering ratio, while the cell structure with chloroplast as core would reduce the absorption efficiency due to package efficiency; For the algal cells with chloroplast as outer, the variations of cell size, relative chloroplast volume and the imaginary part of refractive index of chloroplast would have important influence on absorption efficiency of algae; both cell size and the real part of refractive index of chloroplast were the two key factors for backscattering efficiency and backscat- tering ratio of algae.

Cell structure

Cite

Citations (2)