Han Gui-jun

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Guihua Wang

Fudan University

Xiaotu Lei

China Meteorological Administration

Ma Jirui

Institute of Scientific and Technical Information

Dake Chen

Second Institute of Oceanography

Xue‐Feng Zhang

Chongqing University

Lei Zhou

Shanghai Jiao Tong University

Dongxiao Wang

Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)

Kexiu Liu

Shandong Marine Resource and Environment Research Institute

Wei Wang

Qingdao National Laboratory for Marine Science and Technology

Wei Li

China Southern Power Grid (China)

Cooperative Institutions

Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)

Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai)

Fudan University

Chinese Academy of Sciences

China Meteorological Administration

Sichuan University

Shanghai Meteorological Bureau

Ministry of Natural Resources

Zhejiang Ocean University

Sun Yat-sen University

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Study on the features and frontogenesis mechanism of Kuroshio front to the east of Taiwan

Marine Science Bulletin (2011)

Han Gui-jun

Oceanic front is an important phenomenon and is of great significance for research.Although the surface thermal front to the east of Taiwan is not obvious,there is an all-year strong Kuroshio thermal front under the surface,the research on which is rare at this time.Reanalysis method was used in this study to demonstrate the existence of thermal front in this area,study the temporal and spatial variation of the Kuroshio front and discuss the mechanism of frontogenesis.

Frontogenesis

Cold front

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A Study on the Application of Varational Adjoint Method to the Numerical Computation of Sectional Sea Temperature

Marine Science Bulletin (2004)

Han Gui-jun

In this paper the variational adjoint method is applied to the assimilation of the observed data into the sectional distribution of sea temperature to optimize the initial field .The fundamentals of the variational adjoint method are introduced briefly, and then we derive the adjoint model systems from the continuous and discrete forms of the forward model equation respectively. The relation between the two adjoint systems is also discussed. The numerical results are encouraging, which shows a promising prospect of the application of the variational adjoint method to the sea temperature numerical computation and prediction.

Adjoint equation

Variational method

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Prevalence Survey of Commonly Pathogenic Bacteria in Clinic

China Preventive Medicine (2005)

Han Gui-jun

Objective To understand the types of commonly pathogenic bacteria in clinic and to provide doctors with evidence for their diagnosis and prescription and to control the abuse of antibiotics. Methods Cluster sampling method was used and the results were analyzed for cultivable bacteria in several representative hospitals of Chengde city from May 1998 to May 2000. Results Of 1393 positive cultivable bacteria 67.98% was G~- bacteria and the sequence in descending was: escheriohia, enterobacter and pseudomonas. 22.90% was G~+ bacteria the descending order was: staphylococcus, enterobacter and pneumococcus. Conclusion In order to prevent the abuse of antibiotics and to minimize drug resistance it should not be used as over-the-counter medications(OTC). Patients ought to obey doctors' prescription according to the experiment of drug susceptibility.

Pathogenic bacteria

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Study on the meso-scale process of the Kuroshio front to the east of Taiwan

Marine Science Bulletin (2011)

Han Gui-jun

By using the reanalysis data,the impact of oceanic eddies and frontal wave on Kuroshio front to the east of Taiwan(KFETW) is studied.The result indicates that cold eddies(warm eddies) corresponding to the first baroclinic mode of Rossby wave can weaken(strengthen) the strength of the KFETW and narrow(widen) the width of this front.A frontal wave of the KFETW during January to February in 1991 is detected from the reanalysis data.And the trough(crest) of the frontal wave may weaken(strengthen) the strength of the KFETW and narrow(widen) the width and thickness of this front.Diagnostic equation of frontal wave disturbance energy corresponding to linear basic state is extended and diagnostic equation corresponding to non-linear basic state is derived.It is found through the diagnostic analysis of the energy source of the frontal wave that the contribution of barotropic instability or that of baroclinic instability is more than that of K-H instability by 1~2 order of magnitude,and the contribution of the baroclinic instability is 4 times bigger than that of the barotropic instability,thereby the frontal wave is basically driven by the baroclinic instability.

Barotropic fluid

Eddy

Trough (economics)

Stratification (seeds)

Frontogenesis

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The effect of the vertical mixing parameterization on modeling the summer structure of temperature in the Yellow Sea

Haiyang xuebao (2014)

Xue‐Feng Zhang Han Gui-jun Dongxiao Wang Wei Li Kexiu Liu

Vertical mixing