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Improvement of the SLP simulation in the coupled AGCM-ocean surface wave model

chinese Science Bulletin 2005年第20期50卷 2397-2400页

作者： yu weidong1, 2, 3, li zhaoxin4.& yuan yeli3 1. institute of oceanology, chinese academy of sciences, qingdao 266071, china 2. Graduate School of chinese academy of sciences, Beijing 100049, china 3. Laboratory of Marine Science and Numerical Modeling, First institute of Oceanography, State Oceanic Administration, qingdao 266061, china 4. LMD/CNRS, Univ. Paris 6, Paris, France institute of {1. Chinese Academy of Sciences Qingdao 266071 China Graduate School of chinese academy of sciences Beijing 100049 China Laboratory of Marine Science and Numerical Modeling First Institute of Oceanography State Oceanic Administration Qingdao 266061 China LMD/CNRS Univ. Paris 6 Paris France

The coupled atmosphere-ocean general circulation models (CGCM) are nowbecoming the indispensable tools for the climate study. However, most models still suffer fromunrealistic simulations. One problem is the troublesome climate drift. It may come from someunresolved aspects. One possibility is the poor air-sea surface flux description now adopted inCGCM. The commonly used solution for this problem is the so-called flux correction. To deal with it,Hasslemann proposed an alternative solution of prospect. That is to incorporate the ocean surfacewave model into this coupled GCM system so as to establish a coupled atmosphere-wave-ocean *** necessity is clearly seen from the recent field experiment that air-sea momentum flux dependsstrongly on the sea state. So the explicit calculation of the air-sea flux with the aid of the oceansurface wave model is highly desired. Theoretical progress has provided feasibility to such ideaand experiments have been conducted. Recent work also reveals that coupling ocean surface wave modelwith oceanic general circulation model can result in much better reproduction of the upper oceanthermal structure. This further strengthens our belief in the final realization of the coupledatmosphere-wave-ocean modeling system.

关键词：大气海洋循环模式气象学 SLP模拟

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Representation of microscale ocean wavenumber spectrum correct to the second order

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Science china Earth {1. 2005年第4期48卷 549-554页

作者： yuan {1.2 & HUA Feng1.2,3 1. institute of oceanology, chinese academy of sciences, qingdao 266071, china 2. Key Laboratory of Marine Science and Numerical Modeling, State Oceanic Administration, qingdao 266061. china 3. Graduate School of the chinese academy of sciences, Beijing 1.0039, china 1. Key Laboratory of Marine Science and Numerical Modeling State Oceanic Administration 266061 Qingdao China 2. institute of {1. Chinese Academy of Sciences 266071 Qingdao China 3. Graduate School of the chinese academy of sciences 100039 Beijing China

In this paper, the analytical representations of four wave source functions in high-frequency spectrum range are given on the basis of ocean wave theory and dimensional analysis, and the perturbation method is used to solve the governing equations of ocean wave high-frequency spectrum on the basis of the temporally stationary and locally homogeneous scale relations of microscale wave. The microscale ocean wavenumber spectrum correct to the second order has an explicit structure, its first order part represents the equilibrium between dif- ferent source functions, and its second order part represents the contribution of microscale wave propagation.

关键词： temporally stationary and locally homogeneous, source function in high-frequency spectrum range, microscale ocean wavenumber spectrum.

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An improved method for evaluating the seasonal variability of total suspended sediment flux field in the Yellow and East{1. Seas

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International Journal of Sediment Research 2011年第1期26卷 1-14页

作者： PANG Chongguang~1,yu Wei~2,YANG Yang~3,and HAN Danxiu~4 institute of oceanology,chinese academy of sciences,qingdao 266071,china, 2 institute of oceanology,chinese academy of sciences,qingdao 266071,china,Graduate School of chinese academy of sciences,Beijing 100039,china 3 institute of oceanology,chinese academy of sciences,qingdao 266071,china,Graduate School of chinese academy of sciences,Beijing 100039,china 4 china University of Petroleum,Beijing 102249,china [a] Doctor Researcher institute of {1. chinese {1. of sciences qingdao {1. china [b] {1. of oceanology chinese {1. of sciences qingdao {1. china Graduate School of chinese academy of sciences Beijing 1.0039 china [c] {1. of oceanology chinese {1. of sciences qingdao {1. china Graduate School of chinese academy of sciences Beijing 1.0039 china [d]{1. University of Petroleum Beijing 1.2249 china

The suspended sediment flux field in the Yellow and East china Seas(YECS) displays its seasonal variabi{1.ty.A new method is introduced in this paper to obtain the flux field via retrieval of ocean color remote sensing data,statistical analysis of historical suspended sediment concentration data,and numerical simulation of three-dimensional(3D) flow *** components of the sediment flux field include(i) surface suspended sediment concentration inverted from ocean color remote sensing data;(ii) vertical distribution of suspended sediment concentration obtained by statistical analysis of historical observation data;and(iii) 3D flow field modeled by a numerical *** the improved method,the 3D suspended sediment flux field in the YECS has been *** comparison with the suspended sediment flux field solely based on the numerical simulation of a suspended sediment transport model,the suspended sediment flux field obtained by the improved method is found to be more *** 3D suspended sediment flux field from ocean colour remote sensing and in situ observation are more closer to the ***,by quantitatively analyzing the newly obtained suspended sediment flux field,the quantity of sediment erosion and deposition within the different regions can be *** sediment exchange between the Yellow Sea and the East china Sea can be *** mechanism of suspended sediment transport in the YECS can be better *** particular,it is suggested that the long-term transport of suspended sediment is controlled mainly by the circulation pattern,especially the current in winter.

关键词： Suspended sediment flux field Seasonal variability Yellow and East china Seas Regression equation Numerical simulation

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Comparative analysis of astaxanthin and its esters in the mutant E1.of Haematococcus pluvialis and other green algae by HPLC with a C30 column

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Science china({1.fe sciences) 2008年第12期51卷 1108-1115页

作者： PENG Juan1, XIANG WenZhou2,1, TANG QuanMing1, SUN Ni1, CHEN Feng1,3 & yuan JianPing 4 1 South china Sea institute of oceanology, chinese academy of sciences, Guangzhou 510301, china 2 institute of oceanology, chinese academy of sciences, qingdao 266071, china 3 School of Biological sciences, The University of Hong Kong, Hong Kong, china 4 institute of oceanology & College of life sciences, Sun Yat-Sen University, Guangzhou 510301, china South china Sea {1. of oceanology Chinese Academy of Sciences Guangzhou 510301 China institute of {1. Chinese Academy of Sciences Qingdao 266071 China School of Biological sciences The University of Hong Kong Hong Kong China institute of {1. & College of life sciences Sun Yat-Sen University Guangzhou 510301 China

A gradient reversed-phase high-performance liquid chromatography (HPLC) method using a C30 col-umn was developed for the simultaneous determination of astaxanthin, astaxanthin monoesters and astaxanthin diesters in the green algae Chlorococcum sp., Chlorella zofingiensis, Haematococcus plu-vialis and the mutant E1. which was obtained from the mutagenesis of H. pluvialis by exposure to UV-irradiation and ethyl methanesulphonate (EMS) with subsequent screening using nicotine. The re-sults showed that the contents of total astaxanthins including free astaxanthin and astaxanthin esters ranged from 1.4 to 30.9 mg/g dry biomass in these green algae. The lower total astaxanthin levels ( 2 mg/g dry biomass) were detected in the green algae Chlorococcum sp. and C. zofingiensis. The higher total astaxanthin levels (>1. mg/g dry biomass) were found in the green alga H. pluvialis and its mutant E1. It is notable that the mutant E1.is found to have considerably higher amounts of total astaxanthin (30.9 mg/g) as compared to the wild strain of H. pluvialis (1..1.mg/g). This indicates that UV-irradiation and EMS compound mutagenesis with subsequent screening using nicotine is an effective method for breeding of a high-producing astaxanthin strain of H. pluvialis. In addition, the green alga C. zofingien-sis had a remarkably higher percentage of astaxanthin diesters (76.3% of total astaxanthins) and a re-markably lower percentage of astaxanthin monoesters (1..0% of total astaxanthins) in comparison with H. pluvialis (35.5% for diesters and 60.9% for monoesters), the mutant E1.(49.1. and 48.1.) and Chlorococcum sp. (1..0% and 58.6%).

关键词： green algae Haematococcus pluvialis mutant astaxanthin HPLC C30 column

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Studies on the regional feature of organic carbon in sediments off the Huanghe River Estuary waters

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Acta Oceanologica Sinica 2004年第1期23卷 129-134页

作者： yuan Huamao1, 2, liU Zhigang3, SONG Jinming1, L Xiaoxia1, 2 li Xuegang1, 2, li Ning1, 2, ZHAN Tianrong1, 21. MEES, institute of oceanology, chinese academy of sciences, qingdao 266071, china2. Graduate School of the chinese academy of sciences, Beijing 100039, china3. Zhoushan Marine Eco-environmental Monitoring Station of Zhejiang Province, Zhoushan 316004, china chinese Acad Sci Inst Oceanol MEES Qingdao 266071 Peoples R China chinese Acad Sci Grad Sch Beijing 100039 Peoples R China Zhoushan Marine Ecoenvironm Monitoring Stn Zhoushan 316004 Peoples R China

Organic carbon (OC) in definitely small area sediments(according to marine dimension)off the Huanghe River Estuary is investigated in order to evaluate the feature of regional difference of physical and chemical properties in marginal sea *** distributions of OC in sediments with natural grain size and the relationship with the pH,Eh ,Es and Fe3+/Fe2+ are *** addition,OC decomposition rates in surfacial/subsurfacial sediments are *** concentrations range from 0.26% to 1.8%(wt)in the study area. Significant differences in OC content and in horizontal distribution as well as various trends in surfacial /subsurfacial sediments exhibit the feature of regional difference remarkably in marginal sea sediments. The complicated distribution of OC in surface sediments is due to the influence of bacterial activity and abundance, bioturbation of benthos and physical disturbance. The OC decomposition rate constant in surfacial /subsurfacial sediments ranges from 0.009 7 to 0.076 a-1.and the relatively high values may be mainly related to bacteria that are mainly responsible for OC mineralization;meio-and macrofauna affect OC degradation both directly, through feeding on it, and indirectly through bioturbation and at the same time coarse sediments are also disadvantageous to OC *** almost all the middle and bottom sediments the contents of OC decrease with the increase of deposition depth, which indicates that mineralization of OC in the middle and bottom sediments has occurred via processes like SO reduction and Fe-oxide reduction.

关键词： regional feature organic carbon sediments Huanghe River Estuary

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STUDY OF IMPACT OF ESTABliSHMENT OF A DAM ON LOCAL TIDAL CURRENTS IN KENDONG OIL FIELD

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Journal of Hydrodynamics 2004年第3期16卷 356-365页

作者： liUHao YINBao-shu {1.Ke-jun YANGDe-zhou XUYan-qing instituteof{1. ChineseAcademyofSciencesQingdao266071China instituteof{1..chineseacademyofsciences Qingdao266071China

In this paper a three-dimensional tidal current model has been used toexamine variations of local fluid field due to establishment of a dam. By imputing ten tides-K_1.O_1. P_1., Q_1. M_2, S_2, N_2, K_2 , S_a and S_(sa) through the open boundary of the Bohai straitand adopting 5′ x 5′ horizontal resolution the whole fluid field of the Bohai Sea was firstsimulated. The computed harmonic constants of m_1.and M_2 tides at seventeen observational stationsalong the coast of the Bohai Sea matched the observed values rather well. Taking the calculatednumerical results as open boundary conditions, the local fluid field in the Kendong Oil Field bymeans of 1. x 1. horizontal resolution was then investigated. In the course of calculation, finegrids were embedded in coarse grids so as to enhance the computational order. In addition, thelatest water-depth data of the Huanghe Delta coast area were adopted, thus topographic changesbecause of silt sediment in that region wouldn''t affect the computed results. In the end, byanalyzing the relative changes of the fluid field before and after the dam was established, that theeffect on the dynamic environment of the local sea area mainly concentrated on the adjacentpositions north and south of the dam was suggested.

关键词： tidal current harmonic constants open boundary frequency analysis

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Spatial and temporal variations in pH and total alkalinity at the beginning of the rainy season in the Changjiang Estuary,{1.

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Acta Oceanologica Sinica 2005年第5期 72-81页

作者： GAO Xuelu1, 2, 3, SONG Jinming1*, li Xuegang1, yuan Huamao1, li Ning1, 31. institute of oceanology, chinese academy of sciences, qingdao 266071, china2. South china Sea institute of oceanology, chinese academy of sciences, Guangzhou 510301, china3. Graduate School of chinese academy of sciences, Beijing 100039, china

The results of field observation carried out in May 2003 were used to examine pH and total alka{1.nity behaviors in the Changjiang Estuary. It was showed that pH and total alka{1.nity took on clear spatial variations in values with the minima in the low sa{1.nity region. {1.ke sa{1.nity, transect distributions of pH and total alka{1.nity (TA) in a downriver direction had a sharp gradient each. These gradients appeared in such a sequence that the TA gradient was ear{1.er than sa{1.nity and pH gradients, and the sa{1.nity gradient was ear{1.er than the pH gradient. These distribution characteristics seemed to be strongly influenced by the mixing process of freshwater and seawater, for both pH and total alka{1.nity had significant {1.near relationships with sa{1.nity and temperature. For pH, phytoplankton activities also had a significant impact upon its spatial distribution. During a period of 48 h, pH and total alka{1.nity changed within wide ranges for every layer of the two anchor stations, namely, Stas 1. and 20, which were located at the mixed water mass and seawater mass, respectively. For both Stas 1. and 20, pH and TA fluctuation of every layer could be very wide during a 4 h period. As a whole, the data of the two anchor stations showed that neither variations in sa{1.nity and temperature nor phytoplankton activities were the main factors strongly influencing the total alka{1.nity temporal variabi{1.ty on a small time scale. The data of Sta. 20 imp{1.ed that both sa{1.nity variation and phytoplankton activities had a significant influence on pH temporal variabi{1.ty, but the same conclusion could not be drawn from the data of Sta. 1..

关键词： Changjiang Estuary pH total alkalinity spatial and temporal variations

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Geochemistry and environment evolution of Core E in the Laizhou Bay since last stage of Middle Pleistocene

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Acta Oceanologica Sinica 2001年第3期20卷 391-399页

作者： Han Deliang, yu Hongjun, li Guanbao 1. Ocean University of qingdao, qingdao 266003, china 2. First institute of Oceanography, State Oceanic Administration, qingdao 266061, china 3. institute of oceanology. chinese academy of sciences. qingdao 266 Ocean University of qingdao Qingdao 266003 China First institute of Oceanography State Oceanic Administration Qingdao 266061 China institute of {1. Chinese Academy of Sciences Qingdao 266071 China

Geochemistry analysis has been done on Core E (37 07' N, 1.8 55' E; depth: 82.1.m) taken from the Laizhou Bay in 1.94. Nine kinds of invariable elements, 1. kinds of microelements and the content of lime carbonate are measured by means of ICP. The results indicate that most of the invariable elements and microelements in Core E show significant changes in the boundary stratotype, and the ratios between elements (Mn/Fe, Sr/Ba, Ti/Al) in particular. So they can be used as characteristic indicator to stratigraphic division of Quaternary. The changes of invariable elements are primarily controlled by the host minerals, and they mainly indicate the provenance as well as the sedimentation and depositional environment. Several elements, such as Fe, Al, Ca, Mg, Mn and Ti, are very sensitive to the provenance and environment. The distribution of microelements differs in four depositional periods: last stage of Middle Pleistocene, last interglacial period, last glacial period and Recent epoch, and especially in the 'cold period' and 'warm period'. The loops in the cycle curves of the most microelements correspond with the sand bed sediments, among which there are six sand units representing 'warm period' sediments, and one representing 'cold period' sediments. The carbonate is on the high side in the aeolian silt sediments formed in the glacial lowering of sea level in Core E, but on the low side in the transgressive sand beds formed in the interglacial period. The content variation of carbonate has a direct bearing on the grain size and the styles of sediments, and is a good indicator to the climate, environment and stratigraphic division.

关键词： Laizhou Bay last stage of Middle Pleistocene geochemistry paleo-environment element strata

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The color reflectance of marine-terrigenous deposits in LZ908 borehole in south coastal plain of the Laizhou Bay

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Acta Oceanologica Sinica 2011年第4期30卷 53-59页

作者： ZHAO Na XU Xingyong yu Hongjun YAO Jing SU Qiao PENG Shuzhen Yantai institute of Coastal Zone Research Chinese Academy of Sciences Yantai 264003 China Graduate University of chinese academy of sciences Beijing 100049 China the First institute of Oceanography State Oceanic Administration People＇s Republic of China Qingdao 266061 China Taishan University Taian 271021 China

Color measuring is characterized by high resolution,high efficiency,and low cost. The application becomes increasingly common for tracing sediment sources and climate variation. Borehole LZ908 in the south coastal plain of the Laizhou Bay in northeast china,was used,of which the top 54 m containing all marine facies was focused,to test the feasibility of colorimetry as a climate indi-cator using visible light reflectance spectra and L＊a＊b＊measurement results. The results show a good correction between lightness and calcium carbonate content in marine-terrigenous deposits;therefore,these deposits can be used as a proxy to study climate changes. Factor-analysis on the first derivative values of the raw visible light reflectance spectra produced three principal factors corresponding to goethite,organic matter,and hematite. Down hole variations in the three fac-tor scores,lightness,calcium carbonate content,and grain size were quite consistent. Moreover,high lightness and low factor scores in goethite,hematite,and organics indicated glacial regression deposits,while low lightness and high factor scores in goethite,hematite,and organics indicated interglacial transgression deposits.

关键词： coastal plain the Laizhou Bay visible light reflectance factor analysis L*a*b* lightness

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Detecting forest landscape boundary between Mountain Birch and evergreen coniferous forest in the northern slope of Changbai Mountain

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Journal of Environmental sciences 2003年第2期15卷 182-186页

作者： CHANG yu+1. BU Ren-cang+1. HU {1.-man+1. XU Chong- gang+1. WANG Qing-li+2 (1. institute of Applied Ecology, chinese academy of sciences, Shenyang 1.001., china. 2. Shenyang Branch, CAS) institute of App{1.ed Ecology Chinese Academy of Sciences Shenyang 110016 China Shenyang Branch CAS Shenyang China

Boundaries between different forest types in Changbai Mountain Eastern china are results from complex interactions between forest ecosystems, topography, and geomorphology. Detecting and quantifying the transitional zones are highly important since high environmental heterogeneity and biodiversity are often found within these zones. In this study, we used GIS and multivariate statistics techniques(PCA and MSWA) to analyze data from Landsat TM satel{1.te imageries and quantitatively determined the positions and widths of the landscape boundary between mountain birch and evergreen coniferous forests in the northern slope of Changbai Mountain. The results showed that the widths of the landscape boundary ranges from 30—50m while using the MSWA or/and PC method. Such detected widths are consistent with field transect data that suggests a 50m transitional zone width. The results further suggest that TM data can be used in combination with GIS and statistical techniques in determining forest landscape boundaries; MSWA is more re{1.able than PCA, while PCA can also be used to determine the landscape boundary when transects are properly located.

关键词： Changbai Mountain forest landscape boundary PCA & MSWA

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