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AN EXTENDED modeling OF TIDE-WAVE MOTION

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Journal of Hydrodynamics 2001年第3期13卷 100-106页

作者： Zhang Qing hua, Xu Hao, Qu Yuan yuan first institute of oceanography, state oceanic administration, qingdao 2.6061,{3. Key laboratory of marine science and numerical modeling, state oceanic administration, qingdao 2.6061,{3. first Inst. of oceanography State Oceanic Administration Qingdao 266061 China

By vertical boundary conditions, a spectral expansion of horizontal tide wave velocity is done in vertical direction in terms of a complete basis functions selected properly, hence a relation between tide levels and spectral components is found theoretically under condition of ignoring the horizontal friction stress and nonlinear effect. And a relation between bottom friction of tide current, which satisfies the viscous condition on sea bottom, and tide levels is determined. The relation is different from the relation of the traditional parameterizing of bottom friction. Moreover integration of the continuity equation and momentum equations is carried out in the vertical direction using zero flux condition on solid boundaries and inputting condition on open boundaries, and then a boundary value problem of elliptic form on the tide levels is constructed.

关键词： tide waves basis function spectral expansion bottom friction

THE RE-DERIVATION OF THE VORTICITY EQUATION OF THE LAYERED FLOW OF THE SHALLOW SEA

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Journal of Hydrodynamics 2001年第3期13卷 10-16页

作者： Zhang Qing-hua, Li Jian ke, Qu Yuan yuan first institute of oceanography, state oceanic administration, qingdao 2.6061,{3. Key laboratory of marine science and numerical modeling, state oceanic administration, qingdao 2.6061,{3. first Inst. of oceanography State Oceanic Administration Qingdao 266061 China

The scale analysis of the layered flow problem of the shallow sea shows that the parameter of E V represented the relative thickness of the friction layer is the little value larger than Rossby number. This illustrates that they are not ignorable and the important control factors of the layered flow although friction effect is only limited within interface Ekman layer and bottom Ekman layer. Using larger little parameter E V as the little perturbation parameter is more reasonable than using the classical Rossby number ε. By using the perturbation expansion and doing the researches of the structure of the Ekman layer on the sea surface, sea bottom and interface, a group of new layered flow vorticity equation is derived. It combines the vorticity of the flow of every layer, the inclination of the interface, the inclination of the sea bottom and the wind stress vorticity on the sea surface. Different from the conventional vorticity equation, which derived by using Rossby number as little parameter and is applied to large scale motion, it allows relatively large interfaces fluctuation, even it is applied to the problem that interface touch the bottom or touch the sea surface.

关键词： interface Ekman layer interface fluctuation touch the bottom touch the sea surface

The relationship between sea surface temperature anomaly and wind energy input in the Pacific Ocean

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Progress in Natural science:Materials International 2009年第10期19卷 1409-1412页

作者： Chuanjiang Huang,Fangli Qiao Key laboratory of marine sciences and {3. modeling,The first institute of oceanography,state oceanic administration,qingdao 2.6061,china [a]Key laboratory of marine sciences and {3. modeling The First Institute of Oceanography State Oceanic Administration Qingdao 266061 China

The relationship between sea surface temperature anomaly(SSTA) and wind energy input in the Pacific Ocean over the period of 1949-2003.is studied by using daily-mean NOAA/NCEP wind stress and monthly mean Reynolds SST *** results indicate the strong negative correlation between SSTA and local wind energy input to surface waves in most of the domain at low and middle *** SST is low(high) during the years with more(less) wind energy *** correlation coefficients are high in the central and eastern tropical Pacific and the central midlatitude North Pacific at the decadal scale,and in the central tropical Pacific at the interannual *** mixing processes in the upper ocean are closely associated with wind energy input,indicating that wind energy input may play an important role in interannual and decadal variability in the Pacific Ocean via regulating vertical mixing.

关键词： Wind energy Interannual and decadal variability SSTA Vertical mixing

EI NIO PHENOMENON AND EXTENDED ASSOCIATE PATTERN ANALYSIS

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Journal of Hydrodynamics 2004年第1期16卷 90-100页

作者： CUIMao-chang MOJun QIAOFang-li instituteofOceanology ChineseAcademyofSciences.Qingdao266071China／KeyLaboratoryofMarineScienceandNumericalmodelingTheFirstInstituteofOceanographyStateOceanicAdministrationQingdao266061China. instituteofOceanology ChineseAcademyofSciences.Qingdao266071China Keylaboratoryofmarinescienceand{3.modeling TheFirstInstituteofOceanographyStateOceanicAdministrationQingdao266061China

To study the causes of El Nino Phenomenon the Extended Associate PatternAnalysis (EAPA) is set up with monthly sea surface wind stress and precipitation besides Sea LevelPressure (SLP) and Sea Surface Temperature (SST) in or over the Pacific and related seas since 1979in present paper. The results show that El Nino Phenomenon means a SST redistribution, coveringalmost the whole Pacific that needs a huge amount of energy provided by air-sea interaction in themost Pacific regions; It is the wester burst and wind convergence, coming from meddle latitudesdirectly, instead of Kelvin waves that produce the strong SST warm signal in Nino regions; Twonegative SLP anomalies in middle of the North and South Pacific, most likely produced by the averageair pressure decreasing effect of explosive cyclones through precipitation, and the positive SLPanomaly o-ver the Asia-Australia land bridge, coming mainly from the south hemisphere with a littleinfluence from the Asian continent, are the three major causes for El Nino onset, they work togetherto produce anomalous wind convergence in Nino regions and wester burst in middle of the North andSouth Pacific that result in a warm tongue and cold pincers gearing together; Basically, during itsearly stage the ocean is forced by the atmosphere, while during its late stage the atmosphere isforced by the ocean.

关键词： extended associate pattern analysis (EAPA) El nino phenomenon

numerical experiments of HAB inducement in qingdao adjacent coastal area

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Acta Oceanologica Sinica 2010年第5期29卷 109-120页

作者： LIU Xuehai LI Ruixiang YUAN Yeli College of Physical and Environmental oceanography Ocean University of China Qingdao 266100 China first institute of oceanography State Oceanic Administration Qingdao 266061 China Key laboratory of marine science and {3. modeling State Oceanic Administration First Institute of Oceanography State Oceanic Administration Qingdao 266061 China

A three-dimension ecological dynamic model was established to numerically study the relationship of HAB and environmental *** numerical experiments showed that the growth of diatom,the dominant HAB specie,was mainly restricted by phosphate and *** the concentrations of phosphate and silicate reach 17-25 μg/L and 3.0-3.5 μg/L respectively,the water is in a state of *** phosphate and silicate up to 26-3. μg/L and 3.0-500 μg/L respectively,HAB could be *** major regions of HAB occurrence are Jiaozhou Bay mouth,coastal bays,and coastal area from Maidao to *** avoid HAB occurrence,concentration of phosphate and silicate should not exceed 17-20 μg/L and 3.0 μg/L as a *** control of pollutant discharge is a key point to prevent water eutrophication and HAB occurrence.

关键词： HAB numerical model marine ecosystem dynamics environmental condition

UNIFICATION AND APPLICATIONS OF MODERN oceanic/ATMOSPHERIC DATA ASSIMILATION ALGORITHMS

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Journal of Hydrodynamics 2004年第5期16卷 501-517页

作者： QIAOFang-li ZHANGShao-qing YUANYe-li instituteofoceanography ChineseAcademyofSciencesQingdao266071China GeophysicalFluidDynamicslaboratory PrincetonUniversityPrincetonNJ08542USA Keylaboratoryofmarinescienceand{3.modeling TheFirstInstituteofOceanographyStateOceanicAdministrationQingdao266061China

The key mathematics and applications of various modern atmospheric/oceanicdata assimilation methods including Optimal Interpolation (OI), 4-dimensional variational approach(4D-Var) and filters were systematically reviewed and classified. Based on the data assimilationphilosophy, i. e. , using model dynamics to extract the observational information, the commoncharacter of the problem, such as the probabilistic nature of the evolution of theatmospheric/oceanic system, noisy and irregularly spaced observations, and the advantages anddisadvantages of these data assimilation algorithms, were discussed. In the filtering framework, allmodern data assimilation algorithms were unified: OI/3.-Var is a stationary filter, 4D-Var is alinear (Kalman) filter and an ensemble of Kalman filters is able to construct a nonlinear *** nonlinear filter such as the Ensemble Kalman Filter (EN-KF), Ensemble Adjustment Kalman Filter(EAKF) and Ensemble Transformation Kalman Filter (ETKF) can, to some extent, account for thenon-Gaussian information of the prior distribution from the model. The flow-dependent covarianceestimated by an ensemble filter may be introduced to OI and 4D-Var to improve these traditionalalgorithms. In practice, the performance of algorithms may depend on the specific numerical modeland the choice of algorithm may depend on the specific problem. However, the unification ofalgorithms allows us to establish a unified test system to evaluate these algorithms, which providesmore insights into data assimilation philosophies and helps improve data assimilation techniques.

关键词： data assimilation oceanic/atmospheric system filtering optimalinterpolation (OI) 4-dimensional variational(4D-Var) approach

SIMULATION STUDY OF IMAGING OF UNDERWATER BOTTOM TOPOGRAPHY BY SYNTHETIC APERTURE RADAR

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Journal of Hydrodynamics 2001年第3期13卷 57-64页

作者： Ma, Yi Zhang, Jie first Inst. of oceanography State Oceanic Administration Qingdao 266061 China

Interaction between current and underwater bottom topography modulates roughness of the sea surface, which in turn yields variation of the radar scattering echo. By using the mechanism, this paper presents a simulation model for Synthetic Aperture Radar (SAR) imaging of underwater bottom topography. The numerical simulations experiments were made using the Princeton Ocean Model (POM) and analytical expression theory of SAR Image in Mischief sea area. It is concluded that the SAR image is better visual when water depth of underwater bottom topography is shallow or gradient of underwater bottom topography is high.

关键词： numerical analysis Ocean currents Simulation Synthetic aperture radar Underwater imaging Underwater structures

THE SIMULATION OF THE SAR IMAGE OF INTERNAL SOLITARY WAVES IN ALBORAN SEA

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Journal of Hydrodynamics 2001年第3期13卷 88-92页

作者： Meng Jun min Ocean University of qingdao, qingdao 266003. china Zhang Zi li, Zhao Jun sheng{3., state oceanic administration, qingdao 2.6061, china Zhang Jie Key laboratory of marine science and numerical Modelling, Ocean Univ. of qingdao Qingdao 266003 China

SAR imaging mechanism of internal wave is studied. The numerical modelling of internal waves is obtained by the two level scheme. The simulaed SAR images that have better expressed the features of internal waves are ... 详细信息

关键词： internal wave soliton SAR simulation

The coupling instability of Rossby and topographic Rossby waves in the equatorial area

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science china Earth sciences 2005年第10期48卷 1792-1801页

作者： CHAO Jiping1,2, LIU Lin1,3.& YU Weidong1 1. laboratory of marine science and {3. modeling, state oceanic administration, qingdao 2.6061, china 2. National Research Center for marine Environmental Forecasts, state oceanic administration, Beijing 100081, china 3. Ocean University of china, qingdao 266003. china laboratory of marine science and {3. modeling state oceanic administration qingdao china National Research Center for marine Environmental Forecasts state oceanic administration Beijing china Ocean University of china qingdao china

In case of considering the fact that the tropical ocean thermocline or the lower at-mosphere height field has the meridional variation, the topographic Rossby wave will be excited. Also the background geostrophic current emerges. Under such conditions, the topographic Rossby wave can interact with the classical Rossby wave at some parameter band and thus brings a new kind of instability, which may be of potential application in understanding some phenomena of the ENSO cycle.

关键词： thermocline variation, equatorial jet, Rossby wave, topographic Rossby wave, coupling instability