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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{2., state oceanic administration, qingdao 2.6061, china key laboratory of Marine Science and numerical modeling, state oceanic administration, qingdao 2.6061, china 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{2., state oceanic administration, qingdao 2.6061, china key laboratory of Marine Science and numerical modeling, state oceanic administration, qingdao 2.6061, china 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 {2. modeling,The first institute of oceanography,state oceanic administration,qingdao 2.6061,china key laboratory of Marine Sciences and {2. 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 1949-2.03 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

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 {2. State Oceanic Administration Qingdao 266061 China key laboratory of Marine Science and {2. 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 17-2. μg/L and 300-375 μg/L respectively,the water is in a {2. of *** phosphate and silicate up to 2.-32.μg/L and 350-500 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 17-2. μg/L and 300 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

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{2.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

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{2.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/3D-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

A detection model of underwater topography with a series of SAR images acquired at different time

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Acta Oceanologica Sinica 2010年第4期29卷 28-37页

作者： YANG Jungang ZHANG Jie MENG Junmin The first institute of oceanography State Oceanic Administration Qingdao 266061 China key laboratory of Marine Science and {2. modeling （MASNUM） State Oceanic Administration Qingdao 266061 China

underwater topography is one of oceanic features detected by Synthetic Aperture *** topography SAR imaging mechanism shows that tidal current is the important factor for underwater topography SAR *** under the same wind field condition,SAR images for the same area acquired at different time include different information of the underwater *** utilize synchronously SAR images acquired at different time for the underwater topography SAR detection and improve the precision of detection,based on the detection model of underwater topography with single SAR image and the periodicity of tidal current,a detection model of underwater topography with a series of SAR images acquired at different time is developed by combing with tide and tidal current numerical *** testify the feasibility of the presented model,Taiwan Shoal located at the south outlet of Taiwan Strait is selected as study area and three SAR images are used in the underwater topography *** detection results are compared with the field observation data of water depth carried out by R/V {2.fanghong 2.and the errors of the detection are compared with those of the single SAR *** comparisons show that the detection model presented in the paper improves the precision of underwater topography SAR detection,and the presented model is feasible.

关键词： underwater topography SAR image Taiwan Shoal tide and tidal current

Eigen solutions of internal waves over subcritical topography

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Acta Oceanologica Sinica 2011年第2期30卷 1-8页

作者： DAI Dejun WANG wei ZHANG Qinghua QIAO Fangli yuAN Yeli The first institute of oceanography State Oceanic Administration Qingdao 266061 China key laboratory of Marine Science and {2. modeling State Oceanic AdministrationQingdao 266061 China Physical oceanography laboratory Ocean University of China Qingdao 266003 ChinaP~eceived 13 June 2010 accepted 2.December 2.10

Diapycnal mixing plays an important role in the ocean *** waves are a kind of bridge relating the diapycnal mixing to external sources of mechanical *** in obtaining eigen solutions of internal waves over curved topography is a limitation for further theoretical study on the generation problem and scattering *** this study,a kind of transform method is put forward to derive the eigen solutions of internal waves over subcritical topography in twodimensional and linear *** transform converts the curved topography in physical space to flat bottom in transform space while the governing equation of internal waves is still hyperbolic if proper transform function is ***,one can obtain eigen solutions of internal waves in the transform *** examples of transform functions,which convert the linear slope,the convex slope,and the concave slope to flat bottom,and the corresponding eigen solutions are illustrated.A method,using a polynomial to approximate the transform function and least squares method to estimate the undetermined coefficients in the polynomial,is introduced to calculate the approximate expression of the transform function for the given subcritical topography.

关键词： internal waves transform method eigen solutions subcritical curved topography

Spatial teleconnection pattern between Indian Ocean Dipole and the southern high-latitude sea level pressure field

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Progress in Natural Science:Materials International 2005年第12期15卷 1143-1147页

作者： LIU Na,CHEN Hongxia,MIN Jinzhong,HUA Feng and BIAN Hongcun Jiangsu key laboratory of Meteorological Disaster,Nanjing University of Information Science & Technology,Nanjing 2.0044,{2. key laboratory of Marine Science and numerical modeling,state oceanic administration,qingdao 2.6061,{2. first institute of oceanography,qingdao 2.6061,{2. Jiangsu key laboratory of Meteorological Disaster Nanjing University of Information Science & Technology Nanjing 210044 China. key laboratory of Marine Science and {2. modeling State Oceanic Administration Qingdao 266061 China. first institute of {2. Qingdao 266061 China

Sea level pressure (SLP) anomalies over the southern high latitudes associated with the Indian Ocean Dipole Mode (IOD) are *** correlation and composite analysis depict,for the first time,the seasonal spatial variability in the relationship of SLP field in Southern Ocean with *** suggest that the IOD signal exists in the southern high latitudes and it is enhanced in boreal autumn,an active season of *** interannual to subdecadal timescales,the spatial teleconnection pattern exhibits a wavenum-ber-3 pattern around the circumpolar Southern Ocean and the lead-lag correlation analysis shows that there are about 3 months of SLP anomalies in southern high latitudes lagging IOD,which indicates that the response time is almost instantaneous.

关键词： IOD SLP teleconnection southern high latitudes