搜索结果: 1-15 共查到“海洋物理学 Ocean Models”相关记录32条 . 查询时间(0.077 秒)
Measures of the Fidelity of Eddying Ocean Models
Eddying Ocean Models Measures
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2015/7/23
Computational simulation is now an essential methodology of science, along with theory and observation. The ability of scientists to understand and predict planetary climate variability largely depend...
Comparison of extended and ensemble based Kalman filters with low and high resolution primitive equation ocean models
Kalman filters low and high resolution primitive equation ocean models
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2009/11/11
Kalman filters are widely used for data assimilation into ocean models. The aim of this study is to discuss the relevance of these filters with high resolution ocean models. This was investigated thro...
Statistical characteristics of irreversible predictability time in regional ocean models
Statistical characteristics irreversible predictability time regional ocean models
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2009/11/9
Probabilistic aspects of regional ocean model predictability is analyzed using the probability density function (PDF) of the irreversible predictability time (IPT) (called τ-PDF) computed from an unco...
Efficient estimation of time-mean states of ocean models using 4D-Var and implicit time-stepping
Efficient estimation time-mean states ocean models 4D-Var implicit time-stepping
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2009/11/3
We propose an efficient method for estimating a time-mean state of an ocean model subject to given observations using implicit time-stepping. The new method uses (i) an implicit implementation of the ...
On stochastic stability of regional ocean models with uncertainty in wind forcing
stochastic stability regional ocean models uncertainty in wind forcing
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2009/11/3
A shallow-water model was used to understand model error induced by non-Gaussian wind uncertainty. Although the model was simple, it described a generic system with many degrees of freedom randomized ...
Assimilation of Altimeter Data into Ocean Models
Altimeter Data Ocean Models
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2009/1/13
The problem of assimilating satellite altimeter data into an ocean model is considered for the case in which the ocean currents are weak, so that they can be represented by a superposition of linear R...
Solution of Nonlinear Finite Difference Ocean Models by Optimization Methods with Sensitivity and Observational Strategy Analysis
Nonlinear Finite Difference Ocean Models Optimization Methods
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2009/1/13
Dynamical models driven by “observed” forcing fields (e.g., the wind) have a true solution uncertainty owing to observational errors in the driving. This uncertainty is usually hidden from view becaus...
The Effect of Salinity on Tropical Ocean Models
Effect of Salinity Tropical Ocean Models
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2009/1/5
The effect of horizontal salinity gradients on the tropical ocean circulation has not previously been evaluated. It is shown that there are noticeable differences between the dynamic height field calc...
A Statistical Approach to Testing Equatorial Ocean Models with Observed Data
Statistical Approach Observed Data Equatorial Ocean Models
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2009/1/4
A model testing procedure based on multivariate statistical analysis has been developed to provide an objective measure of the fit between ocean model simulations and observations, taking into account...
Linear Equatorial Wave Mode Initialization in a Model of the Tropical Pacific Ocean：An Initialization Scheme for Tropical Ocean Models
Tropical Pacific Ocean Tropical Ocean Models Linear Equatorial Wave Mode
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2008/12/27
Data assimilation in models of the tropical oceans can generate spurious equatorial wave modes which are potentially harmful to the model background fields. The amplitudes of these spurious wave modes...
A Direct Method for Assimilating Sea Surface Height Data into Ocean Models with Adjustments to the Deep Circulation
Assimilating Sea Surface Deep Circulation subsurface currents
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2008/12/23
There is as yet no consensus an the best method for inserting surface data into ocean models so that appropriate information is transmitted to the deeper layers in a rapid and efficient manner. First ...
Representing Topographic Stress for Large-Scale Ocean Models
seafloor topography Large-Scale Ocean Models ocean circulation
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2008/12/22
Interaction of eddies with seafloor topography can exert enormous, systematic forces on the ocean circulation. This interaction has been considered previously under idealized circumstances. Theoretica...
A Hybrid Vertical Mixing Scheme and Its Application to Tropical Ocean Models
hybrid vertical mixing scheme Tropical Ocean Models Kraus–Turner-type mixed layer model dynamic instability model
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2008/12/16
A novel hybrid vertical mixing scheme, based jointly on the Kraus–Turner-type mixed layer model and Price's dynamic instability model, is introduced to aid in parameterization of vertical turbulent mi...
Frictional Formulations in Numerical Ocean Models and Their Effect on Simulated Acoustic Fields
Numerical Ocean Models Simulated Acoustic Fields
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2008/12/15
This study has examined the effects of frictional formulations in numerical ocean models on simulated acoustic fields. Starting from the same initial state of a perturbation to a simple linear front, ...
Two-Way Interactive Nesting of Primitive Equation Ocean Models with Topography
Two-Way Interactive Nesting Topography Primitive Equation Ocean Models
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2008/12/12
Two-way interactive nesting of primitive equation ocean models is investigated, with special attention to the problems encountered when oceanic features, for example fronts, intersect the boundaries b...