搜索结果: 1-15 共查到“海洋物理学 Data Assimilation”相关记录17条 . 查询时间(0.093 秒)
Data Assimilation Tests with an Oceanic Mixed-Layer Model
Data Assimilation Tests Oceanic Mixed-Layer Model
2009/2/8
A data assimilation technique using a one-dimensional, ocean mixed-layer model to advance the thermal structure observations to the analysis time is tested. The effects of insertions of erroneous temp...
Initialization and Data Assimilation in Models of the Indian Ocean
general circulation model Indian Ocean
2009/1/9
Numerical experiments have been conducted to investigate the effect of updating models of the Indian Ocean using simulated temperature (mass) and velocity data. Two models are used: a linear reduced g...
Ocean Data Assimilation and the Moan Filter：Spatial Regularity
Ocean Data Assimilation Moan Filter Regularity
2009/1/8
Ocean circulation models are infinite-dimensional dynamical systems. If the Kalman filter is used to assimilate data into such systems, then their infinite-dimensionality must be recognized. In other ...
A Global Oceanic Data Assimilation System
Global Oceanic Data Assimilation System general circulation models
2009/1/4
A global oceanic four-dimensional data assimilation system has been developed for use in initializing coupled ocean–atmosphere general circulation models and many other applications. The data assimila...
Aspects of Geostrophic Adjustment during Tropical Ocean Data Assimilation
Tropical Ocean Data Assimilation Geostrophic Adjustment
2008/12/30
Subsurface temperature data from the ship-of-opportunity network in the tropical Pacific Ocean was assimilated into a simple reduced-gravity model. A large initialization shock was found to occur in t...
Data Assimilation Applied to the Temperature and Circulation in the Tropical Atlantic, 1983–84
Data Assimilation complete temperature velocity fields Tropical Atlantic
2008/12/27
A hydrographic dataset based on data from the SEQUAL/FOCAL experiment is used to determine the errors of a numerical simulation of the complete temperature and velocity fields of the tropical Atlantic...
Data Assimilation in a Quasi-geostrophic Open-Ocean Model of the Gulf Stream Region Using the Adjoint Method
quasi-geostrophic Gulf Stream Region Quasi-geostrophic Open-Ocean Model
2008/12/23
The method of adjoint data assimilation is applied in a quasi-geostrophic (QG) open-ocean model of the Gulf Stream region. The results of data assimilation experiments are presented in which simulated...
The Role of Integration Time in Determining a Steady State through Data Assimilation
general circulation model Data Assimilation
2008/12/23
The length of time an ocean model and its adjoint should be integrated in determining a steady state compatible with observed data is investigated. The starting point is based upon a suggestion that o...
Simulated Annealing：A Tool for Data Assimilation into an Almost Steady Model State
Steady Model State nonlinear time-dependent model
2008/12/18
A new method is used to calculate a steady-state best fit of a given strongly nonlinear time-dependent model to observed data. The proposed technique has a statistical nature and is known as simulated...
Data Assimilation in a Simple Tropical Ocean Model with Wind Stress Errors
Data Assimilation Wind Stress Errors Tropical Ocean Model
2008/12/16
A major error source in the numerical simulation of tropical oceans is the uncertainty in wind stress forcing. A reduced-gravity shallow-water model has been used to test how assimilated ocean data co...
Variational Data Assimilation for Determining the Seasonal Net Surface Heat Flux Using a Tropical Pacific Ocean Model
sea surface temperature Tropical Pacific Ocean Model surface heat flux
2008/12/12
The authors present a study for determining the seasonal net surface heat flux over the tropical Pacific Ocean using an adjoint technique. A simple tropical ocean model with thermodynamics is chosen a...
Isopycnal EOFs in the Azores Current Region: A Statistical Tool forDynamical Analysis and Data Assimilation
empirical orthogonal functions sea level anomaly Azores Current Azores Front
2008/12/3
An empirical orthogonal function analysis of the vertical space–time variability of the thermohaline structure of the ocean in summer and fall 1993 in the Azores Current region has been performed. The...
Isopycnal EOFs in the Azores Current Region: A Statistical Tool forDynamical Analysis and Data Assimilation
empirical orthogonal functions sea level anomaly Azores Current
2008/11/26
An empirical orthogonal function analysis of the vertical space–time variability of the thermohaline structure of the ocean in summer and fall 1993 in the Azores Current region has been performed. The...
Geosat Data Assimilation with Application to the Eastern North Atlantic
quasigeostrophic North Atlantic Ocean Geosat Data Assimilation
2008/11/11
An attempt is made to determine the three-dimensional ocean circulation from satellite altimeter measurements by assimilating Geosat sea surface height data into an eddy-resolving quasigeostrophic (QG...
A Simple Ocean Data Assimilation Analysis of the Global Upper Ocean 1950–95. Part I: Methodology
Ocean Data Global Upper Ocean
2008/6/30
The authors describe a 46-year global retrospective analysis of upper-ocean temperature, salinity, and currents. The analysis is an application of the Simple Ocean Data Assimilation (SODA) package. SO...