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Data assimilation is the process of combining our knowledge of a system, including both observations and dynamics, to produce estimates of the state of a system. The state of a system, or state variab...
The modular ocean data assimilation system (MODAS) was designed to meet the U.S. Navy's need to produce rapid estimates of present and near-term ocean conditions, often in situations where little or n...
Progress and Prospects of U.S. Data Assimilation in Ocean Research
Ocean Research Progress and Prospects
2015/7/23
This report summarizes goals, activities, and recommendations of a workshop on data assimilation held in Williamsburg, Virginia on September 9–11, 2003, and sponsored by the U.S. Office of Naval Resea...
Eastern US Continental Shelf Carbon Budget:Integrating Models,Data Assimilation,and Analysis
Eastern US Continental Shelf Carbon Budget Integrating Models Data Assimilation Analysis
2015/7/20
The past two decades have seen the development of large multidisciplinary oceanographic programs that focus on understanding carbon cycling processes in coastal and oceanic environments. Synthesis and...
Integrating Biogeochemistry and Ecology Into Ocean Data Assimilation Systems
Integrating Biogeochemistry Ecology Ocean Data Assimilation Systems
2015/7/6
Monitoring and predicting the biogeochemical state of the ocean and marine ecosystems is an important application of operational oceanography that needs to be expanded. The accurate depiction of the o...
GODAE: The Global Ocean Data Assimilation Experiment
GODAE Global Ocean Data Assimilation Experiment
2015/7/6
During 1996 and 1997, Neville Smith and Michel Lefèbvre developed the Global Ocean Data Assimilation Experiment (GODAE) concept (Smith and Lefèbvre, 1997). Its central idea was to conduct a 10-year in...
Ocean data assimilation has matured to the point that observations are now routinely combined with model forecasts to produce a variety of ocean products. Approaches to ocean data assimilation vary wi...
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...