نتایج جستجو برای: ensemble kalman filter
تعداد نتایج: 166173 فیلتر نتایج به سال:
In ensemble Kalman filter methods, localization is applied for both avoiding the spurious correlations of distant observations and increasing the effective size of the ensemble space. The procedure is essential in order to provide quality assimilation in large systems; however a severe localization can cause imbalances that impact negatively on the accuracy of the analysis. We want to understan...
Using Improved Background-Error Covariances from an Ensemble Kalman Filter for Adaptive Observations
A method for determining adaptive observation locations is demonstrated. This method is based on optimal estimation (Kalman filter) theory; it determines the observation location that will maximize the expected improvement, which can be measured in terms of the expected reduction in analysis or forecast variance. This technique requires an accurate model for background error statistics that var...
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