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• W3105909742 abstract "Remote sensing of oceanographic data often yields incomplete coverage of the measurement domain. This can limit interpretability of the data and identification of coherent features informative of ocean dynamics. Several methods exist to fill gaps of missing oceanographic data, and are often based on projecting the measurements onto basis functions or a statistical model. Herein, we use an information transport approach inspired from an image processing algorithm. This approach aims to restore gaps in data by advecting and diffusing information of features as opposed to the field itself. Since this method does not involve fitting or projection, the portions of the domain containing measurements can remain unaltered, and the method offers control over the extent of local information transfer. This method is applied to measurements of ocean surface currents by high frequency radars. This is a relevant application because data coverage can be sporadic and filling data gaps can be essential to data usability. Application to two regions with differing spatial scale is considered. The accuracy and robustness of the method is tested by systematically blinding measurements and comparing the restored data at these locations to the actual measurements. These results demonstrate that even for locally large percentages of missing data points, the restored velocities have errors within the native error of the original data (e.g., $<10$% for velocity magnitude and $<3$% for velocity direction). Results were relatively insensitive to model parameters, facilitating a priori selection of default parameters for de novo applications." @default.
• W3105909742 created "2020-11-23" @default.
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• W3105909742 date "2019-01-01" @default.
• W3105909742 modified "2023-10-14" @default.
• W3105909742 title "A Transport Method for Restoring Incomplete Ocean Current Measurements" @default.
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• W3105909742 doi "https://doi.org/10.1029/2018jc014254" @default.
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