Variational assimilation of glider data in Monterey Bay

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ID: 302358
2011
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Abstract
Abstract : Temperature and salinity profiles observed by gliders in the Monterey Bay in August 2003 are assimilated into NCOM model in the framework of a 3dVar scheme with a hybrid background error covariance (BEC) representation. The model performance is validated against independent mooring observations for the assimilation runs with I-hour analysis cycle In the first experiment the background error statistics was estimated using the ensemble of model states spanning the entire observation period, whereas in the second experiment the BEC information was acquired by averaging over the 3day floating temporal window (FTW) centered at the analysis time. It is found that the FTW scheme provides lower discrepancy between the values of temperature, salinity and velocity predicted by the model and observed at the moorings. The improvement becomes more clearly visible during the upwelling and relaxations events, associated with intermittent wind forcing. During these periods the FTW scheme provides a significantly (2-3 times) better fit to the mooring data.
Reference Key
openalex_W2014459246 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Chudong Pan, Max Yaremchuk, Dmitri Nechaev, Hans Ngodock
Journal journal of marine research
Year 2011
DOI
10.1357/002224011798765259
URL
https://doi.org/10.1357/002224011798765259
Keywords Keywords not found

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