NASA Jet Propulsion Laboratory California Institute of Technology Follow this link to skip to the main content

BEACON eSpace at Jet Propulsion Laboratory >
JPL Technical Report Server >
JPL TRS 1992+ >

Please use this identifier to cite or link to this item: http://hdl.handle.net/2014/40919

Title: A three-dimensional variational data assimilation scheme for the Regional Ocean Modeling System : implementation and basic experiments
Authors: Li, Zhijin
Chao, Yi
McWilliams, James C.
Ide, Kayo
Keywords: Regional Ocean Modeling System (ROMS)
upwelling
California coastal ocean
Issue Date: 3-May-2008
Publisher: American Geophysical Union.
Citation: Journal Of Geophysical Research, Vol. 113, C05002, doi:10.1029/2006JC004042, 2008
Abstract: A three-dimensional variational data assimilation scheme for the Regional Ocean Modeling System (ROMS), named ROMS3DVAR, has been described in the work of Li et al. (2008). In this paper, ROMS3DVAR is applied to the central California coastal region, an area characterized by inhomogeneity and anisotropy, as well as by dynamically unbalanced flows. A method for estimating the model error variances from limited observations is presented, and the construction of the inhomogeneous and anisotropic error correlations based on the Kronecker product is demonstrated. A set of single observation experiments illustrates the inhomogeneous and anisotropic error correlations and weak dynamic constraints used. Results are presented from the assimilation of data gathered during the Autonomous Ocean Sampling Network (AOSN) experiment during August 2003. The results show that ROMS3DVAR is capable of reproducing complex flows associated with upwelling and relaxation, as well as the rapid transitions between them. Some difficulties encountered during the experiment are also discussed.
URI: http://hdl.handle.net/2014/40919
Appears in Collections:JPL TRS 1992+

Files in This Item:

File Description SizeFormat
06-3842.pdf1.55 MBAdobe PDFView/Open

Items in DSpace are protected by copyright, but are furnished with U.S. government purpose use rights.

 

Privacy/Copyright Image Policy Beacon Home Contact Us
NASA Home Page + Div 27
+ JPL Space
Site last updated on December 5, 2014.
If you have any comments or suggestions for this web site, please e-mail Robert Powers.