Skip to main content

IMIS

A new integrated search interface will become available in the next phase of marineinfo.org.
For the time being, please use IMIS to search available data

 

[ report an error in this record ]basket (0): add | show Print this page

An analysis of the error space of a high-resolution implementation of the GHER hydrodynamic model in the Mediterranean Sea
Vandenbulcke, L.; Rixen, M.; Beckers, J.M.; Alvera-Azcarate, A.; Barth, A. (2008). An analysis of the error space of a high-resolution implementation of the GHER hydrodynamic model in the Mediterranean Sea. Ocean Modelling 24(1-2): 46-64. dx.doi.org/10.1016/j.ocemod.2008.05.007
In: Ocean Modelling. Elsevier: Oxford. ISSN 1463-5003; e-ISSN 1463-5011, more
Peer reviewed article  

Available in  Authors 

Keyword
    Marine/Coastal
Author keywords
    model error; ensemble run; Mediterranean Sea

Authors  Top 
  • Vandenbulcke, L., more
  • Rixen, M.
  • Beckers, J.M., more
  • Alvera-Azcarate, A.
  • Barth, A., more

Abstract
    An ensemble of 250 model setups covering the Mediterranean Sea is built by perturbing various parameters: the bathymetry, the initial conditions, atmospheric forcing fields (air temperature, cloud coverage, wind), and internal model parameters (diffusion coefficients). The ensemble is then forwarded in time using the GHER hydrodynamic model, allowing to obtain information about the expected error associated with the forecast in a natural way. The evolution of this error is analyzed. In particular, we examine the time evolution and stationarity of its spatial average, and the spatial distribution of the error at different instants, by means of its first to fourth order moments, and of empirical orthogonal functions. We verify whether the a posteriori error distribution is Gaussian using the Anderson-Darling test. From these results, we are able to assess what parameters and forcing fields are most critical for the forecast. Qualitative conclusions are obtained throughout the text, in accordance with our expectations. Moreover, quantitative estimations of the expected error are also given.

All data in the Integrated Marine Information System (IMIS) is subject to the VLIZ privacy policy Top | Authors