IMIS | Vlaams Instituut voor de Zee
 

Vlaams Instituut voor de Zee

Platform voor marien onderzoek

IMIS

Publicaties | Instituten | Personen | Datasets | Projecten | Kaarten
[ meld een fout in dit record ]mandje (0): toevoegen | toon Print deze pagina

Approximate and efficient methods to assess error fields in spatial gridding with Data Interpolating Variational Analysis (DIVA)
Beckers, J.-M.; Barth, A.; Troupin, C.; Alvera-Azcárate, A. (2014). Approximate and efficient methods to assess error fields in spatial gridding with Data Interpolating Variational Analysis (DIVA). J. Atmos. Oceanic. Technol. 31(2): 515-530. http://hdl.handle.net/10.1175/JTECH-D-13-00130.1
In: Journal of Atmospheric and Oceanic Technology. American Meteorological Society: Boston, MA. ISSN 0739-0572; e-ISSN 1520-0426, meer
Peer reviewed article  

Beschikbaar in  Auteurs | Dataset 

Trefwoord
    Marien
Author keywords
    Error analysis, Interpolation schemes, Inverse methods, Variational analysis

Auteurs  Top | Dataset 
  • Beckers, J.-M., meer
  • Barth, A., meer
  • Troupin, C., meer
  • Alvera-Azcárate, A., meer

Abstract
    This paper presents new approximate methods to provide error fields for the spatial analysis tool Data Interpolating Variational Analysis (DIVA). The first method shows how to replace the costly analysis of a large number of covariance functions with a single analysis for quick error computations. Then another method is presented where the error is only calculated in a small number of locations, and from there the spatial error field itself is interpolated by the analysis tool. The efficiency of the methods is illustrated on simple schematic test cases and a real application in the Mediterranean Sea. These examples show that with these methods, one has the possibility for quick masking of regions void of sufficient data and the production of “exact” error fields at reasonable cost. The error-calculation methods can also be generalized for use with other analysis methods such as three-dimensional variational data assimilation (3DVAR) and are therefore potentially interesting for other implementations.

Dataset
  • Neural network modelling of Baltic zooplankton abundances, meer

Alle informatie in het Integrated Marine Information System (IMIS) valt onder het VLIZ Privacy beleid Top | Auteurs | Dataset