No full text
Unpublished conference/Abstract (Scientific congresses and symposiums)
Using monovariate and multivariate EOFs to reconstruct missing data with DINEOF
Alvera Azcarate, Aïda; Barth, Alexander; Sirjacobs, Damien et al.
2008GODAE Final Symposium, 2008
 

Files


Full Text
No document available.

Send to



Details



Abstract :
[en] DINEOF (Data Interpolating Empirical Orthogonal Functions) is an EOF-based method to reconstruct missing data in geophysical data sets. DINEOF can be used to reconstruct monovariate data sets (as sea surface temperature (SST), chlorophyll, etc), and multivariate data sets with little increase in complexity. For multivariate reconstructions, extended EOFs are used, which take into account the interrelationships between related variables to infer data at missing locations. Spatial maps of the standard deviation of the reconstruction error can be also calculated. In the past, DINEOF has been compared to Optimal Interpolation (OI) techniques for the Adriatic Sea SST. The results showed that DINEOF was faster than OI, making it very suitable for operational applications. DINEOF was also more accurate when compared to in situ data. Another advantage of DINEOF is that there is no need for a priori knowledge of the statistics of the reconstructed data set (such as covariance or correlation length), thus reducing the subjectivity of the analysis. DINEOF has been successfully used to reconstruct a large variety of domains over the world ocean, mostly at the regional scale. In addition to an overview of the technique's capabilities, limitations and future developments, recent work aimed to improve the quality of the reconstructions at the global and local scales will be presented.
Research center :
Centre Interfacultaire de Recherches en Océanologie - MARE - GHER
Disciplines :
Earth sciences & physical geography
Author, co-author :
Alvera Azcarate, Aïda  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > GeoHydrodynamics and Environment Research (GHER)
Barth, Alexander  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > GeoHydrodynamics and Environment Research (GHER)
Sirjacobs, Damien ;  Université de Liège - ULiège > Département des sciences de la vie > Algologie, mycologie et systématique expérimentale
Beckers, Jean-Marie  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > GeoHydrodynamics and Environment Research (GHER)
Language :
English
Title :
Using monovariate and multivariate EOFs to reconstruct missing data with DINEOF
Publication date :
2008
Event name :
GODAE Final Symposium, 2008
Event place :
Nice, France
Event date :
du 12 novembre 2008 au 15 novembre 2008
Audience :
International
Available on ORBi :
since 17 December 2009

Statistics


Number of views
95 (4 by ULiège)
Number of downloads
0 (0 by ULiège)

Bibliography


Similar publications



Contact ORBi