Comparer des méthodes

	Co-Krigage Global	Krigage universel (Krigage avec une tendance)
Domaine	Analyse spatiale	Analyse spatiale
Famille	Regression model	Regression model
Année d'origine	1982	1969
Auteur d'origine	Matheron (geostatistics framework); formalized for multivariate case by Myers (1982)	Georges Matheron
Type	Multivariate geostatistical interpolation	Geostatistical interpolation with spatial trend
Source fondatrice	Myers, D. E. (1982). Matrix formulation of co-kriging. Journal of the International Association for Mathematical Geology, 14(3), 249–257.	Matheron, G. (1963). Principles of geostatistics. Economic Geology, 58(8), 1246–1266.
Alias	global cokriging, co-kriging, cokriging, multivariate kriging	kriging with a trend, kriging with drift, trend kriging, evrensel kriging
Apparentées	4	3
Résumé	Global Co-Kriging is a multivariate geostatistical interpolation method that estimates an unsampled primary variable by exploiting its spatial cross-correlation with one or more secondary variables. Unlike local (moving-window) approaches, it fits a single set of variogram and cross-variogram models to the entire study domain and solves one global cokriging system for each prediction location.	Universal kriging generalizes ordinary kriging to data whose mean varies systematically across space — a spatial trend or 'drift'. It models the mean as a function of the coordinates (or covariates) and krigs the residuals, so it can interpolate variables that drift in a preferred direction, such as temperature falling with latitude or a pollutant gradient, while still returning prediction variances.