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	Panel Universal Kriging	Universell kriging (Kriging med en trend)
Ämnesområde	Rumslig analys	Rumslig analys
Familj	Regression model	Regression model
Ursprungsår	1963 (base method); panel extension: 1990s–2000s	1969
Upphovsperson	Matheron, G.; extended to panel settings by geostatistical literature	Georges Matheron
Typ	Geostatistical interpolation	Geostatistical interpolation with spatial trend
Ursprungskälla	Matheron, G. (1963). Principles of geostatistics. Economic Geology, 58(8), 1246–1266.	Matheron, G. (1963). Principles of geostatistics. Economic Geology, 58(8), 1246–1266.
Alias	UK panel interpolation, panel UK, universal kriging for panel data, longitudinal universal kriging	kriging with a trend, kriging with drift, trend kriging, evrensel kriging
Närliggande	5	3
Sammanfattning	Panel Universal Kriging extends Universal Kriging to data structures with repeated spatial observations over time (panel or longitudinal format). It simultaneously estimates a deterministic trend surface — incorporating covariates that vary across both space and time — and a stochastic spatially correlated residual, pooling information across all time periods to improve prediction accuracy and parameter stability.	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.