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- Title
A class of nonseparable and nonstationary spatial temporal covariance functions.
- Authors
Fuentes, Montserrat; Li Chen; Davis, Jerry M.
- Abstract
The article presents a study on the dependency structure of spatial temporal processes. The author introduces a general and flexible parametric class of spatial temporal covariance models that allows for lack of stationarity and separability by using a spectral representation of the process. This parametric class of spatial temporal covariance models has a unique parameter that indicates the strength of the interaction between the spatial and temporal components. The class also has the separable covariance model as a particular case. The study introduces an application with ambient ozone air pollution data.
- Subjects
SPECTRAL energy distribution; ANALYSIS of covariance; SPATIAL analysis (Statistics); GEOLOGICAL statistics; PARAMETER estimation; AIR pollution
- Publication
Environmetrics, 2008, Vol 19, Issue 5, p487
- ISSN
1180-4009
- Publication type
Article
- DOI
10.1002/env.891