Dynamic multi-resolution spatial models

Gardar Johannesson

doi:10.1007/s10651-006-0005-9

2007-01-20

PRE

Gardar Johannesson *

Noel Cressie

Hsin‐Cheng Huang

DOI：10.1007/s10651-006-0005-9

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摘要

En 中文

Data from remote-sensing platforms play an important role in monitoring environmental processes, such as the distribution of stratospheric ozone. Remote-sense data are typically spatial, temporal, and massive. Existing prediction methods such as kriging are computationally infeasible. The multi-resolution spatial model (MRSM) captures nonstationary spatial dependence and produces fast optimal estimates using a change-of-resolution Kalman filter. However, past data can provide valuable information about the current status of the process being investigated. In this article, we incorporate the temporal dependence into the process by developing a dynamic MRSM. An application of the dynamic MRSM to a month of daily total column ozone data is presented, and on a given day the results of posterior inference are compared to those for the spatial-only MRSM. It is apparent that there are advantages to using the dynamic MRSM in regions where data are missing, such as when a whole swath of satellite data is missing.

Keyword:

Bayesian models

change-of-resolution Kalman filter

spatio-temporal prediction

total column ozone

tree-structured model

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Environmental and Ecological Statistics

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1.8

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