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A space‐time analysis of ground‐level ozone data
Author(s) -
Guttorp Peter,
Meiring Wendy,
Sampson Paul D.
Publication year - 1994
Publication title -
environmetrics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.68
H-Index - 58
eISSN - 1099-095X
pISSN - 1180-4009
DOI - 10.1002/env.3170050305
Subject(s) - covariance , san joaquin , environmental science , meteorology , space time , atmospheric sciences , separable space , ozone , analysis of covariance , covariance function , statistics , mathematics , geography , geology , mathematical analysis , chemical engineering , soil science , engineering
We examine hourly ozone data collected in connection with a model evaluation study for ozone transport in the San Joaquin Valley of California. A space‐time analysis of a subset of the data, 17 sites concentrated around the Sacramento area, indicates a relatively simple spatial covariance structure at night‐time, while the afternoon readings show a more complex spatial covariance, which is partly explained by observations from a single station with suspicious data. Simple separable space‐time covariance models do not appear applicable to these data.