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Fusing point and areal level space-time data with application to wet deposition

Publication ,  Journal Article
Sahu, SK; Gelfand, AE; Holland, DM
Published in: Journal of the Royal Statistical Society. Series C: Applied Statistics
January 1, 2010

Motivated by the problem of predicting chemical deposition in eastern USA at weekly, seasonal and annual scales, the paper develops a framework for joint modelling of point- and grid-referenced spatiotemporal data in this context. The hierarchical model proposed can provide accurate spatial interpolation and temporal aggregation by combining information from observed point-referenced monitoring data and gridded output from a numerical simulation model known as the 'community multi-scale air quality model'. The technique avoids the change-of-support problem which arises in other hierarchical models for data fusion settings to combine point- and grid-referenced data. The hierarchical space-time model is fitted to weekly wet sulphate and nitrate deposition data over eastern USA. The model is validated with set-aside data from a number of monitoring sites. Predictive Bayesian methods are developed and illustrated for inference on aggregated summaries such as quarterly and annual sulphate and nitrate deposition maps. The highest wet sulphate deposition occurs near major emissions sources such as fossil-fuelled power plants whereas lower values occur near background monitoring sites. © 2010 Royal Statistical Society.

Duke Scholars

Published In

Journal of the Royal Statistical Society. Series C: Applied Statistics

DOI

EISSN

1467-9876

ISSN

0035-9254

Publication Date

January 1, 2010

Volume

59

Issue

1

Start / End Page

77 / 103

Related Subject Headings

  • Statistics & Probability
  • 4905 Statistics
  • 0104 Statistics
 

Citation

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Sahu, S. K., Gelfand, A. E., & Holland, D. M. (2010). Fusing point and areal level space-time data with application to wet deposition. Journal of the Royal Statistical Society. Series C: Applied Statistics, 59(1), 77–103. https://doi.org/10.1111/j.1467-9876.2009.00685.x
Sahu, S. K., A. E. Gelfand, and D. M. Holland. “Fusing point and areal level space-time data with application to wet deposition.” Journal of the Royal Statistical Society. Series C: Applied Statistics 59, no. 1 (January 1, 2010): 77–103. https://doi.org/10.1111/j.1467-9876.2009.00685.x.
Sahu SK, Gelfand AE, Holland DM. Fusing point and areal level space-time data with application to wet deposition. Journal of the Royal Statistical Society Series C: Applied Statistics. 2010 Jan 1;59(1):77–103.
Sahu, S. K., et al. “Fusing point and areal level space-time data with application to wet deposition.” Journal of the Royal Statistical Society. Series C: Applied Statistics, vol. 59, no. 1, Jan. 2010, pp. 77–103. Scopus, doi:10.1111/j.1467-9876.2009.00685.x.
Sahu SK, Gelfand AE, Holland DM. Fusing point and areal level space-time data with application to wet deposition. Journal of the Royal Statistical Society Series C: Applied Statistics. 2010 Jan 1;59(1):77–103.
Journal cover image

Published In

Journal of the Royal Statistical Society. Series C: Applied Statistics

DOI

EISSN

1467-9876

ISSN

0035-9254

Publication Date

January 1, 2010

Volume

59

Issue

1

Start / End Page

77 / 103

Related Subject Headings

  • Statistics & Probability
  • 4905 Statistics
  • 0104 Statistics