Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 392781
Title A disposition of interpolation techniques
Author(s) Knotters, M.; Heuvelink, G.B.M.
Source Wageningen : Wettelijke Onderzoekstaken Natuur & Milieu (WOt-werkdocument 190) - 86
Department(s) Soil Science Centre
Land Dynamics
Publication type Research report
Publication year 2010
Keyword(s) pesticiden - waterkwaliteit - kriging - tijdreeksen - statistiek - onzekerheid - nauwkeurigheid - natuur - milieu-analyse - geostatistiek - interpolatie - pesticides - water quality - time series - statistics - uncertainty - accuracy - nature - environmental analysis - geostatistics - interpolation
Categories Environmental Sciences (General) / Environmental Pollution
Abstract A large collection of interpolation techniques is available for application in environmental research. To help environmental scientists in choosing an appropriate technique a disposition is made, based on 1) applicability in space, time and space-time, 2) quantification of accuracy of interpolated values, 3) incorporation of ancillary information, and 4) incorporation of process knowledge. The described methods include inverse distance weighting, nearest neighbour methods, geostatistical interpolation methods, Kalman filter methods, Bayesian Maximum Entropy methods, etc. The applicability of methods in aggregation (upscaling) and disaggregation (downscaling) is discussed. Software for interpolation is described. The application of interpolation techniques is illustrated in two case studies: temporal interpolation of indicators for ecological water quality, and spatio-temporal interpolation and aggregation of pesticide concentrations in Dutch surface waters. A valuable next step will be to construct a decision tree or decision support system, that guides the environmental scientist to easy-to-use software implementations that are appropriate to solve their interpolation problem. Validation studies are needed to assess the quality of interpolated values, and the quality of information on uncertainty provided by the interpolation method.
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