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Representativeness of point soil moisture observations, upscaling and assimilation

(2007) IAHS Publication. 313. p.249-257
Author
Organization
Abstract
To estimate the temporal evolution of the spatial mean soil moisture in the Optimizing Production Inputs for Economic and Environmental Enhancement (OPE3) field, the relationship between point measurements and the average behaviour of field-scale soil moisture has been investigated. In a simple variational assimilation experiment with the Community Land Model (CLM2.0), it has been shown that the soil moisture information from a representative site was much more appropriate for estimating the spatial mean soil moisture profile than the information from other sites. The best results for the re-analysis as well as for the prediction of the spatial mean soil moisture were obtained through the assimilation of observations from probes with time-mean differences between their recorded point values and the spatial mean values close to zero. Further improved results can be obtained by upscaling the point data, e.g. after matching the point observations cumulative density function to that of the spatial mean soil moisture.
Keywords
assimilation, stability, soil moisture, scaling

Citation

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Chicago
De Lannoy, Gabriëlle, Valentijn Pauwels, Paul R Houser, Timothy Gish, and Niko Verhoest. 2007. “Representativeness of Point Soil Moisture Observations, Upscaling and Assimilation.” In IAHS Publication, ed. Eva Boegh, Harald Kunstmann, Thorsten Wagener, Alan Hall, Luis Bastidas, Stewart Franks, Hoshin Gupta, Dan Rosbjerg, and John Schaake, 313:249–257. Wallingford, UK: International Association of Hydrological Sciences (IAHS).
APA
De Lannoy, G., Pauwels, V., Houser, P. R., Gish, T., & Verhoest, N. (2007). Representativeness of point soil moisture observations, upscaling and assimilation. In E. Boegh, H. Kunstmann, T. Wagener, A. Hall, L. Bastidas, S. Franks, H. Gupta, et al. (Eds.), IAHS Publication (Vol. 313, pp. 249–257). Presented at the Symposium HS2004, Wallingford, UK: International Association of Hydrological Sciences (IAHS).
Vancouver
1.
De Lannoy G, Pauwels V, Houser PR, Gish T, Verhoest N. Representativeness of point soil moisture observations, upscaling and assimilation. In: Boegh E, Kunstmann H, Wagener T, Hall A, Bastidas L, Franks S, et al., editors. IAHS Publication. Wallingford, UK: International Association of Hydrological Sciences (IAHS); 2007. p. 249–57.
MLA
De Lannoy, Gabriëlle, Valentijn Pauwels, Paul R Houser, et al. “Representativeness of Point Soil Moisture Observations, Upscaling and Assimilation.” IAHS Publication. Ed. Eva Boegh et al. Vol. 313. Wallingford, UK: International Association of Hydrological Sciences (IAHS), 2007. 249–257. Print.
@inproceedings{673216,
  abstract     = {To estimate the temporal evolution of the spatial mean soil moisture in the Optimizing Production Inputs for Economic and Environmental Enhancement (OPE3) field, the relationship between point measurements and the average behaviour of field-scale soil moisture has been investigated. In a simple variational assimilation experiment with the Community Land Model (CLM2.0), it has been shown that the soil moisture information from a representative site was much more appropriate for estimating the spatial mean soil moisture profile than the information from other sites. The best results for the re-analysis as well as for the prediction of the spatial mean soil moisture were obtained through the assimilation of observations from probes with time-mean differences between their recorded point values and the spatial mean values close to zero. Further improved results can be obtained by upscaling the point data, e.g. after matching the point observations cumulative density function to that of the spatial mean soil moisture.},
  author       = {De Lannoy, Gabri{\"e}lle and Pauwels, Valentijn and Houser, Paul R and Gish, Timothy and Verhoest, Niko},
  booktitle    = {IAHS Publication},
  editor       = {Boegh, Eva and Kunstmann, Harald and Wagener, Thorsten and Hall, Alan and Bastidas, Luis and Franks, Stewart and Gupta, Hoshin and Rosbjerg, Dan and Schaake, John},
  isbn         = {9781901502091},
  issn         = {0144-7815},
  keyword      = {assimilation,stability,soil moisture,scaling},
  language     = {eng},
  location     = {Perugia, Italy},
  pages        = {249--257},
  publisher    = {International Association of Hydrological Sciences (IAHS)},
  title        = {Representativeness of point soil moisture observations, upscaling and assimilation},
  volume       = {313},
  year         = {2007},
}