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Spatialisation des températures en zone de montagne alpine

Abstract : Most of climatic parameters are measured at point locations, in climatological stations of an often
unequal density network. However, many applications need climatic values at any point of the studied field. This
PhD thesis proposes an evaluation of the uncertainty level for spatialization of temperatures in mountainous
areas and a demonstration of the scale/method relation, then a quantification of the benefits of each method
according to the scale of concerned applications. The subject thus includes, firstly, some developments of
spatialization methods for temperatures, explaining spatial variations of temperatures: which factors work, make
change the temperatures, and in which proportions?
The realization of models, at various scales, is accompanied by an interpolation (reconstitution of the thermal
fields by application of the previously computed models).
This research includes a work on geographical information systems, and spatial variables extracted from them:
land cover, relief, slope, aspect, radiation, etc), as well as a frequent use of statistical methods (univariate
regressions, multivariate regressions, variance analysis, principal component analysis, etc.)
Simulations are the final step, once spatializations are finished and validations are carried out.
Geographical data are mainly provided by the SEIGAD laboratory and the French National Geographical Institute,
weather knowledge and data come from Météo-France (daily minimum and maximum temperatures, weather
types, SAFRAN model...)
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Contributor : Remi Lhotellier Connect in order to contact the contributor
Submitted on : Tuesday, December 20, 2005 - 11:30:31 AM
Last modification on : Friday, March 25, 2022 - 11:09:41 AM
Long-term archiving on: : Tuesday, April 6, 2010 - 4:31:28 PM


  • HAL Id : tel-00011241, version 1




Remi Lhotellier. Spatialisation des températures en zone de montagne alpine. Géographie. Université Joseph-Fourier - Grenoble I, 2005. Français. ⟨tel-00011241⟩



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