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Estimation and uncertainty assessment of surface microclimate indicators at local scale using airborne infrared thermography and multispectral imagery

Kotchi Serge-Olivier, Barrette Nathalie, Viau Alain A., Jang Jae-Dong, Gond Valéry, Mostafavi Mir Abolfazl. 2016. Estimation and uncertainty assessment of surface microclimate indicators at local scale using airborne infrared thermography and multispectral imagery. In : Geospatial Technology - Environmental and Social Applications. Imperatore Pascuale (ed.), Pepe Antonio (ed.). Rijeka : Intech Publisher, pp. 99-141. ISBN 978-953-51-4768-8

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Editeur : http://www.intechopen.com/books/geospatial-technology-environmental-and-social-applications/estimation-and-uncertainty-assessment-of-surface-microclimate-indicators-at-local-scale-using-airbor

Abstract : A precise estimation and the characterization of the spatial variability of microclimate conditions (MCCs) are essential for risk assessment and site-specific management of vector-borne diseases and crop pests. The objective of this study was to estimate at local scale, and assess the uncertainties of Surface Microclimate Indicators (SMIs) derived from airborne infrared thermography and multispectral imaging. SMIs including Surface Temperature (ST) were estimated in southern Quebec, Canada. The formulation of their uncertainties was based on in-situ observations and the law of propagation of uncertainty. SMIs showed strong local variability and intra-plot variability of MCCs in the study area. The ST values ranged from 290 K to 331 K. They varied more than 17 K on vegetable crop fields. The correlation between ST and in-situ observations was very high (r = 0.99, p = 0.010). The uncertainty and the bias of ST compared to in-situ observations were 0.73 K and ±1.42 K respectively. This study demonstrated that very high spatial resolution multispectral imaging and infrared thermography present a good potential for the characterization of the MCCs that govern the abundance and the behavior of disease vectors and crop pests in a given area. (Résumé d'auteur)

Mots-clés Agrovoc : Microclimat, Télédétection, Imagerie multispectrale, Thermographie, Rayonnement infrarouge, Température, Température du sol, Humidité, Modèle mathématique, Donnée météorologique, Imagerie par satellite, Surveillance épidémiologique, Gestion du risque, Contrôle de maladies, Végétation, Couverture végétale, Indice de surface foliaire, Cartographie, indicateur, Protection des plantes, Maladie des plantes, Ravageur des plantes

Mots-clés géographiques Agrovoc : Québec

Mots-clés libres : Airborne remote sensing, Infrared thermography, Microclimate indicators, Uncertainty, Local scale, Crop, Pests and diseases

Classification Agris : U40 - Surveying methods
U10 - Mathematical and statistical methods
B10 - Geography
H10 - Pests of plants
H20 - Plant diseases

Axe stratégique Cirad : Axe 4 (2014-2018) - Santé des animaux et des plantes

Auteurs et affiliations

  • Kotchi Serge-Olivier, Université de Laval (CAN)
  • Barrette Nathalie
  • Viau Alain A., Université Laval (CAN)
  • Jang Jae-Dong, Université Laval (CAN)
  • Gond Valéry, CIRAD-ES-UPR BSef (FRA) ORCID: 0000-0002-0080-3140
  • Mostafavi Mir Abolfazl

Autres liens de la publication

Source : Cirad-Agritrop (https://agritrop.cirad.fr/581523/)

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