An evaluation of SCOPE : a tool to simulate the directional anisotropy of satellite-measured surface temperatures

C. Duffour, A. Olioso, J. Demarty, C. van der Tol, J.P. Lagouarde

Research output: Contribution to journalArticleAcademicpeer-review

29 Citations (Scopus)

Abstract

This study assesses the performance of the SCOPE model (Van der Tol et al., 2009) to reproduce directional anisotropy of remote sensing thermal infrared measurements. A calibration/validation exercise over two datasets (winter wheat and young pine stand) on energy balance fluxes is presented. Surface sensible and latent heat fluxes are correctly simulated (with RMSE in the range of 30–50 W∙ m − 2) together with directional temperatures in 4 different viewing geometries (RMSE < 1.4 K) for both canopies. The sensitivity of the model to two critical but uncertain parameters, the maximum carboxylation capacity Vcmo, and a stomatal parameter λ (the marginal water cost of carbon assimilation) is discussed; it is shown that anisotropy displays limited sensitivity to both parameters for the experimental conditions met over a well-watered wheat field. The ability of SCOPE to simulate anisotropy is finally illustrated by a qualitative comparison against experimental measurements obtained over a mature pine stand using an airborne TIR camera. SCOPE-simulated TIR directional anisotropy appears to be consistent with the experimental data
Original languageEnglish
Pages (from-to)362-375
Number of pages14
JournalRemote sensing of environment
Volume158
DOIs
Publication statusPublished - 16 Dec 2015

Keywords

  • METIS-307147
  • ITC-ISI-JOURNAL-ARTICLE

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