The dais la peyne experiment: Using the optical and thermal dais bands to survey and model the surface temperature

Arko Lucieer, Eva Koster, Steven De Jong, Victor Jetten

Research output: Contribution to journalConference articleAcademicpeer-review

Abstract

In the summer of 1998, an experimental flight was carried out with the Digital Airborne Imaging Spectrometer (DAIS7915) over the Peyne test site in southern France. DAIS is a hyperspectral system with 72 bands from visible to shortwave infrared wavelengths and 7 bands in the thermal infrared. This study investigates the integrated use of thermal- and optical bands for extracting information from DAIS to simulate the thermal behaviour of the soil surface and the vegetation. Field survey during the days around the over flight time yielded information on the daily thermal cycle of various surfaces. Next a geostatistical sampling approach and interpolation algorithms were used to produce maps of soil properties controlling the thermal behaviour of the soil surface. Conditional simulation provided insight in the spatial distribution of the uncertainty of the soil properties. The field data showed that significant differences exist between the surface temperature of the various soil types and land cover. The optical DAIS images were converted from radiance into reflectance using the empirical line method. The uncalibrated digital numbers of the thermal DAIS bands were converted into absolute temperature values by using field measurements collected during the overflight. Next, the DAIS optical spectral bands were used to assess the vegetative cover and the land cover type on a pixel-by-pixel basis. A dynamic, spatial model was built simulating the surface temperature over 48 hours. Input for the model was extracted from the DAIS imagery and collected in the field. This model was calibrated by field temperature measurements.

Original languageEnglish
Pages (from-to)347-354
Number of pages8
JournalInternational Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives
Volume33
Publication statusPublished - 2000
Event19th International Congress for Photogrammetry and Remote Sensing, ISPRS 2000 - Amsterdam, Netherlands
Duration: 16 Jul 200023 Jul 2000

Bibliographical note

Publisher Copyright:
© 2000 International Society for Photogrammetry and Remote Sensing. All rights reserved.

Keywords

  • Digital airborne imaging spectrometer (DAIS7915)
  • Hyper spectral imagery
  • Image correction and interpretation
  • Land cover
  • Surface energy balance
  • Temperature modelling

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