Title :
Simultaneous usage of optic and thermal hyperspectral sensors for crop water stress characterization
Author :
Pipia, Luca ; Pérez, Fernando ; Tardà, Anna ; Martínez, Lucas ; Arbiol, Roman
Author_Institution :
Inst. Cartografic de Catalunya (ICC), Barcelona, Spain
Abstract :
Visible-Near InfraRed (VNIR) and Thermal InfraRed (TIR) simultaneous information is crucial in order to carry out a reliable description of crop water stress condition. In this paper, a study based on the hyperspectral sensors TASI and CASI, which are regularly operated by the Institut Cartogràfic de Catalunya (ICC) since 2009, is proposed. High-resolution hyperspectral data sets acquired over a vineyard in Raïmat (Spain) are employed to characterize the energy flux exchange between surface and atmosphere, and to estimate the crop daily evapotranspiration (ETd). Finally, a relative Crop Water Stress Index (CWSI) is obtained under specific assumptions upon the water stress condition of reference plants within the imaged scene.
Keywords :
atmospheric boundary layer; crops; evaporation; infrared detectors; transpiration; vegetation mapping; CASI hyperspectral sensor; CWSI; Raimat; Spain; TASI hyperspectral sensor; TIR information; VNIR information; crop daily evapotranspiration; crop water stress characterization; crop water stress index; high resolution hyperspectral data sets; optic hyperspectral sensors; surface-atmosphere energy flux exchange; thermal hyperspectral sensors; thermal infrared information; visible-near infrared information; Agriculture; Estimation; Hyperspectral imaging; Pipelines; Stress; Temperature measurement; Crop Water Stress Index (CWSI); Evapotranspiration (ET); HypersTIR and VNIR data;
Conference_Titel :
Geoscience and Remote Sensing Symposium (IGARSS), 2012 IEEE International
Conference_Location :
Munich
Print_ISBN :
978-1-4673-1160-1
Electronic_ISBN :
2153-6996
DOI :
10.1109/IGARSS.2012.6352071
