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

fYear

2012

fDate

22-27 July 2012

Firstpage

6661

Lastpage

6664

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 (ET_d). 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;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium (IGARSS), 2012 IEEE International

Conference_Location

Munich

ISSN

2153-6996

Print_ISBN

978-1-4673-1160-1

Electronic_ISBN

2153-6996

Type

conf

DOI

10.1109/IGARSS.2012.6352071

Filename

6352071