Thin laser beam wandering and intensity fluctuations method for evapotranspiration measurement

TitreThin laser beam wandering and intensity fluctuations method for evapotranspiration measurement
Type de publicationArticle de revue
AuteurPoisson, Antonin, Fernandez, Angel, Perez, Dario G, Barille, Régis , Dupont, Jean-Charles
PaysPays-Bas
EditeurElsevier
VilleAmsterdam
TypeArticle scientifique dans une revue à comité de lecture
Année2016
LangueAnglais
DateJuin 2016
Pagination33-40
Volume80
Titre de la revueOptics & Laser Technology
ISSN1879-2545
Mots-clésAtmospheric turbulence, Beam wandering, Evapotranspiration, Laser scintillation
Résumé en anglais

We compare in this study two simple optical setups to measure the atmospheric turbulence characterized by the refractive index structure parameter [View the MathML source] Cn2. The corresponding heat flux values sensed by the laser beam propagation are calculated leading to the plant evapotranspiration. The results are discussed and compared to measurements obtained with a well-known and calibrated eddy-covariant instrument. A fine analysis gives a good insight of the accuracy of the optical devices proposed here to measure the crop evapotranspiration. Additional evapotranspiration values calculated with meteorological sensor data and the use of different models are also compared in parallel.

URL de la noticehttp://okina.univ-angers.fr/publications/ua15712
DOI10.1016/j.optlastec.2015.12.017
Lien vers le document

http://www.sciencedirect.com/science/article/pii/S0030399215303881

Titre abrégéOpt. Laser Technol.