Water Stress and Fluorescence Detection in Crop Water Stress and Fluorescence Detection in Crop Canopies with AHS Thermal Imagery: simulations Canopies with AHS Thermal Imagery: simulations
with FluorMODwith FluorMOD
Airborne Imaging Spectroscopy Workshop7 Oct 2005 - Bruges - Belgium
BruHyp’05
P.J. Zarco-Tejada, G. Sepulcre-Cantó, O. Pérez-Priego, J.R. Miller, J.A. Sobrino, J.C. Jiménez-Muñoz
IAS/CSIC INTA York University
y = 1.12x + 0.97R2 = 0.57-2
0
2
4
-2 0 2 4
T c-TR IRT( K)
Tc-T
R A
HS
(K) 12:30
y = 0.42x + 0.34R2 = 0.45
-2
-1
1
2
3
-2 -1 1 2 3
T c-TR IRT (K)
Tc-T
R A
HS
(K)
9:30
y = 0.86x + 0.07R2 = 0.50
-1
0
1
-1 0 1
T c-TR IRT (K)
Tc-T
R A
HS
(K)
7:30
7:30 9:30 12:30
y = -0.70x - 1.18r2 = 0.62
-3.00
-2.50
-2.00
-1.50
-1.00
-0.50
0.00
0 1 2Tc-Ta AHS (K)
Ψ(M
Pa)
Tree Crown Temperature from 3 Image Acquisitions
Water stress detection at the crown level relationship with water potential
< 2> 2
Tc-TR(K)7:30 9:30 12:30
<11-4>4
Tc-Ta (K)
Irradiance and crown radiance measured with very high spectral detail inside the O2-A (760.5 nm) and O2-B (687 nm) bands
Spectral calculation of reflectance from irradiance and vegetation radiance spectra, showing a peak or in-filling at the oxygen bands
Spectral Measurements of Fluor In-filling
Zarco-Tejada et al., in press
FluorMOD Simulation: Fluorescence Effects on Reflectance
Fluorescence Effects on Leaf Reflectance
Fluorescence Effects on Canopy Reflectance