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Table 3 The parameter settings of the PROSAIL model (a combination of the Properties Optique Spectrales des Feuilles [PROSPECT] model and the Scattering by Arbitrarily Inclined Leaves [SAIL] model)

From: A robust spectral angle index for remotely assessing soybean canopy chlorophyll content in different growing stages

Type

Parameter

Values/ranges

Leaf parameters

Leaf structure index (N)

1.5

Chlorophyll content (Cab)

(a) 10:1:40 μg/cm2

(b) 20:1:45 μg/cm2

(c) 25:1:50 μg/cm2

Carotenoid content (Car)

0 μg/cm2

Brown pigments (Cbrown)

0 μg/cm2

Dry matter content (Cm)

0.01 g/cm2

Equivalent water thickness (Cw)

0.02 cm

Canopy structure and observation

Hot spot (hspot)

0.5

Solar zenith angle (tts)

20°

Observer zenith angle (tto)

0°

Azimuth (psi)

90°

Average leaf inclination angle (ALA)

60°

Leaf area index (LAI)

(a) 2:0.5:4 m2/m2

(b) 4.5:0.5:6 m2/m2

(c) 6.5:0.5:8 m2/m2

Soil moisture factor (psoil)

0

  1. The chlorophyll content dataset is labeled as “Chl-Cab” to correspond with the labeling of the field-based measurements of Chl content (Chl-D)