Vis-NIR BRDF spectra (i=40°, e=0-20°, a=0-180°) of 12.5mm thick slab ice on snow

Spectrum

Title: Vis-NIR BRDF spectra (i=40°, e=0-20°, a=0-180°) of 12.5mm thick slab ice on snow

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Angular geometry

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Data

Unit: Range: Valid spectral range(s): 5050.50505050505 - 16666.6666666667 micron

X Axis

Scale: Inverted:

Y Axis

Scale:

Legend

Position: Visibility:

References

DOI

10.26302/SSHADE/EXPERIMENT_BS_20160831_000

Data reference

Brissaud, Olivier; Schmitt, Bernard; Douté, Sylvain (2009): Vis-NIR spectral bidirectional reflection distribution fonction (SBRDF) of sintered snow (Arselle) and slab ice (3 thicknesses: 1.42, 7.45 and 12.5 mm) on snow at -10°C. SSHADE/GhoSST (OSUG Data Center). Dataset/Spectral Data. https://doi.org/10.26302/SSHADE/EXPERIMENT_BS_20160831_000

Publications

Owner

Database

GhoSST

Experimentalists

Spectrum type

Experiment type: laboratory measurement
Type: reflectance factor
Comments: weak effect (<0.01) of incident polarization in 0.60-0.66µm range

Instrument #1

Instrument: SHINE Spectro-Gonio bidirectional reflection Vis-NIR
Sample holder: stainless-steel cylinder in cold chamber

Spectral parameters

Standard medium

vacuum

Observation mode

spectrum

Spectral range type(s)

Vis, NIR

Valid spectral range(s)

	Min - Max (${\mu}m$)	Sampling (${\mu}m$)	Resolution (${\mu}m$)	Position accuracy (${\mu}m$)
#1	0.6 - 0.66	0.02	0.0047	0.001
#2	0.68 - 1.38	0.02	0.0095	0.002
#3	1.4 - 1.98	0.02	0.019	0.004

Scan number

Angular parameters

Definition: incidence and emergence angles are positive with origin at nadir, and vary in same direction. Azimuth origin (increasing clockwise) is for i = e (opposition geometry).

Observation geometry: bidirectional
Observation mode: tri-angular function
Resolution illumination: 0.1°
Resolution observation: 4.1°

Polarization parameters

Illumination

Observation

Comments: partial polarization variable with wavelength (from gratings)

Spatial parameters

Observation mode: single spot
Resolutions: 20.0 ${\pm}$ 0.1 $mm$
Comments: spatial resolution over x vary as 1/cos(obs angle)

Angular geometries

Number of geometries: 13

Incidence	Emergence	Azimuth	Phase
40.0°	10.0°	0.0°	30.0°
40.0°	20.0°	0.0°	20.0°
40.0°	10.0°	45.0°	33.56°
40.0°	20.0°	45.0°	28.92°
40.0°	10.0°	90.0°	41.03°
40.0°	20.0°	90.0°	43.96°
40.0°	10.0°	140.0°	48.02°
40.0°	20.0°	140.0°	56.53°
40.0°	10.0°	160.0°	49.49°
40.0°	20.0°	160.0°	59.12°
40.0°	0.0°	180.0°	40.0°
40.0°	10.0°	180.0°	50.0°
40.0°	20.0°	180.0°	60.0°