NIR bidirectional reflection spectrum (i=0°, e=30°) of Smectite SWy-2 0-25µm grains at 298K, Patm
- Title
- NIR bidirectional reflection spectrum (i=0°, e=30°) of Smectite SWy-2 0-25µm grains at 298K, Patm
- DOI
- 10.26302/SSHADE/EXPERIMENT_BS_20121213_002
- Data reference
- Pommerol, Antoine; Schmitt, Bernard (2007): Near-IR bidirectional reflection spectra (i=0°, e=30°) of Smectite SWy-2 for different grain sizes at 298K in ambient air. SSHADE/GhoSST (OSUG Data Center). Dataset/Spectral Data. https://doi.org/10.26302/SSHADE/EXPERIMENT_BS_20121213_002
- Publications
- Database
- Experimentalists
- Experiment type
- laboratory measurement
- Type
- reflectance factor
- Instrument
- SHINE Spectro-Gonio bidirectional reflection Vis-NIR
- Sample holder
- Aluminum plate with 1 mm deep circular hole (3 cm) inside P-T controled chamber closed by saphire window and cooled by Peltier elements (SERAC environmental chamber)
- Standard medium
- vacuum
- Observation mode
- spectrum
- Spectral range type(s)
- NIR
- Valid spectral range(s)
-
Min - Max (${\mu}m$) Sampling (${\mu}m$) Resolution (${\mu}m$) Position accuracy (${\mu}m$) Absorption edge #1 1.0 - 2.0 0.02 0.024 0.001 #2 2.0 - 4.18 0.02 0.048 0.001 - Filters
-
Type Center/Edge (${\mu}m$) Width (${\mu}m$) Place #1 long-pass filters of the spectro-gonio radiometer - Scan number
- 10
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
- fixed angles
- Incidence angle
- 0.0°
- Emergence angle
- 30.0°
- Azimuth angle
- 0.0°
- Phase angle
- 30.0°
- Resolution illumination
- 0.1°
- Resolution observation
- 4.1°
Illumination
Observation
- Comments
- partial polarization variable with wavelength (from monochromator grating)
- Observation mode
- single spot
- Image size
- 23.1 x 20.0 $mm$
- Comments
- elliptic observation spot
- Experiment
- Near-IR bidirectional reflection spectra (i=0°, e=30°) of Smectite SWy-2 for different grain sizes at 298K in ambient air
- Date begin
- 2007-01-01
- Release date
- 2019-12-28 10:24:21 UTC+0000
- Version (Date)
- #2 (2019-12-28 10:24:21 UTC+0000, Updated: 2019-12-30 10:20:18 UTC+0000)
- History
-
Date Mode Version Status Comments 2017-07-04 10:13:32 UTC+0000 first import #1 obsolete version 2012-12-12: new bidirectional reflectance spectrum (NIR) of smectite 0-25µm grains 2019-12-28 10:24:21 UTC+0000 new version #2 valid version adjustment of the reflectance of the first grating by -0.2%
- Analysis
- raw bidirectional reflectance spectrum calibrated: 1) with "Spectralon 99%" measured under same geometry using its absolute BRDF (1.0-2.5µm) and 2) with "Infragold" using its relative spectral reflectance (2.5-4.2µm)
- Quality flag
- 4
- Validator(s)