Vis-NIR bidirectional reflection spectrum of spherical water ice particles 67±31 μm at 173 K, after 12h of metamorphism
- Title
- Vis-NIR bidirectional reflection spectrum of spherical water ice particles 67±31 μm at 173 K, after 12h of metamorphism
- DOI
- 10.26302/SSHADE/EXPERIMENT_OP_20171130_001
- Data reference
- Poch, Olivier; Yoldi, Zuriñe; Jost, Bernhard (2016): Vis-NIR bidirectional reflection spectra of spherical water ice particles for different sizes (2 to 100 µm), temperatures (173 and 223 K) and temporal evolutions. SSHADE/BYPASS+CSS (OSUG Data Center). Dataset/Spectral Data. https://doi.org/10.26302/SSHADE/EXPERIMENT_OP_20171130_001
- Database
- Experimentalists
- Experiment type
- laboratory measurement
- Type
- reflectance factor
- Instrument
- SHINE Spectro-Gonio bidirectional reflection Vis-NIR
- Sample holder
- Aluminum sample holder, cylindrical 48 mm diameter and 1 to 5mm depth closed by a sapphire window and cooled by a He cryostat in a vacuum chamber (Carbo-NIR)
- 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 (${\mu}m$) Absorption edge #1 0.7 - 2.02 0.02 0.024 #2 2.02 - 3.98 0.02 0.048 - Filters
-
Type Center/Edge (${\mu}m$) Width (${\mu}m$) Place #1 long-pass filters of the spectro-gonio radiometer - Scan number
- 1
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
- Resolutions
- 20.0 $mm$
- Name
- Water ice spherical particles 67±31 μm at 173 K
- Changes
- The sample kept at 173 K under primary vacuum for 12h underwent metamorphism (recrystallisation/sintering, change of grains size and shape) of the ice particles and possibly slight sublimation (not visible on picture of the surface).
- Experiment
- Vis-NIR bidirectional reflection spectra of spherical water ice particles for different sizes (2 to 100 µm), temperatures (173 and 223 K) and temporal evolutions
- Date begin
- 2016-10-21 08:00:00
- Date end
- 2016-10-21 09:30:00
- Release date
- 2018-01-31 23:51:01 UTC+0000
- Version (Date)
- #1 (2018-01-31 23:51:01 UTC+0000, Updated: 2019-12-21 09:42:04 UTC+0000)
- History
-
Date Mode Version Status Comments 2017-12-02 22:41:42 UTC+0000 first import #1 valid version new reflectance spectrum
- Analysis
- raw bidirectional reflectance spectrum calibrated: 1) with "Spectralon 99%" measured under same geometry using its absolute BRDF (0.7-2.1µm) and 2) with "Infragold" using its relative spectral reflectance (2.1-4.0µm)
- Quality flag
- 4
