Vis-NIR reflectance spectrum of sublimating Water ice particles 67±31 μm containing 1 wt.% Smectite in intra-mixture after 19.63h
- Title
- Vis-NIR reflectance spectrum of sublimating Water ice particles 67±31 μm containing 1 wt.% Smectite in intra-mixture after 19.63h
- DOI
- 10.26302/SSHADE/EXPERIMENT_OP_20180119_001
- Data reference
- Poch, Olivier (2014): Vis-NIR reflectance spectra of the sublimation of Water ice particles containing 1 wt.% Smectite in intra-mixture. SSHADE/BYPASS (OSUG Data Center). Dataset/Spectral Data. https://doi.org/10.26302/SSHADE/EXPERIMENT_OP_20180119_001
- Publications
- Database
- Experimentalists
- Experiment type
- laboratory measurement
- Type
- reflectance factor
- Comments
- In the reduced data set, absolute uncertainty on the calibrated reflectance factor is ±0.1, and the spatial variability of the reflectance across the field of view is of the order of 10%. Thus, the SCITEAS imaging system does not provide a very accurate measurement of the absolute reflectance, but it provides a spectrum resolved in wavelength from 0.4 to 2.4 μm.
- Instrument
- SCITEAS Imaging System - hyperspectral imaging system Vis-NIR
- Sample holder
- Aluminum sample holder, rectangular 120x60 mm with a thickness of 20mm, equipped with PT100 temperature sensors
- Standard medium
- air
- 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 0.38 - 0.96 0.02 0.015 #2 0.96 - 2.3 0.01 0.03 - 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
- biconical
- Observation mode
- fixed angles
- Emergence angle
- 13.0°
- Azimuth angle
- 0.0°
- Comments
- The light beam emitted from the extremity of the fibre bundle positionned about 300 mm above the sample surface has a divergence half-angle of 12.7°. The light source incidence and azimuth angles are slightly variable from pixel to pixel.
- Observation mode
- roi averaged
- Comments
- Note to the provider: Complete the "image" observation_mode when fully implemented in SSHADE. Because SCITEAS data are hyperspectral images.
- Name
- Sublimation mantle of Smectite on Water ice and Smectite intra-mixture particles 67±31 μm
- Changes
- After 19.63h of sublimation, a desiccated layer made of pure smectite, about 5.30±0.39 mm thick, covers the ice particles.
- Primary material(s)
- Experiment
- Vis-NIR reflectance spectra of the sublimation of Water ice particles containing 1 wt.% Smectite in intra-mixture
- Date begin
- 2014-07-31
- Release date
- 2018-02-15 15:25:05 UTC+0000
- Version (Date)
- #1 (2018-02-15 15:25:05 UTC+0000, Updated: 2021-06-23 04:33:42 UTC+0000)
- History
-
Date Mode Version Status Comments 2018-02-09 00:02:05 UTC+0000 first import #1 valid version new reflectance spectrum
- Analysis
- White Spectralon (99%) plates (Labsphere) were used as external and internal calibration standards.
- Quality flag
- 4
- Export suffix
- _roi_smectite_intra1
- Original file
- 20140730_swy-2_ice_hielscher_phase1_cube_roi_vis.sav
- Format
- sav
