Spectrum

Vis-NIR bidirectional reflection spectrum of spherical water ice particles 4.5±2.5 μm at 173 K

Title
Vis-NIR bidirectional reflection spectrum of spherical water ice particles 4.5±2.5 μm at 173 K
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
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
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 $mm$
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 17:32:00
Date end
2016-10-21 18:36:00
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