Abstract
A ground-based spectral radiometer system for albedo and flux (GSAF) was developed to retrieve a mass concentration of snow impurities and effective snow grain size automatically. The GSAF measures spectral albedo and diffuse fraction with a single sensor to omit a radiometric calibration. The deviation from an ideal cosine response of the sensor to insolation is precisely corrected. The snow physical parameters can be retrieved with the GSAF even under cloudy conditions, because the effect of illumination conditions on albedo is considered in a retrieval algorithm. Continuous measurements with the GSAF at two snowfields in Hokkaido, Japan, showed the correlations between the retrieved parameters and in situ measurements (R = 0:595 to 0.940).
| Original language | English |
|---|---|
| Pages (from-to) | 5567-5582 |
| Number of pages | 16 |
| Journal | Applied Optics |
| Volume | 48 |
| Issue number | 29 |
| DOIs | |
| Publication status | Published - Oct 10 2009 |
| Externally published | Yes |
Fingerprint
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
Cite this
Retrieval of snow physical parameters using a ground-based spectral radiometer. / Kuchiki, Katsuyuki; Aoki, Teruo; Tanikawa, Tomonori; Kodama, Yuji.
In: Applied Optics, Vol. 48, No. 29, 10.10.2009, p. 5567-5582.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Retrieval of snow physical parameters using a ground-based spectral radiometer
AU - Kuchiki, Katsuyuki
AU - Aoki, Teruo
AU - Tanikawa, Tomonori
AU - Kodama, Yuji
PY - 2009/10/10
Y1 - 2009/10/10
N2 - A ground-based spectral radiometer system for albedo and flux (GSAF) was developed to retrieve a mass concentration of snow impurities and effective snow grain size automatically. The GSAF measures spectral albedo and diffuse fraction with a single sensor to omit a radiometric calibration. The deviation from an ideal cosine response of the sensor to insolation is precisely corrected. The snow physical parameters can be retrieved with the GSAF even under cloudy conditions, because the effect of illumination conditions on albedo is considered in a retrieval algorithm. Continuous measurements with the GSAF at two snowfields in Hokkaido, Japan, showed the correlations between the retrieved parameters and in situ measurements (R = 0:595 to 0.940).
AB - A ground-based spectral radiometer system for albedo and flux (GSAF) was developed to retrieve a mass concentration of snow impurities and effective snow grain size automatically. The GSAF measures spectral albedo and diffuse fraction with a single sensor to omit a radiometric calibration. The deviation from an ideal cosine response of the sensor to insolation is precisely corrected. The snow physical parameters can be retrieved with the GSAF even under cloudy conditions, because the effect of illumination conditions on albedo is considered in a retrieval algorithm. Continuous measurements with the GSAF at two snowfields in Hokkaido, Japan, showed the correlations between the retrieved parameters and in situ measurements (R = 0:595 to 0.940).
UR - http://www.scopus.com/inward/record.url?scp=70350321133&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=70350321133&partnerID=8YFLogxK
U2 - 10.1364/AO.48.005567
DO - 10.1364/AO.48.005567
M3 - Article
C2 - 19823241
AN - SCOPUS:70350321133
VL - 48
SP - 5567
EP - 5582
JO - Applied Optics
JF - Applied Optics
SN - 1559-128X
IS - 29
ER -