Retrieval of snow physical parameters using a ground-based spectral radiometer

Katsuyuki Kuchiki, Teruo Aoki, Tomonori Tanikawa, Yuji Kodama

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)


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 languageEnglish
Pages (from-to)5567-5582
Number of pages16
JournalApplied Optics
Issue number29
Publication statusPublished - Oct 10 2009
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering


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