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Instruments > In Situ/Laboratory Instruments > Photon/Optical Detectors > InfraSnow

Preferred term

InfraSnow  

Definition

  • The InfraSnow Sensor was developed in close collaboration with the Swiss Federal Institute for Snow and Avalanche Research (SLF) in Davos. This is the first hand-held device that can measure snow specific-surface-area (SSA) at fractional cost of existing bulky laboratory devices. The method consists of diffuse near-infrared reflectance measurements using a compact integrating sphere setup to derive SSA. Diffuse reflectance is measured at NIR wavelengths, where impurities have only a weak influence on the reflectance of snow. For a sufficiently thick snow block, there exists a unique correlation between diffuse hemispherical reflectance and SSA according to multiple-scattering radiative transfer theory. (en)

Broader concept

Change note

  • 2023-07-19 14:35:17.0 [tstevens] Insert Concept add broader relation (InfraSnow [89caeef2-3ad1-4932-a3be-1a075c04afcf,1380225] - Photon/Optical Detectors [8143e95e-a438-4a2a-82b2-6d7ae079fba7,1371833]);
  • 2023-07-19 14:36:00.0 [tstevens] insert AltLabel (id: null category: primary text: InfraSnow SSA Sensor language code: en);
  • 2023-07-19 14:37:32.0 [tstevens] insert Definition (id: null text: The InfraSnow Sensor was developed in close collaboration with the Swiss Federal Institute for Snow and Avalanche Research (SLF) in Davos. This is the first hand-held device that can measure snow specific-surface-area (SSA) at fractional cost of existing bulky laboratory devices. The method consists of diffuse near-infrared reflectance measurements using a compact integrating sphere setup to derive SSA. Diffuse reflectance is measured at NIR wavelengths, where impurities have only a weak influence on the reflectance of snow. For a sufficiently thick snow block, there exists a unique correlation between diffuse hemispherical reflectance and SSA according to multiple-scattering radiative transfer theory. language code: en);

URI

https://gcmd.earthdata.nasa.gov/kms/concept/89caeef2-3ad1-4932-a3be-1a075c04afcf

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