Spectral Albedo Measurements from 2008 CHINARE Arctic Expedition

Spectral albedo measurements were collected on sea ice during the third CHINARE expedition in the Chukchi Sea from 20 to 29 August 2008. The dataset contains incident and reflected radiation data from TriOS Ramses spectroradiometers at four distinct ice stations. It was contributed by the organization SCIOPS.

Use Cases

• Modeling spectral albedo of different sea ice surface types (level ice, melt pond, open lead) using station-specific spectral data.
• Analyzing temporal changes in albedo related to snow accumulation and ice formation using time-series data from stations II and IV.
• Assessing sensor performance and calibration by comparing data within the recommended 350 to 920 nm wavelength range against known problematic wavelengths.
• Correlating surface conditions like snow depth (zs) and ice thickness (fb) with measured spectral reflectance values.

Strengths

• Data covers four distinct ice station deployments over a 10-day period from 20-29 August 2008.
• Provides spectral resolution for both incident and reflected radiation using specialized TriOS Ramses spectroradiometers.
• Includes detailed station metadata describing surface types, snow depth (zs), ice thickness (fb), and instrument height (zi).

Limitations

• No significant quality control has been performed on the data according to the description.
• Sensors have known calibration issues at the longest and shortest reported wavelengths, limiting reliable use to approximately 350-920 nm.
• Contains periods of unusable data, such as when a station fell over on 25 August.

Provenance

Source

NASA Earthdata (platform), contributed by SCIOPS.

Collection Method

Field measurements using TriOS Ramses spectroradiometers deployed on sea ice from the icebreaker MS Xuelong.

Time Range

20 to 29 August 2008.

Freshness

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Geography

Chukchi Sea, Arctic Ocean, at four specific ice station locations.