Spectral Albedo Measurements For Antarctic Sea Ice And Snow

2012 data from the SIPEX II Antarctic voyage contains albedo measurements for thin sea ice covered with frost flowers, nilas, snow, and slush across the 300-2500 nm wavelength range. The Australian Antarctic Data Centre collected the data using an Analytical Spectral Device spectrophotometer, recording 5 upwelling and 5 downwelling spectral signatures per site. Processed spectra are used to calculate albedo by computing the ratio of upwelling to downwelling radiation.

Use Cases

• Modeling surface energy balance by analyzing albedo values derived from upwelling and downwelling radiation spectra for different ice types.
• Comparing spectral signatures of frost flowers, nilas, snow, and slush across the 300-2500 nm range to understand their radiative impact.
• Validating satellite-derived albedo products using in-situ spectral measurements from the Antarctic sea ice zone.
• Studying wavelength-dependent albedo variations from UV to shortwave infrared (300-2500 nm) for various snow and ice surface conditions.

Strengths

• High spectral resolution data across 300-2500 nm wavelength range.
• Multiple measurements per site with 5 upwelling and 5 downwelling spectral signatures.
• Includes supporting photography of frost flowers and ice types for visual context.

Limitations

• Unknown total number of measurement sites or rows of data.
• Raw data requires MATLAB or similar analysis package for access and processing.
• Data is from a single expedition in 2012, limiting temporal scope.

Provenance

Source

Australian Antarctic Data Centre (AU_AADC).

Collection Method

Field measurements using an Analytical Spectral Device (ASD) spectrophotometer with a cosine collector during the SIPEX II voyage.

Time Range

2012.

Freshness

null

Geography

Antarctic sea ice zone (specific SIPEX II voyage track).