Spectral Albedo Measurements For Antarctic Sea Ice And Snow
Updated 13y ago
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Description
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).
Raw spectrum files require MATLAB or a similar analysis package to open and process; data is not in a standard tabular format.