BOREAS Seasonal Understory Reflectance in Boreal Forests

BOREAS RSS-19 1994 Seasonal Understory Reflectance Data was collected by NASA to understand spectral bi-directional reflectance in boreal ecosystems. Measurements of nadir reflectance from 400 to 850 nm were taken for sunlit and shaded understory across five field campaigns in the Northern and Southern Study Areas of Canada. The dataset captures seasonal and spatial variations in reflectance due to differing understory species and phenological cycles.

Use Cases

• Modeling canopy bi-directional reflectance distribution function using average understory reflectance estimates.
• Analyzing seasonal spectral variation in boreal forest understory flora across the 400-850 nm range.
• Comparing spatial differences in green and infrared spectral regions between the NSA and SSA study sites.
• Studying phenological cycles of foliar display through temporal reflectance signatures.
• Documenting sunlit and shaded understory reflectance, including vegetation and snow cover, along LAI transect lines.

Strengths

• Data collection spanned five field campaigns throughout a year, capturing seasonal variation.
• Measurements cover a specific spectral range (400 to 850 nm) for both sunlit and shaded conditions.
• Spatial coverage includes two distinct study areas (NSA and SSA) in the Canadian boreal forest.
• Observations were made along surveyed LAI transect lines, providing structured spatial sampling.

Limitations

• Key quantitative details like row count, file size, and specific column names are unavailable from all sources.
• There is a conflict in the 'last updated' metadata between platforms (1994 vs. 2026), indicating potential data staleness or metadata errors.
• The license is ambiguously listed as 'other-license-specified' without explicit terms.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Field measurements of nadir reflectance along surveyed LAI transect lines near solar noon.

Time Range

1994, covering observations throughout a full year.

Freshness

2026-03-13 07:17:59.643913

Geography

BOREAS Northern Study Area (Thompson, Manitoba) and Southern Study Area (Candle Lake, Saskatchewan), Canada.