Photogrammetric Snow Depth Maps from Multiple Platforms in Davos

Snow depth maps and validation measurements from a 2018 intercomparison study of photogrammetric platforms in the Dischma valley, Switzerland. ENVIDAT provides this data set, which includes products from satellite, airplane, UAS, and terrestrial platforms. The study was conducted in spring 2018.

Use Cases

• Compare root mean square error (RMSE) and normalized median deviation (NMAD) values between satellite, airplane, UAS, and terrestrial snow depth maps.
• Validate photogrammetric snow depth maps using manual probing measurements and fixed snow pole observations.
• Analyze the accuracy of satellite-derived snow depth maps over a 40 km2 area by comparing them to airplane dataset results.
• Evaluate the operational advantages of different platforms for snow depth mapping over small and large geographic areas.

Strengths

• Provides comparative accuracy metrics (RMSE, NMAD) for four distinct photogrammetric platforms.
• Includes validation data from manual probing and fixed snow pole measurements.
• Covers a large geographic test area of 40 km2 for satellite vs. airplane comparison.

Limitations

• Terrestrial snow depth map validation was limited, intersecting with only 4 manual measurements.
• Data is from a single spring season (2018), limiting temporal analysis.
• Specific sample sizes, file formats, and data dimensions are not provided.

Provenance

Source

ENVIDAT

Collection Method

Photogrammetric mapping from satellite (Pléiades), airplane (Ultracam Eagle M3), UAS (eBee+ with S.O.D.A. camera), and terrestrial (Canon EOS 750D) platforms, validated by manual probing and snow pole observations.

Time Range

Spring 2018

Freshness

Data was last updated in 2020.

Geography

Dischma valley, Davos region, Switzerland