Alpine Snow Depth Raster And Orthophoto From Drone Survey

Two drone surveys on 16 April 2021 and 28 May 2021 captured snow depth and distribution data over the Schürlialp area. The dataset includes a 10cm digital surface model, a 10cm snow depth raster, a 3mm orthophoto, and original drone images, processed with Agisoft Metashape. Data is hosted by ENVIDAT and was last updated in 2022.

Use Cases

• Model snowmelt runoff by analyzing changes in the 10cm snow depth raster between the April and May surveys.
• Validate satellite-derived snow products by comparing them with the high-resolution 3mm orthophoto and DSM.
• Train terrain classification models using features extracted from the 10cm digital surface model (DSM).
• Assess photogrammetric processing pipelines by using the original drone images as raw input data.

Strengths

• Provides high-resolution 3mm orthophoto for detailed visual analysis.
• Includes core derived products: a 10cm DSM and a 10cm snow depth raster.
• Data from two distinct dates enables change detection over a six-week period.

Limitations

• Limited temporal coverage to only two days in 2021.
• Geographic scope is restricted to the single Schürlialp site.
• Unknown sample size and file formats for the original drone images.

Provenance

Source

ENVIDAT, sourced from NASA Earthdata.

Collection Method

Collected via Wingtra Gen II drone with Sony RX1 II RGB sensor and processed with Agisoft Metashape.

Time Range

16 April 2021 and 28 May 2021.

Freshness

Last updated in 2022; no stated update frequency.

Geography

Schürlialp area.