Daily Snow Water Equivalent (SWE) time-series for the Venosta Valley at 50 m spatial resolution - 2017 to 2022

General Description

The dataset contains daily Snow Water Equivalent (SWE) time-series at 50 m spatial resolution for five hydrological seasons spanning from 1st October 2017 to 30th September 2022. The dataset is based on remote sensing data (Sentinel-2, MODIS) that are merged together to achieve high spatial and temporal detail, as well as in-situ data (temperature and snow depth). The SWE is reconstructed by using a degree-day model.  The dataset can be used in many applications like hydrological modeling, water resource management or hydropower planning. 

Data Details

Time period: 1st October 2017 - 30th September 2022

Type of data: Snow Water Equivalent (SWE) [mm]

How the data was collected or derived: Derived from Sentinel-2, MODIS and in-situ temperature and snow depth data

Statistical methods used: Generalized Additive Model (GAM)

Limitations or exclusions in the data: The dataset does not include glacierized areas

Coordinate reference system: EPSG:3035

Bounding box (Xmin, Ymin, Xmax, Ymax): (4344230.449, 2592049.728, 4405893.303, 2640759.882)

Spatial resolution: 50 m

Image size: 1233 x 974

File format: Cloud Optimized Geotiff (COG) format.

Support

If you discover a bug, artifact, or inconsistency, or if you have a question please contact the authors.

Reference

Premier, V., Marin, C., Bertoldi, G., Barella, R., Notarnicola, C., & Bruzzone, L. (2023). Exploring the use of multi-source high-resolution satellite data for snow water equivalent reconstruction over mountainous catchments. The Cryosphere, 17(6), 2387-2407. https://doi.org/10.5194/tc-17-2387-2023 

Name convention

To ensure consistency and ease of use across and within the projects, we follow the standard Open-Earth-Monitor file-naming convention. The convention works with 10 fields that describes important properties of the data. In this way users can search files, prepare data analysis etc, without needing to open files. The fields are:

generic variable name: swe = snow water equivalent

variable procedure combination: reconstruction

Position in the probability distribution / variable type: c = continuous

Spatial support: 50m

Depth reference: s = surface

Time reference begin time: 20171001 = 2017-10-01

Time reference end time: 20220930 = 2022-09-30

Bounding box: it = Italy (Venosta Valley)

EPSG code: epsg.3035 = EPSG:3035

Version code: v20240212 = 2024-02-12 (creation date)